WO2024016997A1 - Circuit d'attaque et alimentation à découpage - Google Patents

Circuit d'attaque et alimentation à découpage Download PDF

Info

Publication number
WO2024016997A1
WO2024016997A1 PCT/CN2023/104086 CN2023104086W WO2024016997A1 WO 2024016997 A1 WO2024016997 A1 WO 2024016997A1 CN 2023104086 W CN2023104086 W CN 2023104086W WO 2024016997 A1 WO2024016997 A1 WO 2024016997A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching device
energy storage
terminal
power supply
storage inductor
Prior art date
Application number
PCT/CN2023/104086
Other languages
English (en)
Chinese (zh)
Inventor
张文林
王军科
陈悦
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024016997A1 publication Critical patent/WO2024016997A1/fr

Links

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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • 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

Definitions

  • This application relates to the field of driving energy recovery, and in particular to a driving circuit and a switching power supply.
  • larger-sized power tubes are needed in switching power supplies to reduce conduction losses, but larger-sized power tubes also mean larger gate capacitance, which also leads to larger power tube drive. Loss and driving loss limit the improvement of the overall efficiency of the switching power supply.
  • the conventional power tube driving method is that the power supply first guides the charge to the gate of the power tube to turn on the power tube, and then the power supply guides the charge from the gate to discharge the charge to the ground to turn off the power tube. Every time a switching action is performed, the driving energy (charge) will be discharged to the ground, causing energy loss.
  • the above schemes basically use energy storage components to recover the gate discharge charge of the power tube that was originally discharged to the ground, and use it to drive the power tube in the next cycle.
  • the existing technology stores the gate discharge charge by adding an inductor, and since the current on the inductor cannot suddenly change, the current can flow back to the power supply, thereby achieving energy recovery.
  • the freewheeling diode in a transistor (such as a MOS transistor or a field effect transistor, etc.) is usually used for freewheeling conduction during the energy recovery stage, so that the charge stored in the inductor is Energy can flow back into the power source.
  • the current in the inductor flows back through the freewheeling diode, it causes a large energy loss, resulting in a decrease in the energy recovery rate.
  • the current can directly pass through the channel of the transistor without freewheeling through the freewheeling diode, it can It greatly reduces the conduction loss during freewheeling and effectively improves the energy recovery rate.
  • using the channel of a transistor to pass current requires extremely high timing for channel closing.
  • This application provides a drive circuit and switching power supply to improve the current freewheeling method in the energy recovery stage and greatly increase the energy recovery rate.
  • this application provides a driving circuit for driving a power tube, including a control circuit, an energy recovery circuit, a duration determination circuit and an input power supply.
  • the energy recovery circuit includes: multiple switching devices and an energy storage inductor; the duration determination circuit The circuit is used to determine the target duration; the energy recovery circuit is electrically connected to the input power supply and is used under the control of the control circuit to: charge the energy storage inductor along the first current direction according to the target duration; turn on the power tube; control multiple switching devices. At least one switching device is turned on through the channel for a target duration to return the energy stored in the energy storage inductor to the input power supply; the energy storage inductor is charged along the second current direction for the target duration; the power tube is turned off; and multiple switching devices are controlled. At least one switching device is turned on through the channel for a target period of time to flow energy stored in the energy storage inductor back to the input power supply.
  • the recovery of driving energy can be mainly divided into three stages: the energy storage inductor charging stage (the first stage), the power tube opening/closing stage (the second stage), and the energy storage inductor energy recovery stage (the third stage). If you want to further improve the energy recovery rate, in the third stage, the switching device in the energy recovery circuit needs to be turned on through the channel to reduce energy loss. However, it is currently impossible to accurately determine the exact timing of channel closing of the switching device, so in the third stage In the third stage, the freewheeling diode freewheeling conduction method is still used to achieve energy recovery, sacrificing the energy recovery rate.
  • the circuit length before turning on/off the power tube, you can first determine the target length of time for the input power supply to charge the energy storage inductor (the length of the first stage), and control multiple switching devices during the energy recovery stage. At least one switching device is turned on for a target time through the channel to flow the energy stored in the energy storage inductor back to the input power supply through the channel, because the current flows back to the input power through the channel. There is no power consumption, so there is no energy consumption, thus greatly improving the energy recovery rate.
  • the current on the energy storage inductor will rise with the first slope.
  • the magnitude of the current flowing on the energy storage inductor also changes. The rise will continue with a slope smaller than the first slope.
  • the current on the energy storage inductor will decrease with a second slope (the second slope and the first slope are the opposite of each other).
  • the energy recovery circuit under the control of the control circuit, is also used to: after turning on the power tube and conducting the channel through at least one of the plurality of switching devices for a target duration, control multiple At least one of the switching devices is turned on through the freewheeling diode to flow back the remaining energy stored in the energy storage inductor to the input power supply; when the power tube is turned off, at least one of the switching devices is passed through the channel. After being turned on for a target duration, at least one of the plurality of switching devices is controlled to be turned on through the freewheeling diode to flow back the remaining energy stored in the energy storage inductor to the input power supply.
  • the energy recovery circuit specifically includes a first switching device, a second switching device, a third switching device, a fourth switching device and an energy storage inductor; a first end of the first switching device and a second switching device The first end of the first switching device is connected to the input power supply, the third end of the first switching device is connected to the first end of the energy storage inductor, the third end of the second switching device is connected to the second end of the energy storage inductor, and the third end of the energy storage inductor is connected.
  • the two ends are also connected to the gate of the power tube, the first end of the third switching device and the first end of the fourth switching device are connected to ground, the first end of the third switching device is connected to the first end of the energy storage inductor, and the fourth end of the switching device is connected to the ground.
  • the first terminal of the switching device is connected to the second terminal of the energy storage inductor.
  • control circuit is used to control the second switching device and the third switching device to turn on, so that the input power supply charges the energy storage inductor along the first current direction; keep the second switching device turned on and close the third switch device to turn on the power tube; when the gate-source voltage of the power tube is equal to the turn-on voltage of the power tube, the second switching device is turned off and the first switching device is controlled to turn on, and the fourth switching device is controlled to conduct for a target duration through the channel.
