CN207339638U - Intelligent power module and its high-voltage driving circuit - Google Patents
Intelligent power module and its high-voltage driving circuit Download PDFInfo
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- CN207339638U CN207339638U CN201720946815.8U CN201720946815U CN207339638U CN 207339638 U CN207339638 U CN 207339638U CN 201720946815 U CN201720946815 U CN 201720946815U CN 207339638 U CN207339638 U CN 207339638U
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Abstract
The utility model discloses a kind of intelligent power module and its high-voltage driving circuit,The drive circuit includes the first to the 6th drive circuit and the first to the 6th charge-discharge circuit,Each charge-discharge circuit includes the first signal input part,First signal output part,Power supply anode and power supply negative terminal,Power supply anode is corresponded to be connected with higher-pressure region power supply anode/low-pressure area power supply anode of intelligent power module,Power supply negative terminal is corresponded to be connected with higher-pressure region power supply negative terminal/low-pressure area power supply negative terminal of intelligent power module,Wherein,When low-pressure area power supply/higher-pressure region power supply is abnormal,Charge-discharge circuit stops exporting the drive signal that corresponding drive circuit exports to the control terminal of corresponding power switch pipe,And the first signal output part is controlled to be in low resistive state,Released with the residual charge to load-side,There is the impact brought to intelligent power module etc. so as to effectively prevent residual charge,Improve safety and reliability.
Description
Technical field
Intelligent power module technical field is the utility model is related to, more particularly to a kind of high drive of intelligent power module
Circuit and a kind of intelligent power module.
Background technology
IPM (Intelligent Power Module, intelligent power module) is a kind of by power electronics and integrated circuit
The power drive class product that technology combines.IPM integrates device for power switching and high-voltage driving circuit, and has electricity
The fault detection circuits such as pressure, overcurrent and overheat.As shown in Figure 1, IPM one side receptions MCU (Micro Control Unit,
Micro-control unit) control signal, driving subsequent conditioning circuit work, on the other hand the status signal of the system of detection is sent to
MCU.Compared with traditional discrete scheme, IPM wins increasing market with advantages such as its high integration, high reliability, especially
It is suitable for driving the frequency converter of motor and various inverters, is frequency control, metallurgical machinery, electric propulsion, servo-drive, change
A kind of desired power level electronic device of frequency household electrical appliances.
In correlation technique, IPM is using the circuit structure shown in Fig. 2, wherein each device for power switching (IGBT pipes) is by phase
The drive circuit answered is driven control, and each drive circuit is powered by the low-pressure area power supply VCC of IPM, so that
Drive circuit works normally.But in practical applications, the working environment of IPM is more severe, there are the feelings such as unstable for power supply
Condition, if VCC causes power down suddenly because of reasons such as voltage fluctuations, then since motor has inductive energy storage, energy cannot be timely
Released, it is likely that situations such as causing human electric shock, circuit damage.And in most cases due to VCC spread of voltage, and
IGBT pipes can cause saturation voltage drop excessive and abnormal heating when VCC voltages are relatively low, so general IPM can have under-voltage protection
Mechanism is serious to when being switched off mono- section of IPM when being less than a certain particular value (being generally located on 10V~11V) in VCC voltage fluctuations
Between, after the recovery of VCC voltages, then allow IPM to work on, in this case, the electricity of motor inductances does not distribute necessarily, when
After IPM re-powers work, these residual electricity are just very easy to that the IGBT pipes inside IPM are caused to impact, and send out IGBT pipes
Raw micro-damage, can make IPM premature breakdowns, influence the long-term reliability of IPM, hinder large area of the IPM in frequency conversion field for a long time
Promote.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this reason, this reality
It is to propose a kind of high-voltage driving circuit of intelligent power module with first new purpose, when supply voltage is unstable,
Quickly released to the residual charge of load-side by corresponding charge-discharge circuit, so as to effectively prevent residual charge to intelligence
The impact that energy power module and other electric appliances are brought, greatly improves the safety and reliability of intelligent power module, right
In popularizing with positive effect for intelligent power module.
Second purpose of the utility model is to propose a kind of intelligent power module.
To achieve the above object, the utility model first aspect proposes a kind of high drive electricity of intelligent power module
Road, including the first to the 6th drive circuit and the first to the 6th charge-discharge circuit, the electricity of the described first to the 6th charge-discharge circuit
Line structure is identical and each charge-discharge circuit includes the first signal input part, the first signal output part, power supply anode and confession
Electric power supply negative terminal, first signal input part is corresponded to be connected with the signal output part of the described first to the 6th drive circuit, institute
It is low with the control terminal and U, V, W phase of U, V, W phase high-voltage circuit breaker pipe of intelligent power module to state the first signal output part correspondence
The control terminal of pressure power switch pipe is connected, and the power supply anode corresponds to and the higher-pressure region of intelligent power module power supply electricity
Source anode/low-pressure area power supply anode is connected, and the power supply negative terminal corresponds to the higher-pressure region with the intelligent power module
Power supply negative terminal/low-pressure area power supply negative terminal is connected, wherein, when the low-pressure area power supply/higher-pressure region power supply
When power supply is normal, the charge-discharge circuit exports the drive signal that corresponding drive circuit exports to corresponding power switch pipe
Control terminal, to control the power switch pipe ON/OFF；When the low-pressure area power supply/higher-pressure region power supply electricity
When source is abnormal, the charge-discharge circuit stops exporting the drive signal that corresponding drive circuit exports to corresponding power switch
The control terminal of pipe, and control first signal output part to be in low resistive state, released with the residual charge to load-side.
The high-voltage driving circuit of intelligent power module according to the present utility model, by each drive circuit with it is corresponding
Charge-discharge circuit is added between power switch pipe, with low-pressure area power supply/higher-pressure region power supply exception, i.e. intelligent power
When the supply voltage of module is abnormal, stop exporting the drive signal that corresponding drive circuit exports to right by charge-discharge circuit
The control terminal for the power switch pipe answered, and control the first signal output part of charge-discharge circuit to be in low resistive state, with to load
The residual charge of side is released, and is rushed so as to effectively prevent residual charge to what intelligent power module and other electric appliances were brought
Hit, greatly improve the safety and reliability of intelligent power module, for popularizing with product for intelligent power module
Pole acts on.
