CN111478561A - Peak value eliminating method and circuit - Google Patents
Peak value eliminating method and circuit Download PDFInfo
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- CN111478561A CN111478561A CN202010367663.2A CN202010367663A CN111478561A CN 111478561 A CN111478561 A CN 111478561A CN 202010367663 A CN202010367663 A CN 202010367663A CN 111478561 A CN111478561 A CN 111478561A
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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
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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
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
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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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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0081—Power supply means, e.g. to the switch driver
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Abstract
The invention discloses a peak value eliminating method and a circuit, wherein the method comprises the following steps: collecting a driving demand of a first power tube, wherein the driving demand is determined according to the state or load demand of the first power tube; determining a matching driving signal of the peak eliminating driving circuit according to the driving requirement; enabling the first power tube to obtain a peak eliminating driving signal or enabling the first power tube to discharge charges based on the matching driving signal; the driving signal generated by the peak eliminating driving circuit is variable, different peak eliminating driving circuits are selected based on driving requirements, and the conduction speed of the first power tube is controlled, so that the reliability and the stability of the circuit are further improved.
Description
Technical Field
The present disclosure relates to the field of switching power supply technologies, and more particularly, to a peak cancellation method and circuit.
Background
Gallium nitride power transistors are widely used in electronic devices requiring high frequency operation, with excellent breakdown voltage, higher power density, and higher operating temperature. However, as the power tube is switched at a high frequency, the power tube will cause jitter of the power supply voltage and instantaneous voltage spikes, which poses a fatal threat to the power tube.
How to effectively eliminate the voltage spike of the gallium nitride power tube and further improve the stability and reliability of the power tube is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a peak value eliminating method, which is used for solving the technical problems of the jitter of power supply voltage and instantaneous voltage peak caused by the high-frequency operation of a gallium nitride power tube in the prior art, is applied to a peak value eliminating circuit comprising a first power tube and a peak eliminating driving circuit,
in some embodiments of the present application, the method comprises:
acquiring a driving demand of the first power tube, wherein the driving demand is determined according to the state or load demand of the first power tube;
determining a matching driving signal of the peak eliminating driving circuit according to the driving requirement;
enabling the first power tube to obtain a peak eliminating driving signal or enabling the first power tube to discharge charges based on the matching driving signal;
wherein the driving signal generated by the peak eliminating driving circuit is variable.
In some embodiments of the present application, the peak cancellation circuit further includes a logic circuit, and the driving requirement is collected by the logic circuit, and the matching driving signal is used to enable the first power transistor to obtain a peak cancellation driving signal or to discharge a charge of the first power transistor, specifically:
if the first power tube is in a conducting state, enabling the first power tube to obtain a first peak eliminating driving signal based on the matching driving signal;
and if the first power tube is in an off state, discharging the charges based on the matching driving signal.
In some embodiments of the present application, the obtaining a peak-canceling driving signal or discharging a charge of the first power transistor based on the matching driving signal includes:
if the load demand is larger than a first reference value, enabling the first power tube to obtain a second peak-eliminating driving signal based on the matched driving signal;
discharging the charge based on the matched drive signal if the load demand is less than a second reference value;
and if the load demand is between the first reference value and the second reference value, enabling the first power tube to obtain a third peak-eliminating driving signal based on the matched driving signal.
In some embodiments of the present application, the peak cancellation circuit further includes a discharge circuit, and the charge is discharged by the discharge circuit after receiving a pulse signal of a preset pulse generation device.
Correspondingly, the application also provides a peak value eliminating circuit, which comprises a first power tube and a driving circuit, and further comprises a logic circuit, a peak value eliminating driving circuit and an emission circuit,
in some embodiments of the present application, the logic circuit is configured to collect a driving requirement of the first power transistor;
the peak eliminating driving circuit is used for determining a matching driving signal according to the driving requirement and enabling the first power tube to obtain a peak eliminating driving signal or discharging the charge of the first power tube based on the matching driving signal;
the discharge circuit is used for discharging the charges according to a pulse signal sent by a preset pulse generating device;
wherein the driving requirement is determined according to the state or load requirement of the first power tube, and the driving signal generated by the peak eliminating driving circuit is variable.