  • the energy stored in the energy storage inductor flows back to the input power supply; the control circuit is also used to control the first switching device and the fourth switching device to turn on, so that the input power supply is controlled to charge the energy storage inductor along the second current direction; the fourth switching device is maintained Turn on and off the first switching device to turn off the power tube; when the gate-source voltage of the power tube is equal to the ground potential, turn off the fourth switching device and control the second switching device to turn on, and control the third switching device to conduct the target through the channel time, the energy stored in the energy storage inductor flows back to the input power supply.
  • the first switching device When the gate-source voltage of the power tube is equal to or close to the turn-on voltage of the power tube, the first switching device is controlled to turn on. When the fourth switching device turns on, the fourth switching device - the energy storage inductor - the first switching device form a path to store energy. Some of the energy stored in the inductor flows back to the input supply. When the fourth switching device continues to conduct through the channel for a target length of time, the energy stored in the energy storage inductor flows back to the input power supply. Using this method can not only significantly improve the energy recovery and utilization rate, but also prevent the problem of backflow after the energy storage inductor current crosses zero.
  • the third switching device includes a first freewheeling diode, the anode of the first freewheeling diode is connected to the first end of the third switching device, and the cathode of the first freewheeling diode is connected to the third switching device.
  • the third terminal is connected;
  • the fourth switching device includes a second freewheeling diode, the anode of the second freewheeling diode is connected to the first terminal of the fourth switching device, and the cathode of the second freewheeling diode is connected to the third terminal of the fourth switching device.
  • the control circuit is also used to control the third switching device to turn off the third switching device after conducting for a target length of time through the channel, so that the input power supply, the first switching device, the energy storage inductor, the second freewheeling diode and the ground wire form a path ;
  • the control circuit is also used to control the input power supply, the second switching device, the energy storage inductor, the first freewheeling diode and the ground wire to form a path after the fourth switching device is turned on through the channel for a target length of time.
  • the duration determination circuit includes a first D flip-flop, a second D flip-flop, a third D flip-flop, a comparator, a first AND gate circuit, a second AND gate circuit, and an inverter;
  • the clock input terminal of the first D flip-flop is connected to the second terminal of the second switching device through an inverter, and the second terminal of the first switching device is connected to the second terminal of the second switching device through an inverter.
  • the first D flip-flop is connected to the second terminal of the second switching device through an inverter.
  • the Q non-end of the flip-flop is connected to the second end of the fourth switching device; the input positive end of the comparator is connected to the first end of the energy storage inductor, and the input negative end of the comparator is connected to the second end of the energy storage inductor.
  • the output terminal of the device is connected to the first input terminal of the first AND gate circuit; the clock input terminal of the second D flip-flop is connected to the gate-source voltage signal.
  • the Q terminal of the second D flip-flop is connected to the first input terminal of the first AND gate circuit and the second The first input terminal of the AND gate circuit is connected, the Q non-terminal of the second D flip-flop is connected to the second terminal of the third switching device; the clock input terminal of the third D flip-flop is connected to the output terminal of the first AND gate circuit, The clock Q non-end of the third D flip-flop is connected to the second input end of the second AND gate circuit.
  • the second AND gate circuit is used to output the first control signal and the second control signal; the control circuit is also used to output the first control signal according to the first According to the control signal, the fourth switching device is turned on through the channel for a target duration; according to the second control signal, the third switching device is turned on through the channel for a target duration.
  • this application provides a switching power supply.
  • the switching power supply includes a power tube and a drive circuit provided in the first aspect.
  • the drive circuit is used to conduct or disconnect the loop between the input power supply and the electrical equipment to realize the switching power supply. Function; the drive circuit includes: a control circuit, an energy recovery circuit, a duration determination circuit and an input power supply.
  • the energy recovery circuit includes: multiple switching devices and energy storage inductors; the duration determination circuit is used to determine the target duration; the energy recovery circuit, and The input power supply is electrically connected, and under the control of the control circuit, is used to: charge the energy storage inductor along the first current direction according to the target duration; turn on the power tube; control at least one of the multiple switching devices to conduct the target through the channel time to return the energy stored in the energy storage inductor to the input power supply; charge the energy storage inductor along the second current direction according to the target time; turn off the power tube; control at least one of the multiple switching devices to conduct the target through the channel time to flow the energy stored in the energy storage inductor back to the input power supply.
  • the energy recovery circuit under the control of the control circuit, is also used to: after turning on the power tube and conducting the channel through at least one of the plurality of switching devices for a target duration, control multiple At least one of the switching devices is turned on through the freewheeling diode to flow back the remaining energy stored in the energy storage inductor to the input power supply; when the power tube is turned off, at least one of the switching devices is passed through the channel. After being turned on for a target duration, at least one of the plurality of switching devices is controlled to be turned on through the freewheeling diode to flow back the remaining energy stored in the energy storage inductor to the input power supply.
  • the energy recovery circuit specifically includes: a first switching device, a second switching device, a third switching device, a fourth switching device and an energy storage inductor; the first end of the first switching device and the second The first end of the switching device is connected to the input power supply, the third end of the first switching device is connected to the first end of the energy storage inductor, the third end of the second switching device is connected to the second end of the energy storage inductor, and the energy storage inductor
  • the second end of the third switching device is also connected to the gate of the power tube, the first end of the third switching device is connected to the first end of the fourth switching device, and the first end of the third switching device is connected to the first end of the energy storage inductor.
  • the first terminal of the fourth switching device is connected to the second terminal of the energy storage inductor.
