CN115313593B - High-power supply charger - Google Patents
High-power supply charger Download PDFInfo
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- CN115313593B CN115313593B CN202210931531.7A CN202210931531A CN115313593B CN 115313593 B CN115313593 B CN 115313593B CN 202210931531 A CN202210931531 A CN 202210931531A CN 115313593 B CN115313593 B CN 115313593B
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- 239000003990 capacitor Substances 0.000 claims abstract description 70
- 230000001360 synchronised effect Effects 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000002401 inhibitory effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from AC input or output
- H02M1/123—Suppression of common mode voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from AC input or output
- H02M1/126—Arrangements for reducing harmonics from AC input or output using passive filters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention provides a high-power supply charger which comprises a PWM control circuit board, a synchronous rectification circuit board, a Type-C protocol control circuit board, a plug-in capacitor, a rectifier bridge stack, a common-mode inductor, a transformer, a safety capacitor and a Y1 capacitor, wherein the synchronous rectification circuit board is connected with the plug-in capacitor; the synchronous rectification circuit board, the Type-C protocol control circuit board, the plug-in capacitor, the rectifier bridge stack, the common mode inductor, the transformer, the safety capacitor and the Y1 capacitor are installed on the PWM control circuit board through a preset plug-in interface. The invention provides four-port output, the output has intelligent power distribution, the utilization rate of output power of a product is further improved, and meanwhile, the maximum output power of multiple ports can reach 120W; the invention has the advantages of small heating, prolonged service life of the product, short charging time and improved use experience of the user; the corresponding input power can be provided for different output terminals through power distribution, the service life of the power supply is prolonged, the energy loss is reduced, and the charging time is greatly shortened.
Description
Technical Field
The invention relates to the technical field of charging, in particular to a high-power supply charger.
Background
At present, a charger is a device for charging other electric appliances, which adopts a high-frequency power supply technology, applies an intelligent dynamic adjustment charging technology, utilizes an electronic semiconductor device to convert alternating current into direct current, and is generally formed by combining a circuit board, electronic components and a shell. The charger is widely applied at present, particularly in the living field, and is widely applied to common electrical appliances such as mobile phones, tablet computers and the like.
At present, the charging modes of the multi-port output charger in the market mainly comprise two modes: ① The plurality of output ports are all single fixed power output; ② The multi-port output has only a fixed number of power mode allocation outputs.
Along with the development of society and the continuous improvement of living standard of people, the output of a multi-port charger adopts power distribution, which is a trend of future development, and the current common power adapter and the multi-port charger adopt constant output power, but the method can not provide corresponding input power for different terminal devices.
Disclosure of Invention
The invention provides a high-power supply charger which is used for solving the problem that a common power supply adapter provides corresponding input power for different terminal devices at present.
A high power supply charger comprising:
PWM control circuit board, synchronous rectification circuit board, type-C protocol control circuit board, plug-in capacitance, rectifier bridge stack, common mode inductance, transformer, safety capacitor and Y1 capacitor; wherein,
The synchronous rectification circuit board, the Type-C protocol control circuit board, the plug-in capacitor, the rectifier bridge stack, the common mode inductor, the transformer, the safety capacitor and the Y1 capacitor are installed on the PWM control circuit board through a preset plug-in interface.
Further: an EMI circuit is arranged on the PWM control circuit board; wherein,
The EMI circuit is used for accessing an AC power supply;
the EMI circuit comprises a common mode inductor, a rectifier bridge, a safety capacitor and a Y1 capacitor; wherein,
The Y1 capacitor is electrically connected with the input end of the transformer;
The safety capacitor is connected in parallel with an AC power supply to carry out power supply filtering;
the input end of the common mode inductor is electrically connected with an AC power supply through the safety capacitor; wherein,
The common mode inductor is used for inhibiting external electromagnetic interference and inhibiting electromagnetic interference emitted by the high-power supply charger;
The output end of the common mode inductor is electrically connected with the input end of the rectifier bridge, and the output end of the rectifier bridge is electrically connected with the Y1 capacitor through a filter circuit; wherein,
The rectifier bridge is used for converting alternating current of the AC power supply into direct current;
the Y1 capacitor is used for suppressing common mode interference.