In some embodiments of the present application, the,
the peak-canceling driving circuit comprises a first node, a second node and a third node,
the first node is connected with the driving circuit and the logic circuit;
the second node is used for receiving a pulse signal;
the third node is connected with the grid electrode of the first power tube.
In some embodiments of the present application, the,
the peak-canceling drive circuit includes one or more diodes connected in series between the first node and the third node.
In some embodiments of the present application, the,
the peak-canceling driving circuit comprises a plurality of sub-circuits connected in parallel between the first node and the third node, each sub-circuit comprises one or more diodes connected in series with a switch, and the number of diodes in different sub-circuits is different.
In some embodiments of the present application, the,
the first end of the discharge circuit is used for receiving pulse signals, the second end of the discharge circuit is connected with the first node, and the third end of the discharge circuit is grounded.
In some embodiments of the present application, the,
the discharge circuit comprises a single switching tube or a plurality of switching tubes connected in series.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a peak value eliminating method and a circuit, wherein the method comprises the following steps: collecting a driving demand of a first power tube, wherein the driving demand is determined according to the state or load demand of the first power tube; determining a matching driving signal of the peak eliminating driving circuit according to the driving requirement; enabling the first power tube to obtain a peak eliminating driving signal or enabling the first power tube to discharge charges based on the matching driving signal; the driving signal generated by the peak eliminating driving circuit is variable, different peak eliminating driving circuits are selected based on driving requirements, and the control of the conduction speed of the first power tube is achieved, so that the reliability and the stability of the circuit are further improved, and the application range of the first power tube is further expanded.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating a peak value elimination method according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a structure of a peak cancellation circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a peak reduction driving circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the discharge circuit according to an embodiment of the present invention;
fig. 5 shows a schematic diagram of the discharge circuit in another embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As described in the background, when the gan power tube operates at high frequency, it will cause the jitter of the power supply voltage and the instantaneous voltage spike, which will bring fatal threat to the power tube.
In order to solve the above problem, an embodiment of the present application provides a peak value elimination method, applied in a peak value elimination circuit including a first power transistor and a peak elimination driving circuit, as shown in fig. 1, including the following steps:
step S101, collecting a driving requirement of the first power tube, wherein the driving requirement is determined according to the state or load requirement of the first power tube.
Specifically, in order to further improve the stability and reliability of the first power tube and expand the application range of the first power tube, the peak-canceling control circuit needs to determine the matching driving signal according to the state or load requirement of the first power tube, so that the first power tube obtains the corresponding peak-canceling driving signal. In a preferred embodiment of the present application, the peak value elimination circuit further includes a logic circuit, and the driving requirement is collected by the logic circuit, and a corresponding logic control signal is generated according to the collected driving parameter representing the state of the first power tube or the load requirement, and the matching driving signal is determined according to the obtained logic control signal.
And step S102, determining a matching driving signal of the peak eliminating driving circuit according to the driving requirement.
Since the peak-canceling drive signal generated by the peak-canceling drive circuit is variable, the matching drive signal of the peak-canceling drive circuit can be determined according to the drive requirement.
And step S103, enabling the first power tube to obtain a peak eliminating driving signal or discharging the electric charge of the first power tube based on the matching driving signal.
Particularly, the application range of the first power tube is further improved while the stability and the reliability of the first power tube are guaranteed. This is because the matching driving signal of the peak-eliminating driving circuit is determined based on the driving requirement, that is, when the driving requirement changes, the first power tube adjusts the peak-eliminating control circuit generating the peak-eliminating driving signal according to the change of the driving requirement, and different peak-eliminating driving circuits can process voltages or currents at different frequencies.