  • the control circuit is used to control the second switching device and the third switching device to turn on, so that the input power supply charges the energy storage inductor along the first current direction; keep the second switching device turned on and turn off the third switching device. switching device to turn on the power tube; when the gate-source voltage of the power tube is equal to the turn-on voltage of the power tube, turn off the second switching device and control the first switching device to turn on, and control the fourth switching device to conduct for a target duration through the channel, Return the energy stored in the energy storage inductor to the input power supply; the control circuit is also used to control the opening of the first switching device and the fourth switching device, so as to control the input power supply to charge the energy storage inductor along the second current direction; close the first switch device to turn off the power tube; when the gate-source voltage of the power tube is equal to the ground potential, the second switching device is controlled to turn on, and the third switching device is controlled to conduct for a target length of time through the channel, and the energy stored in the energy storage inductor
  • the third switching device includes a first freewheeling diode, the anode of the first freewheeling diode is connected to the first end of the third switching device, and the cathode of the first freewheeling diode is connected to the third switching device.
  • the third terminal is connected;
  • the fourth switching device includes a second freewheeling diode, the anode of the second freewheeling diode is connected to the first terminal of the fourth switching device, and the cathode of the second freewheeling diode is connected to the third terminal of the fourth switching device.
  • the control circuit is also used to control the third switching device to turn off the third switching device after conducting for a target length of time through the channel, so that the input power supply, the first switching device, the energy storage inductor, the second freewheeling diode and the ground wire form a path ;
  • the control circuit is also used to control the input power supply, the second switching device, the energy storage inductor, the first freewheeling diode and the ground wire to form a path after the fourth switching device is turned on through the channel for a target length of time.
  • the duration determination circuit includes a first D flip-flop, a second D flip-flop, a third D flip-flop, a comparator, a first AND gate circuit, a second AND gate circuit and an inverter.
  • the clock input end of a D flip-flop is connected to the second end of the second switching device through an inverter
  • the second end of the first switching device is connected to the second end of the second switching device through the inverter
  • the Q non-end of the comparator is connected to the second end of the fourth switching device.
  • the input positive end of the comparator is connected to the first end of the energy storage inductor.
  • the input negative end of the comparator is connected to the second end of the energy storage inductor.
  • the comparator's The output terminal is connected to the first input terminal of the first AND gate circuit, and the clock input terminal of the second D flip-flop is connected to the gate-source voltage signal.
  • the gate-source voltage signal is high when the gate-source voltage of the power tube is equal to the turn-on voltage of the power tube.
  • the gate-source voltage signal is a low-level signal when the gate-source voltage of the power tube is equal to the ground voltage.
  • the Q terminal of the second D flip-flop is connected to the first input terminal of the first AND gate circuit and the second AND gate circuit.
  • the first input terminal is connected, the Q non-terminal of the second D flip-flop is connected to the second terminal of the third switching device, the clock input terminal of the third D flip-flop is connected to the output terminal of the first AND gate circuit, the third D flip-flop is connected The clock Q non-terminal of the device is connected to the second input terminal of the second AND gate circuit.
  • the second AND gate circuit is used to output the first control signal and the second control signal; the control circuit is also used to control the signal according to the first control signal.
  • the fourth switching device is turned on through the channel for a target duration; according to the second control signal, the third switching device is turned on through the channel for a target duration.
  • Figure 1 is a schematic diagram of the loss breakdown of each part of the switching power supply
  • Figure 2A is a schematic structural diagram of a driving loss recovery circuit
  • Figure 2B is a timing diagram of a driving loss recovery circuit
  • Figure 2C is a structural schematic diagram 2 of a driving loss recovery circuit
  • FIG. 3 is a schematic structural diagram of the driving circuit provided by this application.
  • Figure 4 is a schematic structural diagram of an energy recovery circuit
  • Figure 5 is a schematic structural diagram 2 of an energy recovery circuit
  • Figure 6A is a schematic structural diagram of a duration determination circuit
  • Figure 6B is a timing diagram of target duration copying based on the duration determination circuit
  • Figure 6C is a timing diagram of the duration determination circuit
  • Figure 6D is a simulation diagram of the gate-source voltage
  • FIG. 6E is a simulation diagram illustrating the node voltage correspondence between the second switching device and the fourth switching device.
  • connection in the embodiments of this application refers to electrical connection, and the connection between two electrical components may be a direct or indirect connection between two electrical components.
  • a and B can be connected directly, or A and B can be connected indirectly through one or more other electrical components.
  • a and B can be connected, or A and C can be connected directly.
  • C and B are directly connected, and A and B are connected through C.
  • Figure 1 is a schematic diagram of the loss decomposition of each part of the switching power supply. It can be seen from Figure 1 that the driving loss accounts for 2%. When other losses are difficult to reduce, the driving loss needs to be further reduced. Thereby improving the overall efficiency of the switching power supply.
  • FIG. 2A is a structural schematic diagram 1 of a driving loss recovery circuit.
  • Figure 2B is a timing diagram of a driving loss recovery circuit.
  • the driving loss recovery circuit includes switching tubes Q1-Q4 and an inductor L.
  • Each switch tube includes a freewheeling diode, which are freewheeling diodes D1-D4 respectively.
  • the entire driving and energy recovery of the power tube mainly includes the following steps (taking the voltage of the input power supply as Vcc as an example):
  • the first stage of the driving tube opening phase first turn on the switching tubes Q2 and Q3, the switching tubes Q1 and Q4 are in the closed state, and the current passes through the path: input power supply - switching tube Q2 - inductor L - switching tube Q3 - ground. Since the current on the inductor L cannot mutate suddenly, the current through the inductor L rises with a current slope of Vcc/L. After reaching the set time, it enters the second stage of the driver tube turn-on stage from the first stage of the driver tube turn-on stage.
  • the second stage of the driving tube opening phase only switch tube Q2 is turned on, and switch tubes Q1, Q3 and Q4 are all in a closed state.
  • the current passes through the path: input power supply - switching tube Q2 - inductor L - gate terminal of the power tube, thus turning the power tube Turn on, when it is detected that the voltage between the gate and source of the power tube is close to the turn-on voltage of the power tube, the stage 2 of the drive tube turn-on stage enters the stage 3 of the drive tube turn-on stage.
  • the third stage of the driving tube opening phase also known as the energy recovery phase, the switching tube Q1 is turned on, and the switching tubes Q2, Q3 and Q4 are all in a closed state.
  • the current passes through Path: ground wire - freewheeling diode D4 in switch tube Q4 - inductor L - switch tube Q1 - input power supply, the current through the inductor L decreases with a current slope of -Vcc/L, when the current on the inductor decreases to 0 , ends the third stage of the drive tube opening phase, and completes the energy recovery process of opening the drive tube.
  • the power tube closing process is similar to the opening process, including:
  • the first stage of the drive tube closing phase turn on the switching tubes Q1 and Q4, switch tubes Q2 and Q3 are in the closed state, the current passes through the path: input power supply - switching tube Q1 - inductor L - switching tube Q4 - ground wire, due to the inductor L The current cannot change suddenly. The current through the inductor L rises with the current slope of Vcc/L. After reaching the set time, it enters the second stage of the drive tube off stage from the first stage of the drive tube off stage.
