CN112350712B - Blind-plug circuit, multi-interface electronic equipment and power supply system - Google Patents
Blind-plug circuit, multi-interface electronic equipment and power supply system Download PDFInfo
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- CN112350712B CN112350712B CN202011087427.1A CN202011087427A CN112350712B CN 112350712 B CN112350712 B CN 112350712B CN 202011087427 A CN202011087427 A CN 202011087427A CN 112350712 B CN112350712 B CN 112350712B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/0185—Coupling arrangements; Interface arrangements using field effect transistors only
- H03K19/018507—Interface arrangements
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017509—Interface arrangements
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Abstract
The invention discloses a blind-mate circuit, a multi-interface electronic device and a power supply system, wherein the blind-mate circuit comprises a first interface, a second interface, a first switch module and a second switch module, wherein a first input end of the first switch module is connected with the first interface, a second input end of the first switch module is connected with the second interface, a first controlled end of the second switch module is connected with a first output end of the first switch module, a second controlled end of the second switch module is connected with a second output end of the first switch module, a first input end of the second switch module is connected with the first interface, a first output end of the second switch module is connected with an input end of a device power supply module, a second input end of the second switch module is connected with the second interface, and a second output end of the second switch module is connected with an input end of the device power supply module. The technical scheme of the invention realizes blind insertion and effectively improves the use experience of users.
Description
Technical Field
The invention relates to the technical field of blind insertion, in particular to a blind insertion circuit and multi-interface electronic equipment.
Background
With the updating of electronic products, many electronic products are provided with two or more interfaces, so that in order to pursue the portability of the electronic products to improve the user experience, several types of portable electronic products with different interfaces, for example, portable electronic products with a full-function interface and a common power supply port, are appeared on the market, and because of the existence of the two interfaces with different standards, the user needs to distinguish the interface types to correctly access the corresponding interfaces, if the connected equipment or electronic products cannot work normally when accessing the wrong interfaces, and have potential safety hazards, so that extremely poor experience is brought to the user.
Disclosure of Invention
The invention mainly aims to provide a blind-mate circuit and a multi-interface electronic device. The technical problem of misconnection of an electronic product interface is solved.
In order to achieve the above object, the present invention provides a blind-mate circuit, including:
the first interface is a full-function bidirectional interface and is used for accessing a first voltage;
the second interface is a full-function bidirectional interface and is used for accessing a second voltage;
the first switch module is provided with a first input end, a second input end, a first output end and a second output end, wherein the first input end of the first switch module is connected with the first interface, and the second input end of the first switch module is connected with the second interface; and is configured to output a first control signal when the voltage value of the first voltage is greater than the voltage value of the second voltage; outputting a second control signal when the voltage value of the first voltage is smaller than the voltage value of the second voltage;
The second switch module is provided with a first controlled end, a second controlled end, a first input end, a second input end, a first output end and a second output end, wherein the first controlled end of the second switch module is connected with the first output end of the first switch module, the second controlled end of the second switch module is connected with the second output end of the first switch module, the first input end of the second switch module is connected with the first interface, the first output end of the second switch module is connected with the input end of the equipment power module, the second input end of the second switch module is connected with the second interface, and the second output end of the second switch module is connected with the input end of the equipment power module; and is used for switching on a passage between the first interface and the equipment power module when receiving a first control signal; and when receiving a second control signal, conducting a passage between the second interface and the equipment power module.
Optionally, the first interface is any one of ase:Sub>A USB-ase:Sub>A full-function bidirectional interface, ase:Sub>A USB-B full-function bidirectional interface, and ase:Sub>A USB-C full-function bidirectional interface.
Optionally, the first interface is any one of ase:Sub>A USB-ase:Sub>A full-function bidirectional interface, ase:Sub>A USB-B full-function bidirectional interface, and ase:Sub>A USB-C full-function bidirectional interface.
Optionally, the blind-insert circuit further includes: the first input end of the power comparison module is connected with the first interface, the first output end of the power comparison module is connected with the first controlled end of the second switch module, the second input end of the power comparison module is connected with the second interface, and the second output end of the power comparison module is connected with the second controlled end of the second switch module;
The power supply comparison module is used for comparing the voltage value of the first voltage with the voltage value of the second voltage and outputting a first turn-off signal when the voltage value of the first voltage is smaller than the voltage value of the second voltage; outputting a first turn-off signal when the voltage value of the first voltage is greater than the voltage value of the second voltage;
The second switch module is used for switching off a passage between the first interface and the equipment power supply module when receiving a first switching-off signal; and when a second turn-off signal is received, turning off a passage between the second interface and the equipment power module.
Optionally, the blind-insert circuit further includes: the power supply output module is provided with a first input end, a second input end, a first output end, a second output end, a first controlled end and a second controlled end, wherein the first input end of the power supply output module is connected with the output end of the equipment power supply module, the first output end of the power supply output module is connected with the first interface, the second input end of the power supply output module is connected with the output end of the equipment power supply module, and the second output end of the power supply output module is connected with the second interface;
The power output module is used for outputting a power supply.
Optionally, the blind-insert circuit further includes: the control module is provided with a first input control end, a second input control end, a first output control end, a second output control end, a first detection end and a second detection end, wherein the first input control end of the control module is connected with the first controlled end of the second switch module, the second input control end of the control module is connected with the second controlled end of the second switch module, the first output control end of the control module is connected with the first controlled end of the power output module, and the second output control end of the control module is connected with the second controlled end of the power output module; the first detection end of the control module is connected with the first interface, and the second detection end of the control module is connected with the second interface;
the first interface is used for acquiring a first detection signal through a detection pin of the first interface;
the second interface is used for acquiring a second detection signal through a detection pin of the second interface;
the control module is used for outputting a corresponding input conduction signal or an output conduction signal according to the first detection signal or the second detection signal;
the second switch module is used for conducting a corresponding passage according to the input conducting signal;
the power supply output module is used for conducting the corresponding channels according to the output conducting signals.
In order to achieve the above object, the present invention further provides a multi-interface electronic device, where the multi-interface electronic device includes a blind-plug circuit and a device power module according to any one of the above embodiments, an output end of a second switch module of the blind-plug circuit is an output end of the blind-plug circuit, an input end of a power output module of the blind-plug circuit is an input end of the blind-plug circuit, an output end of the blind-plug circuit is connected with an input end of the device power module, and an input end of the blind-plug circuit is connected with an output end of the device power module.
Optionally, the device power module includes: the input end of the conversion module is connected with the output end of the second switch module, and the output end of the conversion module is connected with the input end of the power supply output module; the conversion module is used for converting the first voltage accessed by the first interface into voltage and outputting the voltage to the power output module of the blind circuit, or converting the second voltage accessed by the second interface into voltage and outputting the voltage to the power output module of the blind circuit. Optionally, the device power module further comprises: the input end of the storage battery is connected with the output end of the second switch module, and the output end of the storage battery is connected with the output end of the power output module.
