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CN117040277B - Multi-path switch power supply system, control method, device and storage medium - Google Patents

Multi-path switch power supply system, control method, device and storage medium Download PDF

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Publication number
CN117040277B
CN117040277B CN202311245782.0A CN202311245782A CN117040277B CN 117040277 B CN117040277 B CN 117040277B CN 202311245782 A CN202311245782 A CN 202311245782A CN 117040277 B CN117040277 B CN 117040277B
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China
Prior art keywords
power supply
switching
control unit
control
input end
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Application number
CN202311245782.0A
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Chinese (zh)
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CN117040277A (en
Inventor
王福龙
张�杰
周勇
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Lii Semiconductor Inc
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Lii Semiconductor Inc
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Priority to CN202311245782.0A priority Critical patent/CN117040277B/en
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Classifications

    • 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
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/1566—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with means for compensating against rapid load changes, e.g. with auxiliary current source, with dual mode control or with inductance variation
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
    • 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
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • 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
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • 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
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • 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
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/157—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses a multi-path switch power supply system, a control method, equipment and a storage medium, which relate to the technical field of switch power supplies, and the multi-path switch power supply system comprises a control module and a switch module, wherein the control module generates a control signal for dynamically adjusting the conduction rate of a switch tube in the switch module based on the control module, the control signal controls the size of a switch power supply connected when the switch tube is conducted, the control scheme of controlling a plurality of loads by a single switching system is realized based on the fact that the switching module responds to the command signal to conduct corresponding power lines, and the reduction of the switching control cost is realized under the control scheme of avoiding the switching tube loss and the plurality of loads corresponding to the plurality of switching systems.

Description

Multi-path switch power supply system, control method, device and storage medium
Technical Field
The present invention relates to the field of switching power supply technologies, and in particular, to a multi-path switching power supply system, a control method, a device, and a storage medium.
Background
At present, a control scheme for a plurality of loads is generally to switch on and control the accessed loads by arranging a plurality of independent switching power supply devices, and although the requirements for switching on and off the loads can be met, the cost of the switch control is greatly improved by arranging a plurality of switching power supplies, meanwhile, the switching loss of a switching tube for switching on the switching power supplies and the loads is extremely high due to the fact that a hard switch exists in the switching power supplies, so that the switching tube is maintained frequently, and further the cost of the switch control is increased.
Disclosure of Invention
The invention mainly aims to provide a multi-path switching power supply system, a control method, equipment and a storage medium, and aims to solve the technical problem that the conventional control scheme has excessive switching control cost.
In order to achieve the above object, the present invention provides a multiple switching power supply system, which is connected to a load, the multiple switching power supply system comprising:
the control module is used for outputting a control signal;
The signal input end of the switch module is connected with the output end of the control module, the output end of the switch module is connected with the load, and the switch module is used for switching on the corresponding power supply line according to the accessed instruction signal, switching on the control signal based on the switched-on power supply line, and adjusting the size of the switch power supply output to the load according to the control signal.
Optionally, the control module includes: the dynamic power supply unit, the switching control unit and the amplifying unit;
The dynamic power supply unit is used for dynamically adjusting the output voltage source according to the switching signal of the switching control unit;
The switching control unit is used for generating and outputting control signals based on the voltage source and the reference voltage output by the dynamic power supply unit, the power supply control signal of the switching control unit is connected with the output end of the power supply control signal input end of the dynamic power supply unit, the power supply input end of the switching control unit is connected with the power supply output end of the dynamic power supply unit, and the control signal output end of the switching control unit is connected with the signal input end of the switch module;
the amplifying unit is used for amplifying an error value between the voltage source output by the dynamic power supply unit and the feedback voltage of the switching module into the switching control unit so that the switching control unit can generate the switching signal based on the error value and the reference voltage, the power supply input end of the amplifying unit is connected with the power supply output end of the dynamic power supply unit, and the output end of the amplifying unit is connected with the signal input end of the switching control unit.