  • the second stage of the drive tube shutdown phase only switch tube Q4 is turned on, and switch tubes Q1, Q2, and Q3 are all in a closed state.
  • the current passes through the path: gate end of the power tube - inductor L - switch tube Q4 - ground, thereby connecting the power tube
  • the stage 2 of the driver tube turn-off stage enters the stage 3 of the driver tube turn-off stage.
  • the third stage of the drive tube shutdown phase turn on the switch tube Q2, the switch tubes Q1, Q3 and Q4 are all in the closed state.
  • the current passes through the path: ground wire - switch
  • the inductor L decreases with a current slope of -Vcc/L. When the current slope decreases to 0, the third stage of the drive tube opening phase ends. Complete the energy recovery process of closing the drive tube.
  • the current path is specifically: ground wire - switch tube Q4
  • FIG. 2C is a structural schematic diagram 2 of a driving loss recovery circuit; the structure in Figure 2C adds a zero-crossing detection circuit for zero-crossing detection of the current flowing through the inductor.
  • switching transistor Q3 or switching transistor Q4 is turned on, so that the energy on the inductor L forms a path through the channel of switching transistor Q3 or switching transistor Q4, thereby recirculating the energy.
  • the zero-crossing detection circuit detects that the current flowing through the inductor crosses zero, it is determined that the energy recovery is completed, and the switch Q3 or switch Q4 is turned off.
  • this solution has strict performance requirements for the zero-crossing detection circuit.
  • the switching tube Q3 or switching tube Q4 will turn off later than the zero-crossing timing of the current flowing through the inductor. This will cause the current in the inductor to flow back to the ground after the current in the inductor crosses zero, causing a significant decrease in the energy recovery rate.
  • the internal structure of the zero-crossing detection circuit is relatively complex, making it difficult to achieve ns-level delay. At this time, it will also cause the problem that the switching tube Q3 or the switching tube Q4 turns off later than the zero-crossing timing of the current flowing through the inductor.
  • the ground noise is too large, causing the zero-crossing detection to not work properly, and it is easy to cause The switch tube is accidentally opened or closed by mistake. Therefore, the method of adding a zero-crossing detection circuit is difficult to implement, risky and difficult to apply in practice.
  • the freewheeling diode inside the switching tube is still used for forward conduction, which cannot further improve the energy recovery rate.
  • the drive circuit 300 is used to drive the power tube 301.
  • the drive circuit 300 includes: a control circuit 302, an energy recovery circuit 303, a duration determination circuit 304 and an input power supply 305.
  • the energy recovery circuit 303 includes: a plurality of switching devices and an energy storage inductor.
  • the duration determination circuit 304 is used to determine a target duration.
  • the target duration may be the time required for the input power supply 305 to charge the energy storage inductor. Charging time.
  • the energy recovery circuit 303 under the control of the control circuit 302, is used to: charge the energy storage inductor along the first current direction according to the target duration; turn on the power tube 301; control the multiple switches At least one switching device in the device is turned on for a target duration through a channel to flow back the energy stored in the energy storage inductor to the input power supply 305; the energy storage inductor is charged along the second current direction for the target duration. ; Turn off the power tube 301 ; Control at least one of the plurality of switching devices to conduct through the channel for a target duration to return the energy stored in the energy storage inductor to the input power supply 305 .
  • the plurality of switching devices and the power transistor 301 included in the energy recovery circuit 303 can be metal oxide semiconductor field effect transistor (MOSFET), bipolar junction transistor (BJT), One or more of various types of switching devices such as insulated gate bipolar transistor (IGBT), silicon carbide (SiC) power transistor, etc., which will not be listed one by one in the embodiments of this application.
  • Each switching device may include a first terminal, a second terminal and a third terminal, where the third terminal is used to control the closing or opening of the switch. When the switch is closed, between the first terminal and the second terminal of the switch Can carry current, when the switch is open, no current can be carried between the first and second ends of the switch.
  • the third terminal of the switch is the gate
  • the first terminal of the switch can be the source of the switching device
  • the second terminal can be the drain of the switching device, or the first terminal can be the drain of the switch.
  • the second terminal may be the source of the switch.
  • the difference between the multiple switching devices and the power tube 301 is that the power tube 301 has a larger operating power, so the driving loss is relatively larger.
  • Each of the multiple switching devices included in the energy recovery circuit 303 may include a flyback diode, sometimes also called a flywheel diode or a snubber diode, which is used with inductive loads.
  • the energy storage inductor included in the energy recovery circuit 303 stores energy in a magnetic field.
  • the energy it stores is proportional to its inductance and the square of the current flowing through it.
  • the energy storage inductor is used to recover the gate charge in the power transistor 301 that was originally discharged to the ground, so as to drive the power transistor 301 again in the next cycle to achieve the purpose of reducing driving losses.
  • a plurality of switching devices are selectively connected to both ends of the energy storage inductor, so that the control circuit 302 controls the power tube 301 to turn on and off at different stages, and stores energy through the energy storage inductor.
  • the duration determination circuit 304 in this application is used to determine the target duration, which is the charging duration for the input power supply 305 to charge the energy storage inductor.
  • the duration determination circuit 304 may be a timing circuit, used to calculate the charging duration for the input power supply 305 to charge the energy storage inductor, starting from the time when the energy stored in the energy storage inductor is zero, until the input power supply 305 charges the energy storage inductor. The time it takes for the inductor to be fully charged is the charging time.
  • the duration determination circuit 304 may also be connected to the switching device in the energy recovery circuit 303.
  • the turn-on time (pulse width) of the switching device in the energy recovery circuit 303 can also determine the charging time for the input power supply 305 to charge the energy storage inductor.
  • the input power supply 305 can either charge the energy storage inductor until it cannot store energy and then stop charging.
  • the charging time of this period is the target length, or the input power supply 305 can also store energy within a set time.
  • the set time is the target duration.
  • the duration determination circuit 304 is also required to obtain it. Among them, the longer the charging time of the energy storage inductor is, the more energy the energy storage inductor stores (not exceeding the upper limit), and the faster the power tube 301 is turned on/off.
  • the specific charging time can be freely determined by those skilled in the art, and will not be described in detail here.
  • the energy recovery circuit 303 under the control of the control circuit, is also used to: turn on the power tube and conduct channel conduction through at least one of the plurality of switching devices. After the target duration, at least one switching device among the plurality of switching devices is controlled to be turned on through a freewheeling diode to flow back the remaining energy stored in the energy storage inductor to the input power supply; after turning off the power tube, And after at least one of the plurality of switching devices is turned on through the channel for a target duration, at least one of the plurality of switching devices is controlled to be turned on through the freewheeling diode, so that the energy storage inductor The stored residual energy flows back to the input power source.