To achieve the above object, the present invention further proposes a power supply system including the blind-mate circuit of any one of the above and the multi-interface electronic device of any one of the above.
The invention accesses the external equipment through the two full-function bidirectional interfaces of the first interface and the second interface, the first interface and the second interface detect the equipment through the internal detection pins and output corresponding detection signals to the control module, the control module outputs corresponding control signals to the second switch module and the power output module after receiving the detection signals so as to control the corresponding passage of the second switch module to be conducted or closed and control the corresponding passage of the power output module to be conducted or closed, and the first interface, the second switch module, the control module, the power output module and the equipment power module are synthesized to access the interfaces at will without distinguishing the types of the interfaces, so that the technical problem of misconnection of the interfaces of electronic products is solved, namely blind insertion is realized, and besides, the power is supplied to the accessed equipment through the equipment power module or the external power equipment simultaneously supplies power to the equipment power module and the equipment accessed by the other interface through one of the interfaces, thereby prolonging the endurance time.
Drawings
In order to more clearly illustrate the present invention and to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings required for the embodiments or the prior art description, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in the drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of functional modules of an embodiment of a blind-mate circuit, a multi-interface electronic device, and a power supply system according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a blind-mate circuit, a multi-interface electronic device and a power supply system according to the present invention;
FIG. 3 is a circuit diagram of another embodiment of the blind-mate circuit, multi-interface electronic device and power supply system of the present invention;
FIG. 4 is a circuit diagram of another embodiment of a blind-mate circuit, a multi-interface electronic device and a power supply system according to the present invention;
FIG. 5 is a circuit diagram of another embodiment of the blind-mate circuit, multi-interface electronic device and power supply system of the present invention;
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present invention), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first", "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and the protection scope of the present invention is not limited.
The invention provides a blind-plug circuit for solving the problem of misconnection of interfaces of electronic products, and the blind-plug circuit is used for the blind-plug circuit and multi-interface electronic equipment.
Referring to fig. 1, in an embodiment of the present invention, the blind circuit includes a first interface 10, a second interface 20, a first switch module 40 and a second switch module 50, where the first switch module 40 has a first input terminal, a second input terminal, a first output terminal and a second output terminal, the second switch module 50 has a first controlled terminal, a second controlled terminal, a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal of the first switch module 40 is connected to the first interface 10, the second input terminal of the first switch module 40 is connected to the second interface 20, the first controlled terminal of the second switch module 50 is connected to the first output terminal of the first switch module 40, the first input terminal of the second switch module 50 is connected to the first interface 10, the first output terminal of the second switch module 50 is connected to the input terminal of the device power module 30, the second input terminal of the second switch module 50 is connected to the second interface 20, and the second input terminal of the second switch module 50 is connected to the second interface 30.
The first interface 10, the first interface 10 is a full-function bidirectional interface, and is used for accessing the first voltage V1. The second interface 20 is a full-function bi-directional interface for accessing the second voltage V2. The first switching module 40 outputs the first control signal when the voltage value of the first voltage V1 is greater than the voltage value of the second voltage V2, and outputs the second control signal when the voltage value of the first voltage V1 is less than the voltage value of the second voltage V2. The second switch module 50 turns on a path between the first interface 10 and the device power module 30 when receiving the first control signal; upon receiving the second control signal, a path between the second interface 20 and the device power module 30 is turned on.
Through the first interface 10, the second interface 20, the first switch module 40 and the second switch module 50, the interface can be arbitrarily accessed without distinguishing the interface type, thereby solving the technical problem of misconnection of the interfaces of the electronic products.
According to the invention, the external equipment is accessed through the two full-function bidirectional interfaces of the first interface 10 and the second interface 20, the first interface 10 and the second interface 20 detect equipment through the internal detection pins and output corresponding detection signals to the control module 80, after receiving the detection signals, the control module 80 outputs corresponding control signals to the second switch module 50 and the power output module 70 to control the corresponding passage of the second switch module 50 to be conducted or closed and control the corresponding passage of the power output module 70 to be conducted or closed, and the first interface 10, the second interface 20, the second switch module 50, the power output module 70, the control module 80 and the equipment power module 30 are integrated, so that the interface type can be accessed arbitrarily without distinguishing, the technical problem of misconnection of the electronic product interfaces is solved, namely, blind insertion is realized.
In an embodiment, referring to fig. 2, the first switch module 40 and the second switch module 50 may be composed of switch tubes, and the first switch module 40 includes a first switch tube Q1, a second switch tube Q2, a third switch tube Q3, a fourth switch tube Q4, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4; the second switch module 50 includes a fifth switch tube Q5, a sixth switch tube Q6, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, and a tenth resistor R10, wherein a first end of the first switch tube Q1, a first end of the second switch tube Q2, and a second end of the first resistor R1 are respectively connected with a second end of the second resistor R2, a second end of the first switch tube Q1, a second end of the second switch tube Q2, and a first end of the first resistor R1 are respectively connected with a first end of the second resistor R2, a third end of the first switch tube Q1 is connected with the first interface 10, and a third end of the second switch tube Q2 is connected with the device power module 30. The first end of the third switch tube Q3, the first end of the fourth switch tube Q4 and the second end of the third resistor R3 are respectively connected with the second end of the fourth resistor R4, the second end of the third switch tube Q3, the second end of the fourth switch tube Q4 and the first end of the third resistor R3 are respectively connected with the first end of the fourth resistor R4, the third end of the third switch tube Q3 is connected with the equipment power module 30, the third end of the fourth switch tube Q4 is connected with the second interface 20, the first end of the fifth switch tube Q5, the fourth end of the fifth switch tube Q5, the first end of the sixth switch tube Q6, the fourth end of the sixth switch tube Q6, the first end of the seventh resistor R7 and the second end of the eighth resistor R8 are respectively connected with the second end of the tenth resistor R10, the third end of the fifth switching tube Q5 is connected with the first end of the first switching tube Q1, the first end of the second switching tube Q2 and the second end of the first resistor R1 respectively, the fifth end of the fifth switching tube Q5, the first end of the sixth switching tube Q6 and the second end of the fifth resistor R5 are connected with the first end of the sixth resistor R6 respectively, the sixth end of the fifth switching tube Q5, the first end of the third switching tube Q3, the first end of the fourth switching tube Q4 and the second end of the third resistor R3 are connected with the second end of the fourth resistor R4 respectively, the second end of the sixth switching tube Q6 and the first end of the eighth resistor R8 are connected with the first end of the ninth resistor R9 respectively, the fifth section of the sixth switching tube Q6 and the second end of the sixth resistor R6 are connected with the second end of the seventh resistor R7 respectively, the first end of the fifth resistor R5 is connected with the first interface 10, and the second end of the tenth resistor R10 is connected with the second interface 20.
In this embodiment, Q1, Q2, Q3, Q4 are P-MOS transistors, and the turn-on voltages are the same, Q5, Q6 are N-MOS transistors, and the turn-on voltages are the same, the first interface 10 is connected to the first voltage V1, and the second interface 20 is not connected.