In order to improve the efficiency of the power transistor, in a preferred embodiment of the present application, the peak-eliminating driving signal is obtained for the first power transistor or the charge of the first power transistor is discharged based on the matching driving signal, specifically:
if the first power tube is in a conducting state, enabling the first power tube to obtain a first peak eliminating driving signal based on the matching driving signal;
and if the first power tube is in an off state, discharging the charges based on the matching driving signal.
Specifically, when the power switch states or the load requirements are different, peak-canceling drive circuits for performing peak-canceling processing on drive voltage or current are different, and if the first power tube is in a conducting state, the first power tube is enabled to obtain a first peak-canceling drive signal based on the matching drive signal; and if the first power tube is in an off state, discharging the charges based on the matching driving signal.
It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and other ways of obtaining the peak-eliminating driving signal for the first power transistor or discharging the charge of the first power transistor based on the matching driving signal all belong to the protection scope of the present application.
In order to expand the operating range of the power tube, in a preferred embodiment of the present application, the peak-eliminating driving signal is obtained for the first power tube or the charge of the first power tube is discharged based on the matching driving signal, specifically:
if the load demand is larger than a first reference value, enabling the first power tube to obtain a second peak-eliminating driving signal based on the matched driving signal;
discharging the charge based on the matched drive signal if the load demand is less than a second reference value;
and if the load demand is between the first reference value and the second reference value, enabling the first power tube to obtain a third peak-eliminating driving signal based on the matched driving signal.
Specifically, in order to further expand the working range of the power tube while ensuring the stability and reliability of the first power tube, even if the first power tube can work in different high frequency bands, the peak-eliminating processing mode disclosed by the invention adopts segmented driving control, so that the first power tube obtains a peak-eliminating driving signal or discharges the charge of the first power tube based on the matching driving signal.
It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and other ways of obtaining the peak-eliminating driving signal for the first power transistor or discharging the charge of the first power transistor based on the matching driving signal all belong to the protection scope of the present application.
In order to discharge the charge when the first power transistor is turned off, in a preferred example of the present application, the peak cancellation circuit further includes a discharge circuit, and the charge is discharged by the discharge circuit after receiving a pulse signal of a preset pulse generation device.
By applying the technical scheme, in a peak value elimination circuit comprising a first power tube and a peak value elimination driving circuit, the driving requirement of the first power tube is collected, and the driving requirement is determined according to the state or load requirement of the first power tube; determining a matching driving signal of the peak eliminating driving circuit according to the driving requirement; enabling the first power tube to obtain a peak eliminating driving signal or enabling the first power tube to discharge charges based on the matching driving signal; the driving signal generated by the peak eliminating driving circuit is variable, different peak eliminating driving circuits are selected based on driving requirements, and the control of the conduction speed of the first power tube is achieved, so that the reliability and the stability of the circuit are further improved, and the application range of the first power tube is further expanded.
In order to further illustrate the technical idea of the present invention, the technical solution of the present invention will now be described with reference to specific application scenarios.
The peak eliminating method is used for a gallium nitride power device, and comprises the steps that a peak eliminating driving circuit connected with a first power tube is designed in the peak eliminating method, the peak eliminating driving circuit is used for determining a matching driving signal according to driving requirements, and the first power tube obtains the peak eliminating driving signal or discharges charges of the first power tube based on the matching driving signal; the discharging circuit is used for discharging the charges of the first power tube according to the received pulse signals, and the pulse signals are generated by a preset pulse generating device.
As shown in fig. 2, the logic control circuit generates a logic control signal according to the received state or load requirement of the first power transistor M1, and the peak-eliminating driving circuit causes the peak-eliminating driving circuit to generate a matching driving signal based on the received logic control signal, so that the first power transistor M1 obtains the peak-eliminating driving signal corresponding to the matching driving signal. When the first power transistor M1 is turned off, the charge of the first power transistor M1 is discharged through the discharge circuit.
