CN206370970U - Drive current adjustment device - Google Patents
Drive current adjustment device Download PDFInfo
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- CN206370970U CN206370970U CN201621369774.2U CN201621369774U CN206370970U CN 206370970 U CN206370970 U CN 206370970U CN 201621369774 U CN201621369774 U CN 201621369774U CN 206370970 U CN206370970 U CN 206370970U
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Abstract
, can be according to the size of the line voltage adjust automatically triode driving current at sampling resistor two ends the utility model discloses a kind of drive current adjustment device, it includes Linear Driving module, sampling module and variable resistor module.The line voltage that variable resistor module is obtained according to sampling module from the sampling of sampling resistor two ends produces equivalent resistance, the driving current for the equivalent resistance adjust automatically triode that Linear Driving module is produced according to variable resistor module.Ensure that triode in full voltage range, is at optimal drive current state.The utility model is with known fixed current type of drive compared with linear drive mode, and efficiency gets a promotion.
Description
Technical field
The utility model is related to AC-DC Switching Power Supplies driving field, more particularly to a kind of drive current adjustment device.
Background technology
AC-DC Switching Power Supplies drive field, typically sample mos field effect transistor (metal-oxide-semiconductor) and
Triode drives.Because the cost of triode is well below metal-oxide-semiconductor, and triode hot properties is better than metal-oxide-semiconductor, so using now
The Switching Power Supply of triode driving is more and more.But triode requires extremely strict, excessive driving current to driving current,
The loss that may result in chip power supply is increased, too small driving current, it is impossible to allow triode to enter deep saturation region, cause three
The saturation voltage drop increase of pole pipe.
Present triode type of drive has two kinds, and one kind is directly drives triode with fixed current, and the manner is simple, but
It is that drive loss is excessive, especially when low line voltage drives, efficiency is substantially reduced.Another use linear drive mode, such as Fig. 1
Shown, it is the electric current for flowing through outside primary inductor L P to flow through pliotron NPN electric currents I1, when electric current I1 is linearly increasing, is adopted
The voltage Vin at sample resistance Rcs two ends is also linearly increasing, and resistance R electric current is flowed through according to line voltage Vin and resistance R adjustment, and then
Control flows through metal-oxide-semiconductor P1 and metal-oxide-semiconductor P2 electric current, realizes Linear Driving.Due to the adjustment model of driving current in this type of drive
Enclose and limited by fixed resistance R, therefore full voltage input can not be taken into account, when low line voltage is inputted, now circuit is in maximum
The working condition of dutycycle, current supply loss is maximum, if can not also be arranged to sufficiently large driving electricity in order to take into account low pressure, during high pressure
Stream, so can not namely realize the high efficiency in full voltage range.
Utility model content
In order to solve the above problems, the utility model provides a kind of drive current adjustment device, can be according to the big of line voltage
Small adjust automatically variable resistor, the size further according to variable resistor adjusts driving current, so as to take into account full voltage input.
To achieve these goals, the utility model provides kind of a drive current adjustment device, can be according to sampling resistor two ends
Line voltage adjust automatically triode driving current size, including：
Sampling module, the sampling module carries out voltage sample to obtain to the sampling resistor for being serially connected in the emitter stage of triode
Line voltage is obtained, and the line voltage is converted into line current；
Variable resistor module, the variable resistor module receives the line current from the sampling module, and according to described
Line current produces equivalent resistance；
Linear Driving module, the equivalent resistance of the Linear Driving module based on the variable resistor module, and
The line voltage of the emitter stage of triode and driving current is produced to drive the triode.
Above-mentioned drive current adjustment device, wherein the driving current of the triode and the sampling resistor and the line
The relation formula of voltage is：Iout=k × Ipeak × Rcs × Vin/K, wherein：Iout is the driving current of the triode,
Ipeak is the collector current for flowing through the triode, and Rcs is the resistance of the sampling resistor, and Vin is the line voltage, k with
K is proportionality coefficient.
Above-mentioned drive current adjustment device, wherein the sampling module includes：
Between controlling of sampling unit, the emitter stage for being electrically connected in the sampling resistor and the triode, to sample
The line voltage；
First electric capacity, is electrically connected in the controlling of sampling unit and is grounded, to keep the line voltage；
Voltage turns current unit, is electrically connected in the controlling of sampling unit and first electric capacity, to by the line
Photovoltaic conversion is the line current.
