CN205829454U - A kind of intelligentized IGBT constant current driving device - Google Patents
A kind of intelligentized IGBT constant current driving device Download PDFInfo
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Abstract
The utility model discloses a kind of intelligentized IGBT constant current driving device, including isolation DC DC module, PLD digital control module, DAC D/A converter module, controlled constant-current source, voltage ratio relatively logic circuit, gate leve current collection circuit and current ratio relatively logic circuit.Primary side controls the driving power supply of part and drives signal for the driving power supply of secondary side offer isolation and to drive signal through isolation DC DC module, and the alarm signal of secondary side is the alarm signal that primary side provides isolation through isolating DC DC module；Signal, voltage ratio is driven to be connected with the input of PLD digital signal compared with the outfan of logic circuit with current ratio compared with logic circuit, the output of PLD is connected with the input of DAC D/A converter module, DAC D/A converter module is connected with the input of controlled constant-current source with subtraction circuit output, and the output of controlled constant-current source is connected through the gate leve of resistance Rg with IGBT that overdrive.This device, digital control as core with PLD, the output controlling loop can be regulated according to the difference of different model IGBT parameter, it is achieved to different series, the IGBT optimum control of different model.
Description
Technical field
This utility model relates to a kind of IGBT drive circuit, a kind of intelligentized IGBT constant current driving device.
Background technology
Along with developing rapidly of Power Electronic Technique and semiconductor technology, Power Electronic Technique constantly penetrates into new neck
Territory.Insulated gate bipolar transistor IGBT (Insulated Gate Bipo1arTransistor) had both had the work of MOSFET
Making that speed is fast, input impedance is high, drive circuit is simple, the advantage of Heat stability is good, the current-carrying capacity containing again GTR is big, block
The multiple advantages such as voltage is high, are the perfect switch devices replacing GTR.Therefore, its range of application in modern power electronics technology
More and more extensive.Nowadays, rated current and the rated voltage of IGBT have been respectively increased 3600A and 6500V, by high-power
The modernization MW class current transformer that IGBT is constituted is widely used in the middle of all types of industries, and traction and auxiliary such as rolling stock supply
Electricity system etc..
The drive circuit of IGBT is the interface between power electronics main circuit and control circuit, is power electronic equipment
Important step, the service behaviour of whole circuit is had a great impact by the quality of its performance.Use drive circuit of good performance,
Power electronic devices can be made to be operated in comparatively ideal on off state, shorten switch time, reduce switching loss, the operation to device
Efficiency, reliability, safety have important meaning.The running environment of high-power IGBT is relatively more severe, and voltage is typically at kilovolt
Above, obtain the most in time processing once break down, the most serious consequence can be caused, even can cause security incident, because of
It is most important to the safe operation of equipment that this designs drive circuit.Traditional high-power IGBT drives and is usually by discrete unit
Part, pure analog circuit form, it is achieved defencive function limited, the accuracy of protection is by the accuracy guarantee of components and parts, at IGBT
Can produce asynchronous during series and parallel, so can leave potential safety hazard.
The drive circuit of traditional IGBT drive circuit many uses open loop approach, i.e. can only be driven by single change grid
Galvanic electricity resistance or regulation gate drive voltage control the switching process of IGBT, and the details for IGBT switching process does not has
Carry out deep analysis and control in real time, thus some unnecessary switching delay and switching losses can be increased.Recently as
The development of technology, occurring in that some intelligent IGBT drive can realize controlling, such as to the switching process details of IGBT:
(1) the IGBT drive system of multistage resistance switching, the IGBT that collector current rate of change is directly controlled by (2) drives
System.
Chinese utility model patent " intelligent digitalized high-power IGBT driving means " (Authorization Notice No.
