CN104303405B - For the gate drivers of power inverter - Google Patents

Abstract

Provide a kind of gate drivers for power inverter, wherein described gate drivers include low-side circuitry and are coupled to the high lateral circuit of low-side circuitry, wherein described high side circuit includes detection circuit, and the detection circuit is adapted to provide the error signal of the fault condition of instruction low-side circuitry.

Description

For the gate drivers of power inverter

Technical field

The present invention relates to the field of the gate drivers for power inverter, more particularly to for having multiple power The gate drivers of the power inverter of converter module.In addition, the present invention relates to the power inverters including gate drivers. In addition, the method the present invention relates to operation gate driver.

Background technology

The mould for multiple inverter modules that the electronic converter generally use use of more megawatts of power is connected with soft parallel connection Block method.In such a system, the output of each module is via paralleing reactor（reactor）And it is connected to common bear It carries.The main purpose of paralleing reactor is to adapt to the inevitably voltage difference between timing and inverter module, and then It provides through it to realize the pith of the facility of Active current balance between inverter module.

Fig. 1 schematically shows the electrical system of wind turbine 100.The blade 101 of wind turbine is coupled to power generation Machine 102, the generator 102 is via generator circuit breaker（GCB）103 and be coupled to electrical system.The electrical system Including multiple paralleing reactors 104, the power for being coupled to GCB and being used to be generated in generator, which is redirect to, to be connected in parallel Multiple inverters or deck power converter module 105 in so that the high-power output for example in several megawatts of scope can be by The electrical system of wind turbine is handled.Only schematically depicting power inverter and each in Fig. 1 includes Generator bridge 106, voltage clamp 107 and network bridge 108.The output coupling of inverter or power inverter is to other balance reactance Device 109, the paralleing reactor 109 are used to perform inevitably timing and handle the voltage difference between inverter module.Institute The output of other paralleing reactor is stated via irritability device（LN）111 and be connected to lattice network breaker（NCB）110 Hes Pulse width modulation wave filter（PWM）112.The output of NCB be then coupled to wind turbine transformer 113 and via for The other circuit-breaker of the self-shield of network（MVCN）114 and be coupled to the electrical power for conducting the generation of field of wind-force Field of wind-force collector network 115.

In addition, the electrical system includes wind turbine controllers 116 and controller 117, both is inverse for controlling Become device or deck power converter module.

In typical LV power inverters, the controller generation operated with earthing potential is switched on and off command signal For each insulated gate bipolar transistor of paralleing reactor（IGBT）Grid.IGBT grids are with from the hundreds of volts of earthing potential Special current potential and operate and therefore low-voltage command signal must be galvanically isolated from IGBT grid potentials.The Signal Regulation and every From by gate driving circuit or gate drivers execution.Gate driving circuit plate has " downside " circuit, by using pulse Transformer and to from " high side " circuit transmissioning signal.

For some internal component fault conditions, the IGBT cut-off signals from controller cannot be passed via pulse transformer It is defeated to high side to turn off the IGBT of paralleing reactor.This represents being temporarily lost with for the control of the conducting state of IGBT, this may Cause the failure of power inverter or inverter.

Thus, it is possible to there are following needs：A kind of method is provided, can to avoid or at least reduce such control and lose Probability.

The content of the invention

The needs can be by meeting according to subject matter of the independent claims.It describes favorably to implement by dependent claims Example.

According to illustrative aspect, the gate drivers for power inverter are provided, wherein the gate drivers bag It includes low-side circuitry and is coupled to the high lateral circuit of low-side circuitry, wherein the high side circuit includes detection circuit, the detection electricity Road is adapted to provide the error signal of the fault condition of instruction low-side circuitry.

Particularly, low-side circuitry and high lateral circuit can be coupled to each other by coupling element, the coupling element quilt It is adapted to signal as transmission such as electric signal or optical signalling and/or transmission AC electric currents still blocks DC electric current.

Thus, low-side circuitry and high lateral circuit can be on DC electric current and with being isolated from each other.For example, the coupling element can To be transformer or capacitor.However, the coupling element can be optical fiber or photo-coupler, both it is suitable for transmission letter Number but block electric current.