Further: the filter circuit is connected in parallel with a non-polar capacitor through a plurality of polar capacitors and filters direct current output by the EMI circuit; wherein,
The filter circuit is provided with a first plug-in capacitor and a second plug-in capacitor.
Further: the output end of the filter circuit is connected with a transformer circuit, the transformer circuit comprises a step-down transformer, and the step-down transformer is used for adjusting the voltage of the filtered direct current into a charging voltage.
Further: the synchronous rectification circuit board is provided with a synchronous rectification circuit and a loop control circuit; wherein,
The synchronous rectification circuit comprises a synchronous rectification chip and a MOSFET, wherein the synchronous rectification chip is used for regulating transient load and synchronously regulating charging voltage, and the MOSFET is used for reducing the loss of the rectification circuit;
The loop control circuit comprises a photoelectric coupler and a reference voltage comparator which are connected in series, wherein,
The photoelectric coupler is used for signal isolation;
the reference voltage comparator is used for adjusting the stability of the charging voltage.
Further: a PWM control circuit is arranged on the PWM control circuit board;
the PWM control circuit includes: a PWM control chip and an N channel enhanced MOS tube;
The PWM control chip is electrically connected with the EMI circuit and is used for determining output voltage;
The N-channel enhancement type MOS tube is electrically connected with the filter circuit and is used for outputting pulse signals.
Further: the Type-C protocol control circuit board comprises a first Type-C protocol control circuit board, a second Type-C protocol control circuit board, a third Type-C protocol control circuit board and a fourth Type-C protocol control circuit board,
The first Type-C protocol control circuit board and the second Type-C protocol control circuit board are provided with a first buck conversion circuit;
And the third Type-C protocol control circuit board and the fourth Type-C protocol control circuit board are provided with a second buck conversion circuit.
Further: the first buck conversion circuit includes:
The first buck conversion circuit includes:
the first buck-boost chip and the protocol chip;
the first buck-boost chip is electrically connected with the protocol chip;
the first buck-boost chip is used for regulating and controlling the working mode of the power supply; wherein,
The working modes comprise a boosting mode and a step-down mode;
the output voltage of the first buck-boost chip is controlled to be 100W and 60W;
The protocol chip supports QC4.0, USB PD3.0 and PPS protocol;
The protocol chip integrates a secondary feedback circuit, an output current sense amplifier, a clock circuit and a thermistor.
Further: the second buck conversion circuit includes:
The second buck-boost chip and the second protocol chip;
The second buck-boost chip is electrically connected with the second protocol chip;
the second buck-boost chip is used for regulating and controlling the working mode of the power supply; wherein,
The working modes comprise a boosting mode and a step-down mode;
the second buck-boost chip controls the output voltage to be 20W;
the second protocol chip supports QC4.0, USB PD3.0 and PPS protocol;
The protocol chip integrates a secondary feedback circuit, an output current sense amplifier, a clock circuit and a thermistor.
Further: the first Type-C protocol control circuit board, the second Type-C protocol control circuit board, the third Type-C protocol control circuit board and the fourth Type-C protocol control circuit board are connected with an MCU control circuit;
The MCU control circuit comprises an MCU chip;
a singlechip is arranged in the MCU chip;
The singlechip comprises a plurality of timer modules and is used for performing time measurement, capturing input, comparing and matching output, PWM output and single pulse output.