CN204633582U) the IGBT drive system of a kind of multistage grid electricity group switching is disclosed.First pass through the detection of di/dt module
The on off state of IGBT, according to the IGBT state in which driving resistance by switching IGBT real-time for CPLD, on the one hand reduces
The switching delay of IGBT and Miller plateau time, reduce switching loss；On the other hand IGBT collection when turning on and off is reduced
The rate of change of electrode current, thus due to voltage spikes when reducing due to voltage spikes when opening and turn off, reduce IGBT because of beyond peace
Full working area and the risk that lost efficacy.Although using the Intelligent IGBT Drive Circuit changing resistance realization to have above excellent
Point, but the gate drive voltage of its drive system is still fixed voltage, the duty change stage by stage according only to IGBT is driven
Galvanic electricity hinders, it is impossible to realize IGBT gate drive current and the Linear Control of the rate of change of collector current accurately, it is impossible to
Realize ensureing that IGBT is operated in safety operation area on the basis of at utmost reducing switching loss.
Chinese utility model patent application " High Power IGBT Driver Circuit of the automatic tracing control of a kind of switching process " is (public
The number of opening CN105429440A) disclose the High Power IGBT Driver Circuit of the automatic tracing control of a kind of switching process, including three steps
Drive control module, three step drive control modules respectively with diC/ dt detection module, power amplifier module connect, diC/ dt detects
Module, power amplifier module are all connected with IGBT.Directly by collector current rate of change di/dt is sampled, will sampling
Numerical value processes through operational amplifier, according to the comparison with outside specified value, and the change of real-time control gate driving voltage,
Realize the purpose of domination set electrode current rate of change di/dt to the greatest extent.Technical scheme disclosed in this patent, simply achieves current collection
The Linear Control of electrode current rate of change di/dt, does not realize farthest reducing switching loss.Only become at collector current
The change of the control gate driving voltage that stage that rate di/dt changes is real-time, for switching delay and Miller platform rank
Section, collector current rate of change di/dt is not changed in, the mode remaining constant-voltage charge that IGBT gate charges uses.Along with
The rising of capacitance voltage, charging current necessarily reduces, especially Miller platform phase, grid capacitance voltage and charging voltage difference
The least, charging current is smaller, so can not realize farthest reducing switching delay and Miller plateau time,
Reduce switching loss.
Utility model content
Technical problem to be solved in the utility model, is the defect overcoming prior art to exist, and proposes a kind of intelligence
The IGBT constant current driving device changed.Its basic ideas are: digital control as core with PLD, by detection collector current ICWith
Step voltage U is penetrated in poleCEJudge the duty of IGBT accurately, according to the duty of IGBT, real-time change IGBT grid
Charging current, it is achieved the optimum control to IGBT, (1) is digital control as core with PLD, can be according to different model IGBT parameter
Difference regulation controls the output in loop, it is achieved to different series, the IGBT optimum control of different model.(2) reality of IGBT is driven
Matter is exactly the control to IGBT grid current discharge and recharge, this patent use digital-control constant-flow source real-time to IGBT grid discharge and recharge electricity
Stream carries out closed loop control, on the one hand can limit the maximum of IGBT grid charging and discharging currents, prevent grid and whole IGBT
Concussion occurs, on the other hand IGBT switching process can be realized optimized control.(3) IGBT colelctor electrode is effectively being suppressed
The rate of change di/dt of electric current, due to voltage spikes when reducing current spike when opening and turn off, prevent IGBT because of beyond safe work
Make district and on the basis of damaging, reduce switching delay and Miller plateau time to greatest extent, reduce switching loss, improve system
System efficiency.(4) in the case of being short-circuited, a grade V can be penetrated according to IGBT poleCEWith collector current ICState difference one
Class short circuit and the short circuit of two classes, select corresponding mode to turn off IGBT, and putting according to the size control gate electric current of short circuit current
Electricity speed, it is achieved soft switching, it is to avoid occur due to voltage spikes during shutoff, beyond the safety operation area of IGBT.