The first interface 10 is connected to the first voltage V1, the second interface 20 is empty, the first voltage V1 pulls the fifth terminal G2 of Q5 to a high voltage through R5, according to the NMOS transistor turn-on characteristic, i.e., V (GS) is greater than V (th), because the fourth terminal S2 of Q6 is grounded, the voltage difference between the fifth terminal and the fourth terminal of Q5 is greater than the turn-on voltage, the third terminal D2 of Q5 is grounded to the fourth terminal S2, so the first terminals of Q1 and Q2 connected thereto are pulled down to ground, according to the PMOS transistor turn-on characteristic, i.e., V (GS) is less than V (th), so the voltage differences between the first terminals G and the second terminals S of Q1 and Q2 are all lower than the turn-on voltage, Q1 and Q2 are turned on, and the path between the first interface 10 and the device power module 30 is turned on. At this time, the first voltage V1 may enter the device power module through Q1 and Q2 to supply power to the internal system and the battery.
In the second case, since the blind circuit in the present embodiment is a symmetrical circuit, the working process refers to the first case, that is, when the first interface 10 is empty, the second interface 20 is connected to the second voltage V2, the second voltage V2 pulls up the second end G1 of the Q5 through the R10, the first end of the Q5 is conducted to the sixth end and grounded, so the first ends of the controlled ends of the Q3 and Q4 are pulled down to the ground, the Q3 and Q4 are conducted, and the V2 can enter the device power module through the Q3 and Q4 to supply power to the internal system and the battery.
Optionally, the switching transistors Q1, Q2, Q3, Q4, Q5, and Q6 may be other electronic switches or MOS transistors, IGBTs, triodes, etc., and in practical application, an appropriate switching transistor may be selected according to practical requirements, which is not limited herein.
Referring to fig. 1, in an embodiment, the first interface 10 is any one of ase:Sub>A USB-ase:Sub>A full-function bi-directional interface, ase:Sub>A USB-B full-function bi-directional interface, and ase:Sub>A USB-C full-function bi-directional interface;
The second interface 20 is any one of ase:Sub>A USB-A full-function bidirectional interface, ase:Sub>A USB-B full-function bidirectional interface and ase:Sub>A USB-C full-function bidirectional interface;
Specifically, the first interface 10 of the blind circuit is a full-function interface, and the second interface 20 of the blind circuit is a full-function interface, that is, the first interface 10 and the second interface 20 can be implemented as a power supply interface or a charging interface, and the blind circuit has data transmission capability, so that convenience is improved.
In this embodiment, the first interface and the second interface are exemplified by a TYPE-C full-function bidirectional interface.
Alternatively, the first interface 10 or the second interface 20 may be any one of ase:Sub>A USB-ase:Sub>A interface, ase:Sub>A USB-B interface, ase:Sub>A USB-C interface, or other full-function bi-directional interface types, which are not particularly limited herein.
Referring to fig. 3, in an embodiment, the blind circuit further includes a power comparison module 60, where the power comparison module 60 has a first input end, a second input end, a first output end, and a second output end, the first input end of the power comparison module 60 is connected to the first interface 10, the first output end of the power comparison module 60 is connected to the first controlled end of the second switch module 50, the second input end of the power comparison module 60 is connected to the second interface 20, and the second output end of the power comparison module 60 is connected to the second controlled end of the second switch module 50.
The power comparison module 60 outputs a first shutdown signal when the voltage value of the first voltage V1 is smaller than the voltage value of the second voltage V2, and outputs a second shutdown signal when the voltage value of the first voltage V1 is larger than the voltage value of the second voltage V2. The second switch module 50 turns off the path between the first interface 10 and the input terminal of the device power module 30 when receiving the first turn-off signal, and turns off the path between the second interface 20 and the input terminal of the device power module 30 when receiving the second turn-off signal. Through the power comparison module, the high voltage can be prevented from flowing backward to the low voltage power supply end, the accessed equipment is effectively protected, and the safety is improved.
In an embodiment, referring to fig. 3, the power supply comparing module 60 may be composed of a switch tube, where the power supply comparing module 60 includes a seventh switch tube Q7, an eighth switch tube Q8, a ninth switch tube Q9, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, and a fourteenth resistor R14, the first end of the seventh switch tube Q7, the second end of the thirteenth resistor R13, and the second end of the twelfth resistor R12 are all grounded, the second end of the seventh switch tube Q7, the third end of the ninth switch tube Q9 are respectively connected to the first end of the twelfth resistor R12, the third end of the seventh switch tube Q7 is connected to the third end of the sixth switch tube Q6, the first end of the eighth switch tube Q8 is respectively connected to the second end of the thirteenth resistor R13, the sixth end of the seventh switch tube Q7 is connected to the second end of the thirteenth resistor R6, the sixth end of the eighth switch tube Q7 is connected to the sixth end of the thirteenth resistor R9, the eighth end of the eighth switch tube Q9 is connected to the eighth end of the eleventh resistor R14, the eighth end of the eighth switch tube Q7 is connected to the eighth end of the eleventh resistor R9, and the eighth end of the eighth switch tube Q9 is connected to the eighth end of the thirteenth resistor R14 is connected to the fourth end of the thirteenth resistor R13.
In this embodiment, the Q7 switch tube is an N-MOS tube identical to Q5 and Q6, i.e. the parameters, especially the turn-on voltage, are identical, and Q8 and Q9 are PNP transistors, i.e. the parameters are identical to the turn-on voltage.
The first interface 10 is connected to the first voltage V1, the second interface 20 is connected to the second voltage V2, if the voltage value of V1 is smaller than the voltage value of V2, the first end of Q9 is connected to V2, the second end of Q9 is connected to V1 through R11, and the first end of Q9 is connected to the third end according to the conduction condition of the PNP transistor, i.e., U (E) is greater than U (B), because V1 is smaller than V2. Because the second end of the Q7 is connected with the third end of the Q9, the pole G1 of the second end of the Q7 is pulled high, the pole S1 of the first end of the Q7 is grounded, the conduction condition is met, and the pole S1 of the first end of the Q7 is conducted with the pole D1 of the sixth end to be grounded; the fifth end G2 of Q5 is pulled down to ground, the third end and the fourth end of Q5 are turned off, resulting in that the first ends of the controlled ends of Q1 and Q2 connected are not pulled to ground, the conduction conditions of Q1 and Q2 are not satisfied, Q1 and Q2 are turned off, the path between the first interface 10 and the device power module 30 is turned off, while V2 pulls up the second end G1 of Q5 through R10, the first end and the sixth end of Q5 are conducted to ground, so the first ends of the controlled ends of Q3 and Q4 are pulled down to ground, Q3 and Q4 are conducted, and V2 enters the device power module through Q3 and Q4 to supply power to the internal system and the storage battery.
