CN111431395A - Switch ringing suppression circuit based on gate driver and control method thereof - Google Patents
Switch ringing suppression circuit based on gate driver and control method thereof Download PDFInfo
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- CN111431395A CN111431395A CN202010172966.9A CN202010172966A CN111431395A CN 111431395 A CN111431395 A CN 111431395A CN 202010172966 A CN202010172966 A CN 202010172966A CN 111431395 A CN111431395 A CN 111431395A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- 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
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
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- 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
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- 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
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- 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
- H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
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- Analogue/Digital Conversion (AREA)
- Electronic Switches (AREA)
Abstract
A switch ringing suppression circuit based on a gate driver and a control method thereof belong to the field of power electronic devices and control. The drive circuit comprises a programmable digital voltage source and a current expansion circuit, and the main control unit comprises a data detector, a drive waveform generator and a power switch controller. The output signal of the driving waveform generator in the main control unit is transmitted to the programmable digital voltage source, the output signal of the power switch controller is transmitted to the current expanding circuit, and the data detector receives and processes the data sent by the sampling circuit. The sampling circuit measures the current flowing through the tested power switch tube and is connected with the collector/drain electrode of the tested power switch tube. The ringing phenomenon of the power switch tube is inhibited by adjusting the driving waveform, and the voltage value of the ringing inhibition is adjusted only by a program for different types of power switch tubes or different load conditions; the invention suppresses ringing without changing the structure of the converter, and improves the reliability of the converter.
Description
Technical Field
The invention relates to a switch ringing suppression circuit based on a gate driver and a control method thereof, belonging to the field of power electronic devices and control.
Background
The dominant one in power electronic converters is a voltage-type converter, which is characterized in that the polarity of voltage on a direct current side is unchanged and current is conducted in two directions. The voltage type converter usually adopts an asymmetric turn-off power device and a diode with the same capacity to form a switch valve of the converter in an anti-parallel connection mode, the ringing phenomenon occurs when the switch valve is conducted due to the reverse recovery characteristic of the diode and parasitic parameters in a converter circuit, the electromagnetic interference problem is generated, high-speed signals in equipment are influenced, and the reliability of the power device and the converter is seriously reduced.
The ringing phenomenon is essentially ringing, and although many techniques have been developed at the hardware level to reduce this ringing phenomenon, such as parallel connection of R L C snubber circuits, reduction of bus parasitic inductance, concatenation of large resistors in the drive circuit, etc., too large a capacitance of the R L C snubber circuit causes heating of the power device, thermal breakdown, and too small a capacitance with insufficient absorption capability for ringing.
Disclosure of Invention
The invention provides a ringing suppression circuit based on a gate driver and a control method thereof, which can suppress ringing phenomenon without changing the structure of a converter so as to improve the reliability of the converter.
The technical scheme adopted by the invention is as follows:
a gate driver based switch ringing suppression circuit, the main circuit of which comprises: driving deviceThe circuit comprises a circuit 1, a sampling circuit 2 and a main control unit 3, wherein the driving circuit 1 comprises a programmable digital voltage source 4 and a current expanding circuit 5, and the main control unit 3 comprises a data detector 6, a driving waveform generator 7 and a power switch controller 8. The driving waveform generator 7 in the main control unit 3 outputs signals to the programmable digital voltage source 4 in the driving circuit 1, the power switch controller 8 outputs signals to the current expanding circuit 5 in the driving circuit 1, and the data detector 6 receives and processes the data sent by the sampling circuit 2. The programmable digital voltage source 4 and the negative power supply V in the driving circuit 1EEThe current expanding circuit 5 is connected to supply power to the current expanding circuit, and the driving waveform output by the driving circuit 1 passes through the driving resistor RgAnd then controlling the power switch tube to be tested. The sampling circuit 2 measures the current i flowing through the tested power switch tubeCConnected to its collector/drain.