This utility model is for realizing utility model purpose, and the concrete scheme used is as follows:
A kind of intelligentized IGBT constant current driving device, including isolation DC-DC module, PLD digital control module, DAC number
Mould modular converter, controlled constant-current source, voltage ratio relatively logic circuit, gate leve current collection circuit and current ratio relatively logic circuit group
Become.Primary side controls driving power supply and driving signal to provide the driving of isolation for secondary side through isolation DC-DC module of part
Power supply and driving signal, the alarm signal of secondary side is the alarm signal that primary side provides isolation through isolation DC-DC module.Drive
Dynamic signal, voltage ratio are connected with the input of PLD digital signal compared with the outfan of logic circuit with current ratio compared with logic circuit,
The output of PLD is connected with the input of DAC D/A converter module, DAC D/A converter module and subtraction circuit output and controlled constant current
The input in source is connected, and the output of controlled constant-current source is connected through the gate leve of resistance Rg with IGBT that overdrive.
Isolation DC-DC module is mainly used in the isolation realizing between primary side and secondary side, on the one hand for realizing once
The isolation of power supply between side and secondary side, on the other hand for realize primary side and secondary side drive signal and alarm signal every
From transmission.
PLD digital control module is the core of whole system, penetrates step voltage Uce by detection collector current Ic and collection real
Time the state judging the residing work of IGBT, export corresponding digital signal according to the duty of IGBT, control rear class system
Realize the closed loop control of whole drive system.Its Main Function includes: it is optimum that (1) realizes the IGBT to different series different model
Control；(2) PWM is carried out digital filtering suppression short pulse punching；(3) according to IGBT duty, the discharge and recharge of IGBT grid is changed
Electric current improves switching characteristic, reduces Dead Time and switching loss；(4) comprehensive utilization VCEDetection and ICDetection difference one class is short
Road and the short circuit of two classes, select corresponding mode to turn off IGBT；(5) in the case of being short-circuited, can be according to short circuit current
The velocity of discharge of size control gate electric current, it is achieved soft switching, it is to avoid occur due to voltage spikes during shutoff, beyond the safe work of IGBT
Make district.
DAC D/A converter module is mainly used in being converted into the digital signal that PLD exports the voltage signal of correspondence, as rear
The input of level controlled constant-current source, uses the high-speed digital-analog conversion chip of two-way output.DAC D/A converter module can also use by
Switching device and the circuit realiration digital-to-analogue conversion of corresponding resistance network composition, as shown in Figure 2 (a) shows, switching device S11-S1n's
One end with resistance R11-R1n respectively, one end is connected, and the other end is connected with resistance R10, and the digital signal of PLD output is by controlling
Turning on and off of S11-S1n can export adjustable analog quantity Vref1, controls IGBT for the input as controllable constant-current source
Opening process.As shown in Fig. 2 (b), the input analog amount Vref2 of the turn off process constant-current source of IGBT, circuit structure and Vref1
Identical, this kind of digital-to-analogue conversion structure is complicated, and the voltage of output is linear not, but it is fast to perform speed, and cost performance is higher.
The Main Function of controlled constant current source module is to realize the accurate control to IGBT grid current, DAC module output
The set-point of analog quantity Vref1 and Vref2 grid current closed loop system time respectively IGBT opens and when IGBT turns off, grid level
The feedback quantity that analog quantity VRg is grid current closed loop system of current sampling circuit output.Controlled constant current source module is according to given
Value and feedback quantity, the grid current of real-time control IGBT, it is achieved IGBT grid current closed loop control.
Step voltage U is penetrated in IGBT pole by voltage ratio relatively logic circuitCECarry out electric resistance partial pressure and compare with corresponding threshold value voltage
Relatively, the digital quantity after comparing gives PLD；The electric current flowing through IGBT emitter stage is filtered processing by current logic comparison circuit
And the digital quantity compared after comparing with corresponding threshold value voltage gives PLD；PLD passes through voltage logic circuit and current logic
The digital quantity of circuit output can judge the duty of IGBT accurately.
The Main Function of gate leve current collection circuit is to be filtered processing also to the electric current flowing through IGBT resistance Rg
It is sent to controlled constant current source module, as the input of controlled constant-current source.