For sensing the demand of the first power tube M1 or the load, the sensing is mainly obtained by collecting the voltage or current of the first power tube M1 in different states and load operation through a sampling circuit, which is not the invention point of the present disclosure, and therefore, the detailed description is omitted.
And for the peak eliminating driving circuit, a matching driving signal is determined according to the driving requirement. That is to say, the peak-eliminating driving signal generated by the peak-eliminating driving circuit is dynamically changed, and the change of the peak-eliminating driving signal changes along with the change of the load requirement or the state of the power tube, so that the matching degree of the generated peak-eliminating driving signal and the requirement is high, and the stability and the reliability of the output of the power tube are ensured.
The peak eliminating driving circuit comprises a first node, a second node and a third node, wherein the first node is connected with the driving circuit and the logic circuit; the second node receives a pulse signal sent by a preset pulse generating device; the third node is connected to the gate of the first power transistor M1.
As shown in fig. 2, the peak-canceling driver circuit may further include one or more diodes connected in series, where the number of diodes is related to the driving requirement of the first power transistor M1. According to the driving requirements, the matching driving signals are generated through the corresponding number of diodes, so that the first power tube M1 meets different load requirements, and the application range of the power tube is further expanded.
As shown in fig. 3, the peak-canceling driver circuit comprises a plurality of sub-circuits connected in parallel between the first node and the third node, each of the sub-circuits comprising one or more diodes connected in series with a switch, the number of diodes in different sub-circuits being different.
And the discharge circuit is used for discharging the charge of the first power tube M1 according to the pulse signal sent by the preset pulse generating device. As shown in fig. 4, the dump circuit comprises a single switching tube, a third input node, a fourth input node and a second output node, wherein the third input node is connected with the first output node and the gate of the first power tube M1; the fourth input node receives a pulse signal and controls the discharge circuit to be switched on or switched off according to the pulse signal; the second output node is connected to ground.
As shown in fig. 5, the discharging circuit may include a plurality of switches M2 connected in series, and when the first power transistor M1 is turned off, the switches M21, M22 and M2n are turned on in sequence according to the received pulse signal, so as to discharge the charge of the first power transistor M1. Furthermore, when the charge discharge of the first power tube M1 needs to be delayed or the discharge speed thereof needs to be controlled, the control of the delay or the discharge speed can be achieved by inputting different pulse signals to the plurality of switching tubes.
The present disclosure only shows the preferred embodiments by way of example, and the discharge circuit is mainly used to discharge the charge of the first power transistor M1, and therefore, any component or circuit capable of being turned on or off according to a pulse signal or other control signal to discharge the charge may be used.
Corresponding to the peak value eliminating method in the embodiment of the present application, the present application further provides a peak value eliminating circuit, as shown in fig. 2, including a first power transistor and a driving circuit, the peak value eliminating circuit further includes a logic circuit, a peak eliminating driving circuit and an emission circuit,
the logic circuit is used for acquiring the driving requirement of the first power tube;
the peak eliminating driving circuit is used for determining a matching driving signal according to the driving requirement and enabling the first power tube to obtain a peak eliminating driving signal or discharging the charge of the first power tube based on the matching driving signal;
the discharge circuit is used for discharging the charges according to a pulse signal sent by a preset pulse generating device;
wherein the driving requirement is determined according to the state or load requirement of the first power tube, and the driving signal generated by the peak eliminating driving circuit is variable.
To improve the efficiency of the peak cancellation circuit, in the preferred embodiment of the present application, as shown in figure 2,
the peak-canceling driving circuit comprises a first node, a second node and a third node,
the first node is connected with the driving circuit and the logic circuit;
the second node is used for receiving a pulse signal;
the third node is connected with the grid electrode of the first power tube.
To increase the flexibility of the peak-canceling driver circuit, in the preferred embodiment of the present application,
the peak-canceling driving circuit includes one or more diodes connected in series in sequence between the first node and the third node, as shown in fig. 2 in a specific application scenario of the present application.