Specifically, when the first signal output part of the charge-discharge circuit corresponds to U, V, W with the intelligent power module
When the control terminal of phase high-voltage circuit breaker pipe is connected, power supply anode and the intelligent power module of the charge-discharge circuit
Higher-pressure region power supply anode is connected, and the power supply negative terminal of the charge-discharge circuit and the higher-pressure region of the intelligent power module supply
Electric power supply negative terminal is connected；When the first signal output part of the charge-discharge circuit corresponds to U, V, W with the intelligent power module
When the control terminal of phase low-voltage power switch pipe is connected, power supply anode and the intelligent power module of the charge-discharge circuit
Low-pressure area power supply anode is connected, and the power supply negative terminal of the charge-discharge circuit and the low-pressure area of the intelligent power module supply
Electric power supply negative terminal is connected.
Specifically, each charge-discharge circuit includes：First comparison circuit, the first input of first comparison circuit
End is connected with the power supply anode of the charge-discharge circuit, the second input terminal and the discharge and recharge of first comparison circuit
The power supply negative terminal of circuit is connected；First controllable switch, first end and the charge-discharge circuit of first controllable switch
Power supply anode be connected, the control terminal of first controllable switch is connected with the output terminal of first comparison circuit；The
Two comparison circuits, the first input end of second comparison circuit are connected with the power supply anode of the charge-discharge circuit, institute
The second input terminal for stating the second comparison circuit is connected with the power supply negative terminal of the charge-discharge circuit, wherein, second ratio
Voltage compared with circuit compares threshold value and compares threshold value more than the voltage of first comparison circuit；Second controllable switch, described second
The first end of controllable switch is connected with the power supply anode of the charge-discharge circuit, the control terminal of second controllable switch with
The output terminal of second comparison circuit is connected；Energy-storage units, one end of the energy-storage units and second controllable switch
Second end is connected, and the other end of the energy-storage units is connected with the power supply negative terminal of the charge-discharge circuit；3rd controllable opens
Close, the first end of the 3rd controllable switch is connected with the first signal input part of the charge-discharge circuit, and the described 3rd is controllable
The second end of switch is connected with one end of the energy-storage units, and the control terminal of the 3rd controllable switch and first comparison are electric
The output terminal on road is connected；First switch pipe and second switch pipe, the source electrode of the first switch pipe and first controllable switch
Second end be connected, the grid of the first switch pipe is connected with the first end of the 3rd controllable switch, the second switch
The source electrode of pipe is connected with the power supply negative terminal of the charge-discharge circuit, the grid of the second switch pipe and the described 3rd controllable
3rd end of switch is connected, and the drain electrode of the first switch pipe and the drain electrode of the second switch pipe are electric with the discharge and recharge respectively
First signal output part on road is connected.
Further, when the low-pressure area power supply/higher-pressure region power supply is normal, first comparison is electric
Road exports the first comparison signal to first controllable switch and the 3rd controllable switch, so that first controllable switch
First end is connected and makes the first end of the 3rd controllable switch to be connected with the 3rd end with second end, and first signal is defeated
The drive signal for entering end is exported to first signal output part by the first switch pipe and the second switch pipe, and
Second comparison circuit exports the second comparison signal to second controllable switch, so that the first of second controllable switch
End is connected with second end, to charge to the energy-storage units；When the low-pressure area power supply/higher-pressure region power supply
When abnormal, second comparison circuit exports the 3rd comparison signal to second controllable switch, so that described second controllable opens
The first end of pass is disconnected with second end, to stop charging to the energy-storage units, and first comparison circuit output the 4th
Comparison signal is to first controllable switch and the 3rd controllable switch, so that the first end of first controllable switch and the
Two ends disconnect and the second end of the 3rd controllable switch is connected with the 3rd end, the driving letter of first signal input part
Number stop output to first signal output part, while the residual charge of first signal output part is opened by described second
Pipe is closed to release.
Specifically, first comparison circuit includes：First comparator, the positive input terminal of the first comparator with it is described
The first input end of first comparison circuit is connected, the output terminal of the output terminal of the first comparator and first comparison circuit
It is connected；First voltage source, the cathode of the first voltage source are connected with the negative input end of the first comparator, first electricity
The anode of potential source is connected with the second input terminal of first comparison circuit.
Specifically, second comparison circuit includes：Second comparator, the positive input terminal of second comparator with it is described
The first input end of second comparison circuit is connected, the output terminal of the output terminal of second comparator and second comparison circuit
It is connected；The second voltage source, the cathode of the second voltage source are connected with the negative input end of second comparator, second electricity
The anode of potential source is connected with the second input terminal of second comparison circuit, wherein, the voltage ratio that the second voltage source provides
The voltage for being more than first voltage source offer compared with threshold value compares threshold value.
Specifically, the energy-storage units include：Capacitance, one end of the capacitance are connected with one end of the energy-storage units,
The other end of the capacitance is connected with the other end of the energy-storage units.
Further, each charge-discharge circuit further includes：Amplifying circuit, the first end of the amplifying circuit with it is described
First signal input part of charge-discharge circuit is connected, the second end of the amplifying circuit and the first end of the 3rd controllable switch
It is connected, the amplifying circuit is used to be amplified the drive signal of first signal input part.
Further, the amplifying circuit includes：First NOT gate, input terminal and the amplifying circuit of first NOT gate
First end be connected；Second NOT gate, the input terminal of second NOT gate are connected with the output terminal of first NOT gate, and described second
The output terminal of NOT gate is connected with the second end of the amplifying circuit.
To achieve the above object, the utility model second aspect proposes a kind of intelligent power module, it includes above-mentioned
High-voltage driving circuit.
The intelligent power module of the utility model, by above-mentioned high-voltage driving circuit, when supply voltage is unstable, leads to
Cross corresponding charge-discharge circuit quickly to release to the residual charge of load-side, so as to effectively prevent residual charge to intelligence
The impact that power module and other electric appliances are brought, greatly improves the safety and reliability of intelligent power module, for
Intelligent power module is popularized with positive effect.