The programmable digital voltage source 4 is mainly composed of a positive power supply UiNegative power supply VEEEnergy storage capacitor C, resistor R and triode Q0And a switching tube Q1And Q2And a controllable precision voltage regulator D1And D2The power switch tube mainly has the functions of adjusting driving voltage and inhibiting ringing in the switching-on process of the power switch tube. The positive power supply UiAnd a negative power supply VEEFor the power supply of the drive circuit 1, a positive power supply UiThe anode is connected with a triode Q0Positive power supply UiThe negative electrode is connected with the ground wire, the energy storage capacitor C and the positive power supply UiAnd the upper end of the energy storage capacitor C is connected with the positive electrode of the power supply in parallel, and the lower end of the energy storage capacitor C is connected with the negative electrode of the power supply. The switch tube Q1And Q2Respectively connected with a controllable precise voltage-stabilizing source D1And D2Is connected with a controllable precise voltage-stabilizing source D1And D2The anode of the switch tube Q is grounded1And Q2The collector of which is connected with a triode Q0A gate electrode of (2). The left end of the resistor R is connected with a triode Q0The collector and the right end are connected with a triode Q0A gate electrode. The triode Q0The voltage between the emitter and the ground is the output voltage UO. The circuit of the programmable digital voltage source 4 is connected in series between the input direct-current voltage and the loadA triode Q0When inputting a positive power supply UiOr the variation of the load resistance causes the output voltage UOWhen changed, UOWill be reflected in the transistor Q0On the emitter junction voltage of the transistor, the conduction voltage of the transistor is changed, thereby adjusting UOTo keep the output voltage substantially stable. Any switch tube Q1Or Q2And when the voltage is switched on, the output voltage is the voltage value of the corresponding controllable precise voltage-stabilizing source. The voltage at the two ends of the resistor R is equal to the input positive power supply UiAnd an output voltage UOThe difference between them. The regulated voltage value of the controllable precise regulated power supply is smaller than that of the input positive power supply UiI.e. the output voltage UOLess than positive power supply UiA voltage.
The current expanding circuit 5 comprises a Schmitt trigger T1An NPN transistor and a PNP transistor. The current amplification circuit 5 functions to convert digital signals (low level 0V, high level 3.3V) into ac square waves (negative voltage-15V, positive voltage +15V), and amplify the driving capability. The response speed of the Schmitt trigger, the NPN triode and the PNP triode to the input signal is higher than the switching speed of the controlled power switching tube. The base electrodes of the NPN triode and the PNP triode are connected with the output end of the Schmidt trigger T1; the collector of the NPN triode is connected with the triode Q0And the collector of the PNP triode is connected with a negative power supply VEE(ii) a The emitter electrodes of the NPN triode and the PNP triode are connected with a driving resistor RgThe left end of (a). Drive resistor RgThe right end of the power switch tube is connected with the base electrode/gate electrode of the power switch tube to be tested. The main control unit 3 outputs a plurality of paths of control signals to respectively control Q1、Q2NPN and PNP switch on and off, and controllable precision voltage regulator D1And D2The clamping voltage value of (2) is realized by circuit implementation or programming according to requirements.
The sampling circuit 2 utilizes a sampling chip to measure the current i of the power switch tubeCSampling in real time, completing analog/digital conversion, converting the analog/digital conversion into a digital signal which can be received by a control chip, and communicating with the main control unit 3 through parallel port data communication. The sampling interval of the sampling chip cannot be higher than the rise time of the current (from 10% of the load current to 90% of the load current)And half.
The data detector 6 is configured to start working when the output signal of the power switch controller 8 jumps from low level to high level, communicate with the sampling circuit 2 and collect the current i flowing through the power switch tubeC。
The driving waveform generator 7 is configured to trigger when the current data collected by the data detector 6 reaches a set value, and output a serial signal to control the programmable digital voltage source 4.
The power switch controller 8 generates a PWM driving waveform, which is amplified by the current expanding circuit 5 of the driving circuit 1 to provide a driving signal for the power switch tube in the converter.
A control method of a switch ringing suppression circuit based on a gate driver comprises the following steps:
the method comprises the following steps: setting an initial controllable precision voltage-stabilizing source D1And D2The value of the voltage.
Step two: the power switch controller 8 outputs low level, the drive waveform generator 7 outputs two paths of serial signals to control the controllable precise voltage-stabilizing source D1And D2The set voltage values are respectively clamped.