To increase the flexibility of the peak-canceling driver circuit, in the preferred embodiment of the present application,
the peak-canceling driving circuit includes a plurality of sub-circuits connected in parallel between the first node and the third node, each of the sub-circuits includes one or more diodes connected in series with a switch, and the number of the diodes in different sub-circuits is different, which is shown in fig. 3 in a specific application scenario of the present application.
Each sub-circuit comprises different numbers of diodes, namely the control of the conduction speed of the first power tube is realized.
In order to discharge the charge reliably when the first power transistor is turned off or no load is required, in a preferred embodiment of the present application, as shown in fig. 2, a first terminal of the discharge circuit is configured to receive a pulse signal, a second terminal of the discharge circuit is connected to the first node, and a third terminal of the discharge circuit is connected to ground.
The discharge circuit comprises a single switching tube or a plurality of switching tubes connected in series, as shown in fig. 4, the discharge circuit comprises a single switching tube, and as shown in fig. 5, the discharge circuit comprises a plurality of switching tubes connected in series.
By applying the technical scheme, in a peak value eliminating circuit comprising a first power tube, a driving circuit, a peak eliminating driving circuit, a logic circuit and an emission circuit, the logic circuit is used for collecting the driving requirement of the first power tube; the peak eliminating driving circuit is used for determining a matching driving signal according to the driving requirement and enabling the first power tube to obtain a peak eliminating driving signal or discharging the charge of the first power tube based on the matching driving signal; the discharge circuit is used for discharging the charges according to a pulse signal sent by a preset pulse generating device; the driving requirement is determined according to the state or load requirement of the first power tube, the driving signal generated by the peak eliminating driving circuit is variable, and different peak eliminating driving circuits are selected based on the driving requirement to realize the control of the conduction speed of the first power tube, so that the reliability and the stability of the circuit are further improved, and the application range of the first power tube is further expanded.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A peak value elimination method is applied to a peak value elimination circuit comprising a first power tube and a peak value elimination driving circuit, and is characterized by comprising the following steps:
acquiring a driving demand of the first power tube, wherein the driving demand is determined according to the state or load demand of the first power tube;
determining a matching driving signal of the peak eliminating driving circuit according to the driving requirement;
enabling the first power tube to obtain a peak eliminating driving signal or enabling the first power tube to discharge charges based on the matching driving signal;
wherein the driving signal generated by the peak eliminating driving circuit is variable.
2. The method of claim 1, wherein the peak cancellation circuit further comprises a logic circuit, wherein the driving requirement is collected based on the logic circuit, and wherein the matching driving signal is used to obtain a peak cancellation driving signal for the first power transistor or discharge a charge of the first power transistor, specifically:
if the first power tube is in a conducting state, enabling the first power tube to obtain a first peak eliminating driving signal based on the matching driving signal;
and if the first power tube is in an off state, discharging the charges based on the matching driving signal.
3. The method of claim 1, wherein the enabling the first power transistor to obtain the peak-canceling driving signal or the charge draining of the first power transistor based on the matching driving signal comprises:
if the load demand is larger than a first reference value, enabling the first power tube to obtain a second peak-eliminating driving signal based on the matched driving signal;
discharging the charge based on the matched drive signal if the load demand is less than a second reference value;
and if the load demand is between the first reference value and the second reference value, enabling the first power tube to obtain a third peak-eliminating driving signal based on the matched driving signal.
4. The method of claim 1, wherein the peak cancellation circuit further comprises a discharge circuit, the charge being discharged by the discharge circuit upon receipt of a pulse signal from a predetermined pulse generating device.
5. A peak value eliminating circuit comprises a first power tube and a driving circuit, and is characterized in that the peak value eliminating circuit also comprises a logic circuit, a peak value eliminating driving circuit and an emission circuit,
the logic circuit is used for acquiring the driving requirement of the first power tube;
the peak eliminating driving circuit is used for determining a matching driving signal according to the driving requirement and enabling the first power tube to obtain a peak eliminating driving signal or discharging the charge of the first power tube based on the matching driving signal;
the discharge circuit is used for discharging the charges according to a pulse signal sent by a preset pulse generating device;
wherein the driving requirement is determined according to the state or load requirement of the first power tube, and the driving signal generated by the peak eliminating driving circuit is variable.