The invention has the beneficial effects that:
According to the charger with four-port output and intelligent power distribution, the utilization rate of output power of a product is further improved, and meanwhile, the maximum output power of multiple ports can reach 120W; the invention has the advantages of small heating, prolonged service life of the product, short charging time and improved use experience of the user; the corresponding input power can be provided for different output terminals through power distribution, the service life of the power supply is prolonged, the energy loss is reduced, and the charging time is greatly shortened.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a block diagram of a high power charger in an embodiment of the present invention;
FIG. 2 is a circuit diagram of a high power charger according to an embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of a high-power charger according to an embodiment of the present invention;
FIG. 4 is a schematic circuit diagram of the EMI circuit of FIG. 3A in accordance with an embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of the filtering circuit of FIG. 3B according to an embodiment of the present invention;
FIG. 6 is a schematic circuit diagram of the transformer circuit of FIG. 3C according to an embodiment of the present invention;
FIG. 7 is a schematic circuit diagram of the synchronous rectification circuit of FIG. 3D according to an embodiment of the present invention;
FIG. 8 is a schematic circuit diagram of the loop control circuit of FIG. 3E according to an embodiment of the present invention;
FIG. 9 is a schematic circuit diagram of the area PWM control circuit of FIG. 3F according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a first buck-boost chip circuit of a first buck-boost converter circuit according to an embodiment of the invention;
FIG. 11 is a schematic diagram of a first protocol chip circuit of a first buck converter circuit according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a second buck-boost chip circuit of a second buck-boost converter circuit according to an embodiment of the invention;
FIG. 13 is a schematic diagram of a second protocol chip circuit of a second buck converter circuit according to an embodiment of the present invention;
Fig. 14 is a schematic circuit diagram of an MCU control circuit according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
As shown in fig. 1, the present invention is a high-power charger, comprising:
The synchronous rectifier circuit comprises a PWM control circuit board 1, a synchronous rectifier circuit board 2, a Type-C protocol control circuit board 3, a plug-in capacitor, a rectifier bridge stack 5, a common mode inductor 7, a transformer 8, a safety capacitor 9 and a Y1 capacitor 10; wherein,
The synchronous rectification circuit board 2, the Type-C protocol control circuit board 3, the plug-in capacitance, the rectifier bridge stack 5, the common mode inductance 7, the transformer 8, the safety capacitor 9 and the Y1 capacitor 10 are arranged on the PWM control circuit board 1 through a preset plug-in interface.
The principle of the invention is as follows: the invention relates to a charger with a plurality of high-power charging ports.A PWM control circuit board is used as a carrier circuit board and is used for sending PWM pulse signals and externally connecting an external power supply; the synchronous rectification circuit board carries out circuit rectification, so that the stability of input elegance is ensured; the Type-C protocol control circuit board 3 comprises four charging ports, and is used for realizing charging through different output powers, and simultaneously suppressing electromagnetic interference in a charging process through an EMI circuit and a filter circuit which are formed by a plug-in capacitor, a rectifier bridge stack 5, a common mode inductor 7, a transformer 8, a safety capacitor 9 and a Y1 capacitor 10. The plug-in capacitors of the present invention are also filter circuits, and EC2 and EC4 in fig. 5 mainly perform filtering. Compared with a filter circuit in the prior art, EC2 and EC4 are filtered in the filter circuit, the safety capacitor filters an accessed AC circuit, and the Y1 capacitor filters before transformation, so that triple filtering is realized.
The invention has the beneficial effects that: according to the charger with four-port output and intelligent power distribution, the utilization rate of output power of a product is further improved, and meanwhile, the maximum output power of multiple ports can reach 120W; the invention has multiple filtering functions, and has more stable charging characteristics compared with a high-power charger on the market. The invention has the advantages of small heating, prolonged service life of the product, short charging time and improved use experience of the user; the corresponding input power can be provided for different output terminals through power distribution, the service life of the power supply is prolonged, the energy loss is reduced, and the charging time is greatly shortened.
Further: an EMI circuit is arranged on the PWM control circuit board 1; wherein,
The EMI circuit is used for accessing an AC power supply;
the EMI circuit comprises a common mode inductor 7, a rectifier bridge DB1, a safety capacitor and a Y1 capacitor 10; wherein,
The Y1 capacitor 10 is electrically connected with the input end of the transformer 8;
The safety capacitor is connected in parallel with an AC power supply to carry out power supply filtering;
The input end of the common mode inductor 7 is electrically connected with an AC power supply through the safety capacitor 9; wherein,
The common mode inductor 7 is used for inhibiting external electromagnetic interference and inhibiting electromagnetic interference emitted by the high-power supply charger;
The output end of the common mode inductor 7 is electrically connected with the input end of the rectifier bridge DB1, and the output end of the rectifier bridge DB1 is electrically connected with the Y1 capacitor 10 through a filter circuit; wherein,
The rectifier bridge DB1 is used for converting alternating current of the AC power supply into direct current
The Y1 capacitor 10 is used to suppress common mode interference.