  • the recovery of driving energy can be mainly divided into three stages: the energy storage inductor charging stage (the first stage), the power tube opening/closing stage (the second stage), and the energy storage inductor energy recovery stage (the third stage). If you want to further improve the energy recovery rate, in the third stage, the switching device in the energy recovery circuit needs to be turned on through the channel to reduce energy loss. However, it is currently impossible to accurately determine the exact timing of channel closing of the switching device, so in the third stage In the third stage, the freewheeling diode freewheeling conduction method is still used to achieve energy recovery, sacrificing the energy recovery rate. In the first stage, the current on the energy storage inductor will rise with the first slope.
  • the current flowing on the energy storage inductor will also increase with Slopes smaller than the first slope continue to rise.
  • the third stage when the energy stored in the energy storage inductor flows back to the input power supply through the channel, the current on the energy storage inductor will decrease with a second slope (the second slope and the first slope are the opposite of each other). , therefore, based on the principle that the current on the inductor does not suddenly change, after the channel is turned on and the current on the inductor decreases at the second slope for a target period of time, there is still energy in the energy storage inductor that has not been fully recirculated. Therefore, at least one switching device among the plurality of switching devices can continue to conduct through the freewheeling diode to flow back the remaining energy stored in the energy storage inductor to the input power supply.
  • the energy recovery circuit 303 specifically includes: a first switching device 401, a second switching device 402, a third switch Device 403, fourth switching device 404 and energy storage inductor 405; the first end of the first switching device 401 and the first end of the second switching device 402 are connected to the input power supply 305, and the first switch
  • the third end of the device 401 is connected to the first end of the energy storage inductor 405.
  • the third end of the second switching device 402 is connected to the second end of the energy storage inductor 405.
  • the energy storage inductor 405 has The second terminal is also connected to the gate of the power tube 301 , the first terminal of the third switching device 403 and the first terminal of the fourth switching device 404 are grounded, and the first terminal of the third switching device 403 is grounded.
  • the terminal is connected to the first terminal of the energy storage inductor 405, and the first terminal of the fourth switching device 404 is connected to the first terminal of the energy storage inductor 405. The second end of the connection.
  • the control circuit 302 is used to control the second switching device 402 and the third switching device 403 to turn on, so that the input power supply 305 charges the energy storage inductor 405 along the first current direction; keeping the second switching device 402 turns on and off the third switching device 403 to turn on the power tube 301; when the gate-source voltage of the power tube 301 is equal to the turn-on voltage of the power tube 301, turns off the second switching device 402 and controls all
  • the first switching device 401 is turned on, and the fourth switching device 404 is controlled to conduct for a target duration through the channel, and the energy stored in the energy storage inductor 405 is returned to the input power supply 305;
  • the control circuit 302 is also used to control the first switching device 401 and the fourth switching device 404 to turn on, so as to control the input power supply 305 to charge the energy storage inductor 405 along the second current direction; maintain The fourth switching device 404 turns on and off the first switching device 401 to turn off the power tube 301; when the gate-source voltage of the power tube 301 is equal to the ground potential, the fourth switching device 404 turns off and controls the third switching device 404.
  • the second switching device 402 is turned on, and the third switching device 403 is controlled to be turned on through the channel for a target duration to flow back the energy stored in the energy storage inductor 405 to the input power supply 305 .
  • control circuit 302 in the embodiment of the present application can be a processor or a controller, for example, it can be a general central processing unit (CPU), a general processor, a digital signal processing (DSP), Application specific integrated circuits (ASIC), field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • the above-mentioned processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the control circuit 302 is respectively connected to the third terminals of the first switching device 401, the second switching device 402, the third switching device 403 and the fourth switching device 404, thereby controlling the opening and closing of the above switching devices.
  • the control circuit 302 controls the third terminal of the second switching device 402 and the third terminal of the third switching device 403, so that the second switching device 402-the The energy storage inductor 405 and the third switching device 403 form a path, so that the input power supply 305 charges the energy storage inductor 405 .
  • the third terminal of the third switching device 403 is controlled to close the third switching device 403, so that the second switching device - the energy storage inductor 405 - the power
  • the tube 301 forms a passage, and the input power supply 305 is used to turn on the power tube 301 . It should be noted that at this time, the energy storage inductor 405 is still being charged.
  • the first switching device 401 When the gate-source voltage of the power tube 301 is equal to or close to the turn-on voltage of the power tube 301, the first switching device 401 is controlled to be turned on, and the fourth switching device 404 is turned on through the channel.
  • the channel 404 - the energy storage inductor 405 - the first switching device 401 forms a path, and part of the energy stored in the energy storage inductor 405 flows back to the input power supply 305.
  • the channel of the fourth switching device 404 After the fourth switching device 404 continues to be turned on for the target duration, the channel of the fourth switching device 404 is closed, and the freewheeling diode-energy storage inductor 405-the first switching device 401 in the fourth switching device 404 forms a path.
  • the target duration is the charging duration for the input power supply 305 to charge the energy storage inductor when it is not connected to the power tube 301. Since the current of the energy storage inductor 405 cannot change suddenly, the energy storage inductor 405 is charged. The target time period when the energy in the energy inductor 405 is completely recovered must be greater than the target time period. This method can not only significantly improve the energy recovery utilization rate, but also prevent the problem of backflow after the inductor current crosses zero.
  • the control circuit 302 controls the third terminal of the first switching device 401 and the third terminal of the fourth switching device 404 so that the first switching device 401 - the The energy storage inductor 405 and the fourth switching device 404 form a path, so that the input power supply 305 charges the energy storage inductor 405 .
  • the third terminal of the first switching device 401 is controlled to close the first switching device 401, so that the power tube 301 - the energy storage inductor 405 - the fourth
  • the switching device 404 forms a path, and the input power supply 305 is used to turn off the power tube 301 . It should be noted that at this time, the energy storage inductor 405 is still being charged.
  • the second switching device 402 When the gate-source voltage of the power tube 301 is equal to or close to the ground (zero voltage) voltage, the second switching device 402 is controlled to turn on.