Above-mentioned drive current adjustment device, wherein the variable resistor module includes：
First negative-feedback circuit, first negative-feedback circuit receives the line current from the sampling module, according to institute
State line current output grid-control voltage；
The first transistor, its grid receives the grid-control voltage, and by the first transistor in grid electricity
The resistance of pressure is used as the equivalent resistance.
Above-mentioned drive current adjustment device, wherein the variable resistor module also includes current reference unit, receives institute
The line current of sampling module is stated, and the line current is carried out after low pass processing, then is provided to first negative-feedback circuit.
Above-mentioned drive current adjustment device, wherein first negative-feedback circuit includes：
Second transistor, it, which drains, receives the line current；
Third transistor, its drain electrode electrically couples with the second transistor source electrode, the third transistor source ground,
The third transistor grid electrically couples with the first crystal tube grid, and the third transistor grid voltage is described the
The grid-control voltage that one negative-feedback circuit is produced；
First operational amplifier, its positive input terminal electrically couples with low voltage reference unit, and negative input end is electrically connected in institute
State between second transistor source electrode and third transistor drain electrode, output end electrically couples with the second transistor grid；
Wherein, the third transistor drain voltage is the voltage that the low voltage reference unit is produced, the 3rd crystal
The grid voltage of pipe is to make it be operated in drain voltage equal to the voltage and operating current of low voltage reference unit generation to be equal to
The voltage of the line current.
Above-mentioned drive current adjustment device, wherein the Linear Driving module includes:
Second negative-feedback circuit, the emitter stage of itself and triode is electrically connected with to obtain the line voltage, according to the line
The equivalent resistance that voltage and the variable resistor module are produced produces intermediate current；
Current converter circuit, the intermediate current that second negative-feedback circuit is produced is converted to the driving electricity
Stream.
Above-mentioned drive current adjustment device, wherein the Linear Driving module also includes fixed current unit, it is and described
Current converter circuit electrically couples, the initial current to provide the triode.
Above-mentioned drive current adjustment device, wherein second negative-feedback circuit includes：
Second operational amplifier, its positive input terminal receives the line voltage, negative input end and the 4th electric transistor
Connection, output end electrically couples with the 4th transistor gate；
4th transistor, its drain electrode is serially connected with the current converter circuit, the 4th transistor source and described second
Operational amplifier negative input end electrically couples, and the 4th transistor gate electrically joins with second operational amplifier output terminal
Connect；
Wherein, the intermediate current simultaneously flows through the current converter circuit and the 4th transistor being arranged in series,
And Im=Vin/Rout is met, wherein Im is the intermediate current, and Vin is the line current, and Rout is the equivalent resistance.
Above-mentioned drive current adjustment device, wherein the first transistor and the 4th transistor series connection, it is described in
Between electric current simultaneously flow through the current converter circuit being arranged in series, the 4th transistor and the first transistor；
Above-mentioned drive current adjustment device, wherein the current converter circuit includes：
5th transistor, its source electrode electrically couples with second negative-feedback circuit, to by the current converter circuit
Concatenated with second negative-feedback circuit, the intermediate current flows through the 5th crystal；
6th transistor, its grid electrically couples with the 5th transistor gate and source electrode electrically couples, and described
Six transistors are missed electrically to be coupled with the 5th transistor drain with supply voltage, the intermediate current is converted into institute
Driving current is stated, the 6th transistor source electrically couples and is grounded with the transistor base, to be driven described
Streaming current is delivered to the triode.
Above-mentioned drive current adjustment device, wherein the Linear Driving module also includes：
7th transistor, its drain electrode electrically couples with the transistor source, the 7th transistor source ground connection；
Drain control unit, electrically couples with the 6th transistor and the 7th transistor gate respectively, to control
The 6th transistor and the 7th transistor are made, when the 6th transistor turns, during seven transistor cutoff, institute
Triode ON is stated, when the 6th transistor cutoff, during seven transistor turns, the triode shut-off.
In summary, the utility model proposes drive current adjustment device have the beneficial effect that：By variable resistor module
Instead of the resistance R for adjusting driving current, the equivalent resistance of different resistances corresponding from different line voltages can be produced, then is led to
These different resistance equivalent resistances are crossed the driving current of triode is adjusted, it is available suitably to be driven with present line voltage
Electric current, so as to ensure that triode always works in optimal working condition.