The principle of the technical scheme is as follows: as shown in fig. 2, fig. 3 and fig. 4, the EMI circuit of the present invention is a circuit with common mode induction, which can be externally connected with an external power supply, and the common mode inductance, the rectifier bridge stack, the safety capacitor and the Y1 capacitor all belong to the EMC circuit, and are always external electromagnetic interference and self electromagnetic interference. Meanwhile, the invention has a rectifier bridge to realize rectification, and filtering is carried out after rectification. The Y1 capacitor 10 is also CY1 and is connected to a transformer as can be seen in fig. 6 for transformer protection prior to transformation.
The invention is implemented by switching in alternating current through L and N in figure 4, namely zero line and live line, then switching in filtering through F1 this safety capacitor, after switching in filtering, inhibit electromagnetic interference through common mode inductance that L7, L8 and CX1 form, this electromagnetic interference includes electromagnetic interference of oneself and external electromagnetic interference, the invention is different from the prior art in that the invention uses safety capacitor F1, but not the universal fuse of the prior art, because the invention supports 120W to charge soon, there is multiple step down subsequently, will not appear and overflow the phenomenon of the overvoltage, so does not need the fuse.
The beneficial effects of the technical scheme are that: through the cooperative work of the common mode inductance, the common mode inductance is not interfered by other equipment during the work, and meanwhile, the common mode inductance cannot influence the work of other equipment.
Further: the filter circuit is connected in parallel with a non-polar capacitor through a plurality of polar capacitors and filters direct current output by the EMI circuit; wherein,
The filter circuit is provided with a first plug-in capacitor 4 and a second plug-in capacitor 6.
The principle of the technical scheme is as follows: as shown in fig. 5, the invention is a multi-filtering filter circuit, two plug-in capacitors are arranged in the filter circuit for filtering, and a plurality of polar capacitors and a non-polar capacitor are connected in parallel, so that the filtering efficiency is increased.
The beneficial effects of the technical scheme are that: and charging and filtering are carried out to prevent electromagnetic interference.
Further: the output end of the filter circuit is connected with a transformer 8, the transformer 8 is a step-down transformer, and the step-down transformer is used for adjusting the voltage of the filtered direct current to be a charging voltage.
The principle of the technical scheme is as follows: as shown in fig. 6, the transformer of the present invention is a step-down transformer, which adjusts 220V voltage to a low voltage that can be charged.
The beneficial effects of the technical scheme are that: and carrying out voltage regulation to realize charging.
Further: the synchronous rectification circuit board (2) is provided with a synchronous rectification circuit and a loop control circuit; wherein,
The synchronous rectification circuit comprises a synchronous rectification chip U12 and a MOSFET, wherein the synchronous rectification chip is used for regulating transient load and synchronously regulating charging voltage, and the MOSFET is used for shunting the rectification circuit to reduce voltage loss;
The MOSFET comprises a first MOSFET Q9 and a second MOSFET Q11;
the loop control circuit comprises a photo coupler U11A and a reference voltage comparator U14 connected in series, wherein,
The photoelectric coupler U11A is used for signal isolation;
the reference voltage comparator U14 is used to adjust the stability of the charging voltage.
The principle of the technical scheme is as follows: the invention as shown in fig. 7 and fig. 8 improves the output efficiency through the synchronous rectification chip; the loop control circuit is formed by two photoelectric couplers connected in series and surrounding elements, so that circuit adjustment is performed, and the stability of the loop is maintained. Synchronous rectification is to improve the power efficiency, and it uses the power MOSFET with extremely low on-state resistance to replace the rectifying diode, so that on one hand, the loss of the rectifying circuit can be greatly reduced, and meanwhile, the efficiency of the DC/DC converter can be improved, thereby meeting the requirements of the low-voltage and high-current rectifier. The loop control is to ensure the stability of the output voltage, obtain a voltage by sampling at the output end, then compare the voltage with the reference voltage, send the voltage to the operational amplifier to amplify the obtained current, and finally control the duty ratio of the input end by the optocoupler to stabilize the output voltage. A stable feedback line is very important for a switching power supply, and if there is not enough phase margin and amplitude margin, the dynamic response performance of the power supply is very poor, and even an oscillation phenomenon may occur. The invention is different from the prior art in that synchronous rectification is adopted, so that the charging efficiency is increased, voltage fluctuation is not generated, and the loop compensation circuit is an auxiliary circuit of the synchronous rectification circuit and is used for synchronous compensation.