In the second case, since the blind-mate circuit in the embodiment is a symmetrical circuit, the working process refers to the first case, that is, when the voltage value of V1 is greater than the voltage value of V2, Q3 and Q4 are turned off, Q1 and Q2 are turned on, and V1 enters the device power module through Q1 and Q2 to supply power to the internal system and the storage battery. Therefore, the high-voltage power supply can be used for improving the charging efficiency, the high-voltage external power supply can be prevented from flowing backwards to the low-voltage external power supply, the situation of damaging the external power supply occurs, and the safety is improved.
Optionally, the Q7, Q8, and Q9 switching transistors may be other electronic switches or MOS transistors, IGBT transistors, etc., and in practical application, an appropriate switching transistor may be selected according to practical requirements, which is not limited herein.
Referring to fig. 4, in an embodiment, the blind circuit further includes a power output module 70, where the power output module 70 has a first input end, a second input end, a first output end, a second output end, a first controlled end, and a second controlled end, the first input end of the power output module 70 is connected to the output end of the device power module 30, the first output end of the power output module 70 is connected to the first interface 10, the second input end of the power output module 70 is connected to the output end of the device power module 30, and the second output end of the power output module 70 is connected to the second interface 20.
Wherein, the power output module 70 is used for outputting power.
In an embodiment, referring to fig. 4, the power output module 70 includes a tenth switching tube Q10, an eleventh switching tube Q11, a twelfth switching tube Q12, a thirteenth switching tube Q13, a fourteenth switching tube Q14, a fifteenth switching tube Q15, a sixteenth switching tube Q16, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a first end of the tenth switching tube Q10, a first end of the eleventh switching tube Q11, a first end of the twelfth switching tube Q12, a second end of the fifteenth resistor R15, a second end of the sixteenth resistor R16 are respectively connected to the first end of the seventeenth resistor R17, a second end of the tenth switching tube Q10, a second end of the eleventh switching tube Q11, a first end of the fifteenth resistor R15 are respectively connected to the first end of the sixteenth resistor R16, the third end of the tenth switching tube Q10 is connected with the output end of the equipment power module 30, the third end of the eleventh switching tube Q11 is connected with the first interface 10, the second end of the twelfth switching tube 12 is connected with the first end of the eighteenth resistor R18, the third end of the twelfth switching tube Q12 is connected with the second end of the first switching tube Q1, the first end of the thirteenth switching tube Q13, the first end of the fourteenth switching tube Q14, the first end of the fifteenth switching tube Q15, the second end of the twentieth resistor R20 and the second end of the twenty first resistor R21 are respectively connected with the first end of the twenty second resistor R22, the second end of the thirteenth switching tube Q13, the second end of the fourteenth switching tube Q14 and the first end of the twenty first resistor R20 are respectively connected with the first end of the eleventh resistor R11, the third end of the thirteenth switching tube Q13 is connected with the second interface 20, the third end of the fourteenth switching tube Q14 is connected with the output end of the equipment power module 30, the second end of the fifteenth switching tube Q15 is connected with the second end of the twenty-third resistor R23, the third end of the fifteenth switching tube Q15 is connected with the second end of the third switching tube Q3, the second end of the eighteenth resistor R18 is connected with the first end of the first switching tube Q1, the first end of the nineteenth resistor R19 is grounded, the second end of the nineteenth resistor R19 is connected with the first interface 10, the first end of the twenty-third resistor R23 is connected with the first end of the third switching tube Q3, the first end of the twenty-fourth resistor R24 is connected with the second interface 20, and the second end of the twenty-fourth resistor R24 is grounded.
Referring to fig. 4, in an embodiment, the blind insertion circuit further includes a control module 80, where the control module 80 has a first input control end, a second input control end, a first output control end, a second output control end, a first detection end, and a second detection end, the first input control end of the control module 80 is connected to the first controlled end of the second switch module 50, the second input control end of the control module 80 is connected to the second controlled end of the second switch module 50, the first output control end of the control module 80 is connected to the first controlled end of the power output module 70, the second output control end of the control module 80 is connected to the second controlled end of the power output module 70, the first detection end of the control module 80 is connected to the first interface 10, and the second detection end of the control module 80 is connected to the second interface 20.
The first interface 10 obtains a first detection signal through a detection pin of the first interface 10, and the second interface 20 obtains a second detection signal through a detection pin of the second interface 20. The control module 80 is configured to receive the first detection signal and the second detection signal, when the voltage of the first detection signal is equal to the voltage of the second detection signal, i.e., the voltage of the first device is equal to the second voltage or the voltage of the second device is equal to the first voltage, the control module 80 outputs the first input conduction signal or the second input conduction signal, and when the voltage of the first detection signal is smaller than the voltage of the second detection signal, i.e., the voltage of the first device is smaller than the second voltage, the control module 80 outputs the first output conduction signal, and when the voltage of the second detection signal is larger than the voltage of the first detection signal, i.e., the voltage of the second device is smaller than the first voltage, the control module 80 outputs the second output conduction signal. The second switch module 50 turns on the path between the first interface 10 and the device power module 30 when receiving the first input on signal, and turns on the path between the second interface 20 and the device power module 30 when receiving the second input on signal. The power output module 70 turns on the path between the device power module 30 and the first interface 10 when receiving the first output on signal, and turns on the path between the device power module 30 and the second interface 20 when receiving the second output on signal. The power output module 70 and the control module 80 can realize the charging action between different devices with the same voltage standard, and the cruising ability is prolonged.
In an embodiment, referring to fig. 4, the control module 80 includes a main control chip U1, a first conductive element D1, and a second conductive element D2. The first input control end of the control module 80 is a first input control pin PASS1 of the main control chip U1, the second input control end of the control module 80 is a second input control pin PASS2 of the main control chip U1, the first output control end of the control module 80 is a first output control pin EN1 of the main control chip U1, the second output control end of the control module 80 is a second output control pin EN2 of the main control chip U1, the first detection end of the control module 80 is a first detection pin CHT1 of the main control chip U1, the second detection end of the control module 80 is a second detection pin CHT2 of the main control chip U1, the first input control pin PASS1 of the main control chip U1 is connected with a first end of the first switching tube Q1, the second input control pin PASS2 of the main control chip U1 is connected with a first end of the third switching tube Q3, the first output control pin EN1 of the main control chip U1 is connected with a fifth end of the fourth switching tube Q16, the second output control pin 2 of the main control chip U1 is connected with a fourth end of the sixteen switching tube Q16, and the fourth end of the sixteen switching tube Q16 is connected with a fourth end of the sixteen switching tube Q6. The anode of the first unidirectional conducting element D1 is connected with the fifth end of the fifth switching tube Q5, the cathode of the first unidirectional conducting element D1 and the sixth end of the sixteenth switching tube Q16 are respectively connected with the second end of the seventeenth resistor R17, the anode of the second unidirectional conducting element D2 is connected with the second end of the fifth switching tube Q5, and the cathode of the second unidirectional conducting element D2 and the third end of the sixteenth switching tube Q16 are respectively connected with the second end of the twenty second resistor R22.