Brief description of the drawings
Fig. 1 is the block diagram being controlled in correlation technique by intelligent power module to motor；
Fig. 2 is the structure diagram of intelligent power module in correlation technique；
Fig. 3 is illustrated according to the square frame of the high-voltage driving circuit of the intelligent power module of the utility model one embodiment
Figure；
Fig. 4 is the circuit diagram according to the high-voltage driving circuit of the intelligent power module of the utility model one embodiment；
Fig. 5 is the circuit diagram according to the high-voltage driving circuit of the intelligent power module of the utility model another embodiment.
Embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
With reference to the accompanying drawings come describe according to the utility model embodiment propose intelligent power module high drive electricity
Road and the intelligent power module with the high-voltage driving circuit.
Fig. 3 is the structural representation according to the high-voltage driving circuit of the intelligent power module of the utility model one embodiment
Figure.As shown in figure 3, the high-voltage driving circuit 100 of the intelligent power module includes：First to the 6th drive circuit (is respectively the
One drive circuit 11, the second drive circuit 12 ..., the 6th drive circuit 16) and the first to the 6th charge-discharge circuit (be respectively the
One charge-discharge circuit 21, the second charge-discharge circuit 22 ..., the 6th charge-discharge circuit 26).The electricity of first to the 6th charge-discharge circuit
Line structure is identical and each charge-discharge circuit includes the first signal input part, the first signal output part, power supply anode and confession
Electric power supply negative terminal, the first signal input part is corresponded to be connected with the signal output part of the first to the 6th drive circuit, and the first signal is defeated
It (is respectively the first power switch pipe Q1, the second power that outlet, which is corresponded to U, V, W phase high-voltage circuit breaker pipe of intelligent power module,
Switching tube Q2 and the 3rd power switch pipe Q3) control terminal and U, V, W phase low-voltage power switch pipe (be respectively the 4th power switch
Pipe Q4, the 5th power switch pipe Q5 and the 6th power switch pipe Q6) control terminal be connected, power supply anode corresponds to and intelligent work(
Higher-pressure region power supply anode/low-pressure area power supply anode of rate module is connected, power supply negative terminal correspondence and intelligent power
Higher-pressure region power supply negative terminal/low-pressure area power supply negative terminal of module is connected.
When low-pressure area power supply/higher-pressure region power supply is normal, charge-discharge circuit exports corresponding drive circuit
Drive signal export to the control terminal of corresponding power switch pipe, to control power switch pipe ON/OFF；When low-pressure area supplies
When power supply/higher-pressure region power supply is abnormal, the drive signal that charge-discharge circuit stops exporting corresponding drive circuit exports
To the control terminal of corresponding power switch pipe, and the first signal output part is controlled to be in low resistive state, with the residue to load-side
Electric charge is released.
Wherein, when the first signal output part of charge-discharge circuit corresponds to U, V, W phase high-voltage power with intelligent power module
When the control terminal of switching tube is connected, the power supply anode of the charge-discharge circuit and the higher-pressure region power supply of intelligent power module
Anode is connected, and the power supply negative terminal of the charge-discharge circuit is connected with the higher-pressure region power supply negative terminal of intelligent power module；When
First signal output part of charge-discharge circuit corresponds to the control terminal phase with U, V, W phase low-voltage power switch pipe of intelligent power module
Lian Shi, the power supply anode of the charge-discharge circuit are connected with the low-pressure area power supply anode VDD of intelligent power module, this is filled
The power supply negative terminal of discharge circuit is connected with the low-pressure area power supply negative terminal COM of intelligent power module.
Specifically, as shown in figure 3, low-pressure area power supplies of the power positive end VCC of high-voltage driving circuit 100 as IPM
The low-pressure area power supply negative terminal COM of anode VDD (VDD is generally 15V), power supply negative terminal GND as IPM.High-voltage driving circuit
100 first input end HIN1 is as bridge arm input terminal UHIN in the U phases of IPM, and the second input terminal HIN2 is as in the V phases of IPM
Bridge arm input terminal VHIN, the 3rd input terminal HIN3 are as bridge arm input terminal WHIN in the W phases of IPM, the 4th input terminal LIN1 conducts
V phase lower bridge arm input terminal VLINs of the U phase lower bridge arm input terminals ULIN, the 5th input terminal LIN2 of IPM as IPM, the 6th input
Hold W phase lower bridge arm input terminal WLINs of the LIN3 as IPM.
The U phases higher-pressure region power supply anode VB1 of high-voltage driving circuit 100 is connected with one end of the first capacitance C1, and makees
For the U phases higher-pressure region power supply anode UVB of IPM；The other end of U phases higher-pressure region power supply negative terminal VS1 and the first capacitance C1
It is connected, and as the U phases higher-pressure region power supply negative terminal UVS of IPM；V phases higher-pressure region power supply anode VB2 and the second capacitance C2
One end be connected, and as the V phases higher-pressure region power supply anode VVB of IPM；V phases higher-pressure region power supply negative terminal VS2 and second
The other end of capacitance C2 is connected, and as the V phases higher-pressure region power supply negative terminal VVS of IPM；W phases higher-pressure region power supply anode
VB3 is connected with one end of the 3rd capacitance C3, and as the W phases higher-pressure region power supply anode WVB of IPM；W phases higher-pressure region power supply electricity
Source negative terminal VS3 is connected with the other end of the 3rd capacitance C3, and as the W phases higher-pressure region power supply negative terminal WVS of IPM.
