CN107342753A - Drive Protecting Circuit, integrated circuit, IPM modules and the air conditioner of power switch pipe - Google Patents
Drive Protecting Circuit, integrated circuit, IPM modules and the air conditioner of power switch pipe Download PDFInfo
- Publication number
- CN107342753A CN107342753A CN201710590701.9A CN201710590701A CN107342753A CN 107342753 A CN107342753 A CN 107342753A CN 201710590701 A CN201710590701 A CN 201710590701A CN 107342753 A CN107342753 A CN 107342753A
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- Prior art keywords
- circuit
- power switch
- switch pipe
- drive
- resistance
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0812—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit
- H03K17/08122—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit in field-effect transistor switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0812—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit
- H03K17/08128—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit in composite switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/567—Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
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- Electronic Switches (AREA)
Abstract
The present invention discloses a kind of Drive Protecting Circuit of power switch pipe, integrated circuit, IPM modules and air conditioner.The Drive Protecting Circuit of the power switch pipe, including signal input part, the first protection circuit, signal output part, clamp circuit, switch and gate control circuit；The gate control circuit is used for when detecting that the voltage of drive signal of the signal input part input is more than preset voltage value; the switch on/off is controlled, with the voltage clamping of drive signal that the signal output part is exported by the clamping action of the clamp circuit to a fixed voltage protection value.The Drive Protecting Circuit of the power switch pipe is by the way of active control driving voltage; neatly control clamp circuit access/disengaging and the signal output part; so that exporting the drive signal to the power switch pipe controlled end without departing from the drive voltage range that it allows, the driving reliability to wide-band gap material power switch pipe is improved.
Description
Technical field
The present invention relates to air-conditioner field, more particularly to a kind of Drive Protecting Circuit of power switch pipe, integrated circuit,
IPM modules and air conditioner.
Background technology
At present, the introducing with SiC (carborundum) and GaN (gallium nitride) for the wide-band gap material of representative, has led a new generation
The development of semiconductor devices.Wide-band gap material is because with high temperature resistant, that blocking voltage is high, working frequency is high and on-state loss is small is excellent
Point, and it is widely used in the occasion of high pressure, high temperature, high efficiency and high power density.
But the energy gap and disruptive field intensity due to wide-band gap material are far above the conventional semiconductor material devices such as silicon,
Therefore under the resistance to voltage levels of identical, the parasitic capacitance of wide-band gap material semiconductor devices (such as MOSFET, IGBT) is much smaller than silicon
Semiconductor devices, it is more sensitive to the parasitic parameter of drive circuit.For by taking the MOSFET pipes of wide-band gap material as an example, in order to carry
The switching frequency of high device, reduces the turn-off time, and the design of drive circuit needs to consider negative pressure, and traditional silicon MOSFET drive
Dynamic voltage is generally in 0V~+15V sections；Also, the secure threshold very little of the MOSFET driving voltages of wide-band gap material, its grid
The ability of source electrode tolerance negative pressure is especially poor, and negative pressure spike caused by a vibration is likely to puncture between grid and source electrode
Oxide layer, make its failure.This is larger with silicon MOSFET difference, therefore applies mechanically silicon MOSFET type of drive completely, to drive
Wide-band gap material MOSFET is irrational.
Design both at home and abroad to MOSFET drive circuits at present is mostly that simple resistive driving designs, and driving chip is via outer
Put gate protection resistance to be driven MOSFET, without any design protection inside driving IC.It is especially wide for MOSFET
The protection deficiency of forbidden band material MOSFET grid, when driving voltage is higher, easily causes wide-band gap material MOSFET damage
It is bad, while from the overall angle of circuit, in the design of driving chip and driving chip and MOSFET interconnection circuits also not
The overvoltage protection of drive circuit output end is considered, in this way, easily causing to the MOSFET gate protections deficiency of wide-band gap material
Problem.
The content of the invention
The main object of the present invention be propose a kind of Drive Protecting Circuit of power switch pipe, integrated circuit, IPM modules with
And air conditioner, it is intended to provide effective driving protection for the power switch pipe of wide-band gap material, and optimize power switch pipe
Drive parameter.