It should be noted that term " gate drivers " be not only restricted to be adapted to the equipment of the grid of driving transistor and It is that must understand on generally.Particularly, it is adapted to or is suitable for by that will drive, and control or switching signal carries The input terminal of switching device is supplied to drive or control any equipment of switching device can be considered as gate drivers.

Term " detection circuit " can refer in particular to generation be suitable for and/or be adapted to detection low-side circuitry fault condition simultaneously And the detection of instruction fault condition and/or any electronic-circuit device of error signal are provided and/or generated based on the detection.

According to illustrative aspect, provide electronic converter, including the gate drivers according to illustrative aspect and Switching device, the switching device have the input terminal for the leading-out terminal for being coupled to gate drivers.

According to illustrative aspect, the method to being operated according to the gate drivers of any illustrative aspect is provided, Wherein the described method includes the error condition that low-side circuitry is detected at high lateral circuit, the high lateral circuit is detecting error bars Error signal is generated during part, and the error signal is supplied to switching device.

According to illustrative aspect, computer program is provided, when being executed by a processor, is adapted to control basis The method of illustrative aspect.

As used herein, referring to for computer program is intended to be equal to program element and/or to comprising instruction Computer-readable medium refers to that described instruction is used for control processor or computer system to coordinate to carry out gate drivers The execution of the method for operation.Computer program element can be with any suitable programming language（Such as, such as JAVA, C++）And It is embodied as computer-readable instruction code and computer-readable medium can be stored in（Removable disk, volatibility or non-volatile Property memory, in-line memory/processor etc.）On.Instruction code is operable with to computer or any other programmable Equipment is programmed to implement be intended to function.Computer program can be from network（Such as WWW）It is available, from The network can download the computer program.

Particularly, switching device can be the transistor of electronic converter.Particularly, electronic converter can include multiple Transducer-level or module each include at least one gate drivers and are coupled in parallel to increase to convert by electronics The available electric current of device and/or quantity of power.Electronic converter（It can be more megawatts of power electronic converters）It can include flat Weigh reactor, and the paralleing reactor is adapted to provide timing and/or the electricity of the different transducer-levels for electronic converter Pressure adaptation or matching.

Believed by providing the failure for the low-side circuitry for being adapted to provide instruction gate drivers or the error of fault condition Number gate drivers, it may be possible to reducing the possibility of inverter or Power Converter faults.This is for some internal groups Part fault condition may especially be set up, for example, caused by the losing of short-circuit component and/or raster data model clock signal Power loses suddenly on " downside " circuit.In this case, for switching device（Such as transistor（Such as IGBT）） Cut-off signals can be transmitted for that switching device can be turned off from controller fast enough.Therefore, it is possible to avoid switching member The control of the conducting state of part is temporarily lost with.Particularly, it may be possible to avoiding scenario described below：If switching device is in failure Moment is in opening and conducts electric current, will keep it turned on and conduct electric current until the power of " high side " electronic device Supply failure（It is supported by high side local reservoir capacitor）Until collapsing into its under-voltage lock threshold.

Next the other embodiment of description gate drivers.However, corresponding feature can also with electronic converter, The method and computer program of operation gate driver are combined.

According to the exemplary embodiment of gate drivers, low-side circuitry and high lateral circuit and current separation each other.Particularly, It can be by providing transformer, perform separation or isolation by optical fiber or photo-coupler.

Accoding to exemplary embodiment, gate drivers include pulse transformer in addition, wherein the pulse transformer is fitted It is made into and low-side circuitry is coupled to high lateral circuit.

Compared to optical fiber or photo-coupler, pulse transformer is used as to the means of coupling or isolation can provide signal wait Time（And the variation of stand-by period）, it is crooked（And crooked variation）, voltage isolation capabilities, service life/performance degradation and The optimization of cost.Pulse transformer can use the pulse to the voltage pulse opened and to turn off latched by high side Form.

Accoding to exemplary embodiment, the gate drivers include leading-out terminal in addition, and the leading-out terminal is adapted to So that the mode that error signal is provided at the switching input terminal of switching device is coupled to switching device.