The HO1 ends of high-voltage driving circuit 100 are connected with the grid of the first power switch pipe Q1, the first power switch pipe Q1's
Collector connects the ceiling voltage point P ends (generally meeting 300V) of IPM, and the emitter of the first power switch pipe Q1 connects the UVS ends of IPM；
HO2 ends are connected with the grid of the second power switch pipe Q2, and the collector of the second power switch pipe Q2 meets the ceiling voltage point P of IPM
End, the emitter of the second power switch pipe Q2 connect the VVS ends of IPM；HO3 ends are connected with the grid of the 3rd power switch pipe Q3, the
The collector of three power switch pipe Q3 connects the ceiling voltage point P ends of IPM, and the emitter of the 3rd power switch pipe Q3 meets the WVS of IPM
End；LO1 ends are connected with the grid of the 4th power switch pipe Q4, and the collector of the 4th power switch pipe Q4 connects the UVS ends of IPM, the
The emitter of four power switch pipe Q4 connects the U phase low reference voltages end UN ends of IPM；LO2 ends and the grid of the 5th power switch pipe Q5
Extremely it is connected, the collector of the 5th power switch pipe Q5 connects the VVS ends of IPM, and the emitter of the 5th power switch pipe Q5 meets the V of IPM
Phase low reference voltage end VN ends；LO3 ends are connected with the grid of the 6th power switch pipe Q6, the collector of the 6th power switch pipe Q6
The WVS ends of IPM are connect, the emitter of the 6th power switch pipe Q6 connects the W phase low reference voltages end WN ends of IPM.
For high-voltage driving circuit 100, the low-pressure area power supply of VCC and the first drive circuit 11 (UH drive circuits) is just
End, the low-pressure area power supply anode of the second drive circuit 12 (VH drive circuits), the 3rd drive circuit 13 (WH drive circuits)
Low-pressure area power supply anode, the 4th drive circuit 14 (UL drive circuits) low-pressure area power supply anode, the 5th driving
The low-pressure area power supply of the low-pressure area power supply anode of circuit 15 (VL drive circuits), the 6th drive circuit 16 (WL drive circuits)
Power positive end, the power supply anode of the 4th charge-discharge circuit 24 (UL charge-discharge circuits), 25 (the VL charge and discharges of the 5th charge-discharge circuit
Circuit) power supply anode and the power supply anode of the 6th charge-discharge circuit 26 (WL charge-discharge circuits) be connected.
The low-pressure area power supply electricity of the low-pressure area power supply negative terminal of GND and the first drive circuit 11, the second drive circuit 12
Source negative terminal, the low-pressure area power supply negative terminal of the 3rd drive circuit 13, the low-pressure area power supply negative terminal of the 4th drive circuit 14,
The low-pressure area power supply negative terminal of 5th drive circuit 15, the low-pressure area power supply negative terminal of the 6th drive circuit 16, the 4th fill
The confession of the power supply negative terminal of discharge circuit 24, the power supply negative terminal of the 5th charge-discharge circuit 25 and the 6th charge-discharge circuit 26
Electric power supply negative terminal is connected.
The higher-pressure region power supply anode of VB1 and the first drive circuit 11,21 (UH discharge and recharges electricity of the first charge-discharge circuit
Road) power supply anode be connected；Higher-pressure region power supply anode, the second charge-discharge circuit of VB2 and the second drive circuit 12
The power supply anode of 22 (VH charge-discharge circuits) is connected；The higher-pressure region power supply anode of VB3 and the 3rd drive circuit 13,
The power supply anode of three charge-discharge circuits 23 (WH charge-discharge circuits) is connected.The higher-pressure region of VS1 and the first drive circuit 11 supplies
Electric power supply negative terminal, the power supply negative terminal of the first charge-discharge circuit 21 are connected；The higher-pressure region of VS2 and the second drive circuit 12 powers
Power supply negative terminal, the power supply negative terminal of the second charge-discharge circuit 22 are connected；The higher-pressure region of VS3 and the 3rd drive circuit 13 power supply electricity
Source negative terminal, the power supply negative terminal of the 3rd charge-discharge circuit 23 are connected.
HIN1 is connected with the signal input part of the first drive circuit 11, the signal output part and first of the first drive circuit 11
First signal input part of charge-discharge circuit 21 is connected, and the first signal output part of the first charge-discharge circuit 21 is connected with HO1；
HIN2 is connected with the signal input part of the second drive circuit 12, the signal output part of the second drive circuit 12 and the second discharge and recharge electricity
First signal input part on road 22 is connected, and the first signal output part of the second charge-discharge circuit 22 is connected with HO2；HIN3 and the 3rd
The signal input part of drive circuit 13 is connected, the signal output part of the 3rd drive circuit 13 and the first of the 3rd charge-discharge circuit 23
Signal input part is connected, and the first signal output part of the 3rd charge-discharge circuit 23 is connected with HO3；LIN1 and the 4th drive circuit 14
Signal input part be connected, the signal output part of the 4th drive circuit 14 and the first signal input part of the 4th charge-discharge circuit 24
It is connected, the first signal output part of the 4th charge-discharge circuit 24 is connected with LO1；The signal of LIN2 and the 5th drive circuit 15 inputs
End is connected, and the signal output part of the 5th drive circuit 15 is connected with the first signal input part of the 5th charge-discharge circuit 25, and the 5th
First signal output part of charge-discharge circuit 25 is connected with LO2；LIN3 is connected with the signal input part of the 6th drive circuit 16, the
The signal output part of six drive circuits 16 is connected with the first signal input part of the 6th charge-discharge circuit 26, the 6th charge-discharge circuit
26 the first signal output part is connected with LO3.