Shunt regulation of the first MOSFET Q9 and the second MOSFET Q11 in the present invention is also used to reduce circuit losses, wherein:
the circuit loss is shown as follows:
wherein, Representing the input current after transformation of the transformer; representing the on-resistance of the synchronous rectification circuit; representing the first MOSFET Q9 drain voltage; Representing the second MOSFET Q11 drain voltage; Representing circuit loss; indicating an open circuit time, i.e., a charging time of the charger; Representing the charging frequency;
In the prior art, no two mos tubes are used for shunt adjustment;
represents the voltage transformed by the transformer 8;
in implementation, if specific values are substituted: Is 2; Is 2; Is 2; For 10 minutes; 1 is shown in the specification;
=24
It is evident that the circuit loss of the present invention is lower than the loss without MOSFET tubes in the prior art.
The beneficial effects of the technical scheme are that: the stability of the circuit is improved, and the circuit oscillation phenomenon is prevented.
Further: a PWM control circuit is arranged on the PWM control circuit board 1;
the PWM control circuit includes: PWM control chip U13 and N channel enhancement type MOS tube Q8;
The PWM control chip U13 is electrically connected with the EMI circuit, and the PWM control chip U13 is used for determining output voltage;
The N-channel enhancement type MOS tube Q8 is electrically connected with the filter circuit, and the N-channel enhancement type MOS tube Q8 is used for outputting pulse signals.
The principle of the technical scheme is as follows: as shown in fig. 9, the control mode of the present invention is a control circuit based on PWM pulse signals, which converts AC alternating current into stable direct current output, and provides stable output voltage through PWM control chips U13 (NCP 1342AMDCDAD1R 2G) and Q8. The control mode is to control the on-off of the switching device of the inverter circuit, so that a series of pulses with equal amplitude are obtained at the output end. These pulses are used to replace the sine wave or the desired waveform, that is, a plurality of pulses are generated in half the period of the output waveform, so that the equivalent voltage of each pulse is a sine waveform, and the obtained output is smooth and has few lower harmonics. The width of each pulse is modulated according to a certain rule, so that the output voltage of the inverter circuit can be changed, and the output frequency can be changed. PWM signals can be directly output through the internal module of the chip, because the integrated module is arranged on the self I/O port, the functional module of PWM output is simpler and more convenient in program design, and meanwhile, the output data is more accurate.
Further: the Type-C protocol control circuit board 3 comprises a first Type-C protocol control circuit board, a second Type-C protocol control circuit board, a third Type-C protocol control circuit board and a fourth Type-C protocol control circuit board,
The first Type-C protocol control circuit board and the second Type-C protocol control circuit board are provided with a first buck conversion circuit;
And the third Type-C protocol control circuit board and the fourth Type-C protocol control circuit board are provided with a second buck conversion circuit.
The principle of the technical scheme is as follows: as shown in fig. 9, fig. 10, fig. 11 and fig. 12, the Buck protocol chip is only a Buck-boost chip, the Buck and boost are the working modes of the power circuit, and most power ICs can support the Buck and boost modes at the same time without protocol compliance. The chip of the Siplacian CYPD3175 can support QC4.0, USB PD3.0 and PPS protocol, integrates secondary feedback and output current detection amplifiers, is internally provided with multiple perfect system level protection, is internally provided with a 32-bit MCU and a clock, supports a wide working voltage range of 3-24.5V, and is provided with a thermistor on the left side for detecting the temperature of an adapter and performing temperature protection.
Further: the first buck conversion circuit includes:
the first buck-boost chip U1 and the first protocol chip U4;
The first buck-boost chip U1 is electrically connected with the first protocol chip U4;
the first buck-boost chip U1 is used for regulating and controlling the working mode of the power supply; wherein,
The working modes comprise a boosting mode and a step-down mode;
the first buck-boost chip U1 controls the output voltage to be 100W and 60W;
the first protocol chip U4 supports QC4.0, USB PD3.0 and PPS protocols;
The first protocol chip U4 integrates a secondary feedback circuit, an output current detection amplifier, a clock circuit and a thermistor.