Brief description of the drawings
Fig. 1 is the structural representation of the Linear Driving regulating current device of prior art；
Fig. 2 is the structural representation of the drive current adjustment device of the embodiment of the utility model one；
Fig. 3 is the concrete structure schematic diagram of the drive current adjustment device of the embodiment of the utility model one；
Fig. 4 is the structural representation of the Linear Driving module of the drive current adjustment device of the embodiment of the utility model one
Figure；
Fig. 5 is the structural representation of the sampling module of the drive current adjustment device of the embodiment of the utility model one；
Fig. 6 is the structural representation of the variable resistor module of the drive current adjustment device of the embodiment of the utility model one
Figure；
Embodiment
The technical solution of the utility model is described in detail below by the drawings and specific embodiments, but not used
To limit the utility model.
Fig. 2 is referred to, Fig. 2 is the structural representation of the drive current adjustment device 10 of the embodiment of the utility model one,
As shown in figure 1, drive current adjustment device 10 includes triode NPN, sampling resistor Rcs, Linear Driving module 11, sampling module
12 and variable resistor module 13, wherein, triode NPN colelctor electrode electrically couples with primary inductor L P so that primary side inductance electricity
Flow Ipeak and flow into triode NPN, sampling resistor Rcs one end electrically couples with triode NPN emitter stage, other end ground connection makes
Obtain and produce line voltage Vin at sampling resistor two ends, line voltage Vin meets formula (1)：
Vin=Ipeak × Rcs (1)
The input IN3 of sampling module 12 is electrically connected between triode NPN emitter stages and sampling resistor Rcs, is used to
Line voltage Vin is sampled, sampling module 12 can export line current Iin by line voltage Vin according to obtained by sampling from output end OUT2；
The input IN4 of variable resistor module 13 receives line current Iin from sampling module output end OUT2, and is existed according to line current Iin
Delivery outlet OUT3 goes out to produce equivalent resistance Rout；Afterwards, Linear Driving module 11 is electrical by input port IN2 and delivery outlet OUT3
Variable resistor module is serially connected in after Linear Driving module 11 by connection, while according to the line voltage received at the IN1 of input port
Vin adjusts driving current Iout and exported from delivery outlet 1 to triode NPN base stage.
Continuing with referring to Fig. 3 and Fig. 4, Fig. 3 is specific for the drive current adjustment device of the embodiment of the utility model one
Structural representation, Fig. 4 is the structural representation of the drive current adjustment device 11 of the embodiment of the utility model one；Transistor P1
Drain electrode with P2 electrically couples after mutually electrically coupling with voltage VCC, and transistor P2 is actually formed by k identical coupled in parallel
(not shown), because transistor P1 grid electrically couples with transistor P2 grid, and with the transistor P1 leakages of itself
Extremely electrically connection so that the electric current Ip2 for flowing through transistor P2 meets formula (2)：
Ip2=Ip1 × k (2)
In better embodiment of the present utility model, the number of transistors scope for constituting transistor P2 is 60~100, because
This, proportionality coefficient k is the integer between 60 and 100, and transistor N1 drain electrode electrically couples with transistor P1 source electrode, and fixed
Current unit 111 is electrically connected between transistor N1 drain electrode and transistor P1 source electrode, in preferable reality of the present utility model
Apply in mode, fixed current unit 111 is the initial drive for the triode NPN that drive current adjustment device 10 provides zero-temperature coefficient
Streaming current；The positive input terminal of operational amplifier A 1 electrically couples with input port IN1, receives line voltage Vin, operational amplifier A 1
Delivery outlet is electrically connected in transistor N1 grid, and the negative input end of operational amplifier A 1 is electrically connected in transistor N1 source
Pole, according to the empty short feature of closed loop operational amplifier so that the voltage at transistor N1 source electrode (i.e. input port IN2) place is also
Vin；Transistor N2 drain electrode electrically couples with transistor P2 source electrode, transistor N2 source ground；Due to delivery outlet OUT1
Electrically couple with transistor P2 source electrode so that electric current Ip2 is the driving current Iout exported from delivery outlet, i.e.,：
Iout=Ip2 (3)
In addition, grid of the control logic unit 112 respectively with transistor P2 and N2 electrically couples, it is of the present utility model compared with
In good embodiment, control drain element 112 can control transistor P2 and N2, when transistor P2 conductings, when transistor N2 ends,
Triode NPN is turned on, when transistor P2 cut-offs, when transistor N2 is turned on, triode NPN shut-offs.