Optionally, the dynamic power supply unit includes: the power supply control signal input end of the adjustable voltage source is connected with the power supply control signal output end of the switching control unit, and the power supply output end of the adjustable voltage source is respectively connected with the power supply input end of the switching control unit and the power supply input end of the amplifying unit.
Optionally, the switching control unit includes: a first comparator, a second comparator and a first control unit;
The first comparator is used for comparing the accessed first reference voltage with the voltage source to obtain a first comparison signal, the positive input end of the first comparator is connected with the power output end of the adjustable voltage source, the negative input end of the first comparator is accessed to the first reference voltage, and the output end of the first comparator is connected with the first signal input end of the first control unit;
the second comparator is used for comparing the accessed second reference voltage with the error value to obtain a second comparison signal, the non-inverting input end of the second comparator is accessed to the second reference voltage, the inverting input end of the second comparator is connected with the output end of the amplifying unit, and the output end of the second comparator is connected with the second signal input end of the first control unit;
The first control unit is used for converting the received first comparison signal and the second comparison signal and outputting the control signal and the switching signal, the control signal output end of the first control unit is connected with the signal input end of the switch module, and the power control signal output end of the first control unit is connected with the power control signal input end of the adjustable voltage source.
Optionally, the amplifying unit includes: an integrated operational amplifier;
The integrated operational amplifier is used for comparing the connected feedback voltage with the voltage source and outputting the error value, the non-inverting input end of the integrated operational amplifier is connected with the power output end of the adjustable voltage source, the inverting input end of the integrated operational amplifier is connected with the feedback voltage, and the output end of the integrated operational amplifier is connected with the inverting input end of the second comparator.
Optionally, the switch module includes: a second control unit;
the second control unit is used for converting the received control signal into a duty ratio, the signal input end of the second control unit is connected with the control signal output end of the first control unit, and the output ends of the second control unit are respectively connected with a plurality of power supply lines;
The power supply circuit comprises a first switching tube;
The control end of the first switching tube is connected with the output end of the second control unit, the input end of the first switching tube is connected with a switching power supply, and the output end of the first switching tube is connected with a load.
Optionally, the switch module includes: a second control unit;
The second control unit is used for converting the received control signal into an adjustment value, the signal input end of the second control unit is connected with the control signal output end of the first control unit, and the output ends of the second control unit are respectively connected with a plurality of power supply lines;
the power supply circuit comprises a second switching tube and an adjustable resistor;
One end of the adjustable resistor is connected with the control end of the second control unit, the other end of the adjustable resistor is connected with the control end of the second switching tube, the adjusting end of the adjustable resistor is connected with the output end of the second control unit, the input end of the second switching tube is connected with a switching power supply, and the output end of the second switching tube is connected with a load.
The invention also provides a control method, which comprises the following steps:
responding to an instruction signal, and controlling the power line reflected by the instruction signal to be conducted;
and accessing a control signal based on the conducted power supply line, and controlling the size of the accessed switching power supply according to the control signal.
In addition, in order to achieve the above object, the present invention also provides a multi-way switching power supply device, which includes a memory, a processor, and a computer processing program stored in the memory and executable on the processor, wherein the processor implements the steps of the control method when executing the computer processing program.
In addition, in order to achieve the above object, the present invention also provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the control method described above.
The invention designs a multi-path switching power supply system, which comprises a control module and a switching module, wherein a control signal for dynamically adjusting the conduction rate of a switching tube in the switching module is generated based on the control module, and the size of a switching power supply connected when the switching tube is conducted is controlled by the control signal, so that the condition that the switching tube has loss caused by voltage overshoot due to overlarge switching power supply connected is avoided, a corresponding power supply line is conducted based on the switching module in response to an instruction signal, the control scheme of controlling a plurality of loads by a single switching system is realized, and the reduction of the switching control cost is realized under the control scheme of avoiding the switching tube loss and the plurality of loads corresponding to the plurality of switching systems.