When VCC voltages are the voltage for being higher than a certain particular value VCCTH, i.e. low-pressure area power supply is normal, low
In the case of pressure area supply voltage is normal, it is also at just for the corresponding higher-pressure region power supply of the first to the 3rd charge-discharge circuit
Normal state, at this time charge-discharge circuit the drive signal that corresponding drive circuit exports is exported to the control of corresponding power switch pipe
End processed, it is specific as follows to control power switch pipe ON/OFF：
When UHIN is high level, ULIN is necessary for low level, the first drive circuit 11 output high level, and makes first to fill
First signal output part the output phase of discharge circuit 21 for VS1 high level to HO1, to drive the first power switch pipe Q1 to lead
Logical, 14 the output phase of the 4th drive circuit is for the low level of COM, the 4th power switch pipe Q4 shut-offs；When UHIN is low level,
First drive circuit 11 exports low level, and makes the first signal output part the output phase of the first charge-discharge circuit 21 for VS1's
Low level to HO1, the first power switch pipe Q1 turn off.When VHIN is high level, VLIN is necessary for low level, the second driving electricity
Road 12 exports high level, and make the first signal output part the output phase of the second charge-discharge circuit 22 for VS2 high level extremely
HO2, to drive the second power switch pipe Q2 conductings, 15 the output phase of the 5th drive circuit for the low level of COM, open by the 5th power
Close pipe Q5 shut-offs；When VHIN is low level, the second drive circuit 12 output low level, and make the of the second charge-discharge circuit 22
One signal output part the output phase for VS2 low level to HO2, the second power switch pipe Q2 turn off.When WHIN is high level,
WLIN is necessary for low level, the 3rd drive circuit 13 output high level, and makes the first signal output of the 3rd charge-discharge circuit 23
Hold the output phase for the high level of VS3 to HO3, to drive the 3rd power switch pipe Q3 conductings, 16 the output phase of the 6th drive circuit
For the low level of COM, the 6th power switch pipe Q6 shut-offs；When WHIN is low level, the 3rd drive circuit 13 exports low electricity
It is flat, and the first signal output part the output phase of the 3rd charge-discharge circuit 23 is opened for low level to HO3, the 3rd power of VS3
Close pipe Q3 shut-offs.
When ULIN is high level, UHIN is necessary for low level, the 4th drive circuit 14 output high level, and makes the 4th to fill
First signal output part the output phase of discharge circuit 24 for COM high level to LO1, to drive the 4th power switch pipe Q4 to lead
Logical, 11 the output phase of the first drive circuit is for the low level of VS1, the first power switch pipe Q1 shut-offs；When ULIN is low level,
4th drive circuit 14 exports low level, and makes the first signal output part the output phase of the 4th charge-discharge circuit 24 for COM's
Low level to LO1, the 4th power switch pipe Q4 turn off.When VLIN is high level, VHIN is necessary for low level, the 5th driving electricity
Road 15 exports high level, and make the first signal output part the output phase of the 5th charge-discharge circuit 25 for COM high level extremely
LO2, to drive the 5th power switch pipe Q5 conductings, 12 the output phase of the second drive circuit for the low level of VS2, open by the second power
Close pipe Q2 shut-offs；When VLIN is low level, the 5th drive circuit 15 output low level, and make the of the 5th charge-discharge circuit 25
One signal output part the output phase for COM low level to LO2, the 5th power switch pipe Q5 turn off.When WLIN is high level,
WHIN is necessary for low level, the 6th drive circuit 16 output high level, and makes the first signal output of the 6th charge-discharge circuit 26
Hold the output phase for the high level of COM to LO3, to drive the 6th power switch pipe Q6 conductings, 13 the output phase of the 3rd drive circuit
For the low level of VS3, the 3rd power switch pipe Q3 shut-offs；When WLIN is low level, the 6th drive circuit 16 exports low electricity
It is flat, and the first signal output part the output phase of the 6th charge-discharge circuit 26 is opened for low level to LO3, the 6th power of COM
Close pipe Q6 shut-offs.
When VCC voltages are the voltage for being less than a certain particular value VCCTH, i.e. low-pressure area power supply/higher-pressure region powers
During abnormity of power supply, charge-discharge circuit stops exporting the drive signal that corresponding drive circuit exports to corresponding power switch pipe
Control terminal, no matter UHIN, VHIN, WHIN, ULIN, VLIN, WLIN are high level or low level at this time, HO1, HO2, HO3,
LO1, LO2, LO3 are held at low level, while charge-discharge circuit the first signal output part of control is in low resistive state and (here may be used
To be interpreted as low level state), i.e., HO1, HO2, HO3, LO1, LO2, LO3 are in low resistive state, to power off the one of initial stage in VCC
In the section time, release to the residual charge of load-side.
Therefore, according to the high-voltage driving circuit of the intelligent power module of the utility model embodiment, in VCC shutdown transients,
Its output terminal is set to produce a low resistive state, compared with high-impedance state after traditional power-off, Neng Gouxun by charge-discharge circuit
Speed releases the residual charge of load-side, so as to effectively avoid residual charge from existing to intelligent power module and other electricity consumptions
The impact that device is brought, greatly improves the reliability of intelligent power module, ensure that the safety of circuit system, for intelligent work(
Rate module has popularized positive effect.
The charge-discharge circuit in high-voltage driving circuit is described in detail with reference to specific example.
One embodiment according to the present utility model, as shown in figure 4, each charge-discharge circuit includes：First comparison circuit
U1, the first controllable switch K1, the second comparison circuit U2, the second controllable switch K2, energy-storage units C, the 3rd controllable switch K3, first
Switching tube M1 and second switch pipe M2.Wherein, the power supply of the first input end of the first comparison circuit U1 and charge-discharge circuit
Anode VB is connected, and the second input terminal of the first comparison circuit U1 is connected with the power supply negative terminal VS of charge-discharge circuit；First can
The first end of control switch K1 is connected with the power supply anode VB of charge-discharge circuit, the control terminal and first of the first controllable switch K1
The output terminal of comparison circuit U1 is connected；The first input end of second comparison circuit U2 and the power supply anode VB of charge-discharge circuit
It is connected, the second input terminal of the second comparison circuit U2 is connected with the power supply negative terminal VS of charge-discharge circuit；Second controllable switch
The first end of K2 is connected with the power supply anode VB of charge-discharge circuit, and the control terminal of the second controllable switch K2 and the second comparison are electric
The output terminal of road U2 is connected；One end of energy-storage units C is connected with the second end of the second controllable switch K2, and energy-storage units C's is another
End is connected with the power supply negative terminal VS of charge-discharge circuit；The first end of 3rd controllable switch K3 and the first letter of charge-discharge circuit
Number input terminal IN is connected, and the second end of the 3rd controllable switch K3 is connected with one end of energy-storage units C, the control of the 3rd controllable switch K3
End processed is connected with the output terminal of the first comparison circuit U1；The second end phase of the source electrode of first switch pipe M1 and the first controllable switch K1
Even, the grid of first switch pipe M1 is connected with the first end of the 3rd controllable switch K3, the source electrode of second switch pipe M2 and discharge and recharge
The power supply negative terminal VS of circuit is connected, and the grid of second switch pipe M2 is connected with the 3rd end of the 3rd controllable switch K3, and first
The drain electrode of switching tube M1 and the drain electrode of second switch pipe M2 are connected with the first signal output part OUT of charge-discharge circuit respectively.