  • the third switching device 403 When the third switching device 403 is turned on through the channel, the third switching device 403 is turned on.
  • the channel of 403 - the energy storage inductor 405 - the second switching device 402 forms a path, and part of the energy stored in the energy storage inductor 405 flows back to the input power supply 305.
  • the channel of the third switching device 403 After the third switching device 403 continues to be turned on for the target duration, the channel of the third switching device 403 is closed, and the freewheeling diode-energy storage inductor 405-the second switching device 402 in the third switching device 403 forms a path.
  • Another part of the energy stored in the energy storage inductor 405 flows back to the input power supply 305 .
  • the freewheeling current becomes smaller and the time is very short, the freewheeling loss of the freewheeling diode can be ignored. Since the current of the energy storage inductor 405 cannot change suddenly, the target time period to completely recover the energy in the energy storage inductor 405 must be longer than the target time period.
  • the third switching device 403 includes a first freewheeling diode 501.
  • the anode of the first freewheeling diode 501 is connected to the third The first end of the switching device 403 is connected, and the cathode of the first freewheeling diode 501 is connected to the third end of the third switching device 403;
  • the fourth switching device 404 includes a second freewheeling diode 502, so The anode of the second freewheeling diode 502 is connected to the first end of the fourth switching device 404, and the cathode of the second freewheeling diode 502 is connected to the third end of the fourth switching device 404; controlling the After the third switching device 403 is turned on for the target duration, the input power supply 305, the energy storage inductor 405, the first freewheeling diode 501 and the ground wire form a path; the fourth switching device 404 is controlled to turn on After the third switching device 403 is turned on for the target duration, the input power supply 305, the energy storage induct
  • the duration determination circuit 304 may also be connected to the switching device in the energy recovery circuit 303. Since the input power supply 305 is charged through the switching device in the energy recovery circuit 303, the duration determination circuit 304 What is copied is the pulse width of the switching device in the energy recovery circuit 303, which can also be equal to determining the charging time (target time) for the input power supply 305 to charge the energy storage inductor, as shown in Figure 6A.
  • Figure 6A is A schematic structural diagram of a duration determination circuit. As a possible implementation, the duration determination circuit includes a first D flip-flop 601, a second D flip-flop 602, a third D flip-flop 603, a comparator 604, An AND gate circuit 605, a second AND gate circuit 606 and an inverter 607.
  • the clock input terminal (Clk) of the first D flip-flop 601 is connected to the second terminal of the second switching device 402 through the inverter 607, and the second terminal of the first switching device 401 is connected through the inverter 607.
  • the Q non-terminal of the first D flip-flop 601 is connected to the second terminal of the fourth switching device 404 .
  • the positive input terminal of the comparator 604 is connected to the first terminal of the energy storage inductor 405, and the negative input terminal of the comparator 604 is connected to the second terminal of the energy storage inductor 405.
  • the output terminal is connected to the first input terminal of the first AND gate circuit 605 .
  • the clock input terminal (Clk) of the second D flip-flop 602 is connected to a gate-source voltage signal.
  • the gate-source voltage signal is high level when the gate-source voltage of the power tube 301 is equal to the voltage of the input power supply 305 signal, the gate-source voltage signal is a low-level signal when the gate-source voltage of the power transistor 301 is equal to the ground voltage, the Q terminal of the second D flip-flop 602 and the first AND gate circuit 605
  • the first input terminal is connected to the first input terminal of the second AND gate circuit 606, and the Q NOT terminal of the second D flip-flop 602 is connected to the second terminal of the third switching device 403;
  • the third The clock input terminal of the D flip-flop 603 is connected to the output terminal of the first AND gate circuit 605, and the clock Q NOT terminal of the third D flip-flop 603 is connected to the second input terminal of the second AND gate circuit 606.
  • the second AND gate circuit 606 is used to output the first control signal and the second control signal.
  • the control circuit 302 is configured to turn on the fourth switching device 404 for the target duration according to the first control signal; to turn on the third switching device 403 for the target according to the second control signal. duration.
  • FIG. 6B is a timing diagram of copying the target duration based on the duration determination circuit.
  • the control pulse width of the first switching device 401 and the second switching device 402 determines the charging time of the energy storage inductor 405.
  • the time length determination circuit 304 is copied to obtain the turn-on time of the first switching device 401.
  • the corresponding first control signal corresponds to the second control signal corresponding to the turn-on time of the second switching device 402 . Since the current of the energy storage inductor 405 cannot change suddenly, the target time period to completely recover the energy in the energy storage inductor 405 must be longer than the target time period.
  • the remaining energy on the energy storage inductor 405 can flow through the freewheeling diode for freewheeling. Since the freewheeling current becomes smaller and the time is very short, the freewheeling loss of the freewheeling diode can be ignored, which can significantly improve the energy recovery and utilization rate. , and can also prevent the problem of backflow after the inductor current crosses zero.
  • the pulse input (PULSE_IN) signal is a copied pulse signal that turns on the second switching device 402.
  • the gate-source voltage of the power tube 301 is equal to the voltage of the input power supply 305
  • the gate-source voltage is equal to the voltage of the input power supply 305.
  • the voltage signal is a high-level signal, which triggers the copying action.
  • the gate-source voltage of the power transistor 301 is equal to the ground voltage
  • the gate-source voltage signal is a low-level signal, and the copying action ends.
  • RSTN is a reset signal, used to reset the triggering states of the first D flip-flop 601, the second D flip-flop 602, and the third D flip-flop 603.
  • V 1 is the input negative terminal signal of the comparator 604
  • V 2 is the input positive terminal signal of the comparator 604
  • V out is the output terminal signal of the comparator 604 .
  • q 1 is the first input signal of the second AND gate circuit 606
  • q 2 is the second input signal of the second AND gate circuit 606
  • the pulse output (PULSE_OUT) is corresponding to the turn-on time of the second switching device 402 the second control signal.
  • the above circuit has a simple structure. There is only a comparator in the delay link, which enables ns-level delay settings. It replaces the existing zero-crossing detection circuit to directly control the turn-off of the switching device. Noise has little impact on the above circuit. , it can still work normally even when the ground noise is very serious.
  • FIG. 6D is a simulation diagram of the gate-source voltage. It can be seen from Figure 6D that when the power tube 301 is turned on in this application, the gate-source voltage of the power tube 301 is smaller than the gate-source voltage of the power tube 301 in the prior art. This is equivalent to that when the power tube 301 is turned on in this application, The gate-source voltage of the power tube 301 is closer to the voltage of the input power supply 305.
  • FIG. 6E shows the second switching device and the fourth switching device. Simulation diagram corresponding to the node voltage between components. It can be seen from Figure 6E that after the power transistor 301 is turned on, the node voltage between the second switching device and the fourth switching device in the present application is higher than that between the second switching device and the fourth switching device in the prior art.