In the embodiment, the switching tubes of Q10, Q11, Q13 and Q14 are P-MOS tubes and are identical to the switching tubes of Q1, Q2, Q3 and Q4, namely the parameters are consistent with the starting voltage; the Q12 and Q15 switching tubes are PNP triodes as the Q8 and Q9 switching tubes, namely, the parameters are consistent with the starting voltage; the Q16 switch tube is a P-MOS tube and is the same as Q5, Q6 and Q7, namely parameters are consistent with the starting voltage, and the first unidirectional conduction element D1 and the second unidirectional conduction element D2 are breakdown diodes; the first interface 10 is connected to a DRP device (Dual Role Port), which can provide power and data, and can also draw power and provide data from the power device, typically a notebook computer, and the second interface 20 is connected to the second voltage V2. The DRP device accessed by the first interface communicates through a CC-Logic chip (Configuration Channel-Logic; a channel-Logic detection and control chip is configured to communicate between the interface and the device), and the detection identification pin outputs a first detection signal to a first detection pin CHT1 of the main control chip, so as to determine that power is not required to be supplied through a conversion module 31 of the device power module 30, that is, the DRP device voltage is the same as V2. After receiving the first detection signal, the main control chip U1 pulls down the first ends of the controlled ends of the Q1, the Q2, the Q3 and the Q4 to the ground through the PASS1 and the PASS2, namely the Q1, the Q2, the Q3 and the Q4 are conducted. Meanwhile, the first end of the Q12 is pulled up by V2 because the conduction of the Q2, the second end of the Q12 is connected with the first ends of the Q1 and the Q2 and pulled down to the ground by the PASS1 and the R18, at the moment, the Q12 meets the conduction condition, the first end and the third end of the Q12 are conducted, the first ends of the controlled ends of the Q10 and the Q11 are pulled up by V2, the Q10 and the Q11 are not turned off because the conduction condition is not met, the first end of the same Q15 is pulled up by V2, the second end of the Q15 is pulled down to the ground by the PASS2, the Q15 is conducted, the first ends of the controlled ends of the Q13 and the Q14 are pulled up to V2, and the Q13 and the Q14 are turned off. At this point, Q1, Q2, Q3, Q4 are on, and Q10, Q11, Q13, Q14 are off. The second voltage V2 may supply power to the DRP device while the battery and the internal system are being supplied.
In the second case, since the blind-mate circuit in the present embodiment is a symmetrical circuit, the operation refers to the first case, that is, when the first interface 10 is connected to the first voltage V1, the second interface 20 is connected to the DRP device, and the DRP device voltage is the same as V1. When the DRP equipment is still successfully accessed, the main control chip conducts Q1, Q2, Q3 and Q4 through the PASS1 and the PASS2, and turns off Q10, Q11, Q13 and Q14, so that the first voltage V1 can supply power to the storage battery and the internal system and simultaneously supply power to the DRP equipment.
Optionally, the switching transistors Q10, Q11, Q12, Q13, Q14, Q15, and Q16 may be other electronic switches or MOS transistors, IGBT transistors, etc., and in practical application, an appropriate switching transistor may be selected according to practical requirements, which is not limited herein.
Optionally, the main control chip may be an MCU, in practical application, an appropriate chip may be selected according to practical requirements, where the first unidirectional conduction element D1 and the second unidirectional conduction element D2 may be schottky diodes or other diodes, and an appropriate unidirectional conduction element may be selected according to practical requirements, and the application is not limited herein.
The working principle of the present invention is described below with reference to fig. 5:
the blind circuit in the invention has five working modes.
In the first case of the first mode of operation, the first interface 10 is connected to the first voltage V1 and the second interface 20 is not connected at all. The first interface 10 is connected to the first voltage V1, the second interface 20 is empty, the first voltage V1 pulls the fifth terminal G2 of Q5 to a high voltage through R5, according to the NMOS transistor turn-on characteristic, i.e., V (GS) is greater than V (th), because the fourth terminal S2 of Q6 is grounded, the voltage difference between the fifth terminal and the fourth terminal of Q5 is greater than the turn-on voltage, the third terminal D2 of Q5 is grounded to the fourth terminal S2, so the first terminals of Q1 and Q2 connected thereto are pulled down to ground, according to the PMOS transistor turn-on characteristic, i.e., V (GS) is less than V (th), so the voltage differences between the first terminals G and the second terminals S of Q1 and Q2 are all lower than the turn-on voltage, Q1 and Q2 are turned on, and the path between the first interface 10 and the device power module 30 is turned on. At this time, the first voltage V1 may enter the device power module through Q1 and Q2 to supply power to the internal system and the battery.
In the second case of the first working mode, since the blind circuit in the embodiment is a symmetrical circuit, the working process refers to the first case of the first working mode, that is, when the first interface 10 is empty, the second interface 20 is connected to the second voltage V2, the second voltage V2 pulls up the second end G1 of the Q5 through the R10, and the first end of the Q5 is grounded through conduction, so the first ends of the controlled ends of the Q3 and Q4 are pulled down to be grounded, the Q3 and Q4 are conducted, and the V2 can enter the device power module through the Q3 and the Q4 to supply power to the internal system and the storage battery.
In the first case of the second operation mode, the first interface 10 is connected to the first voltage V1, the second interface 20 is connected to the second voltage V2, and if the voltage value of V1 is smaller than the voltage value of V2, the first end of Q9 is connected to V2, and the second end of Q9 is connected to V1 through R11, according to the conduction condition of the PNP transistor, i.e., U (E) is greater than U (B), because V1 is smaller than V2, the first end of Q9 is conducted to the third end. Because the second end of the Q7 is connected with the third end of the Q9, the pole G1 of the second end of the Q7 is pulled high, the pole S1 of the first end of the Q7 is grounded, the conduction condition is met, and the pole S1 of the first end of the Q7 is conducted with the pole D1 of the sixth end to be grounded; the fifth end G2 of Q5 is pulled down to ground, the third end and the fourth end of Q5 are turned off, resulting in that the first ends of the controlled ends of Q1 and Q2 connected are not pulled to ground, the conduction conditions of Q1 and Q2 are not satisfied, Q1 and Q2 are turned off, the path between the first interface 10 and the device power module 30 is turned off, while V2 pulls up the second end G1 of Q5 through R10, the first end and the sixth end of Q5 are conducted to ground, so the first ends of the controlled ends of Q3 and Q4 are pulled down to ground, Q3 and Q4 are conducted, and V2 enters the device power module through Q3 and Q4 to supply power to the internal system and the storage battery.
In the second case of the second working mode, since the blind circuit in the embodiment is a symmetrical circuit, in the first case of the working process referring to the second working mode, i.e. when the voltage value of V1 is greater than the voltage value of V2, Q3 and Q4 are turned off, Q1 and Q2 are turned on, and V1 enters the device power module through Q1 and Q2 to supply power to the internal system and the storage battery.