Wherein, when low-pressure area power supply/higher-pressure region power supply is normal, the first comparison circuit U1 outputs first are compared
Signal is to the first controllable switch K1 and the 3rd controllable switch K3, so that the first end of the first controllable switch K1 is connected with second end
With the first end of the 3rd controllable switch K3 is connected with the 3rd end, the drive signal of the first signal input part IN is opened by first
Close pipe M1 and second switch pipe M2 to export to the first signal output part OUT, and letter is compared in the second comparison circuit U2 outputs second
Number to the second controllable switch K2, so that the first end of the second controllable switch K2 is connected with second end, to be filled to energy-storage units C
Electricity；When low-pressure area power supply/higher-pressure region power supply is abnormal, the second comparison circuit U2 exports the 3rd comparison signal to second
Controllable switch K2, so that the first end of the second controllable switch K2 is disconnected with second end, to stop charging to energy-storage units C, and
First comparison circuit U1 exports the 4th comparison signal to the first controllable switch K1 and the 3rd controllable switch K3, so that first controllable opens
The first end for closing K1 disconnects with second end and the second end of the 3rd controllable switch K3 is connected with the 3rd end, the input of the first signal
The drive signal of IN is held to stop output to the first signal output part OUT, while the residual charge of the first signal output part OUT passes through
Second switch pipe M2 releases.
Compare it should be noted that the voltage of the second comparison circuit U2 compares voltage of the threshold value more than the first comparison circuit U1
Threshold value, for example, it can be 6V or the under-voltage protection voltage than intelligent power module that the voltage of the second comparison circuit U2, which compares threshold value,
It is worth the value of low 1~2V；It can be 13V or the supply voltage than intelligent power module that the voltage of first comparison circuit U1, which compares threshold value,
The value of low 1~2V.
Further, as shown in figure 4, the first comparison circuit U1 may include：First comparator P1 and first voltage source V1, the
The positive input terminal of one comparator P1 is connected with the first input end of the first comparison circuit U1, the output terminal of first comparator P1 and
The output terminal of one comparison circuit U1 is connected；The cathode of first voltage source V1 is connected with the negative input end of first comparator U1, and first
The anode of voltage source V1 is connected with the second input terminal of the first comparison circuit U1.Second comparison circuit U2 may include：Second compares
Device P2 and the second voltage source V2, wherein, the first input end phase of the positive input terminal of the second comparator P2 and the second comparison circuit U2
Even, the output terminal of the second comparator P2 is connected with the output terminal of the second comparison circuit U2；The cathode of the second voltage source V2 and second
The negative input end of comparator U2 is connected, and the anode of the second voltage source V2 is connected with the second input terminal of the second comparison circuit U2.Its
In, the voltage of the second voltage source V2 offers compares threshold value and compares threshold value more than the first voltage source V1 voltages provided.
Specifically, since the circuit structure of the first to the 6th charge-discharge circuit is identical, so here with one of them
Illustrated exemplified by charge-discharge circuit structure.
When the voltage between VB and VS is normal, (for the first to the 3rd charge-discharge circuit, the voltage between VB and VS is intelligence
Voltage between the higher-pressure region power supply anode and negative terminal of power module, and the voltage becomes with the voltage between VCC and GND
Change and change；For the 4th to the 6th charge-discharge circuit, the voltage between VB and VS is the low-pressure area power supply of intelligent power module
Voltage between voltage between power positive end and negative terminal, i.e. VCC and GND) when, the voltage of the positive input terminal of first comparator P1
The voltage of the positive input terminal of voltage, the second comparator P2 higher than negative input end is higher than the voltage of negative input end, at this time the first ratio
The first comparison signal (such as high level signal) is exported to the first controllable switch K1 and the 3rd controllable switch K3 compared with device P1, and first is controllable
K1 closures are switched, the first end of the 3rd controllable switch K3 is connected with the 3rd end so that the driving letter of the first signal input part IN
Number exported by first switch pipe M1 and second switch pipe M2, while the second comparator P2 exports the second comparison signal (such as high electricity
Ordinary mail number) start to charge to energy-storage units C to the second controllable switch K2, the second controllable switch K2 closure, VB, make energy storage list
The both ends of first C obtain the pressure drop between VB and VS.
It is that the voltage of the positive input terminal of the second comparator P2 is less than negative input end first when the voltage dip between VB and VS
Voltage, the second comparator P2 output the 3rd comparison signals (such as low level signal) to the second controllable switch K2, second controllable opens
K2 is closed to disconnect, so that the value of the voltage at the both ends of energy-storage units C low 1~2V of voltage between the normal VB1 and VS1 of a ratio, and
Do not decline with the decline of VB.Then original under-voltage protection in intelligent power module is triggered, intelligent power module is stopped work
Make.When the voltage that VB voltages drop to first voltage source V1 offers compares below threshold value, the positive input terminal of first comparator P1
Voltage be less than the voltage of negative input end, first comparator P1 exports the 4th comparison signal (such as low level signal), at this time first
Controllable switch K1 is disconnected, while the second end of the 3rd controllable switch K3 is connected with the 3rd end, energy-storage units C and second switch pipe
The grid of M2 is connected, and the electric charge of energy-storage units C makes it obtain to second switch pipe M2's the gate charges of second switch pipe M2
The high level of source electrode, second switch pipe M2 remain to obtain the opening state of a short time when VB voltages drop to 0, so that
The residual charge of the load of first signal output part OUT connections can be released by second switch pipe M2, effectively prevent
There is the impact brought to intelligent power module etc. in residual charge, improve safety and reliability.