Step three: the power switch controller 8 outputs high level to start the power switch tube to be tested and the data detector 6, and simultaneously the switch tube Q of the digital voltage source 4 can be programmed1On, Q2And (6) turning off.
Step four: when the data detector 6 detects that the current value collected by the ADC sampling circuit 2 reaches the load current, the switching tube Q of the programmable digital voltage source 42On, Q1And (6) turning off.
Step five: when the data detector 6 detects that the current value acquired by the ADC sampling circuit 2 reaches a first peak value, the switching tube Q of the programmable digital voltage source 41On, Q2And (6) turning off.
Step six: judging the current i flowing through the power switch tube by using a data detector 6CWhether or not ringing is present. If present, reducing the controllable precision voltage-stabilizing source D2The set voltage value of (3); if not, maintaining a controllable precision voltage regulator D2The set voltage value of (2).
Step seven: and repeating the second step to the sixth step for the next switching period of the switching tube to be tested.
The invention has the beneficial effects that: the ringing phenomenon of the power switch tube is suppressed by adjusting the driving waveform. For different models of power switching tubes or different load conditions, the voltage value of the ringing suppression is adjusted only by a program. The invention reduces the cost of the converter, does not need to design reasonable converter circuit layout and absorption circuits according to different devices, and simultaneously avoids the extra power loss generated by parallel absorption circuits.
Drawings
FIG. 1 is a block diagram of the switch ringing suppression circuit of the present invention;
FIG. 2 is a schematic diagram of a driving circuit of the present invention;
FIG. 3 is a schematic diagram of the output drive waveform derived based on the current signal according to the present invention; FIG. 3(a) is a waveform i of a current flowing through a power switch tube under testCFIG. 3(b) is a schematic diagram showing the output driving voltage v of the switch ringing suppression circuitgA timing diagram;
FIG. 4 is a flow chart of a switch ringing suppression control method of the present invention;
FIG. 5 is a graph of current waveforms before and after ringing suppression in an embodiment of the present invention;
in the figure: 1 a drive circuit; 2, a sampling circuit; 3, a main control unit; 4 programmable digital voltage source; 5a current expanding circuit; 6 a data detector; 7 driving a waveform generator; 8 power switch controller.
Detailed description of the invention
The following describes the method of carrying out the present invention in detail with reference to the accompanying drawings.
Fig. 1 is a block diagram of a switch ringing suppression circuit of the present invention. Fig. 2 is a schematic diagram of a driving circuit of the present invention. Fig. 3 is a schematic diagram of an output driving waveform obtained based on a current signal according to the present invention. Fig. 4 is a flow chart of a switch ringing suppression control method of the present invention. Fig. 5 is a diagram of current waveforms before and after ringing suppression in an embodiment of the present invention.
The block diagram of the switch ringing suppression circuit in fig. 1 includes a driving circuit 1, an ADC sampling circuit 2 and a main control unit 3, where the driving circuit 1 includes a programmable digital voltage source 4 and an amplifying circuit 5, and the main control unit 3 includes a data detector 6, a driving waveform generator 7 and a power switch controller 8.
The driving waveform generator 7 in the main control unit 3 outputs signals to the programmable digital voltage source 4 in the driving circuit 1, the power switch controller 8 outputs signals to the current expanding circuit 5 in the driving circuit 1, and the data detector 6 receives and processes the data sent by the sampling circuit 2. Programmable digital voltage source 4 and negative power supply V in drive circuit 1EEThe current expanding circuit 5 is connected to supply power to the current expanding circuit, and the driving waveform output by the driving circuit 1 passes through the driving resistor RgAnd then controlling the power switch tube to be tested. The sampling circuit 2 measures the current i flowing through the tested power switch tubeCConnected to its collector/drain.