The Drive Protecting Circuit of the power switch pipe of the present invention, including for receiving the driving of the driving power switch pipe
The signal input part of signal, the first protection circuit that current-limiting protection is carried out to the drive signal, and by described in after current limliting
The signal output part of drive signal output, the Drive Protecting Circuit also include clamp circuit, switch and gate control circuit；
The clamp circuit is connected through the switch with the signal output part, and the gate control circuit has test side
And control terminal, the test side of the gate control circuit are connected with the signal input part, the control of the gate control circuit
End is connected with the controlled end of the switch；
The gate control circuit, it is pre- for being more than in the voltage for the drive signal for detecting the signal input part input
If during magnitude of voltage, control the switch on/off, with by the clamping action of the clamp circuit by the signal output part
The voltage clamping of the drive signal exported is to a fixed voltage protection value.
Preferably, first protection circuit includes first resistor；The first end of the first resistor and the signal are defeated
Enter end connection, the second end of the first resistor is connected with the signal output part.
Preferably, the clamp circuit includes the first clamp diode, the second clamp diode；The pole of first clamper two
The negative electrode of pipe connects with the switch, the anode of the anode of first clamp diode and second clamp diode connects
Connect, the minus earth of second clamp diode.
Preferably, the gate control circuit includes second resistance, 3rd resistor, first comparator, reference voltage generation
Device；The output end of the first comparator is the control terminal；
The forward end of the first comparator and first end, the first end of 3rd resistor of the second resistance interconnect, institute
The second end for stating second resistance is the test side, and the second end of the second resistance is connected with the signal input part, institute
State the second end ground connection of 3rd resistor；The backward end of the first comparator is connected with the reference voltage generator.
Preferably, the gate control circuit includes the 4th resistance, the 5th resistance, the 6th resistance, the second comparator, the 3rd
Clamp diode；The output end of second comparator is the control terminal；
First end, the first end of the 5th resistance of the forward end of second comparator and the 4th resistance interconnect, institute
The second end for stating the 4th resistance is the test side, and the second end of the 4th resistance is connected with the signal input part, institute
State the second end ground connection of the 5th resistance；First end, the 3rd clamper of the backward end of second comparator and the 6th resistance
The negative electrode interconnection of diode, the second end of the 6th resistance connect for dc source, the anode of the 3rd clamp diode
Ground connection.
The present invention also proposes a kind of integrated circuit, includes the driving protection of drive circuit and described power switch pipe
Circuit；The drive circuit has driving signal output end；
The signal of the driving signal output end of the drive circuit and the Drive Protecting Circuit of the power switch pipe inputs
End connection, the signal output part of the Drive Protecting Circuit of the power switch pipe connect for the controlled end of the power switch pipe.
Preferably, the letter of the driving signal output end of the drive circuit and the Drive Protecting Circuit of the power switch pipe
The second protection circuit is additionally provided between number input；
Second protection circuit includes the 7th resistance；The first end of 7th resistance and the driving signal output end
Connection, the second end of the 7th resistance is connected with the Drive Protecting Circuit signal input part of the power switch pipe.
The present invention also proposes a kind of IPM modules, including described integrated circuit and power switch pipe；The power switch
Pipe has multiple, the quantity of the Drive Protecting Circuit of power switch pipe and the quantity pair of the power switch pipe in the integrated circuit
Should, and the controlled end of the signal output part of the Drive Protecting Circuit of multiple power switch pipes and multiple power switch pipes
Connect one to one.
Preferably, PFC module is also included inside the IPM, the PFC module includes the 7th power switch pipe, the collection
There is the Drive Protecting Circuit of the power switch pipe of the corresponding controlled end for connecting the 7th power switch pipe into circuit.
The present invention also proposes a kind of air conditioner, includes the Drive Protecting Circuit of the power switch pipe, the integrated circuit,
One or more of described IPM modules.