One embodiment according to the present utility model, energy-storage units C may include capacitance, one end and the energy-storage units C of capacitance
One end be connected, the other end of capacitance is connected with the other end of energy-storage units C.When energy-storage units C is capacitance, its capacitance can lead to
In the following manner is crossed to make choice：For the high-voltage driving circuit 100 that a driving force is+500mA/-500mA, the appearance of capacitance
Value generally may be configured as 1nF or so, i.e., driving second switch pipe M2 enough obtains the opening state of short time；According to technique not
Together, the breadth length ratio of first switch pipe M1 and second switch pipe M2 have difference.
Further, one embodiment according to the present utility model, as shown in figure 5, each charge-discharge circuit further includes：Put
Big circuit U 3, the first end of amplifying circuit U3 are connected with the first signal input part IN of charge-discharge circuit, and the of amplifying circuit U3
Two ends are connected with the first end of the 3rd controllable switch K3, amplifying circuit U3 be used for the drive signal of the first signal input part IN into
Row amplification.
Further, as shown in figure 5, amplifying circuit U3 may include：First NOT gate NOT1 and the second NOT gate NOT2, first is non-
The input terminal of door NOT1 is connected with the first end of amplifying circuit U3；The input terminal of second NOT gate NOT2 is defeated with the first NOT gate NOT1's
Outlet is connected, and the output terminal of the second NOT gate NOT2 is connected with the second end of amplifying circuit, non-by the first NOT gate NOT1 and second
Door NOT2 is realized carries out two-stage amplification to the drive signal of the first signal input part.Wherein, the ruler of the metal-oxide-semiconductor of the second NOT gate NOT2
It is very little for the 1/2 of first switch pipe M1 and second switch pipe M2, the size of the metal-oxide-semiconductor of the first NOT gate NOT1 is the second NOT gate NOT2 rulers
Very little 1/2.
In conclusion according to the high-voltage driving circuit of the intelligent power module of the utility model embodiment, by each
Charge-discharge circuit is added between drive circuit and corresponding power switch pipe, with low-pressure area power supply/higher-pressure region power supply electricity
Source is abnormal, i.e., when the supply voltage of intelligent power module is abnormal, stops exporting corresponding drive circuit by charge-discharge circuit
Drive signal export to the control terminal of corresponding power switch pipe, and control the first signal output part of charge-discharge circuit to be in
Low resistive state, is released with the residual charge to load-side, thus effectively prevent residual charge to intelligent power module with
And the impact that other electric appliances are brought, the safety and reliability of intelligent power module is greatly improved, for intelligent power mould
Block is popularized with positive effect.
In addition, the embodiment of the utility model also proposed a kind of intelligent power module, it includes above-mentioned high drive
Circuit.
The intelligent power module of the utility model embodiment, it is unstable in supply voltage by above-mentioned high-voltage driving circuit
Periodically, quickly released to the residual charge of load-side by corresponding charge-discharge circuit, so as to effectively prevent residual electricity
The impact that lotus brings intelligent power module and other electric appliances, greatly improves the security of intelligent power module and reliable
Property, for popularizing with positive effect for intelligent power module.
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model
System.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the utility model, " multiple " are meant that at least two, such as two
It is a, three etc., unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
Combine in an appropriate manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this area
Technical staff can by the different embodiments or example described in this specification and different embodiments or exemplary feature into
Row combines and combination.
Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to the limitation to the utility model is interpreted as, those of ordinary skill in the art are in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (10)
1. a kind of high-voltage driving circuit of intelligent power module, it is characterised in that including the first to the 6th drive circuit and first
To the 6th charge-discharge circuit, the circuit structure of the described first to the 6th charge-discharge circuit is identical and each charge-discharge circuit includes the
One signal input part, the first signal output part, power supply anode and power supply negative terminal, first signal input part correspond to
It is connected with the signal output part of the described first to the 6th drive circuit, the first signal output part correspondence and intelligent power module
The control terminal of U, V, W phase high-voltage circuit breaker pipe be connected with the control terminal of U, V, W phase low-voltage power switch pipe, the power supply electricity
Source anode is corresponded to be connected with higher-pressure region power supply anode/low-pressure area power supply anode of the intelligent power module, described
Power supply negative terminal corresponds to higher-pressure region power supply negative terminal/low-pressure area power supply negative terminal phase with the intelligent power module
Connect, wherein,
When the low-pressure area power supply/higher-pressure region power supply is normal, the charge-discharge circuit is by corresponding driving
The drive signal of circuit output is exported to the control terminal of corresponding power switch pipe, to control the power switch pipe conducting/pass
It is disconnected；
When the low-pressure area power supply/higher-pressure region power supply is abnormal, the charge-discharge circuit stops will be corresponding
The drive signal of drive circuit output is exported to the control terminal of corresponding power switch pipe, and controls first signal output part
In low resistive state, released with the residual charge to load-side.
2. the high-voltage driving circuit of intelligent power module as claimed in claim 1, it is characterised in that
Opened when the first signal output part of the charge-discharge circuit is corresponded to U, V, W phase high-voltage power of the intelligent power module
When the control terminal of pass pipe is connected, the power supply anode of the charge-discharge circuit and the higher-pressure region power supply electricity of the intelligent power module
Source anode is connected, the higher-pressure region power supply negative terminal phase of the power supply negative terminal of the charge-discharge circuit and the intelligent power module
Even；
Opened when the first signal output part of the charge-discharge circuit is corresponded to U, V, W phase low pressure and low power of the intelligent power module
When the control terminal of pass pipe is connected, the power supply anode of the charge-discharge circuit and the low-pressure area power supply electricity of the intelligent power module
Source anode is connected, the low-pressure area power supply negative terminal phase of the power supply negative terminal of the charge-discharge circuit and the intelligent power module
Even.