Continuing with referring to Fig. 3 and Fig. 5, Fig. 5 is the sampling of the drive current adjustment device of the embodiment of the utility model one
The structural representation of module 12；One end of controlling of sampling unit 121 electrically couples with input IN3, to receive line voltage
Vin, the other end is electrically connected in one end that voltage turns current unit 122, in better embodiment of the present utility model, sampling
Control unit 121 can be used to adjust sampling time sequence, make sampling module 12 with it is default when ordered pair line voltage Vin sampled；Electricity
The one end for holding C1 is electrically connected in controlling of sampling unit 121 and voltage turns between current unit 122, other end ground connection, electric capacity C1
To the line voltage Vin for keeping sampling via control unit 121；Voltage turns the line voltage Vin that current unit keeps electric capacity C1
Line current Iin is converted to, and is exported from delivery outlet OUT2.
Please continue to refer to Fig. 3 and Fig. 6, Fig. 6 is variable for the drive current adjustment device of the embodiment of the utility model one
The structural representation of resistive module 13；Input port IN4 receives line current Iin from sampling module 12, and passes through current reference unit
131 transmit line current to transistor N3 drain electrodes, in the present embodiment, can when line current is by current reference unit 131
By low pass filter, to carry out low pass processing to line current Iin, so as to remove the high frequency noise in line current Iin；Due to crystalline substance
Body pipe N3 source electrode electrically couples with transistor N4 drain electrode, and transistor N3 grid and the output end of operational amplifier A 2 is electrical
Couple, and the negative input end of operational amplifier A 2 is electrically connected between transistor N3 source electrodes and transistor N4 drain electrodes so that fortune
Calculate amplifier A2, transistor N3 source electrodes and transistor N4 and constitute degeneration factor, due to the empty short feature of closed loop amplifier, so that brilliant
Body pipe N4 drain voltage is the voltage that input is produced to the low voltage reference unit 132 of the positive input terminal of operational amplifier A 2,
In better embodiment of the present utility model, low voltage reference unit 132 produces low pressure zero temp shift benchmark；Transistor N4 grid with
Transistor N5 grid and current reference unit 131 electrically couples, transistor N4 source ground, now, transistor N4 grid
Pole tension is to make transistor N4 be operated in its drain voltage to be equal to the voltage that low voltage reference unit 131 is produced, and the electricity that works
Stream is equal to the voltage for the electric current that current reference unit 131 is exported；When the resistance region that transistor works, its equivalent resistance is with being somebody's turn to do
The gate source voltage of transistor is inversely proportional, i.e., gate source voltage is higher, and the equivalent resistance of transistor is lower, otherwise when gate source voltage is got over
Low, the equivalent resistance of transistor is higher, for transistor N5, due to transistor N5 source grounds, therefore transistor N5
Gate source voltage is its grid voltage, because transistor N5 grid is electrically connected in transistor N4 grid, transistor N5's
Grid voltage is identical with transistor N4 grid voltage, so that transistor N5 equivalent resistance is controlled by transistor N4 grid electricity
Pressure, transistor N4 grid voltage is controlled by the electric current of the output of current reference unit 131, the electricity that current reference unit 131 is exported
Stream be controlled by sampling unit 12 output electric current Iin, and sampling unit 12 export electric current Iin, with sampling unit 12 sample
The line voltage Vin at sampling resistor Rcs two ends is directly proportional, i.e. transistor N5 equivalent resistance is controlled by line input voltage, in this reality
With in new embodiment, the equivalent resistance Rout that transistor N5 equivalent resistance is produced as variable resistor module 13 is defeated
Go out to output end OUT3, therefore, equivalent resistance Rout is inversely proportional with line voltage Vin, it meets formula (4)：
Rout=K/Vin (4)
Wherein Proportional coefficient K is the constant being directly proportional to triode NPN power outputs, in preferable implementation of the present utility model
In mode, the scope of Proportional coefficient K is 8.0~12.0.