This utility model intelligentized IGBT constant current driving device, IGBT opening process as shown in Figure 3: (1) is when on PWM
Rising along when arriving, in T1 to the T2 stage, grid voltage UGE rises to U (th) (IGBT gate turn-on voltage) from negative pressure, with bigger
Driving electric current, reduce open time delay, so can improve the response speed of system；(2) VGE is reached at grid voltage
(th) after, electric current IC begins to ramp up, and IGBT enters linear zone, and from T2 to the T3 moment, electric current IC becomes with gate drive voltage UGE
Direct ratio, the slope risen by controlling UGE can efficiently control the climbing of electric current IC, according to, by controlling
The charging current of grid capacitance, can efficiently control the climbing of grid voltage, and then efficiently control the rising of electric current IC
The Reverse recovery stress of rate and diode；(3) after electric current IC reaches maximum, the voltage at module CE two ends begins to decline,
From T4 to the T5 moment, its speed declined is determined by gate charging current, and charging current is the biggest, and UCE decrease speed is the fastest,
Owing to turn-on consumption is approximately equal to the area of the triangle encircled a city when electric current rises and when collector voltage declines, so accelerating
The fall off rate of UCE, can shorten " Miller " effect duration, reduces the face that electric current IC and collector voltage UCE surrounds
Long-pending, thus it is effectively reduced the turn-on consumption of IGBT.IGBT turn off process is as shown in Figure 4: (1) when PWM trailing edge arrives,
In the T1-T2 stage, with the energy of bigger current draw grid, make UGE be reduced to Miller platform voltage as soon as possible, shorten and turn off
Postponing, IC and UCE will not be impacted by this period；(2) Miller platform is arrived when grid voltage, in the T2-T3 stage, due to
The existence of Miller platform, UCE starts slowly to rise, and IC continues to keep constant, needs the energy with bigger current draw grid,
Reduce Miller platform duration；(3) penetrating step voltage UCE when pole and rise to certain threshold values, in the T3-T4 stage, UGE is from Muller
Platform drops to UGE(th), IC declines with speed quickly, owing to major loop existing stray inductance, too high IC rate of change
Can produce too high due to voltage spikes, in order to avoid when turning off, IGBT is caused damage by too high voltages spike, this stage needs to use
The energy of less current draw grid, the rate of change of reduction UGE, thus the rate of change of domination set electrode current IC, reduce electricity
Pointing peak.(4) when collector current IC is less than certain threshold values, in the T4-T5 stage, with the energy of bigger current draw grid
Amount, shortens the tail currents time, reduces turn-off power loss.
The one intelligentized IGBT constant current driving device that the utility model proposes, digital control as core with PLD, pass through
Detection collector current ICStep voltage U is penetrated with poleCEJudge the duty of IGBT accurately, according to the duty of IGBT, real
Time the charging current of change IGBT grid, it is achieved the optimum control to IGBT, (1) is digital control as core with PLD, can basis
The difference of different model IGBT parameter regulates the output controlling loop automatically, it is achieved to different series, the IGBT of different model
Optimum control.(2) essence driving IGBT is exactly the control to IGBT grid current discharge and recharge, and this patent uses digital-control constant-flow source
Real-time carries out closed loop control to IGBT grid charging and discharging currents, on the one hand can limit the maximum of IGBT grid charging and discharging currents
Value, prevents grid and whole IGBT from concussion occur, on the other hand IGBT switching process can be realized optimized control.
(3) the rate of change di/dt of IGBT collector current is effectively being suppressed, voltage when reducing current spike when opening and turn off
Spike, on the basis of preventing IGBT because damaging beyond safety operation area, reduces switching delay to greatest extent and Miller is put down
The platform time, reduce switching loss, improve system effectiveness.(4) in the case of being short-circuited, a grade V can be penetrated according to IGBT poleCE
With collector current ICState distinguish a class short circuit and the short circuit of two classes, select corresponding mode turn off IGBT according to, and according to
The velocity of discharge of the size control gate electric current of short circuit current, it is achieved soft switching, it is to avoid due to voltage spikes occurs during shutoff, exceeds
The safety operation area of IGBT.