In the first case of the third mode of operation, the first interface 10 is connected to a DRP device (Dual Role Port), which is capable of providing both power and data, and also of taking power and providing data from the power device, typically a notebook computer, and the second interface 20 is connected to the second voltage V2. The DRP device accessed by the first interface communicates through a CC-Logic chip (Configuration Channel-Logic; a channel-Logic detection and control chip is configured to communicate between the interface and the device), and the detection identification pin outputs a first detection signal to a first detection pin CHT1 of the main control chip, so as to determine that power is not required to be supplied through a conversion module 31 of the device power module 30, that is, the DRP device voltage is the same as V2. After receiving the first detection signal, the main control chip U1 pulls down the first ends of the controlled ends of the Q1, the Q2, the Q3 and the Q4 to the ground through the PASS1 and the PASS2, namely the Q1, the Q2, the Q3 and the Q4 are conducted. Meanwhile, the first end of the Q12 is pulled up by V2 because the conduction of the Q2, the second end of the Q12 is connected with the first ends of the Q1 and the Q2 and pulled down to the ground by the PASS1 and the R18, at the moment, the Q12 meets the conduction condition, the first end and the third end of the Q12 are conducted, the first ends of the controlled ends of the Q10 and the Q11 are pulled up by V2, the Q10 and the Q11 are not turned off because the conduction condition is not met, the first end of the same Q15 is pulled up by V2, the second end of the Q15 is pulled down to the ground by the PASS2, the Q15 is conducted, the first ends of the controlled ends of the Q13 and the Q14 are pulled up to V2, and the Q13 and the Q14 are turned off. At this point, Q1, Q2, Q3, Q4 are on, and Q10, Q11, Q13, Q14 are off. The second voltage V2 may supply power to the DRP device while the battery and the internal system are being supplied.
In the second case of the third operation mode, since the blind-mate circuit in the present embodiment is a symmetrical circuit, the operation refers to the first case of the third operation mode, i.e. when the first interface 10 is connected to the first voltage V1, the second interface 20 is connected to the DRP device, and the DRP device voltage is the same as V1. When the DRP equipment is still successfully accessed, the main control chip conducts Q1, Q2, Q3 and Q4 through the PASS1 and the PASS2, and turns off Q10, Q11, Q13 and Q14, so that the first voltage V1 can supply power to the storage battery and the internal system and simultaneously supply power to the DRP equipment.
In the first case of the fourth operation mode, the first interface 10 is connected to the DRP device, the second interface 20 is connected to the second voltage V2, and first, the DRP device connected to the first interface communicates through the CC-Logic chip of the TYPE-C, outputs a first detection signal to the first detection pin CHT1 of the main control chip, and determines that the device voltage of the DRP is less than V2. When the DRP equipment is successfully connected and detected, the main control chip pulls up the second end G1 electrode of the Q16 through the EN2, the first end S1 electrode of the Q16 is grounded, and the conduction condition is met, so that the first end and the sixth end of the Q16 are conducted and grounded, the first end of the controlled end of the Q10 and the Q11 is grounded through the R17, the conduction condition is met, and the Q10 and the Q11 are conducted; in parallel, as can be seen from the first operation mode, since the second terminal G1 of the second interface 20 is connected to the second power source V2, the second terminal G1 of the Q5 is pulled high, and the first terminal and the sixth terminal of the Q5 are turned on, so that the Q4 and the Q5 are turned on; in parallel, as shown in the second working mode, since V2 is greater than the voltage of the DRP device, the voltage at the first terminal of Q9 is higher than the voltage at the second terminal, and the voltage at the first terminal of Q8 is lower than the voltage at the second terminal of Q10, Q9 is turned on, Q8 is turned off, so that the controlled terminals of Q1 and Q2 are not pulled down, the on condition is not satisfied, and Q1 and Q2 are turned off; in parallel, the second end of the Q15 is connected with the first ends of the Q4 and Q5, the second end of the Q15 is pulled to the ground, the first end of the Q15 is pulled up to V2 due to the conduction of the Q3 and Q4, the conduction condition is met, the first end of the Q15 is conducted with the third end, the second ends of the Q13 and Q14 are pulled up to V2, so the Q13 and Q14 do not meet the conduction regulation, and the Q13 and Q14 are turned off. At this moment, Q3, Q4, Q10, Q11 are turned on, Q1, Q2, Q13, Q14 are turned off, the path between the first interface and the output end of the device power module is turned on, the path between the second interface and the input end of the device power module is turned on, V2 can enter the device power module through Q3, Q4, while supplying power to the storage battery, V2 can also be input into the conversion module 31, and the same voltage as the DRP device is output to supply power to the DRP device connected with the first interface through Q10, Q11.
In the second case of the fourth operation mode, since the blind-mate circuit in the embodiment is a symmetrical circuit, the operation refers to the first case of the fourth operation mode, i.e. when the first interface 10 is connected to the first voltage V1 and the second interface 20 is connected to the DRP device, and the device voltage of the DRP is smaller than V1, the main control chip will pull up the second terminal G2 of the Q16 through EN1, so that the third terminal and the fourth terminal of the Q16 are grounded; at this moment, Q1, Q2, Q13, Q14 are turned on, Q3, Q4, Q10, Q11 are turned off, the path between the second interface and the output end of the device power module is turned on, the path between the first interface and the input end of the device power module is turned on, V1 can enter the device power module through Q1, Q2, while supplying power to the storage battery, V1 can also be input into the conversion module 31, and the same voltage as the DRP device is output to supply power to the DRP device connected with the second interface through Q13, Q14.
In the first case of the fifth working mode, the first interface 10 is connected to the DRP device, the second interface is suspended, the DRP device connected to the first interface communicates through the CC-Logic chip of the TYPE-C, and outputs a first detection signal to the first detection pin CHT1 of the main control chip, so that it is determined that power needs to be supplied to the DRP device through the storage battery. When the DRP equipment is successfully connected, the main control chip pulls the second end G1 of the Q16 high through the EN2, the first end S1 of the Q16 is grounded, the conduction condition is met, the first end and the sixth end of the Q16 are conducted and grounded, the first ends of the Q10 and the Q11 are pulled down to the ground through the R17, the conduction conditions of the Q10 and the Q11 are met, and the Q10 and the Q11 are conducted; in parallel, the fifth terminal G2 of Q5 is connected to the sixth terminal of Q16 through the first unidirectional conducting element and is pulled to ground, so that the conducting condition is not satisfied, the third and fourth terminals of Q5 are turned off, so that the controlled terminals of Q1 and Q2 are not pulled low, and Q1 and Q2 are turned off.
At this moment, Q10 and Q11 are turned on, Q1 and Q2 are turned off, the path between the first interface and the output end of the device power module is turned on, and the battery voltage can be input to the DRP device through Q10 and Q11 to supply power to the DRP device. In parallel, as EN1 does not act, Q13 and Q14 are turned off, if a second power supply is suddenly connected to the second interface at this moment, Q3 and Q4 can be turned on according to the first working mode, but since Q1, Q2, Q13 and Q14 are all turned off, DRP equipment is not affected, and safety is improved.