Drawings
FIG. 1 is a schematic diagram of a terminal structure of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a multiple switching power supply system according to the present invention;
FIG. 3 is a block diagram of a control module according to the present invention;
FIG. 4 is a schematic circuit diagram of a control module according to the present invention;
fig. 5 is a schematic circuit diagram of a first embodiment of a switch module according to the present invention;
fig. 6 is a schematic circuit diagram of a second embodiment of the switch module of the present invention;
FIG. 7 is a flow chart of a first embodiment of the control method of the present invention.
Reference numerals illustrate:
Reference numerals Name of the name Reference numerals Name of the name
10 Control module Q1-Q2 Switch tube
20 Switch module R1 Adjustable resistor
30 Dynamic power supply unit CC Control signal
40 Switching control unit SS Command signal
50 Amplifying unit VDD Voltage source
AVR Adjustable voltage source VFA Feedback voltage
U1-U2 Control unit VREF1-VREF2 Reference voltage
COMP1-COMP2 Comparator with a comparator circuit VFB Error value
IC1 Integrated operational amplifier
The implementation, 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
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, fig. 1 is a schematic diagram of a terminal structure of a hardware running environment according to an embodiment of the present invention.
The application carrier of the control method of the embodiment of the invention is a multi-path switching power supply device, as shown in fig. 1, the multi-path switching power supply device may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display area (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
Optionally, the multiple switching power supply device may further include a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. Among other sensors, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display screen according to the brightness of ambient light, and a proximity sensor that may turn off the display screen and/or the backlight when the mobile terminal moves to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and the direction when the mobile terminal is stationary, and the mobile terminal can be used for recognizing the gesture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; of course, the mobile terminal may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like, which are not described herein.
It will be appreciated by those skilled in the art that the configuration of the multiple switching power supply device shown in fig. 1 is not limiting and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a computer processing program may be included in the memory 1005, which is a type of computer storage medium.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a computer processing program stored in the memory 1005 and perform the following operations:
responding to an instruction signal, and controlling the power line reflected by the instruction signal to be conducted;
and accessing a control signal based on the conducted power supply line, and controlling the size of the accessed switching power supply according to the control signal.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a multiple switching power supply system of the present invention, the multiple switching power supply system being connected to a load, the multiple switching power supply system comprising:
The control module 10 is configured to output a control signal CC, and it should be noted that the control signal CC is configured to control the size of the switching power supply that the switching module 20 transmits to the load, and in this embodiment, the control module 10 receives a feedback voltage VFA when the switching module 20 outputs the switching power supply, and generates and outputs the control signal CC according to the feedback voltage VFA, the current output voltage source VDD of the dynamic power supply unit 30, and the set reference voltage, so as to dynamically adjust the size of the switching power supply to which the switching module 20 is connected, thereby avoiding the situation of loss of the switching module 20 caused by one-time connection to a larger switching power supply.
The signal input end of the switch module 20 is connected with the output end of the control module 10, the output end of the switch module 20 is connected with the load, and the switch module 20 is used for supplying power to the corresponding load based on a switching power supply system by switching on the corresponding load after the corresponding power supply circuit is conducted according to the received command signal SS, so as to adjust the size of the switching power supply output to the load according to the control signal CC, a plurality of loads can be connected to the output end of the switch module 20 in the embodiment, each load is connected to the switch module 20 through a separate power supply circuit, and after the corresponding power supply circuit is conducted by the switch module 20 according to the received command signal SS, the power supply circuit is connected to the corresponding load to supply power to the corresponding load.