In the schematic diagram of the driving circuit of fig. 2, the positive power supply UiAnd a negative power supply VEEFor the power supply of the drive circuit 1, a positive power supply UiThe anode is connected with a triode Q0Positive power supply UiThe negative electrode is connected with the ground wire, the energy storage capacitor C and the input power supply UiAnd the upper end of the energy storage capacitor C is connected with the positive electrode of the power supply in parallel, and the lower end of the energy storage capacitor C is connected with the negative electrode of the power supply. Switch tube Q1And Q2Respectively connected with a controllable precise voltage-stabilizing source D1And D2Is connected with a controllable precise voltage-stabilizing source D1And D2The anode of the switch tube Q is grounded1And Q2The collector of which is connected with a triode Q0A gate electrode of (2). The left end of the resistor R is connected with a triode Q0The right end of the collector and the resistor is connected with a triode Q0A gate electrode. Triode Q0The voltage between the emitter and the ground is the output voltage UO. The base electrodes of the NPN triode and the PNP triode are connected with the output end of the Schmidt trigger T1; the collector of the NPN triode is connected with the triode Q0And the collector of the PNP triode is connected with a negative power supply VEE(ii) a The emitter electrodes of the NPN triode and the PNP triode are connected with a driving resistor RgThe left end of (a). Drive resistor RgThe right end of the power switch tube is connected with the base electrode/gate electrode of the power switch tube to be tested. The main control unit 3 outputs a plurality of paths of control signals to respectively control Q1、Q2NPN and PNP switch on and off, and controllable precision voltage regulator D1And D2The clamping voltage value of (2) can be realized by a circuit or programming according to requirements.
FIG. 3 is a schematic diagram of the output waveform of the switch ringing suppression circuit of the present invention, at t0Output voltage v of switch ringing suppression circuit at momentgFrom VEEConverting to a positive voltage; at t1At the moment i.e. the current i flowing through the power switchCTo a load current ILWhen the voltage value output by the circuit changes; at t2At the moment i.e. the current i flowing through the power switchCTo a maximum value of current IPWhen the voltage value output by the circuit is recovered to t0To t1The voltage between them.
Fig. 4 is a control method of the present invention, including the steps of:
the method comprises the following steps: setting an initial controllable precision voltage-stabilizing source D1And D2The voltage values are all 15V.
Step two: the power switch controller 8 outputs low level and the drive circuit 1 outputs VEEThe drive waveform generator 7 outputs two paths of serial signals to control the controllable precise voltage-stabilizing source D1And D2The set voltage values are respectively clamped.
Step three: the power switch controller 8 is at t0Constantly outputting high level to start the tested power switch tube and the data detector 6, and simultaneously programming the switch tube Q of the digital voltage source 41On, Q2And (6) turning off. At this stage, a large voltage needs to be supplied to the gate of the power switch tube, so that the input capacitor is charged quickly.
Step four: at t1The time data detector 6 detects that the current value collected by the sampling circuit 2 reaches the load current ILTime programmable digital voltage source 4 switch tube Q2On, Q1And (6) turning off. The charging speed of the gate current needs to be reduced at this stage.
Step five: at t2When the time data detector 6 detects that the current value acquired by the sampling circuit 2 reaches a first peak value, the switching tube Q of the programmable digital voltage source 41On, Q2And (6) turning off. And at the stage, the gate pole of the power switch tube recovers large voltage and continues to rapidly charge the input capacitor.
Step six: judging the current i flowing through the power switch tube by using a data detector 6CWhether or not ringing is present. If present, a controllable precision voltage regulator D2The set voltage value of (1) is reduced by 1V; if not, maintaining a controllable precision voltage regulator D2The set voltage value of (2).
Step seven: and repeating the second step to the sixth step for the next switching period of the switching tube to be tested.