Particularly, switching device can be transistor, preferably power transistor, and can be IGBT, MOSFET, BPT, GTO or IGCT.

According to the exemplary embodiment of gate drivers, fault condition be lowside power supply lose and/or downside electricity The clock signal on road loses.

For example, losing for lowside power supply can be as caused by short-circuit component.

According to the exemplary embodiment of gate drivers, detection circuit is adapted in the time span less than predetermined limit Middle offer error signal.

Particularly, predetermined limit, which can be defined as, is so short that and is enough to protect institute when switching device is coupled to gate drivers State the time span of switching device.The example of predetermined limit can be 1 millisecond, 100 microseconds, 50 microseconds or even 10 microseconds.

According to the exemplary embodiment of gate drivers, high lateral circuit includes top section and bottom part.

According to the exemplary embodiment of gate drivers, high lateral circuit includes power supply circuit and logic circuit, wherein High side power supply circuit is coupled to lowside power supply circuit.

Particularly, detection circuit can be that the part of logic circuit or at least some parts of detection circuit or component can To be the part of logic circuit.It is supplied however, at least some parts or component of detection circuit or detection circuit can be power Answer the part of circuit.

According to the exemplary embodiment of gate drivers, detection circuit is included such that detection signal is the mode that can be generated It is coupled to mutual a pair of diodes and RC wave filters.

Particularly, detection circuit can be high side power supply circuit part and this to diode and RC wave filters with So that the mode that detection signal is supplied to logic circuit is coupled to each other.Detection signal can be used for generation error signal or can Itself to be error signal, this depends on the specific implementation mode of detection circuit.

For supply a pair of diodes and RC wave filters alternatively or additionally, it is possible to using being adapted to carry For being adapted to provide for the quick of error signal（It is for example, faster or even more faster than 100 microseconds than 1 millisecond）Logical signal Any other configuration.For example, the diode of another number can be used and thus can form at least the one of detection circuit Part.Likewise it is possible to using detection circuit or logic circuit, the square wave that detection is modulated onto in power supply is adapted to Carrier wave or square-wave signal.In this case, timer/monostable of edging trigger or phase-locked loop can be used for based on inspection It measures the presence of square wave carrier and high speed signal is provided and then may be used as detection signal and/or error signal, the error signal For turning off the switching device of corresponding paralleing reactor.

According to the exemplary embodiment of gate drivers, logical signal be supplied to leading-out terminal with（AND）With/ Or with it is non-（NAND）Element, wherein described be adapted to provide error signal at leading-out terminal with and/or with not element.

The main points of generalised example embodiment can be seen in offer or generation detection or error signal, the detection or mistake Difference signal indicates fault condition and in high side（That is, the high lateral circuit of gate drivers）Place's generation.This must with downside electricity Current phasor measurement performed by road（For closed loop current control, current balance type and overcurrent protection）It is distinguished.It is however, low Detection on side may have the shortcomings that under specific circumstances, and when generating error signal at high side, the shortcoming can be with It is avoided by.For example, due to generating error signal in high side, it can be to avoid following shortcoming：In some internal component failures Condition（For example, due on " downside " circuit caused by the losing of short-circuit component or raster data model clock signal power it is unexpected It loses）Under, the transistor from controller（Such as IGBT）Cut-off signals cannot be transferred to via pulse transformer high side with Just respective transistor is turned off.

Error signal is generated in high side to be temporarily lost with to avoid the control of the conducting state of transistor, if IGBT Opening is at the time of failure and conducts electric current, then losing for the control will cause following facts：It is described IGBT will keep it turned on and conduct electric current until the power supply of " high side " electronic device fails（By high side local reservoir electricity Container is supported）Until collapsing into its under-voltage lock threshold.At this point, in time（Possibly the failure occurred it Several milliseconds afterwards）Transistor gate will be off.However, delay of transistor shut-off（It may cause the damage to transistor Evil）It can be avoided by the case of having generated error signal in high lateral circuit.