Specifically, referring to fig. 3, the control module 10 includes: a dynamic power supply unit 30, a switching control unit 40, and an amplifying unit 50;
The power control signal input end of the dynamic power supply unit 30 is connected with the power control signal output end of the switching control unit 40, and the power output end of the dynamic power supply unit 30 is respectively connected with the power input end of the switching control unit 40 and the power input end of the amplifying unit 50;
the signal input end of the switching control unit 40 is connected with the output end of the amplifying unit 50, and the control signal output end of the switching control unit 40 is connected with the signal input end of the switch module 20.
In the present embodiment, the dynamic power supply unit 30 can dynamically adjust the output voltage source VDD according to the switching signal of the switching control unit 40, so that the switching control unit 40 can generate and output the control signal CC based on the adjusted voltage source VDD and the reference voltage, and the amplifying unit 50 is configured to amplify the error value VFB between the adjusted voltage source VDD and the feedback voltage VFA of the switching module 20 into the switching control unit 40, so that the switching control unit 40 generates the switching signal based on the amplified error and the reference voltage.
Specifically, referring to fig. 4, the dynamic power supply unit 30 includes: the power control signal input end of the adjustable voltage source AVR is connected with the power control signal output end of the switching control unit 40, and the power output end of the adjustable voltage source AVR is respectively connected with the power input end of the switching control unit 40 and the power input end of the amplifying unit 50.
As can be seen from fig. 4, the dynamic power supply unit 30 in this embodiment is an adjustable voltage source AVR, the power control signal input end of the adjustable voltage source AVR is connected to the power control signal output end of the switching control unit 40, and the voltage source VDD outputted by the adjustable voltage source AVR according to the received switching signal variation is related to the duty ratio of the switching tube in the switching module 20, and the higher the voltage source VDD, the higher the duty ratio, the larger the switching power to be switched in by the switching tube in the switching module 20.
The voltage source VDD output by the dynamic power supply unit 30 is transmitted to the switching control unit 40 and the amplifying unit 50, and is transmitted to the switching control unit 40, and is compared with the first reference voltage VREF1 connected to the switching control unit 40, and outputs a first comparison signal converted into a control signal CC, and is compared with the feedback voltage VFA connected to the amplifying unit 50, and an error value VFB between the feedback voltage VFA and the voltage source VDD is output to the switching control unit 40, and the switching control unit 40 outputs a second comparison signal converted into a switching signal according to the error value VFB and the second reference voltage VREF 2.
Further, the switching control unit 40 includes: a first comparator COMP1, a second comparator COMP2, and a first control unit U1;
The positive input end of the first comparator COMP1 is connected to the power output end of the adjustable voltage source AVR, the negative input end of the first comparator COMP1 is connected to a first reference voltage, the output end of the first comparator COMP1 is connected to the first signal input end of the first control unit U1, the positive input end of the second comparator COMP2 is connected to a second reference voltage, the negative input end of the second comparator COMP2 is connected to the output end of the amplifying unit 50, the output end of the second comparator COMP2 is connected to the second signal input end of the first control unit U1, the control signal output end of the first control unit U1 is connected to the signal input end of the switch module 20, and the power control signal output end of the first control unit U1 is connected to the power control signal input end of the adjustable voltage source AVR, where the first comparator COPM and the second comparator COPM in this embodiment use the first single-chip microcomputer DR 1 as the first control unit DR 1.
It should be noted that, the first reference voltage and the second reference voltage are both switching power supply values required by the load connected to the power line, and the first comparator COMP1 is configured to compare the first reference voltage with the voltage source VDD output by the current adjustable voltage source AVR, so as to obtain a duty ratio (a first comparison signal) of the switching tube on the current power line, and determine a voltage value required to be raised by the switching tube connected to the load; the second comparator COMP2 is configured to compare the second reference voltage with the error value VFB output from the amplifying unit 50, so as to obtain a voltage value (second comparison signal) that needs to be adjusted by the current adjustable voltage source AVR, and the first control unit U1 is configured to convert the first comparison signal input by the first comparator COMP1 and the second comparison signal input by the second comparator COMP2, and output a duty ratio (i.e. a control signal CC) of the switching tube to the switching module 20 and output the voltage value (i.e. a switching signal) that needs to be adjusted to the switching control unit 40, so as to realize soft on of the switching module 20, and avoid damage to devices caused by hard on.