A kind of intelligentized IGBT constant current driving device of this utility model, digital control as core with PLD, can be according to difference
The difference regulation of model IGBT parameter controls the output in loop, it is achieved to different series, the IGBT optimum control of different model.
This utility model, what employing digital-control constant-flow source was real-time carries out closed loop control, a side to IGBT grid charging and discharging currents
Face can limit the maximum of IGBT grid charging and discharging currents, prevents grid and whole IGBT from concussion occur, the most logical
Cross the optimization that the closed loop control entering IGBT grid charging and discharging currents can realize controlling IGBT switching process.
This utility model intelligentized IGBT constant current driving device, at the rate of change effectively suppressing IGBT collector current
Di/dt, due to voltage spikes when reducing current spike when opening and turn off, prevent IGBT because damaging beyond safety operation area
On the basis of, reduce switching delay and Miller plateau time to greatest extent, reduce switching loss, improve system effectiveness.
4 intelligent IGBT drive module of the present utility model, in the case of being short-circuited, can penetrate level according to IGBT pole
VCEWith collector current ICState distinguish a class short circuit and the short circuit of two classes, select corresponding mode to turn off IGBT according to, and root
The velocity of discharge according to the size control gate electric current of short circuit current, it is achieved soft switching, it is to avoid due to voltage spikes occurs during shutoff, exceeds
The safety operation area of IGBT.
Accompanying drawing explanation
Fig. 1 is a kind of intelligentized IGBT constant current driving device circuit diagram of this utility model.
Fig. 2 is the D/A converting circuit schematic diagram that this utility model is realized by switching device and corresponding resistance network.Figure
A () is IGBT opening process D/A converting circuit schematic diagram；Figure (b) is IGBT turn off process D/A converting circuit schematic diagram.
Fig. 3 is IGBT opening process schematic diagram.
Fig. 4 is IGBT turn off process schematic diagram.
Detailed description of the invention
With embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is a kind of intelligentized IGBT constant current driving device schematic diagram of this utility model, including isolation DC-DC module,
PLD digital control module, DAC D/A converter module, controlled constant-current source, voltage ratio relatively logic circuit, gate leve current collection circuit
Form with current ratio relatively logic circuit.Drive power supply and the driving signal of primary side control part are the defeated of isolation DC-DC module
Entering, provide the driving power supply of isolation for secondary side and drive signal, the positive voltage driving power supply through isolation DC-DC module is
+ VCC, negative voltage is-VEE, provides for circuit such as rear class PLD digital control module, DAC D/A converter module, controlled constant-current sources
Power supply；The output of secondary side PLD digital control module is connected with the input of isolation DC-DC module, provides isolation for primary side
Alarm signal.Isolation DC-DC module, voltage ratio are believed with PLD numeral compared with the outfan of logic circuit compared with logic circuit and current ratio
Number input be connected, the outfan of PLD is connected with the input of DAC D/A converter module, DAC D/A converter module and gate leve
Current collection circuit outfan is connected with the input of controlled constant-current source, the outfan of controlled constant-current source through overdrive resistance Rg with
The grid of IGBT is connected.
Fig. 2 be this utility model be realize DAC digital-to-analogue conversion utility model by switching device and corresponding resistance network
Realize D/A converting circuit schematic diagram, as shown in Figure 2 (a) shows, one end of switching device S11-S1n respectively with resistance R11-R1n
One end be connected, the other end is connected with resistance R10, PLD output digital signal by control turning on and off of S11-S1n can
To export adjustable analog quantity Vref1, for controlling the opening process of IGBT as the input in controllable constant-current source.Such as Fig. 2 (b) institute
Showing, the input analog amount Vref2 of the turn off process constant-current source of IGBT, circuit structure is identical with Vref1, this kind of digital-to-analogue conversion structure
Complexity, the voltage of output is linear not, but it is fast to perform speed, and cost performance is higher.