The use of gate drivers accoding to exemplary embodiment can be particularly useful for scenario described below, wherein：

A) inverter module or deck power converter module operate in parallel（For example, in more megawatts of inverters）And/or

B) inverter module be connected within the extended period be voltage source load（For example, large size inductance/PM starts Machine/generator or supply network）, because additional more serious consequence then may occur, need short below millisecond Time much（Such as several microseconds）Interior shut-off transistor, otherwise may occur crystal tube damage.

Thus, accoding to exemplary embodiment, in the high side that gate drivers or raster data model electronic device can be provided Simple facility monitors the health status of the downside of gate drivers electronic device, and it is possible to independently very short Time（Several microseconds rather than millisecond）Interior shut-off transistor, the very short time, which is so short that, to be enough specific to shunt chopper With for preventing current accumulation to destructive horizontal during some fault conditions for being connected to AC voltage sources.

In addition, can see will be to existing high frequency for inventive idea（About 500kHz）Power supply（By low-side circuitry institute Generation）High speed monitoring be used as to the sufficiently rapid detection means of low-side circuitry failure, without additional complicated electricity Road or the additional signal to be transmitted across isolation barrier.

It has to be noted that and describe embodiment with reference to different themes.Particularly, reference method type right will It asks and describes some embodiments and comparable device type claims describe other embodiments.However, art technology Personnel will be drawn from described above and below, unless separately inform, otherwise except belonging to the feature of a type of theme Outside any combinations, between the feature in relation to different themes, particularly in the feature and device of Method type claim Any combinations between the feature of type claims are also regarded as to disclose together with the application.

In the example of aspects defined above and the other aspect embodiment to be described from below it is apparent and It is explained with reference to the example of embodiment.The present invention is described in more detail still originally below by reference to the example of embodiment Invention is not limited to the example of the embodiment.

Description of the drawings

Fig. 1 schematically shows wind turbine.

Fig. 2 schematically shows the principal layout of gate drivers.

Fig. 3 schematically shows the layout of gate drivers accoding to exemplary embodiment.

Fig. 4 schematically shows the circuit for being used to interpret fault condition.

Fig. 5 schematically shows the example of specific fault.

Specific embodiment

Diagram in attached drawing is schematical.It is noted that in various figures, similar or equivalent element can be provided There is identical reference numeral or be only different from the reference numeral of respective figure mark in the first numerical digit.

Fig. 2 schematically shows the principal layout of gate drivers 200.Particularly, Fig. 2 shows low-side circuitry 201 and height Lateral circuit 202, the high lateral circuit 202 include top section 203 and symmetrical bottom part 204.Low-side circuitry and high side electricity It is coupled to each other via the phase transformer or power supply transformer 205 supplied for high side circuit with power on road.In addition, Adapter transformer 206 and 207 is provided, respectively by low-side circuitry and the top section of high lateral circuit and base portion split-phase coupling It closes.

In addition, high lateral circuit includes power supply circuit 208, it is coupled to power supply transformer 205 and to high side Circuit with power.Particularly, power supply circuit 208 includes being respectively formed the top section and base portion for high lateral circuit Two parts 209 and 210 for the power supply being divided to.In two parts of power supply circuit 208 each include diode and Capacitor（For example, local reservoir capacitor）, and it is connected respectively to the top section 211 of high lateral circuit and high lateral circuit The logical gate of bottom part 212.

The logical gate of the top section 211 of high lateral circuit is included in the control for being coupled to signal conditioning unit 214 on one side Then logic 213 processed, the signal conditioning unit 214 are coupled to the first terminal 215 of gate drivers.On another side, control Logic 213 processed is coupled to one 206 in adapter transformer.Similarly, the logic section subpackage of the bottom part 212 of high lateral circuit The control logic 216 for being coupled to signal conditioning unit 217 on one side is included, then the signal conditioning unit 217 is coupled to grid The Second terminal 218 of driver.On another side, control logic 216 be coupled in adapter transformer another 207.Through By adapter transformer, top command signal or top control signal and bottom command signal or bottom control signal are carried respectively It is supplied to the top section and bottom part of high lateral circuit.