Further, the amplifying unit 50 includes: an integrated operational amplifier IC1;
The non-inverting input end of the integrated operational amplifier IC1 is connected to the power output end of the adjustable voltage source AVR, the inverting input end of the integrated operational amplifier IC1 is connected to the feedback voltage VFA, and the output end of the integrated operational amplifier IC1 is connected to the inverting input end of the second comparator COMP2, wherein the model of the integrated operational amplifier in this embodiment is LM741.
It should be noted that, the feedback voltage VFA is the magnitude of the switching power supply to which the current switching transistor output by the switching module 20 is connected.
The integrated operational amplifier IC1 in this embodiment is configured to compare the feedback voltage VFA with the voltage source VDD output by the current adjustable voltage source AVR, so as to obtain an error value VFB between the two voltages, and determine, based on the error value VFB, a phase difference value between the voltage source VDD output by the current adjustable voltage source AVR and a switching power supply to which the current load is connected, so as to improve the accuracy of adjustment of the voltage source VDD.
Specifically, referring to fig. 5, the switch module 20 includes: a second control unit U2;
The signal input end of the second control unit U2 is connected with the control signal output end of the first control unit U1, the output end of the second control unit U2 is respectively connected with a plurality of power supply lines, the power supply lines comprise a first switch tube Q1, the control end of the first switch tube Q1 is connected with the output end of the second control unit U2, the input end of the first switch tube Q1 is connected with a switch power supply (namely VIN in FIG. 5), and the output end of the first switch tube Q1 is connected with a load, wherein the second control unit U2 is an ARM single chip microcomputer.
It should be noted that, fig. 5 is a first embodiment of a structure of the switch module 20, in the first embodiment, the switch module 20 includes a second control unit U2 and a first switch tube Q1 on a single power line, the second control unit U2 is configured to convert a received control signal CC into a value for adjusting a duty ratio of the first switch tube Q1, and the value is directly transmitted to a control end of the first switch tube Q1 through a conductive pin, so as to adjust the duty ratio of the first switch tube Q1, and based on the adjusted duty ratio, an input end of the first switch tube Q1 adjusts a size of an accessed switch power, and an output end of the first switch tube Q1 directly transmits the accessed switch power to a load, so as to implement power access of the load.
In the embodiment illustrated in fig. 5, the GPIO pin of the second control unit U2 is taken as an instruction receiving port, and when the second control unit U2 receives the instruction signal SS of 001 through the instruction receiving port GPIO, the signal input end x0 and the output end x1 are turned on; when the second control unit U2 receives 010 the command signal SS through the command receiving port GPIO, the signal input end x0 and the output end x2 are conducted; when the second control unit U2 receives the instruction signal SS of 100 through the instruction receiving port GPIO, the signal input end x0 and the output end x3 are turned on, and if other connected power lines exist, the corresponding output ends are turned on according to the conversion relationship between decimal and binary.
Specifically, referring to fig. 6, the switch module 20 includes: a second control unit U2;
The signal input end of the second control unit U2 is connected with the control signal output end of the first control unit U1, the output end of the second control unit U2 is respectively connected with a plurality of power lines, the power lines comprise a second switch tube Q2 and an adjustable resistor R1, one end of the adjustable resistor R1 is connected with the control end of the second control unit U2, the other end of the adjustable resistor R1 is connected with the control end of the second switch tube Q2, the adjusting end of the adjustable resistor R1 is connected with the output end of the second control unit U2, the input end of the second switch tube Q2 is connected with a switching power supply (namely VIN in FIG. 6), and the output end of the second switch tube Q2 is connected with a load, wherein the second control unit U2 is an ARM single-chip microcomputer.