FIG. 5 shows the current i for the first and tenth switching cyclesCAs can be seen, in the first switching cycle (shown in dashed lines in fig. 5), the maximum amplitude of ringing is 22.5A; after ten switching cycles (shown in dashed lines in fig. 5), the ringing disappears.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (4)
1. A switch ringing suppression circuit based on a gate driver is characterized in that a main circuit of the switch ringing suppression circuit comprises a driving circuit (1), a sampling circuit (2) and a main control unit (3), wherein the driving circuit (1) comprises a programmable digital voltage source (4) and a current expansion circuit (5), and the main control unit (3) comprises a data detector (6), a driving waveform generator (7) and a power switch controller (8); the driving waveform generator (7) outputs signals to the programmable digital voltage source (4), the power switch controller (8) outputs signals to the current expanding circuit (5), and the data detector (6) receives and processes data sent by the sampling circuit (2); the programmable digital voltage source (4) and the negative power supply VEEThe current expanding circuit (5) is connected to supply power to the current expanding circuit; the sampling circuit (2) measures the current flowing through the tested power switch tube and is connected with the collector/drain electrode thereof；
The programmable digital voltage source (4) is mainly composed of a positive power supply UiNegative power supply VEEEnergy storage capacitor C, resistor R and triode Q0And a switching tube Q1And Q2And a controllable precision voltage regulator D1And D2The power switch tube is used for adjusting the driving voltage in the switching-on process of the power switch tube and inhibiting the generation of ringing; the positive power supply UiAnd a negative power supply VEEFor the power supply of the driver circuit (1), a positive power supply UiThe anode is connected with a triode Q0Positive power supply UiThe negative electrode is connected with the ground wire, the energy storage capacitor C and the positive power supply UiThe upper end of the energy storage capacitor C is connected with the positive electrode of the power supply, and the lower end of the energy storage capacitor C is connected with the negative electrode of the power supply; the switch tube Q1And Q2Respectively connected with a controllable precise voltage-stabilizing source D1And D2Is connected with a controllable precise voltage-stabilizing source D1And D2The anode of the switch tube Q is grounded1And Q2The collector of which is connected with a triode Q0A gate electrode of (a); the left end of the resistor R is connected with a triode Q0The collector and the right end are connected with a triode Q0A gate electrode; the triode Q0The voltage between the emitter and the ground is the output voltage UO(ii) a The circuit of the programmable digital voltage source (4) is that a triode Q is connected in series between an input direct current voltage and a load0When inputting a positive power supply UiOr the variation of the load resistance causes the output voltage UOWhen changed, UOWill be reflected in the transistor Q0On the emitter junction voltage of the transistor, the conduction voltage of the transistor is changed, thereby adjusting UOTo maintain a substantially stable output voltage; any switch tube Q1Or Q2The power is switched on, and the output voltage is the voltage value of a corresponding controllable precise voltage-stabilizing source; the voltage at the two ends of the resistor R is equal to the input positive power supply UiAnd an output voltage UOThe difference between the two; the regulated voltage value of the controllable precise regulated power supply is smaller than that of the input positive power supply UiI.e. the output voltage UOLess than positive power supply UiA voltage;
the current expanding circuit (5) comprises a Schmitt trigger T1An NPN triode and a PNP triode; flow expansionThe circuit (5) is used for converting a digital signal into an alternating-current square wave and amplifying the driving capability; the base electrodes of the NPN triode and the PNP triode are connected with the output end of the Schmidt trigger T1; the collector of the NPN triode is connected with the triode Q0And the collector of the PNP triode is connected with a negative power supply VEE(ii) a The emitter electrodes of the NPN triode and the PNP triode are connected with a driving resistor RgThe left end of (1); drive resistor RgThe right end of the base/gate is connected with the base/gate of the power switch tube to be tested; the main control unit (3) outputs multi-channel control signals to respectively control Q1、Q2NPN and PNP switch on and off, and controllable precision voltage regulator D1And D2The clamp voltage value of (1) is realized by circuit implementation or programming according to requirements;
the sampling circuit (2) utilizes a sampling chip to measure the current i of the power switch tubeCSampling in real time, completing analog/digital conversion, converting the analog/digital conversion into a digital signal which can be received by a control chip, and communicating with a main control unit (3) through parallel port data communication;
the data detector (6) is configured to start working when the output signal of the power switch controller (8) jumps from a low level to a high level, communicate with the sampling circuit (2) and collect the current i flowing through the power switch tubeC；
The driving waveform generator (7) is configured to trigger after the current data collected by the data detector (6) reaches a set value, and output a serial signal to control the programmable digital voltage source (4);
the power switch controller (8) generates a PWM driving waveform, and the PWM driving waveform is amplified by a current expanding circuit (5) of the driving circuit (1) and then provides a driving signal for a power switch tube in the converter.
2. The gate driver based switch ringing suppression circuit of claim 1, wherein the schmitt trigger, NPN transistor, and PNP transistor respond to the input signal faster than the switching speed of the controlled power switch.