In the second case of the fifth working mode, since the blind circuit in the embodiment is a symmetrical circuit, the working process refers to the first case of the fifth working mode, i.e. when the first interface 10 is suspended and the second interface 20 is connected to the DRP device, the main control chip will pull up the second terminal G2 of the Q16 through EN1, so that the third terminal and the fourth terminal of the Q16 are grounded; q13, Q14 switch on, Q3, Q4 switch off, the passageway between second interface and the output of equipment power module switches on, and the battery voltage can be through Q13, Q14 input to DRP equipment, for the power supply of DRP equipment.
Through the five working modes, the blind insertion can be realized, and meanwhile, the compatibility and the cruising ability of the equipment can be improved.
The invention also provides a multi-interface electronic device, referring to fig. 1, the multi-interface electronic device comprises the blind-insert circuit and a device power module 30, wherein the output end of the second switch module of the blind-insert circuit is the output end of the blind-insert circuit, the input end of the power output module of the blind-insert circuit is the input end of the blind-insert circuit, the output end of the blind-insert circuit is connected with the input end of the device power module, and the input end of the blind-insert circuit is connected with the output end of the device power module. The specific circuit of the blind-mate circuit refers to the above embodiment, and because the multi-interface electronic device adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
Referring to fig. 5, in one embodiment, the device power module 30 includes:
The input end of the conversion module 31 is connected with the output end of the second switch module 50, and the output end of the conversion module 31 is connected with the output end of the power output module 70;
The conversion module 31 is configured to perform voltage conversion on a first voltage V1 connected to the first interface and output the converted voltage to the power output module 70 of the blind circuit, or perform voltage conversion on a second voltage V2 connected to the second interface and output the converted voltage to the power output module of the blind circuit. Through the conversion module, the charging action among the devices with different voltage standards can be realized, and the compatibility is improved.
Referring to fig. 5, in the embodiment, the first interface 10 is connected to the DRP device, the second interface 20 is connected to the second voltage V2, and first the DRP device connected to the first interface communicates through the CC-Logic chip of TYPE-C, outputs a first detection signal to the first detection pin CHT1 of the main control chip, and determines that the device voltage of the DRP is less than V2. When the DRP equipment is successfully connected and detected, the main control chip pulls up the second end G1 electrode of the Q16 through the EN2, the first end S1 electrode of the Q16 is grounded, and the conduction condition is met, so that the first end and the sixth end of the Q16 are conducted and grounded, the first end of the controlled end of the Q10 and the Q11 is grounded through the R17, the conduction condition is met, and the Q10 and the Q11 are conducted; in parallel, as can be seen from the first operation mode, since the second terminal G1 of the second interface 20 is connected to the second power source V2, the second terminal G1 of the Q5 is pulled high, and the first terminal and the sixth terminal of the Q5 are turned on, so that the Q4 and the Q5 are turned on; in parallel, as shown in the second working mode, since V2 is greater than the voltage of the DRP device, the voltage at the first terminal of Q9 is higher than the voltage at the second terminal, and the voltage at the first terminal of Q8 is lower than the voltage at the second terminal of Q10, Q9 is turned on, Q8 is turned off, so that the controlled terminals of Q1 and Q2 are not pulled down, the on condition is not satisfied, and Q1 and Q2 are turned off; in parallel, the second end of the Q15 is connected with the first ends of the Q4 and Q5, the second end of the Q15 is pulled to the ground, the first end of the Q15 is pulled up to V2 due to the conduction of the Q3 and Q4, the conduction condition is met, the first end of the Q15 is conducted with the third end, the second ends of the Q13 and Q14 are pulled up to V2, so the Q13 and Q14 do not meet the conduction regulation, and the Q13 and Q14 are turned off. At this moment, Q3, Q4, Q10, Q11 are turned on, Q1, Q2, Q13, Q14 are turned off, the path between the first interface and the output end of the device power module is turned on, the path between the second interface and the input end of the device power module is turned on, V2 can enter the device power module through Q3, Q4, while supplying power to the storage battery, V2 can also be input into the conversion module 31, and the same voltage as the DRP device is output to supply power to the DRP device connected with the first interface through Q10, Q11.
In the second case, since the blind-mate circuit in the embodiment is a symmetrical circuit, the working process refers to the first case, that is, when the first interface 10 is connected to the first voltage V1 and the second interface 20 is connected to the DRP device, and the device voltage of the DRP is smaller than V1, the main control chip will pull up the second terminal G2 of the Q16 through EN1, so that the third terminal and the fourth terminal of the Q16 are grounded; at this moment, Q1, Q2, Q13, Q14 are turned on, Q3, Q4, Q10, Q11 are turned off, the path between the second interface and the output end of the device power module is turned on, the path between the first interface and the input end of the device power module is turned on, V1 can enter the device power module through Q1, Q2, while supplying power to the storage battery, V1 can also be input into the conversion module 31, and the same voltage as the DRP device is output to supply power to the DRP device connected with the second interface through Q13, Q14.
Referring to fig. 5, in an embodiment, the device power module 30 further includes: the input end of the storage battery is connected with the output end of the second switch module, and the output end of the storage battery is connected with the input end of the power output module.
The storage battery inside the equipment can supply power to the equipment accessed by the interface through the storage battery, so that the endurance capacity of the access equipment is prolonged.
Referring to fig. 5, in this embodiment, the first interface 10 is connected to the DRP device, the second interface is suspended, and the DRP device connected to the first interface communicates through the CC-Logic chip of the TYPE-C, outputs a first detection signal to the first detection pin CHT1 of the main control chip, and determines that power needs to be supplied to the DRP device through the storage battery. When the DRP equipment is successfully connected, the main control chip pulls the second end G1 of the Q16 high through the EN2, the first end S1 of the Q16 is grounded, the conduction condition is met, the first end and the sixth end of the Q16 are conducted and grounded, the first ends of the Q10 and the Q11 are pulled down to the ground through the R17, the conduction conditions of the Q10 and the Q11 are met, and the Q10 and the Q11 are conducted; in parallel, the fifth terminal G2 of Q5 is connected to the sixth terminal of Q16 through the first unidirectional conducting element and is pulled to ground, so that the conducting condition is not satisfied, the third and fourth terminals of Q5 are turned off, so that the controlled terminals of Q1 and Q2 are not pulled low, and Q1 and Q2 are turned off.
At this moment, Q10 and Q11 are turned on, Q1 and Q2 are turned off, the path between the first interface and the output end of the device power module is turned on, and the battery voltage can be input to the DRP device through Q10 and Q11 to supply power to the DRP device. In parallel, as EN1 does not act, Q13 and Q14 are turned off, if a second power supply is suddenly connected to the second interface at this moment, Q3 and Q4 can be turned on according to the first working mode, but since Q1, Q2, Q13 and Q14 are all turned off, DRP equipment is not affected, and safety is improved.