Further: the second buck conversion circuit includes:
a second buck-boost chip U7 and a second protocol chip U8;
the second buck-boost chip U7 is electrically connected with the second protocol chip U8;
The second buck-boost chip U7 is used for regulating and controlling the working mode of the power supply; wherein,
The working modes comprise a boosting mode and a step-down mode;
the second buck-boost chip U7 controls the output voltage to be 20W;
The second protocol chip U8 supports QC4.0, USB PD3.0 and PPS protocols;
The second protocol chip U8 integrates a secondary feedback circuit, an output current detection amplifier, a clock circuit and a thermistor.
Further: the first Type-C protocol control circuit board, the second Type-C protocol control circuit board, the third Type-C protocol control circuit board and the fourth Type-C protocol control circuit board are connected with an MCU control circuit; the four output ports of the invention have the same principle, and the Buck chips adopted by the type-c1 and type-c2 ports are different from the type-c 3 and type-c4, because the type-c1 and type-c2 ports can respectively support the maximum output of 100W and 60W, and the type-c 3 and type-c4 can support the maximum output of 20W, thus different charging requirements of customers can be met.
The MCU control circuit comprises an MCU chip U15;
the MCU chip U15 is internally provided with a singlechip;
the singlechip comprises a plurality of timer modules and is used for performing time measurement, capturing input, comparing and matching output, PWM output and single pulse output.
The principle of the technical scheme is as follows: the MCU chip of the invention is a chip with a built-in singlechip, as shown in figure 14. The MCU chip is preferably an HT66F0195 chip, a singlechip of EEPROM A/D Flash is arranged in the MCU chip, and a plurality of timer modules are arranged in the MCU chip and can be used for time measurement, capturing input, comparing matching output, PWM output and single pulse output.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (5)
1. A high power supply charger, comprising:
The device comprises a PWM control circuit board (1), a synchronous rectification circuit board (2), a Type-C protocol control circuit board (3), a plug-in capacitor, a rectifier bridge stack (5), a common mode inductor (7), a transformer (8), a safety capacitor (9) and a Y1 capacitor (10); wherein,
The synchronous rectification circuit board (2), the Type-C protocol control circuit board (3), the plug-in capacitors, the rectification bridge stack (5), the common mode inductor (7), the transformer (8), the safety capacitor (9) and the Y1 capacitor (10) are arranged on the PWM control circuit board (1) through preset plug-in interfaces;
The synchronous rectification circuit board (2) is provided with a synchronous rectification circuit and a loop control circuit; wherein,
The synchronous rectification circuit comprises a synchronous rectification chip (U12) and a MOSFET, wherein the synchronous rectification chip is used for regulating transient load and synchronously regulating charging voltage, and the MOSFET is used for shunting the rectification circuit;
the MOSFET tubes comprise a first MOSFET tube (Q9) and a second MOSFET tube (Q11);
The loop control circuit comprises a photo coupler (U11A) and a reference voltage comparator (U14) which are connected in series, wherein,
The photoelectric coupler (U11A) is used for signal isolation;
The reference voltage comparator (U14) is used for adjusting the stability of the charging voltage;
Shunt regulation of the first MOSFET tube (Q9) and the second MOSFET tube (Q11) is also used to reduce circuit losses, wherein:
the circuit loss is shown as follows:
wherein, Representing the input current after transformation of the transformer; representing the on-resistance of the synchronous rectification circuit; representing the first MOSFET Q9 drain voltage; Representing the second MOSFET Q11 drain voltage; Representing circuit loss; indicating an open circuit time, i.e., a charging time of the charger; Representing the charging frequency;
A PWM control circuit is arranged on the PWM control circuit board (1);
the PWM control circuit includes: a PWM control chip (U13) and an N-channel enhancement type MOS tube (Q8);
the PWM control chip (U13) is electrically connected with the EMI circuit, and the PWM control chip (U13) is used for determining output voltage;
the N-channel enhancement type MOS tube (Q8) is electrically connected with the filter circuit, and the N-channel enhancement type MOS tube (Q8) is used for outputting pulse signals;