Referring again to Fig. 3, because transistor P1, transistor N1 are concatenated with transistor N5, therefore flow through transistor P1's
Electric current Ip1 is identical with the electric current IN5 for flowing through transistor N5, i.e.,：
IN5=Ip1 (5)
Simultaneously as voltage is that voltage is also line at line voltage Vin, i.e. transistor N5 drain electrode at transistor N1 source electrode
Voltage Vin, therefore electric current IN5 also meets formula (6)：
IN5=Vin/Rout (6)
With reference to formula (1), (2), (3), (4), (5) and (6), it can show that triode NPN driving current Iout meets public
Formula (7)：
Iout=k × Ipeak × Rcs × Vin/K (7)
In summary, drive current adjustment device of the present utility model realizes the Different Slope in full voltage range
Linear Driving, driving current Iout size direct ratio and line voltage Vin size, when triode NPN is that high line voltage is inputted,
Driving current Iout also becomes big accordingly, and when triode NPN is that low-voltage is inputted, driving current Iout also diminishes accordingly,
Triode NPN is set to remain optimal drive current state in full voltage range, so as to realize the adaptive drive of triode
It is dynamic.In addition, in the present embodiment, transistor P1, P2, N1, N2, N3, N4 and N5 have used metal-oxide-semiconductor, but and are not used to pair
The utility model is defined, those skilled in the art can according to need to use different types of transistor unit with up to
To identical effect.
Preferred embodiment of the present utility model is above are only, not for limiting the utility model, without departing substantially from this
In the case of utility model spirit and its essence, those skilled in the art work as can make various phases according to the utility model
The change and deformation answered, but these corresponding changes and deformation should all belong to the protection model of the claim appended by the utility model
Enclose.
Claims (12)
1. a kind of drive current adjustment device, including：
Sampling module, the sampling module carries out voltage sample to obtain line to the sampling resistor for being serially connected in the emitter stage of triode
Voltage, and the line voltage is converted into line current；
Variable resistor module, the variable resistor module receives the line current from the sampling module, and according to line electricity
The raw equivalent resistance of miscarriage；
Linear Driving module, the equivalent resistance of the Linear Driving module based on the variable resistor module, and three poles
The line voltage of the emitter stage of pipe and driving current is produced to drive the triode.
2. drive current adjustment device according to claim 1, wherein the driving current of the triode and the sampling
Resistance and the relation formula of the line voltage are：Iout=k × Ipeak × Rcs × Vin/K, wherein：Iout is the triode
Driving current, Ipeak is the collector current for flowing through the triode, and Rcs is the resistance of the sampling resistor, and Vin is institute
Line voltage is stated, proportionality coefficient k is the integer between 60 to 100, and Proportional coefficient K is directly proportional to the triode power output
Constant, and K scope is 8.0~12.0.
3. drive current adjustment device according to claim 1, wherein the sampling module includes：
It is described to sample between controlling of sampling unit, the emitter stage for being electrically connected in the sampling resistor and the triode
Line voltage；
First electric capacity, is electrically connected in the controlling of sampling unit and is grounded, to keep the line voltage；
Voltage turns current unit, is electrically connected in the controlling of sampling unit and first electric capacity, to by the line voltage
It is converted into the line current.
4. drive current adjustment device according to claim 1, wherein the variable resistor module includes：
First negative-feedback circuit, first negative-feedback circuit receives the line current from the sampling module, according to the line
Electric current exports grid-control voltage；
The first transistor, its grid receives the grid-control voltage, and the first transistor is controlled into electricity in the grid
The resistance of pressure is used as the equivalent resistance.
5. drive current adjustment device according to claim 4, wherein the variable resistor module also includes current reference
Unit, receives the line current of the sampling module, and the line current is carried out after low pass processing, then provides to described first negative
Feedback circuit.
6. drive current adjustment device according to claim 4, wherein first negative-feedback circuit includes：
Second transistor, it, which drains, receives the line current；
Third transistor, its drain electrode electrically couples with the second transistor source electrode, and the third transistor source ground is described
Third transistor grid electrically couples with the first crystal tube grid, and the third transistor grid voltage is described first negative
The grid-control voltage that feedback circuit is produced；
First operational amplifier, its positive input terminal electrically couples with low voltage reference unit, and negative input end is electrically connected in described
Between two-transistor source electrode and third transistor drain electrode, output end electrically couples with the second transistor grid；
Wherein, the third transistor drain voltage is the voltage that the low voltage reference unit is produced, the third transistor
Grid voltage is it is operated in voltage and operating current of the drain voltage equal to low voltage reference unit generation equal to described
The voltage of line current.