Fig. 6 is a second embodiment of a structure of the switch module 20, in the second embodiment, the switch module 20 includes a second control unit U2, and a second switching tube Q2 and an adjustable resistor R1 on a single power line, the second control unit U2 converts a received control signal CC into an adjustment value for adjusting a resistance value of the adjustable resistor R1, the value is transmitted to an adjustment end of the adjustable resistor R1 through a conductive pin, the resistance value of the adjustable resistor R1 is adjusted, a duty ratio of a control unit input to the second switching tube Q2 is controlled based on the adjusted resistance value, so that the duty ratio of the second switching tube Q2 is adjusted, an input end of the second switching tube Q2 is adjusted to a size of an accessed switching power supply based on the adjusted duty ratio, and an output end of the second switching tube Q2 directly transmits the accessed switching power supply to a load.
In the embodiment illustrated in fig. 6, the GPIO pin of the second control unit U2 is taken as an instruction receiving port, and when the second control unit U2 receives the instruction signal SS of 001 through the instruction receiving port GPIO, the signal input end x0 and the output ends x1, r1 are turned on, at this time; when the second control unit U2 receives 010 the command signal SS through the command receiving port GPIO, the signal input end x0 and the output ends x2 and r2 are conducted; when the second control unit U2 receives the instruction signal SS of 100 through the instruction receiving port GPIO, the signal input end x0 and the output ends x3, r3 are turned on, and if other connected power supply lines exist, the corresponding output ends are turned on according to the conversion relationship between decimal and binary.
Specific examples are as follows:
Assuming that a certain power line is conducted, a switching power supply required by a load connected with the conducted power line is 12V, at the moment, a voltage source VDD output by an adjustable voltage source AVR is 3V, the switching power supply connected with the load is 2V, ① a second control unit U2 transmits a feedback voltage VFA generated by the 2V switching power supply to an integrated operational amplifier IC1, a non-inverting input end of the integrated operational amplifier IC1 is connected with the 3V voltage source VDD, an inverting input end of the integrated operational amplifier IC1 is connected with the 2V feedback voltage VFA to obtain a 1V error value VFB, the 1V error value VFB is transmitted to an inverting input end of a second comparator COMP2, at the same time, the non-inverting input end of the second comparator COMP2 is connected with a 12V second reference voltage, at the moment, the adjustable voltage source AVR adjusts the current output voltage source VDD according to the 11V switching signal, the 14V voltage source VDD is transmitted to the first comparator COMP1, at the moment, the first input end of the first comparator COMP1 is connected with the first reference voltage source VDD, and the load is connected with the first control unit COMP2, at the moment, the load is further connected with the first reference voltage source VDD is adjusted, and the load is connected with the first control unit COMP1, and the load is connected with the load 1;
② The non-inverting input end of the integrated operational amplifier IC1 is connected with a 14V voltage source VDD, the inverting input end is connected with a 4V feedback voltage VFA to obtain a 10V error value VFB, the 10V error value VFB is transmitted to the inverting input end of the second comparator COMP2, meanwhile, the non-inverting input end of the second comparator COMP2 is connected with a 12V second reference voltage, a 2V switching signal is output through the first control unit U1, the adjustable voltage source AVR adjusts the currently output voltage source VDD according to the 2V switching signal, the adjusted voltage source VDD is output to be 16V, the 16V voltage source VDD is transmitted to the non-inverting input end of the first comparator COMP1, meanwhile, the inverting input end of the first comparator COMP1 is connected with a 12V first reference voltage, the switch power supply connected with a power supply line is adjusted through the first control unit U1, and the switch power supply connected with the adjusted load is 8V, and the switch power supply does not reach the actual required adjustment of the load, so that the adjustment is continued;
③ The positive input end of the integrated operational amplifier IC1 is connected with a 16V voltage source VDD, the negative input end is connected with 8V peeping-proof voltage to obtain 8V error value VFB, the 8V error value VFB is transmitted to the negative input end of the second comparator COMP2, meanwhile, the positive input end of the second comparator COMP2 is connected with a 12V second reference voltage, a 4V switching signal is output through the first control unit U1, the adjustable voltage source AVR adjusts the current output voltage source VDD according to the 4V switching signal, the adjusted voltage source VDD is output, the 20V voltage source VDD is transmitted to the positive input end of the first comparator COMP1, meanwhile, the negative input end of the first comparator COMP1 is connected with a 12V first reference voltage, the first control unit U1 outputs a control signal CC of 6V to the second control unit U2, the second control unit U2 detects that the switching power supply connected to the power supply line is directly regulated based on the control signal CC of 6V, the condition that the regulated switching power supply connected to the load exceeds the switching power supply 12V required by the load exists, in order to avoid the condition that the load is input to the load and exceeds the switching power supply required by the load to cause load faults, the second control unit U2 regulates the control signal CC to 4V, and the second control unit U2 regulates the switching power supply connected to the power supply line through the control signal CC of 4V, so that soft starting of a switching tube on the power supply line is realized.