  • the node voltage between the second switching device and the fourth switching device is lower than the node voltage between the second switching device and the fourth switching device in the prior art. Therefore, the freewheeling loss in the energy recovery stage is significantly improved. Compared with the existing technology, it has extremely strong anti-interference ability under the premise of low power consumption and low complexity.
  • the switching power supply includes a power tube and a driving circuit as shown in Figure 3 to Figure 6A.
  • the driving circuit enables the loop between the input power supply and the electrical equipment to be connected or Disconnected to realize the function of switching power supply;
  • the drive circuit includes: a control circuit, an energy recovery circuit, a duration determination circuit and an input power supply;
  • the energy recovery circuit includes: a plurality of switching devices and an energy storage inductor; the duration The determination circuit is used to determine the target duration; the energy recovery circuit is electrically connected to the input power supply, and under the control of the control circuit, is used to: store energy along the first current direction according to the target duration.
  • the target duration charges the energy storage inductor along the second current direction; turns off the power tube; and controls at least one of the plurality of switching devices to conduct through the channel for the target duration to store the energy storage inductor. The energy flows back to the input power source.
  • the energy recovery circuit under the control of the control circuit, is also used to: turn on the power tube and pass the channel through at least one switching device among the plurality of switching devices. After the channel is turned on for a target duration, at least one of the plurality of switching devices is controlled to be turned on through a freewheeling diode to flow back the remaining energy stored in the energy storage inductor to the input power supply; after turning off the power tube, and after at least one of the plurality of switching devices is turned on through the channel for a target length of time, at least one of the plurality of switching devices is controlled to be turned on through a freewheeling diode to turn on the storage device. The remaining energy stored in the inductor flows back to the input power supply.
  • the energy recovery circuit specifically includes: a first switching device, a second switching device, a third switching device, a fourth switching device and an energy storage inductor; the third switching device of the first switching device One end and the first end of the second switching device are connected to the input power supply, the third end of the first switching device is connected to the first end of the energy storage inductor, and the third end of the second switching device is connected to the input power supply. Three terminals are connected to the second terminal of the energy storage inductor, the second terminal of the energy storage inductor is also connected to the gate of the power tube, and the first terminal of the third switching device is connected to the fourth switch. The first end of the device is connected to ground, the first end of the third switching device is connected to the first end of the energy storage inductor, and the first end of the fourth switching device is connected to the second end of the energy storage inductor. .
  • the control circuit is used to control the second switching device and the third switching device to turn on, so that the input power supply charges the energy storage inductor along the first current direction. ; Keep the second switching device turned on and turn off the third switching device to turn on the power tube; when the gate-source voltage of the power tube is equal to the turn-on voltage of the power tube, turn off the second switching device and control all The first switching device is turned on, and the fourth switching device is controlled to conduct for a target duration through the channel, and the energy stored in the energy storage inductor is returned to the input power supply; the control circuit is also used to control the The first switching device and the fourth switching device are turned on to control the input power supply to charge the energy storage inductor along the second current direction; the first switching device is turned off to turn off the power tube; When the gate-source voltage of the power tube is equal to the ground potential, the second switching device is controlled to turn on, and the third switching device is controlled to conduct for a target duration through the channel, so that the energy stored in the energy storage in
  • the third switching device includes a first freewheeling diode, the anode of the first freewheeling diode is connected to the first end of the third switching device, and the first freewheeling diode The cathode of the current diode is connected to the third terminal of the third switching device;
  • the fourth switching device includes a second freewheeling diode, and the anode of the second freewheeling diode is connected to the first terminal of the fourth switching device. terminal is connected, and the cathode of the second freewheeling diode is connected to the third terminal of the fourth switching device;
  • the control circuit is also used to control the third switching device to turn off the third switching device through the channel for a target duration, so that the input power supply, the first switching device, and the energy storage device
  • the inductor, the second freewheeling diode and the ground wire form a path; the control circuit is also used to control the input power supply, the second switching device after the fourth switching device conducts through the channel for a target length of time.
  • the energy storage inductor, the first freewheeling diode and the ground wire form a path.
  • the duration determination circuit includes a first D flip-flop, a second D flip-flop, a third D flip-flop, a comparator, a first AND gate circuit, a second AND gate circuit, and an inverter. phase inverter; the clock input terminal of the first D flip-flop is connected to the second terminal of the second switching device through the inverter, and the second terminal of the first switching device is connected to the second terminal through the inverter. The second end of the second switching device is connected, the Q non-end of the first D flip-flop is connected to the second end of the fourth switching device; the input positive end of the comparator is connected to the energy storage inductor.
  • the first end of the comparator is connected to the first end of the comparator, the negative input end of the comparator is connected to the second end of the energy storage inductor, and the output end of the comparator is connected to the first input end of the first AND gate circuit;
  • the clock input terminal and gate-source voltage signal of the second D flip-flop connection the gate-source voltage signal is a high-level signal when the gate-source voltage of the power tube is equal to the turn-on voltage of the power tube, and the gate-source voltage signal is a high-level signal when the gate-source voltage of the power tube is equal to the ground voltage.
  • the Q terminal of the second D flip-flop is connected to the first input terminal of the first AND gate circuit and the first input terminal of the second AND gate circuit, and the second D flip-flop
  • the Q non-end of the flip-flop is connected to the second end of the third switching device; the clock input end of the third D flip-flop is connected to the output end of the first AND gate circuit, and the third D flip-flop
  • the non-end of the clock Q is connected to the second input end of the second AND gate circuit.
  • the second AND gate circuit is used to output the first control signal and the second control signal; the control circuit is also used to output the first control signal and the second control signal according to the second AND gate circuit.
  • the fourth switching device is turned on through the channel for a target duration; according to the second control signal, the third switching device is turned on through the channel for a target duration.