First terminal 215 is coupled to the element 219 that is connected with Second terminal 218, and the element 219 that is connected includes and two The first transistor 220 of 221 parallel coupled of pole pipe, wherein first terminal 215 are connected to the grid of the first transistor 220.It is connected The second transistor 222 for connecing element 219 is coupled to Second terminal 218 and is parallel-connected to the second diode 223.Transistor 220 source electrode is coupled to voltage DC+ and the source electrode of transistor 222 is coupled to voltage DC-.The drain electrode of transistor is coupled to connected It connects, it is described to be connected and then be coupled to paralleing reactor 224.

Fig. 3 schematically shows the layout of gate drivers accoding to exemplary embodiment.The gate drivers and figure of Fig. 3 The gate drivers described in 2 are generally equivalent, so that only describing difference following.Particularly, driven according to the grid of Fig. 3 The power supply circuit of dynamic device includes detection circuit or element, and one of detection circuit 330 is provided for power supply electricity The top section on road and the second detection circuit 331 are provided for the bottom part of power supply circuit.Particularly, the first He Each in second detection circuit 330 and 331 includes a pair of diodes 332 and 333 and 334 and 335 and RC filters respectively Ripple device 336 and 337 has time constant in microsecond range, is, for example, less than 100 microseconds, such as about 2 microseconds.With it is non- The RC wave filters of normal short-time constant are combined in rectified 500kHz square waves）Additional the two of the diastem of middle appearance Pole pipe provides the signal rapidly declined in the case where lowside power supply loses or in the case where clock signal loses（Its Command signal will be caused to be frozen in current state）.Thus, detection circuit offer is effective as " IGBT opens enabled " letter Number function.Respectively by with or with not element 338 and 339 by corresponding signal and existing " high side " that is provided by control logic Gate order signal phase with.The event that the obtained signal through with change is provided to signal conditioning unit and occurs on downside Shut-off IGBT in several microseconds of barrier, so as to prevent destructive electric current evolution.

Interchangeable solution includes rapid detection（10 microseconds of ＜）Voltage lose and the switching of power supply not In the presence of and high side power supply is kept within the sufficient time simultaneously（The energy stored in reservoir capacitance）Come with controlled Mode turn off any method of IGBT.

These replaceable solutions include：

Interchangeable diode arrangement causes to generate identical effective（Quickly）Error signal；

The presence of square wave carrier is detected by using the timer/monostable or phase-locked loop of edging trigger, from it In high speed signal can be used for turn off IGBT.

Hereinafter, some the specific fault conditions that may occur are described in further detail.

The consequence for the fault condition that may occur when inverter module operates in parallel will be explained first.Any given At the moment, the total load current in specific phase is equably shared between the inverter module of " n " a soft parallel connection, so that not surpassing Cross the rated current of each inverter module.If the however, condition that breaks down on one of inverter module in parallel（Example Such as, power supply loses or clock signal loses）So that single IGBT is mistakenly maintained at opening within the extended period In, and obtained order is published for shut-off IGBT, then and n-1 IGBT will be immediately turned off, and be followed by its raster data model The upper faulty IGBT of tool is turned off after several milliseconds.

Such consequence is：The dominance of n shunt chopper module（prevailing）Phase current（Failure when It carves）It will be diverted in the single IGBT that has kept it turned on, this is with the rate only determined by the inductance of paralleing reactor.Several micro- In second, total dominant phase current is passed to single IGBT.If dominant phase current（For n shunt chopper Module）Electric current commutation more than single IGBT limits, then this will cause IGBT to be more than that its maximum commutation is limited and caused brokenly It is bad.After the fault condition therefore the maximum acceptable time delay of safe shutdown is：

Wherein, the number of n=inverter module, I=IGBT changes To limitation electric current --- the instantaneous inverter module phase current before tripping, and V=DC link voltages.

Fig. 4 schematically shows the circuit for being used to interpret fault condition.Fig. 4 schematically shows multiple inverter modules 440th, 441 and 442.For clarity, for each inverter module, only show to be connected to balance via being connected Two transistors of reactor（With reference to Fig. 2 and 3）.