When normally working, the driving signal that intelligentized IGBT constant current driving device controls part according to primary side is efficient
Control turning on and off of IGBT.Intelligentized IGBT constant current driving device is with PLD digital control chip as core, according to voltage
CL Compare Logic circuit and current ratio are compared with the output valve of logic circuit, and the real-time duty judging IGBT, according to the work of IGBT
Make state, the input of real-time regulation controlled constant-current source, change the charging and discharging currents of IGBT grid, it is achieved the optimum control to IGBT
System.When being high level state when driving signal by low transition, IGBT is open-minded, and PLD digital control chip is according to the work of IGBT
Making state, the real-time input Vref1 controlling controlled constant-current source, thus control the opening process of IGBT efficiently, it is concrete
Opening process is as shown in Figure 3: (1), when PWM rising edge arrives, in T1 to the T2 stage, electric current IC=0, grid voltage UGE are from negative
Press and be raised to U (th) (IGBT gate turn-on voltage), the driving electric current that the output of IGBT constant current driving device is bigger, reduce to open and prolong
Late the time, so can improve the response speed of system；(2) after grid voltage reaches VGE (th), on electric current IC starts
Rising, IGBT enters linear zone, and from T2 to the T3 moment, electric current IC is directly proportional to gate drive voltage UGE, rises by controlling UGE
Slope can efficiently control the climbing of electric current IC, according to, by the charging current of control gate electric capacity,
The climbing of grid voltage can be efficiently controlled, and then efficiently control the climbing of electric current IC and the Reverse recovery of diode
Stress；(3) after electric current IC reaches maximum, the voltage at module CE two ends begins to decline, and from T4 to the T5 moment, it declines
Speed is determined by gate charging current, and charging current is the biggest, and UCE decrease speed is the fastest, owing to turn-on consumption is approximately equal to
The area of the triangle encircled a city when electric current rises and when collector voltage declines, so accelerating the fall off rate of UCE, can shorten
" Miller " effect duration, reduces the area that electric current IC and collector voltage UCE surrounds, thus is effectively reduced IGBT's
Turn-on consumption.When drive signal be converted to low level state by high level time, IGBT turn off, PLD digital control chip according to
The duty of IGBT, the real-time input Vref2 controlling controlled constant-current source, thus control the turn off process of IGBT efficiently,
Turn off process concrete for IGBT is as shown in Figure 4: (1), when PWM trailing edge arrives, in the T1-T2 stage, takes out with bigger electric current
Taking the energy of grid, make UGE be reduced to Miller platform voltage as soon as possible, shorten turn-off delay, this period will not be to IC and UCE
Impact；(2) arriving Miller platform when grid voltage, in the T2-T3 stage, due to the existence of Miller platform, UCE starts slowly
Rising, IC continues to keep constant, needs the energy with bigger current draw grid, reduces Miller platform duration；(3)
Penetrating step voltage UCE when pole and rise to certain threshold values, in the T3-T4 stage, UGE drops to UGE(th from Muller platform), IC is with quickly
Speed decline, owing to there is stray inductance in major loop, too high IC rate of change can produce too high due to voltage spikes, in order to keep away
When exempting to turn off, IGBT is caused damage by too high voltages spike, and this stage needs to use the energy of less current draw grid, fall
The rate of change of low UGE, thus the rate of change of domination set electrode current IC, reduce due to voltage spikes.(4) it is less than as collector current IC
During certain threshold values, in the T4-T5 stage, with the energy of bigger current draw grid, shorten the tail currents time, reduce and close breakdown
Consumption.
System be short-circuited fault time, intelligentized IGBT constant current driving device can penetrate grade VCE and collection according to IGBT pole
The state of electrode current IC distinguishes a class short circuit and the short circuit of two classes, select corresponding mode turn off IGBT according to, and according to short circuit
The velocity of discharge of the size control gate electric current of electric current, it is achieved soft switching, it is to avoid due to voltage spikes occurs, beyond IGBT's during shutoff
Safety operation area.When being high level when driving signal, and IGBT output loop occurs that short-circuit conditions, intelligentized IGBT constant current are driven
Dynamic device by voltage ratio compared with logic circuit and current ratio compared with the output valve of logic circuit, the real-time shape monitoring IGBT short circuit
State, according to the input Vref2 regulating controlled constant-current source that the size of short circuit current is real-time, changes the discharge current of IGBT grid,
The velocity of discharge of efficient control gate electric current, it is achieved soft switching, is avoiding the occurrence of due to voltage spikes beyond IGBT safety operation area
In the case of, turn off IGBT as soon as possible, reduce the energy impact suffered by IGBT in short-circuit process, thus at utmost in system
IGBT module is protected in the case of being short-circuited.Detect that system is short-circuited fault at intelligentized IGBT constant current driving device
Time, on the one hand can block the output driving signal at once, on the other hand alarm signal can be sent to once by DC-DC module
Side controls part, it is achieved the protection to whole system.