Landscapes

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

Abstract

La présente demande concerne un circuit d'attaque et une alimentation à découpage. Le circuit d'attaque comprend un circuit de commande, un circuit de récupération d'énergie, un circuit de détermination de durée et une alimentation électrique d'entrée. Le circuit de récupération d'énergie comprend un dispositif de commutation et un inducteur de stockage d'énergie. Le circuit de détermination de durée est conçu pour déterminer une durée cible. Le circuit de récupération d'énergie est électriquement connecté à l'alimentation électrique d'entrée, et est conçu, sous la commande du circuit de commande, pour charger l'inducteur de stockage d'énergie dans une première direction de courant/seconde direction de courant selon la durée cible ; pour allumer/éteindre un tube d'alimentation ; et pour commander au moins un dispositif de commutation à allumer pendant la durée cible au moyen d'un canal de sorte à permettre à l'énergie de revenir à l'alimentation électrique d'entrée. Selon la présente demande, la durée cible pour laquelle l'alimentation électrique d'entrée charge l'inducteur de stockage d'énergie est déterminée, et à un étage de récupération d'énergie, le dispositif de commutation est allumé pendant la durée cible au moyen du canal, de sorte que l'énergie stockée sur l'inducteur de stockage d'énergie revient à l'alimentation électrique d'entrée au moyen du canal. De cette manière, l'énergie sur l'inducteur de stockage d'énergie peut revenir directement à l'alimentation électrique d'entrée au moyen du canal du dispositif de commutation, sans provoquer de perte d'énergie, de sorte que le taux de récupération d'énergie peut être considérablement amélioré.
PCT/CN2023/104086 2022-07-20 2023-06-29 Circuit d'attaque et alimentation à découpage WO2024016997A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210863964.3A CN117477912A (zh) 2022-07-20 2022-07-20 一种驱动电路及开关电源
CN202210863964.3 2022-07-20

Publications (1)

Publication Number Publication Date
WO2024016997A1 true WO2024016997A1 (fr) 2024-01-25

Family

ID=89617005

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/104086 WO2024016997A1 (fr) 2022-07-20 2023-06-29 Circuit d'attaque et alimentation à découpage

Country Status (2)

Country Link
CN (1) CN117477912A (fr)
WO (1) WO2024016997A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1052061A (ja) * 1996-07-29 1998-02-20 Murata Mfg Co Ltd 共振ドライブ回路
CN109698612A (zh) * 2019-02-19 2019-04-30 东南大学 一种适用于高频应用的谐振门极驱动电路
CN109980903A (zh) * 2017-12-28 2019-07-05 中兴通讯股份有限公司 一种驱动电路和电源
CN111884491A (zh) * 2020-06-23 2020-11-03 华为技术有限公司 一种具有能量回收功能的驱动电路及开关电源
CN114025284A (zh) * 2020-07-19 2022-02-08 知微电子有限公司 具有回收能量能力的驱动电路
CN115133752A (zh) * 2021-03-25 2022-09-30 台达电子企业管理（上海）有限公司 驱动装置及其控制方法
CN115313803A (zh) * 2022-08-22 2022-11-08 天津大学 一种谐振无损驱动电路结构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1052061A (ja) * 1996-07-29 1998-02-20 Murata Mfg Co Ltd 共振ドライブ回路
CN109980903A (zh) * 2017-12-28 2019-07-05 中兴通讯股份有限公司 一种驱动电路和电源
CN109698612A (zh) * 2019-02-19 2019-04-30 东南大学 一种适用于高频应用的谐振门极驱动电路
CN111884491A (zh) * 2020-06-23 2020-11-03 华为技术有限公司 一种具有能量回收功能的驱动电路及开关电源
CN114025284A (zh) * 2020-07-19 2022-02-08 知微电子有限公司 具有回收能量能力的驱动电路
CN115133752A (zh) * 2021-03-25 2022-09-30 台达电子企业管理（上海）有限公司 驱动装置及其控制方法
CN115313803A (zh) * 2022-08-22 2022-11-08 天津大学 一种谐振无损驱动电路结构

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
XIAOJUN GUO, JIE ZHANG, QINGHUA LIN, WEIMING LIN: "Novel Resonant Driving Circuit for Low-voltage Synchronous Rectifier", JOURNAL OF POWER SUPPLY, vol. 21, no. 2, 28 July 2021 (2021-07-28), pages 12 - 20, XP093130493 *

Also Published As

Publication number Publication date
CN117477912A (zh) 2024-01-30

Similar Documents

Publication Publication Date Title
US7285876B1 (en) Regenerative gate drive circuit for power MOSFET
CN109375087B (zh) 一种具有高速检测igbt短路故障的保护电路与方法
WO2013117091A1 (fr) Circuit de correction de facteur de puissance sans pont et son procédé de commande
JP2007505544A (ja) 半導体スイッチの高周波制御
WO2020228468A1 (fr) Circuit d'attaque de grille pour abaisser le courant de récupération inverse d'un dispositif d'alimentation
JP2004215458A (ja) 半導体スイッチング素子の駆動回路
CN110165872A (zh) 一种开关控制电路及其控制方法
JPH0947015A (ja) 自己消弧形半導体素子の駆動回路
CN208656639U (zh) 用于开关变换器的控制电路及开关变换器
CN108390549B (zh) 一种减小死区时间的栅驱动电路
US11095284B2 (en) Minimizing ringing in wide band gap semiconductor devices
US7248093B2 (en) Bipolar bootstrap top switch gate drive for half-bridge semiconductor power topologies
CN216929868U (zh) 输入防冲击mos管保护电路
CN213402826U (zh) 一种复合功率开关及开关电源
WO2017148121A1 (fr) Module d'alimentation intelligent et climatiseur
WO2024016997A1 (fr) Circuit d'attaque et alimentation à découpage
WO2020211713A1 (fr) Circuit de commande, circuit de source de tension, dispositif d'attaque, et procédé de commande
CN116827095A (zh) 一种SiC MOSFET驱动电路及驱动方法
US20230040189A1 (en) A driver circuit, corresponding device and method of operation
CN116582019A (zh) 一种变频控制电路及半导体设备
WO2023061149A1 (fr) Circuit d'attaque de redresseur commandé au silicium, circuit d'application d'attaque de redresseur commandé au silicium et dispositif électrique/électrique
CN114337201B (zh) 一种抑制SiC MOSFET尖峰及串扰的驱动电路
JP2001025259A (ja) Ｐｗｍインバーター装置
WO2023087268A1 (fr) Circuit d'alimentation électrique de commutation et dispositif électronique
WO2022236799A1 (fr) Module régulateur de tension et puce intégrée

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23842062

Country of ref document: EP

Kind code of ref document: A1