Hereinafter, different failure examples is explained with some keywords

● primary condition：AC current waveforms are negative and the operation at load simultaneously.Bottom IGBT（Extremely）In opening, and dominant phase current is therefore conducted due to the negative polarity of electric current.（It is examined below The short time interval of worry（Several microseconds）On and relatively large supply inductance, AC electric currents can be considered as constant negative current source）

● failure is happened at as described aboveGate drivers downside so thatIt cannot abide by Follow shut-off order.

● shut-off order is sent toExtremelyIt is or a) failure as a result, will as initiating to trip B) it is normal turn-off event.

● result：ExtremelyBe turned off andIt is held on

● instantaneously,ExtremelyThe corresponding share of total phase current of middle flowing is diverted into accordingly Top diodeExtremely, and simultaneously byThe share-maintenance of the electric current of conduction existsIn Conduction（And it does not commutate to）.

● it is obtainedExtremelyThe voltage applied at both ends is and same now with electric current on the contrary, cause to reduce electric current WhenThe voltage applied at both ends is in the polarity identical with electric current, so as to cause corresponding increase in electric current.Electric current Change rate by DC link voltages andExtremelyValue determine.（As previously described）

● electric current is final（After a few microseconds）Extremely（And thereforeExtremely）Middle reduction To zero, at the point,ExtremelyNo longer forward bias, and thereforeWithExtremelyBoth ends The voltage applied becomes zero, so as to cause（Almost）The other electric current for being zero changes（The microsecond considered in this scene On time frame）

● flowing exists total dominant phase current nowIn

● if immediately before the failure, it is more than for dominant total phase current of n shunt chopperPeak point current commutation limitation, thenBoth it had been no longer able to turn off in the case of no destruction, it can not It is kept it turned in the case of no destruction.

Hereinafter, another situation is described, corresponds to situations below：Wherein single/shunt chopper or power conversion Device is connected to AC voltage sources.

If single IGBT is in the extended period（Several milliseconds）It is inside mistakenly held on, then at one of AC voltage sources Half period（half-cycle）There is the short circuit via the following in period：

● load reactance（For the principal reactance device of network inverter（LN）Or it is leaked for the generator of generator inverter Inductance）

● the IGBT of mistake conducting

● the diode in the adjacent phase of the IGBT in mistake conducting.

Fig. 5 schematically shows the example of specific fault.Particularly, Fig. 5 is shown by single IGBT（）（It keeps In conducting）Obtained short circuit paths（Runic）An example.As in Fig. 4, to the given inverter module only company of showing Three transistors of paralleing reactor 553 are connected to 550,551 and 552.This three couple corresponds to the different phases of AC electric currents.Separately Outside, Fig. 5 shows the AC voltage sources 554 that paralleing reactor is coupled to.

During the half period of conducting（This can depend on the multiple cycles how long IGBT costs turn off）, will deposit ByIncrease in identified IGBT/ diode currents, wherein E are that the EMF and L of voltage source are total Loop inductance.

Depending on the voltage and inductance of supply, the fault mode of IGBT can be any of following：

I) electric current is more than the maximum current of commutation.

Ii) due in the extended time（Several milliseconds）It is interior（But still it is excessive）The heating effect of smaller electric current Caused excessive junction temperature（Tj）Caused destruction.

In addition, above two situation can be combined in a kind of situation, after described in the context in Fig. 4 Fruit and the superposition of the consequence described in the context of Fig. 5：

The dominant phase current of all shunt choppers will be with determined by paralleing reactor（Rapidly）Rate and pass It is delivered to the IGBT of mistake conducting.

Meanwhile total dominant electric current will be also supplied instantaneously determined by EMF and supply/generator impedance（Less Rapidly）Rate and increase.

It should be noted that term " comprising " be not excluded for other element or steps and "a" or "an" be not excluded for it is more It is a.Equally, can be combined from the element that different embodiments describe in association.It is it should also be noted that attached in claim Icon remembers the scope that should not be construed as limited to claim.