In the second case, since the blind-mate circuit in the embodiment is a symmetrical circuit, the working process refers to the first case, that is, when the first interface 10 is suspended and the second interface 20 is connected to the DRP device, the main control chip will pull up the second terminal G2 of the Q16 through EN1, so that the third terminal and the fourth terminal of the Q16 are grounded; q13, Q14 switch on, Q3, Q4 switch off, the passageway between second interface and the output of equipment power module switches on, and the battery voltage can be through Q13, Q14 input to DRP equipment, for the power supply of DRP equipment.
The invention also provides a power supply system which comprises the blind-mate circuit and the multi-interface electronic equipment, and the specific circuits of the blind-mate circuit and the multi-interface electronic equipment refer to the embodiment.
The power supply system adopts all the technical schemes of all the embodiments, so that the power supply system has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (9)
1. A blind-mate circuit, the blind-mate circuit comprising:
the first interface is a full-function bidirectional interface and is used for accessing a first voltage;
the second interface is a full-function bidirectional interface and is used for accessing a second voltage;
the first switch module is provided with a first input end, a second input end, a first output end and a second output end, wherein the first input end of the first switch module is connected with the first interface, and the second input end of the first switch module is connected with the second interface; and is configured to output a first control signal when the voltage value of the first voltage is greater than the voltage value of the second voltage; outputting a second control signal when the voltage value of the first voltage is smaller than the voltage value of the second voltage;
The second switch module is provided with a first controlled end, a second controlled end, a first input end, a second input end, a first output end and a second output end, wherein the first controlled end of the second switch module is connected with the first output end of the first switch module, the second controlled end of the second switch module is connected with the second output end of the first switch module, the first input end of the second switch module is connected with the first interface, the first output end of the second switch module is connected with the input end of the equipment power module, the second input end of the second switch module is connected with the second interface, and the second output end of the second switch module is connected with the input end of the equipment power module; and is used for switching on a passage between the first interface and the equipment power module when receiving a first control signal; when a second control signal is received, a passage between the second interface and the equipment power module is conducted;
Wherein the first interface and the second interface are further used for accessing a DRP device;
The blind-mate circuit further includes: the power supply comparison module is provided with a first input end, a second input end, a first output end and a second output end, the first input end of the power supply comparison module is connected with the first interface, the first output end of the power supply comparison module is connected with the first controlled end of the second switch module, the second input end of the power supply comparison module is connected with the second interface, and the second output end of the power supply comparison module is connected with the second controlled end of the second switch module;
The power supply comparison module is used for outputting a first turn-off signal when the voltage value of the first voltage is smaller than the voltage value of the second voltage; outputting a second turn-off signal when the voltage value of the first voltage is larger than the voltage value of the second voltage;
The second switch module is used for switching off a passage between the first interface and the equipment power module when the first switch-off signal is received; and when the second turn-off signal is received, turning off a passage between the second interface and the equipment power module;
The control module is provided with a first input control end, a second input control end, a first output control end, a second output control end, a first detection end and a second detection end, wherein the first input control end of the control module is connected with the first controlled end of the second switch module, the second input control end of the control module is connected with the second controlled end of the second switch module, the first detection end of the control module is connected with the first interface, and the second detection end of the control module is connected with the second interface;
the first interface is used for acquiring a first detection signal through a detection pin of the first interface;
the second interface is used for acquiring a second detection signal through a detection pin of the second interface;
the control module is used for outputting a corresponding input conduction signal or an output conduction signal according to the first detection signal or the second detection signal;
The second switch module is used for conducting a corresponding channel according to the input conducting signal so as to supply power for at least one of the DRP equipment and the equipment power module.
2. The blind mate circuit of claim 1 wherein said first interface is any one of ase:Sub>A USB-ase:Sub>A full-function bi-directional interface, ase:Sub>A USB-B full-function bi-directional interface, ase:Sub>A USB-C full-function bi-directional interface.
3. The blind mate circuit of claim 1 wherein said second interface is any one of ase:Sub>A USB-ase:Sub>A full-function bi-directional interface, ase:Sub>A USB-B full-function bi-directional interface, ase:Sub>A USB-C full-function bi-directional interface.
4. A blind mate circuit according to any of claims 1-3, wherein the blind mate circuit further comprises:
The power supply output module is provided with a first input end, a second input end, a first output end, a second output end, a first controlled end and a second controlled end, wherein the first input end of the power supply output module is connected with the output end of the equipment power supply module, the first output end of the power supply output module is connected with the first interface, the second input end of the power supply output module is connected with the output end of the equipment power supply module, and the second output end of the power supply output module is connected with the second interface;
The power output module is used for outputting a power supply.
5. The blind mate circuit of claim 4 wherein a first output control terminal of the control module is connected to a first controlled terminal of the power output module and a second output control terminal of the control module is connected to a second controlled terminal of the power output module;
the power supply output module is used for conducting the corresponding channels according to the output conducting signals.
6. A multi-interface electronic device, characterized in that the multi-interface electronic device comprises a blind-plug circuit and a device power module according to any one of claims 1-5, wherein the output end of the second switch module of the blind-plug circuit is the output end of the blind-plug circuit, the input end of the power output module of the blind-plug circuit is the input end of the blind-plug circuit, the output end of the blind-plug circuit is connected with the input end of the device power module, and the input end of the blind-plug circuit is connected with the output end of the device power module.
7. The multi-interface electronic device of claim 6, wherein the device power module comprises:
The input end of the conversion module is connected with the output end of the second switch module, and the output end of the conversion module is connected with the input end of the power supply output module;
the conversion module is used for converting the first voltage accessed by the first interface into voltage and outputting the voltage to the power output module of the blind circuit, or converting the second voltage accessed by the second interface into voltage and outputting the voltage to the power output module of the blind circuit.
8. The multi-interface electronic device of claim 6, wherein the device power module further comprises:
The input end of the storage battery is connected with the output end of the second switch module, and the output end of the storage battery is connected with the input end of the power output module.
9. A power supply system, characterized in that it comprises a blind-mate circuit according to any of claims 1-5 and a multi-interface electronic device according to any of claims 6-8.
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| CN208156660U (en) * | 2018-04-20 | 2018-11-27 | 深圳市文鼎创数据科技有限公司 | The switching circuit and device for intelligently switching of double-USB interface |
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| US7688672B2 (en) * | 2005-03-14 | 2010-03-30 | Rambus Inc. | Self-timed interface for strobe-based systems |
| TWI495226B (en) * | 2012-11-30 | 2015-08-01 | Hon Hai Prec Ind Co Ltd | Charger and electronic device |
| WO2014169443A1 (en) * | 2013-04-17 | 2014-10-23 | 华为技术有限公司 | Identification circuit of power supply device, and powered device |
| CN111478595B (en) * | 2020-04-03 | 2025-01-14 | 秦皇岛泰和安科技有限公司 | Terminators and fire equipment control devices |
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| CN208156660U (en) * | 2018-04-20 | 2018-11-27 | 深圳市文鼎创数据科技有限公司 | The switching circuit and device for intelligently switching of double-USB interface |
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