3. A gate driver based switch ringing suppression circuit according to claim 1 or 2, characterized in that the sampling interval of the sampling chip of the sampling circuit (2) cannot be higher than half the current rise time, wherein the current rise time is from 10% of the load current to 90% of the load current.
4. A method of controlling a gate driver based switch ringing suppression circuit according to any one of claims 1, 2 or 3, comprising the steps of:
the method comprises the following steps: setting an initial controllable precision voltage-stabilizing source D1And D2A voltage value;
step two: the power switch controller (8) outputs low level, the drive waveform generator (7) outputs two paths of serial signals to control the controllable precise voltage stabilizing source D1And D2Respectively clamping the set voltage values;
step three: the power switch controller (8) outputs high level to start the power switch tube to be tested and the data detector (6), and simultaneously the switch tube Q of the digital voltage source (4) can be programmed1On, Q2Turning off;
step four: when the data detector (6) detects that the current value collected by the ADC sampling circuit (2) reaches the load current, the switching tube Q of the programmable digital voltage source (4)2On, Q1Turning off;
step five: when the data detector (6) detects that the current value collected by the ADC sampling circuit (2) reaches a first peak value, the switching tube Q of the programmable digital voltage source (4)1On, Q2Turning off;
step six: the current i flowing through the power switch tube is judged by a data detector (6)CWhether ringing is present; if present, reducing the controllable precision voltage-stabilizing source D2The set voltage value of (3); if not, maintaining a controllable precision voltage regulator D2The set voltage value of (3);
step seven: and repeating the second step to the sixth step for the next switching period of the switching tube to be tested.
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| CN202010172966.9A CN111431395B (en) | 2020-03-13 | 2020-03-13 | Switch ringing suppression circuit based on gate driver and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684238A (en) * | 2021-01-08 | 2021-04-20 | 四川湖山电器股份有限公司 | Switching power tube load current real-time monitoring circuit and monitoring system |
| CN113067991A (en) * | 2021-03-30 | 2021-07-02 | 中国科学院长春光学精密机械与物理研究所 | Self-defined waveform driving circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645993A (en) * | 2009-06-26 | 2010-02-10 | 蒋菊生 | Switch for controlling ringing of telephone |
| CN102790735A (en) * | 2011-05-16 | 2012-11-21 | 株式会社电装 | Ringing suppression circuit |
| CN106130524A (en) * | 2016-06-14 | 2016-11-16 | 圣邦微电子（北京）股份有限公司 | Self adaptation ring cancellation gate driver circuit and driver |
| US20180159522A1 (en) * | 2016-12-07 | 2018-06-07 | Fuji Electric Co., Ltd. | Driver circuit and semiconductor module having same |
| CN108982998A (en) * | 2018-07-12 | 2018-12-11 | 浙江大学 | A kind of detection circuit and detection method of on-line checking binding line ageing process |
-
2020
- 2020-03-13 CN CN202010172966.9A patent/CN111431395B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645993A (en) * | 2009-06-26 | 2010-02-10 | 蒋菊生 | Switch for controlling ringing of telephone |
| CN102790735A (en) * | 2011-05-16 | 2012-11-21 | 株式会社电装 | Ringing suppression circuit |
| CN106130524A (en) * | 2016-06-14 | 2016-11-16 | 圣邦微电子（北京）股份有限公司 | Self adaptation ring cancellation gate driver circuit and driver |
| US20180159522A1 (en) * | 2016-12-07 | 2018-06-07 | Fuji Electric Co., Ltd. | Driver circuit and semiconductor module having same |
| CN108982998A (en) * | 2018-07-12 | 2018-12-11 | 浙江大学 | A kind of detection circuit and detection method of on-line checking binding line ageing process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684238A (en) * | 2021-01-08 | 2021-04-20 | 四川湖山电器股份有限公司 | Switching power tube load current real-time monitoring circuit and monitoring system |
| CN112684238B (en) * | 2021-01-08 | 2024-05-24 | 四川湖山电器股份有限公司 | Switch power tube load current real-time monitoring circuit and monitoring system |
| CN113067991A (en) * | 2021-03-30 | 2021-07-02 | 中国科学院长春光学精密机械与物理研究所 | Self-defined waveform driving circuit |
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