Referring to fig. 7, fig. 7 is a schematic flow chart of a first embodiment of the control method of the present invention, the control method includes the following steps:
Step S10, responding to the instruction signal, and controlling the power line reflected by the instruction signal to be conducted.
When receiving the command signal for switching on a certain power supply line, the control circuit controls the start of the output end connected with the power supply line according to the command signal at this time, so that the power supply line is switched on between the output end connected with the power supply line and the input end, thereby realizing the effect of controlling the power-on of a plurality of loads based on one switching power supply device, saving the high cost condition that the corresponding loads are required to be controlled respectively according to the corresponding number of switching power supply devices, and avoiding the condition of post maintenance loads caused by complex wiring between the corresponding number of switching power supply devices and the corresponding loads.
Step S20, based on the conducted power line access control signal, controlling the size of the accessed switching power supply according to the control signal.
The on power line is connected with a corresponding control signal, the size of the switching power supply connected with the switching tube on the current power line is controlled through the control signal, and the situation that the switching tube overshoots due to the fact that the switching tube is connected with the switching power supply too much once is avoided, and then the switching tube is damaged is avoided.
In this embodiment, by responding to the instruction signal, the power supply line reflected by the control instruction signal is turned on, the control signal is accessed based on the turned-on power supply line, and the size of the accessed switching power supply is controlled according to the control signal, so that soft opening of the switching tube is realized based on the control signal while a plurality of switching power supply devices are required to be correspondingly arranged, the situation that the switching tube is replaced due to loss of the switching tube is avoided, and the cost of switching control is greatly reduced.
In addition, the embodiment of the invention also provides a multi-path switch power supply device, which comprises a memory, a processor and a computer processing program stored on the memory and capable of running on the processor, wherein the processor realizes the steps of the control method when executing the computer processing program.