7. drive current adjustment device according to claim 4, wherein the Linear Driving module includes:
Second negative-feedback circuit, the emitter stage of itself and triode is electrically connected with to obtain the line voltage, according to the line voltage
Intermediate current is produced with the equivalent resistance that the variable resistor module is produced；
Current converter circuit, the intermediate current that second negative-feedback circuit is produced is converted to the driving current.
8. drive current adjustment device according to claim 7, wherein the Linear Driving module also includes fixed current
Unit, electrically couples with the current converter circuit, the initial current to provide the triode.
9. drive current adjustment device according to claim 7, wherein second negative-feedback circuit includes the second computing
Amplifier and the 4th transistor：
The positive input terminal of second operational amplifier receives the line voltage, and negative input end joins with the 4th electric transistor
Connect, output end electrically couples with the 4th transistor gate；
The drain electrode of 4th transistor is serially connected with the current converter circuit, the 4th transistor source and the described second fortune
Calculate amplifier negative input end electrically to couple, the 4th transistor gate electrically joins with second operational amplifier output terminal
Connect；
Wherein, the intermediate current simultaneously flows through the current converter circuit and the 4th transistor being arranged in series, and full
Sufficient Im=Vin/Rout, wherein Im are the intermediate current, and Vin is the line current, and Rout is the equivalent resistance.
10. drive current adjustment device according to claim 9, wherein the first transistor and the 4th transistor
Concatenation, the intermediate current simultaneously flows through the current converter circuit being arranged in series, the 4th transistor and described first
Transistor.
11. drive current adjustment device according to claim 7, wherein the current converter circuit includes：
5th transistor, its source electrode electrically couples with second negative-feedback circuit, to by the current converter circuit and institute
The second negative-feedback circuit concatenation is stated, the intermediate current flows through the 5th crystal；
6th transistor, its grid electrically couples with the 5th transistor gate and source electrode electrically couples, and the described 6th brilliant
Body pipe is missed electrically to be coupled with the 5th transistor drain with supply voltage, the intermediate current is converted into the drive
Streaming current, the 6th transistor source electrically couples and is grounded with the transistor base, to the driving is electric
Stream is delivered to the triode.
12. drive current adjustment device according to claim 11, wherein the Linear Driving module also includes：
7th transistor, its drain electrode electrically couples with the transistor source, the 7th transistor source ground connection；
Drain control unit, electrically couples with the 6th transistor and the 7th transistor gate respectively, to control
The 6th transistor and the 7th transistor are stated, when the 6th transistor turns, during seven transistor cutoff, described three
Pole pipe is turned on, when the 6th transistor cutoff, during seven transistor turns, the triode shut-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621369774.2U CN206370970U (en) | 2016-12-13 | 2016-12-13 | Drive current adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621369774.2U CN206370970U (en) | 2016-12-13 | 2016-12-13 | Drive current adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206370970U true CN206370970U (en) | 2017-08-01 |
Family
ID=59392729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621369774.2U Active CN206370970U (en) | 2016-12-13 | 2016-12-13 | Drive current adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206370970U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039031A (en) * | 2018-09-28 | 2018-12-18 | 杰华特微电子（杭州）有限公司 | transistor control circuit and method |
| CN111478560A (en) * | 2020-04-30 | 2020-07-31 | 陕西亚成微电子股份有限公司 | Control method and circuit for gallium nitride power tube |
-
2016
- 2016-12-13 CN CN201621369774.2U patent/CN206370970U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039031A (en) * | 2018-09-28 | 2018-12-18 | 杰华特微电子（杭州）有限公司 | transistor control circuit and method |
| CN111478560A (en) * | 2020-04-30 | 2020-07-31 | 陕西亚成微电子股份有限公司 | Control method and circuit for gallium nitride power tube |
| CN111478560B (en) * | 2020-04-30 | 2022-09-06 | 陕西亚成微电子股份有限公司 | Control method and circuit for gallium nitride power tube |
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