The Type-C protocol control circuit board (3) comprises a first Type-C protocol control circuit board, a second Type-C protocol control circuit board, a third Type-C protocol control circuit board and a fourth Type-C protocol control circuit board,
The first Type-C protocol control circuit board and the second Type-C protocol control circuit board are provided with a first buck conversion circuit;
The third Type-C protocol control circuit board and the fourth Type-C protocol control circuit board are provided with a second buck conversion circuit;
The first buck conversion circuit includes:
A first buck-boost chip (U1) and a first protocol chip (U4);
The first buck-boost chip (U1) is electrically connected with the first protocol chip (U4);
the first buck-boost chip (U1) is used for regulating and controlling the working mode of the power supply; wherein,
The working modes comprise a boosting mode and a step-down mode;
The first buck-boost chip (U1) controls output voltage to be 100W and 60W;
The first protocol chip (U4) supports QC4.0, USB PD3.0 and PPS protocols;
the first protocol chip (U4) integrates a secondary feedback circuit, an output current detection amplifier, a clock circuit and a thermistor;
the second buck conversion circuit includes:
a second buck-boost chip (U7) and a second protocol chip (U8);
the second buck-boost chip (U7) is electrically connected with the second protocol chip (U8);
the second buck-boost chip (U7) is used for regulating and controlling the working mode of the power supply; wherein,
The working modes comprise a boosting mode and a step-down mode;
The second buck-boost chip (U7) controls the output voltage to be 20W;
The second protocol chip (U8) supports QC4.0, USB PD3.0 and PPS protocols;
The second protocol chip (U8) integrates a secondary feedback circuit, an output current sense amplifier, a clock circuit, and a thermistor.
2. A high power supply charger according to claim 1, characterized in that the PWM control circuit board (1) is provided with EMI circuitry; wherein,
The EMI circuit is used for accessing an AC power supply;
the EMI circuit comprises a common mode inductor (7), a rectifier bridge (DB 1), a safety capacitor and a Y1 capacitor (10); wherein,
The Y1 capacitor (10) is electrically connected with the input end of the transformer (8);
The safety capacitor is connected in parallel with an AC power supply to carry out power supply filtering;
the input end of the common mode inductor (7) is electrically connected with an AC power supply through the safety capacitor (9); wherein,
The common mode inductor (7) is used for inhibiting external electromagnetic interference and inhibiting electromagnetic interference emitted by the high-power supply charger;
The output end of the common mode inductor (7) is electrically connected with the input end of the rectifier bridge (DB 1), and the output end of the rectifier bridge (DB 1) is electrically connected with the Y1 capacitor (10) through a filter circuit; wherein,
-Said rectifier bridge (DB 1) is adapted to convert the alternating current of said AC power source into direct current;
the Y1 capacitor (10) is used for suppressing common mode interference.
3. The high power supply charger of claim 2 wherein said filter circuit is connected in parallel with a non-polar capacitor through a plurality of polar capacitors and filters the dc power output by said EMI circuit; wherein,
The filter circuit is provided with a first plug-in capacitor (4) and a second plug-in capacitor (6).
4. A high power supply charger as claimed in claim 1, characterized in that the output of the filter circuit is connected to a transformer (8), the transformer (8) being a step-down transformer for regulating the voltage of the filtered dc power to a charging voltage.
5. The high-power supply charger of claim 1, wherein the first Type-C protocol control circuit board, the second Type-C protocol control circuit board, the third Type-C protocol control circuit board and the fourth Type-C protocol control circuit board are connected with an MCU control circuit;
The MCU control circuit comprises an MCU chip (U15);
the MCU chip (U15) is internally provided with a singlechip;
the singlechip comprises a plurality of timer modules and is used for performing time measurement, capturing input, comparing and matching output, PWM output and single pulse output.
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| CN115765497A (en) * | 2022-11-16 | 2023-03-07 | 湖南炬神电子有限公司 | Gallium nitride multi-port small-volume circuit |
| CN116345651A (en) * | 2023-02-22 | 2023-06-27 | 湖南炬神电子有限公司 | Small-size two-in-one power supply |
| CN116760135A (en) * | 2023-06-13 | 2023-09-15 | 东莞市颜仔电子科技有限公司 | Multi-fast charging protocol power adapter and control method thereof |
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