The list of reference numeral：

100 wind turbines

101 blades

102 generators

103 generator circuit breakers

104 paralleing reactors

105 inverter modules

106 generator bridges

107 voltage clamps

108 network bridges

109 paralleing reactors

110 lattice network breakers

111 irritability devices

112 PWM wave filters

113 transformers

114　 MVCN

115 collector networks

200 gate drivers

201 low-side circuitries

202 high lateral circuits

The top section of 203 high lateral circuits

The bottom part of 204 high lateral circuits

205 power supply transformers

206 adapter transformers

207 adapter transformers

208 power supply circuits

The top section of 209 power supply circuits

The bottom part of 210 power supply circuits

The logical gate of the top section of 211 high lateral circuits

The logical gate of the bottom part of 212 high lateral circuits

213 control logics

214 signal conditioning units

215 first terminals

216 control logics

217 signal conditioning units

218 Second terminals

219 are connected element

220 the first transistors

221 first diodes

222 second transistors

223 second diodes

224 paralleing reactors

330 first detection circuits

331 second detection circuits

332-335 diodes

336 the oneth RC wave filters

337 the 2nd RC wave filters

338 and/and not element

339 and/and not element

440-442 inverter modules

550-552 transistors pair

553 paralleing reactors

554 AC voltage sources.

Claims (12)

1. for the gate drivers of power inverter（200）, the gate drivers include：

Low-side circuitry（201）,

It is coupled to low-side circuitry（201）High lateral circuit（202）,

Wherein described high side circuit（202）Including detection circuit（330、331）, it is low that the detection circuit is adapted to offer instruction Lateral circuit（201）Fault condition error signal,

Wherein described detection circuit（330、331）It is adapted to provide error signal in the time span less than predetermined limit.

2. gate drivers according to claim 1（200）, wherein low-side circuitry（201）With high lateral circuit（202）With that This current separation.

3. gate drivers according to claim 1 or 2（200）, wherein the gate drivers（200）Further include pulse Transformer（205）, wherein the pulse transformer（205）It is adapted to low-side circuitry（201）It is coupled to high lateral circuit （202）.

4. gate drivers according to claim 1 or 2（200）, wherein the gate drivers（200）Further include output Terminal（215、218）, the leading-out terminal is adapted to so that in switching device（220、222）Switching input terminal at carry It is coupled to switching device for the mode of error signal（220、222）.

5. gate drivers according to claim 1 or 2（200）, wherein the fault condition is lowside power supply It loses and/or the clock signal of low-side circuitry loses.

6. gate drivers according to claim 1 or 2（200）, wherein the high side circuit（202）Including top section （203）And bottom part（204）.

7. gate drivers according to claim 1 or 2（200）, wherein the high side circuit（202）Including power supply Circuit（209）And logic circuit（211）, wherein the high side power supply circuit（209）It is coupled to lowside power supply electricity Road.

8. gate drivers according to claim 1 or 2（200）, wherein the detection circuit（330、331）Including so that Signal, which must be detected, to be the mode that can be generated and is coupled to mutual a pair of diodes（332、333、334、335）And RC wave filters （336、337）.

9. gate drivers according to claim 1 or 2（200）, wherein logical signal is supplied to leading-out terminal With and/or and not element（338、339）, wherein described be adapted to provide mistake at leading-out terminal with and/or with not element Difference signal.

10. a kind of electronic converter, including：

Gate drivers according to any one of claim 1 to 9（200）,

Switching device with input terminal（220、221）, the input terminal is coupled to gate drivers（200）Output terminal Son（215、218）.

It is 11. a kind of to according to the gate drivers any one of claim 1 to 9（200）The method operated, including Following steps：

In high lateral circuit（202）Place's detection low-side circuitry（201）Error condition；

Error signal is generated when detecting error condition；And

There is provided error signal to switching device（220、222）.

It is 12. a kind of to according to the gate drivers any one of claim 1 to 9（200）The equipment operated, bag It includes：

For in high lateral circuit（202）Place's detection low-side circuitry（201）Error condition device；

For generating the device of error signal when detecting error condition；And

For providing error signal to switching device（220、222）Device.