3. the high-voltage driving circuit of intelligent power module as claimed in claim 2, it is characterised in that each discharge and recharge electricity
Road includes：
First comparison circuit, the first input end of first comparison circuit and the power supply anode phase of the charge-discharge circuit
Even, the second input terminal of first comparison circuit is connected with the power supply negative terminal of the charge-discharge circuit；
First controllable switch, the first end of first controllable switch are connected with the power supply anode of the charge-discharge circuit,
The control terminal of first controllable switch is connected with the output terminal of first comparison circuit；
Second comparison circuit, the first input end of second comparison circuit and the power supply anode phase of the charge-discharge circuit
Even, the second input terminal of second comparison circuit is connected with the power supply negative terminal of the charge-discharge circuit, wherein, described the
The voltage of two comparison circuits compares threshold value and compares threshold value more than the voltage of first comparison circuit；
Second controllable switch, the first end of second controllable switch are connected with the power supply anode of the charge-discharge circuit,
The control terminal of second controllable switch is connected with the output terminal of second comparison circuit；
Energy-storage units, one end of the energy-storage units are connected with the second end of second controllable switch, the energy-storage units
The other end is connected with the power supply negative terminal of the charge-discharge circuit；
3rd controllable switch, the first end of the 3rd controllable switch and the first signal input part phase of the charge-discharge circuit
Even, the second end of the 3rd controllable switch is connected with one end of the energy-storage units, the control terminal of the 3rd controllable switch
It is connected with the output terminal of first comparison circuit；
First switch pipe and second switch pipe, the second end phase of the source electrode of the first switch pipe and first controllable switch
Even, the grid of the first switch pipe is connected with the first end of the 3rd controllable switch, the source electrode of the second switch pipe and
The power supply negative terminal of the charge-discharge circuit is connected, the grid of the second switch pipe and the 3rd of the 3rd controllable switch
End is connected, and the drain electrode of the first switch pipe and the drain electrode of the second switch pipe are believed with the first of the charge-discharge circuit respectively
Number output terminal is connected.
4. the high-voltage driving circuit of intelligent power module as claimed in claim 3, it is characterised in that
When the low-pressure area power supply/higher-pressure region power supply is normal, the ratio of the first comparison circuit output first
Compared with signal to first controllable switch and the 3rd controllable switch, so that the first end and second of first controllable switch
End is connected and makes the first end of the 3rd controllable switch to be connected with the 3rd end, the driving letter of first signal input part
Number exported by the first switch pipe and the second switch pipe to first signal output part, and described second compares
The second comparison signal of circuit output is to second controllable switch, so that the first end of second controllable switch and second end phase
Connection, to charge to the energy-storage units；
When the low-pressure area power supply/higher-pressure region power supply is abnormal, the ratio of the second comparison circuit output the 3rd
Compared with signal to second controllable switch, so that the first end of second controllable switch is disconnected with second end, to stop to institute
Energy-storage units charging is stated, and first comparison circuit exports the 4th comparison signal to first controllable switch and described the
Three controllable switches, so that the first end of first controllable switch and second end disconnect and make the second of the 3rd controllable switch
End is connected with the 3rd end, and the drive signal of first signal input part stops exporting to first signal output part, together
The residual charge of the first signal output parts of Shi Suoshu is released by the second switch pipe.
5. the high-voltage driving circuit of intelligent power module as claimed in claim 3, it is characterised in that first comparison circuit
Including：
First comparator, the positive input terminal of the first comparator are connected with the first input end of first comparison circuit, institute
The output terminal for stating first comparator is connected with the output terminal of first comparison circuit；
First voltage source, the cathode of the first voltage source are connected with the negative input end of the first comparator, first electricity
The anode of potential source is connected with the second input terminal of first comparison circuit.
6. the high-voltage driving circuit of intelligent power module as claimed in claim 5, it is characterised in that second comparison circuit
Including：
Second comparator, the positive input terminal of second comparator are connected with the first input end of second comparison circuit, institute
The output terminal for stating the second comparator is connected with the output terminal of second comparison circuit；
The second voltage source, the cathode of the second voltage source are connected with the negative input end of second comparator, second electricity
The anode of potential source is connected with the second input terminal of second comparison circuit, wherein, the voltage ratio that the second voltage source provides
The voltage for being more than first voltage source offer compared with threshold value compares threshold value.
7. the high-voltage driving circuit of intelligent power module as claimed in claim 3, it is characterised in that the energy-storage units bag
Include：Capacitance, one end of the capacitance are connected with one end of the energy-storage units, the other end of the capacitance and the energy-storage units
The other end be connected.
8. the high-voltage driving circuit of the intelligent power module as any one of claim 3-7, it is characterised in that described every
A charge-discharge circuit further includes：
Amplifying circuit, the first end of the amplifying circuit is connected with the first signal input part of the charge-discharge circuit, described to put
The second end of big circuit is connected with the first end of the 3rd controllable switch, and the amplifying circuit is used for defeated to first signal
The drive signal for entering end is amplified.
9. the high-voltage driving circuit of intelligent power module as claimed in claim 8, it is characterised in that the amplifying circuit bag
Include：
First NOT gate, the input terminal of first NOT gate are connected with the first end of the amplifying circuit；
Second NOT gate, the input terminal of second NOT gate are connected with the output terminal of first NOT gate, second NOT gate it is defeated
Outlet is connected with the second end of the amplifying circuit.
10. a kind of intelligent power module, it is characterised in that including high drive as claimed in any one of claims 1-9 wherein electricity
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720946815.8U CN207339638U (en) | 2017-07-31 | 2017-07-31 | Intelligent power module and its high-voltage driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720946815.8U CN207339638U (en) | 2017-07-31 | 2017-07-31 | Intelligent power module and its high-voltage driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207339638U true CN207339638U (en) | 2018-05-08 |
Family
ID=62377666
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720946815.8U Withdrawn - After Issue CN207339638U (en) | 2017-07-31 | 2017-07-31 | Intelligent power module and its high-voltage driving circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276380A (en) * | 2017-07-31 | 2017-10-20 | 广东美的制冷设备有限公司 | SPM and its high-voltage driving circuit |
-
2017
- 2017-07-31 CN CN201720946815.8U patent/CN207339638U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276380A (en) * | 2017-07-31 | 2017-10-20 | 广东美的制冷设备有限公司 | SPM and its high-voltage driving circuit |
| CN107276380B (en) * | 2017-07-31 | 2023-05-26 | 广东美的制冷设备有限公司 | Intelligent power module and high-voltage driving circuit thereof |
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