Furthermore, the present invention proposes a computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the steps of the control method described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method of the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (6)

1. A multiple switching power supply system, wherein the multiple switching power supply system is connected to a load, the multiple switching power supply system comprising:
the control module is used for outputting a control signal;
The signal input end of the switch module is connected with the output end of the control module, the output end of the switch module is connected with the load, and the switch module is used for switching on the corresponding power supply line according to the accessed instruction signal, and then switching on the control signal based on the switched-on power supply line so as to adjust the size of the switch power supply output to the load according to the control signal;
Wherein, the control module includes: the dynamic power supply unit, the switching control unit and the amplifying unit;
The dynamic power supply unit is used for dynamically adjusting the output voltage source according to the switching signal of the switching control unit;
The switching control unit is used for generating and outputting control signals based on the voltage source and the reference voltage output by the dynamic power supply unit, the power supply control signal of the switching control unit is connected with the output end of the power supply control signal input end of the dynamic power supply unit, the power supply input end of the switching control unit is connected with the power supply output end of the dynamic power supply unit, and the control signal output end of the switching control unit is connected with the signal input end of the switch module;
The amplifying unit is used for amplifying an error value between the voltage source output by the dynamic power supply unit and the feedback voltage of the switch module into the switching control unit so that the switching control unit can generate the switching signal based on the error value and the reference voltage, the power supply input end of the amplifying unit is connected with the power supply output end of the dynamic power supply unit, and the output end of the amplifying unit is connected with the signal input end of the switching control unit;
The dynamic power supply unit includes: the power supply control signal input end of the adjustable voltage source is connected with the power supply control signal output end of the switching control unit, and the power supply output end of the adjustable voltage source is respectively connected with the power supply input end of the switching control unit and the power supply input end of the amplifying unit;
the switching control unit includes: a first comparator, a second comparator and a first control unit;
The first comparator is used for comparing the accessed first reference voltage with the voltage source to obtain a first comparison signal, the positive input end of the first comparator is connected with the power output end of the adjustable voltage source, the negative input end of the first comparator is accessed to the first reference voltage, and the output end of the first comparator is connected with the first signal input end of the first control unit;
the second comparator is used for comparing the accessed second reference voltage with the error value to obtain a second comparison signal, the non-inverting input end of the second comparator is accessed to the second reference voltage, the inverting input end of the second comparator is connected with the output end of the amplifying unit, and the output end of the second comparator is connected with the second signal input end of the first control unit;
The first control unit is used for converting the received first comparison signal and the second comparison signal and outputting the control signal and the switching signal, the control signal output end of the first control unit is connected with the signal input end of the switch module, and the power control signal output end of the first control unit is connected with the power control signal input end of the adjustable voltage source;
the amplifying unit includes: an integrated operational amplifier;
The integrated operational amplifier is used for comparing the connected feedback voltage with the voltage source and outputting the error value, the non-inverting input end of the integrated operational amplifier is connected with the power output end of the adjustable voltage source, the inverting input end of the integrated operational amplifier is connected with the feedback voltage, and the output end of the integrated operational amplifier is connected with the inverting input end of the second comparator.
2. The multiple switching power supply system according to claim 1, wherein said switching module comprises: a second control unit;
the second control unit is used for converting the received control signal into a duty ratio, the signal input end of the second control unit is connected with the control signal output end of the first control unit, and the output ends of the second control unit are respectively connected with a plurality of power supply lines;
The power supply circuit comprises a first switching tube;
The control end of the first switching tube is connected with the output end of the second control unit, the input end of the first switching tube is connected with a switching power supply, and the output end of the first switching tube is connected with a load.
3. The multiple switching power supply system according to claim 1, wherein said switching module comprises: a second control unit;
The second control unit is used for converting the received control signal into an adjustment value, the signal input end of the second control unit is connected with the control signal output end of the first control unit, and the output ends of the second control unit are respectively connected with a plurality of power supply lines;
the power supply circuit comprises a second switching tube and an adjustable resistor;
One end of the adjustable resistor is connected with the control end of the second control unit, the other end of the adjustable resistor is connected with the control end of the second switching tube, the adjusting end of the adjustable resistor is connected with the output end of the second control unit, the input end of the second switching tube is connected with a switching power supply, and the output end of the second switching tube is connected with a load.
4. A control method, characterized in that the control method is applied to the multiple switching power supply system according to any one of claims 1 to 3, the control method comprising the steps of:
responding to an instruction signal, and controlling the power line reflected by the instruction signal to be conducted;
and accessing a control signal based on the conducted power supply line, and controlling the size of the accessed switching power supply according to the control signal.
5. A multiple switching power supply device, characterized in that the multiple switching power supply device comprises: memory, a processor and a computer processing program stored on the memory and executable on the processor, which processor implements the steps of the control method of claim 4 when the computer processing program is executed.
6. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the control method of claim 4.
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