Claims (1)
1. an intelligentized IGBT constant current driving device, including isolation DC-DC module, PLD digital control module, DAC digital-to-analogue
Modular converter, controlled constant-current source, voltage ratio relatively logic circuit, gate leve current collection circuit and current ratio relatively logic circuit；It is special
Levy and be: drive power supply and the driving signal of primary side control part provide driving of isolation through isolation DC-DC module for secondary side
Galvanic electricity source and driving signal, the alarm signal of secondary side is the alarm signal that primary side provides isolation through isolation DC-DC module；
Signal, voltage ratio is driven to be connected with the input of PLD digital signal compared with the outfan of logic circuit with current ratio compared with logic circuit,
The output of PLD is connected with the input of DAC D/A converter module, DAC D/A converter module and subtraction circuit output and controlled constant current
The input in source is connected, and the output of controlled constant-current source is connected through the gate leve of resistance Rg with IGBT that overdrive.
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| CN201620753488.XU CN205829454U (en) | 2016-07-18 | 2016-07-18 | A kind of intelligentized IGBT constant current driving device |
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| CN201620753488.XU CN205829454U (en) | 2016-07-18 | 2016-07-18 | A kind of intelligentized IGBT constant current driving device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932864A (en) * | 2016-07-18 | 2016-09-07 | 南京埃斯顿自动控制技术有限公司 | Intelligent IGBT (insulated gate bipolar transistor) constant-current driving device |
| CN108322200A (en) * | 2018-02-26 | 2018-07-24 | 武汉英弗耐斯电子科技有限公司 | A kind of driving circuit for driving power switching device |
| CN110022141A (en) * | 2019-03-26 | 2019-07-16 | 瓴芯电子科技(无锡)有限公司 | The driving device of power device and the method for obtaining power device real-time status |
-
2016
- 2016-07-18 CN CN201620753488.XU patent/CN205829454U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932864A (en) * | 2016-07-18 | 2016-09-07 | 南京埃斯顿自动控制技术有限公司 | Intelligent IGBT (insulated gate bipolar transistor) constant-current driving device |
| CN105932864B (en) * | 2016-07-18 | 2018-11-16 | 南京埃斯顿自动控制技术有限公司 | A kind of intelligentized IGBT constant current driving device |
| CN108322200A (en) * | 2018-02-26 | 2018-07-24 | 武汉英弗耐斯电子科技有限公司 | A kind of driving circuit for driving power switching device |
| CN108322200B (en) * | 2018-02-26 | 2021-09-14 | 武汉英弗耐斯电子科技有限公司 | Drive circuit for driving power switch device |
| CN110022141A (en) * | 2019-03-26 | 2019-07-16 | 瓴芯电子科技(无锡)有限公司 | The driving device of power device and the method for obtaining power device real-time status |
| CN110022141B (en) * | 2019-03-26 | 2023-12-12 | 瓴芯电子科技(无锡)有限公司 | Driving device of power device and method for acquiring real-time state of power device |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190425 Address after: 211100 No. 155 General South Road, Jiangning Economic and Technological Development Zone, Nanjing City, Jiangsu Province Patentee after: Nanjing Estun Automation Co., Ltd. Address before: 211100 No. 155 General Avenue, Jiangning Economic Development Zone, Nanjing City, Jiangsu Province Patentee before: Nanjing Estun Automatic Control Technology Co., Ltd. |