6. The peak cancellation circuit of claim 5,
the peak-canceling driving circuit comprises a first node, a second node and a third node,
the first node is connected with the driving circuit and the logic circuit;
the second node is connected with the logic circuit;
the third node is connected with the grid electrode of the first power tube.
7. The peak cancellation circuit of claim 6,
the peak-canceling drive circuit includes one or more diodes connected in series between the first node and the third node.
8. The peak cancellation circuit of claim 6,
the peak-canceling driving circuit comprises a plurality of sub-circuits connected in parallel between the first node and the third node, each sub-circuit comprises one or more diodes connected in series with a switch, and the number of diodes in different sub-circuits is different.
9. The peak cancellation circuit of claim 5,
the first end of the discharge circuit is used for receiving pulse signals, the second end of the discharge circuit is connected with the first node, and the third end of the discharge circuit is grounded.
10. A peak cancellation circuit as claimed in claim 9,
the discharge circuit comprises a single switching tube or a plurality of switching tubes connected in series.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488744A (en) * | 2009-03-05 | 2009-07-22 | 北京时代民芯科技有限公司 | Output driving buffer capable of reducing noise of electric power line and ground line |
| CN102545555A (en) * | 2010-11-22 | 2012-07-04 | 株式会社电装 | Load driver with constant current variable structure |
| CN203193515U (en) * | 2012-03-06 | 2013-09-11 | 三菱电机株式会社 | Switch element driving circuit |
| CN105048776A (en) * | 2014-04-28 | 2015-11-11 | 三菱电机株式会社 | Gate drive circuit |
| CN206759407U (en) * | 2017-03-20 | 2017-12-15 | 广州视源电子科技股份有限公司 | Switch driving circuit |
| CN108432104A (en) * | 2015-12-17 | 2018-08-21 | 华为技术有限公司 | A kind of Bootstrapping drive circuit and its driving method |
| CN110086334A (en) * | 2019-05-30 | 2019-08-02 | 深圳可立克科技股份有限公司 | The driving circuit and driving method and energy storage device of metal-oxide-semiconductor bridge circuit |
| CN110350771A (en) * | 2019-08-05 | 2019-10-18 | 珠海格力电器股份有限公司 | IGBT circuit with charge discharging branch, compressor and air conditioner |
| CN110572012A (en) * | 2019-08-30 | 2019-12-13 | 无锡硅动力微电子股份有限公司 | Grid driving circuit and switching power supply circuit |
-
2020
- 2020-04-30 CN CN202010367663.2A patent/CN111478561A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488744A (en) * | 2009-03-05 | 2009-07-22 | 北京时代民芯科技有限公司 | Output driving buffer capable of reducing noise of electric power line and ground line |
| CN102545555A (en) * | 2010-11-22 | 2012-07-04 | 株式会社电装 | Load driver with constant current variable structure |
| CN203193515U (en) * | 2012-03-06 | 2013-09-11 | 三菱电机株式会社 | Switch element driving circuit |
| CN105048776A (en) * | 2014-04-28 | 2015-11-11 | 三菱电机株式会社 | Gate drive circuit |
| CN108432104A (en) * | 2015-12-17 | 2018-08-21 | 华为技术有限公司 | A kind of Bootstrapping drive circuit and its driving method |
| CN206759407U (en) * | 2017-03-20 | 2017-12-15 | 广州视源电子科技股份有限公司 | Switch driving circuit |
| CN110086334A (en) * | 2019-05-30 | 2019-08-02 | 深圳可立克科技股份有限公司 | The driving circuit and driving method and energy storage device of metal-oxide-semiconductor bridge circuit |
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Application publication date: 20200731 |