Technical solution of the present invention consider the power switch pipes of wide-band gap material power switch pipe and traditional silicon materials for
The resistance to overvoltage capabilities of driving voltage are different, and a kind of high reliability power switch pipe is proposed for wide-band gap material power switch pipe
Drive Protecting Circuit；The Drive Protecting Circuit of the power switch pipe is by the way of active control driving voltage, i.e., by setting
Gate control circuit, the first protection circuit and switch are put, with the size of the drive signal received according to signal output part, flexibly
Ground controls the clamp circuit access/disengaging and the signal output part, with by the clamping action of the clamp circuit by institute
The voltage clamping of the drive signal that signal output part is exported is stated to a fixed voltage protection value；And the voltage protection value will not surpass
Go out the drive voltage range of its permission；Wide-band gap material power switch pipe is farthest reduced because controlled end overvoltage is failed,
Improve the driving reliability to wide-band gap material power switch pipe；And technical solution of the present invention has optimization power switch pipe
The effect of the function of parameter, strong support is provided to the advantage for playing wide-band gap material power switch pipe.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the structural representation of the embodiment of integrated circuit one for the Drive Protecting Circuit for being integrated with power switch pipe of the present invention
Figure；
Fig. 2 is that the structure of another embodiment of integrated circuit for the Drive Protecting Circuit for being integrated with power switch pipe of the present invention is shown
It is intended to
Fig. 3 is the internal circuit configuration schematic diagram of IPM modules.
Drawing reference numeral explanation：
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...),
Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each part,
Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, " first ", " second " etc. are somebody's turn to do
Description be only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating indicated skill
The quantity of art feature.Thus, " first " is defined, the feature of " second " can be expressed or implicitly includes at least one spy
Sign.In addition, the technical scheme between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
Based on enough realizations, the knot of this technical scheme is will be understood that when the combination appearance of technical scheme is conflicting or can not realize
Conjunction is not present, also not within the protection domain of application claims.
The present invention proposes a kind of Drive Protecting Circuit of power switch pipe, for being protected to the controlled end of power switch pipe
Shield；Said power switch pipe is preferably the power switch pipe of wide-band gap material.Such as SiC MOSFET, SiC IGBT etc. are
The semiconductor switch device of representative.
Referring to Fig. 1, in one embodiment, the Drive Protecting Circuit of power switch pipe of the present invention includes being used to receive driving
The signal input part IN of the drive signal of the power switch pipe 20, the first protection that current-limiting protection is carried out to the drive signal
Circuit 31, and the signal output part OUT that the drive signal after current limliting is exported, the Drive Protecting Circuit also include clamper
Circuit 32, switch SW and gate control circuit 33.Said switch SW can be semiconductor switch, as triode,
MOSFET pipes etc..The drive circuit 40 has triggering end IN1, after the triggering end IN1 receives control signal, the drive
Dynamic circuit 40 generates the drive signal and exported to the signal input part IN of the Drive Protecting Circuit of the power switch pipe.
The clamp circuit 32 is connected through the switch SW with the signal output part OUT, the gate control circuit 33
With test side and control terminal, the test side of the gate control circuit 33 is connected with the signal input part IN, the gating
The control terminal of control circuit 33 is connected with the controlled end of the switch SW.The gate control circuit 33, for detecting
When stating the voltage of drive signal of signal input part IN inputs and being more than preset voltage value, the switch SW is controlled to turn on/off, with
The voltage clamping for the drive signal for being exported the signal output part by the clamping action of the clamp circuit to one fix
Voltage protection value, so as to effectively protect the controlled end of the power switch pipe 20 of wide-band gap material.It is understood that the electricity
It is within the drive voltage range allowed in the power switch pipe 20 to press protection value.
Specifically, when the voltage of the signal input part IN drive signals received is in peace for wide-band gap material
During full motivation value, after the gate control circuit 33 detects the drive signal, by controlling the switch SW unlatchings/pass
Disconnected, to control the clamp circuit 32 to be disconnected with the signal output part OUT, drive signal is straight after the first protection circuit 31
Output is connect to the controlled end (such as MOSFET grid) of wide-band gap material power switch pipe 20.When signal input part IN is received
Drive signal voltage beyond the power switch pipe 20 of wide-band gap material safe driving range value when, it is described gating control
After circuit 33 detects the drive signal, by controlling the switch SW to turn on/off, with control the clamp circuit 32 with
The signal output part OUT connections, the clamper electricity, after 32 access the signal output part OUT, by the signal output part
The drive signal voltage of OUT outputs is reduced to a relatively low value, so as to reduce the voltage of the signal output part OUT, protection
The safety of the controlled end of the wide-band gap material power switch pipe 20.
As can be seen that technical solution of the present invention is before the controlled end that drive signal exports to the power switch pipe 20,
The detection of gate control circuit 33 can be passed through, to determine the need for doing the drive signal decompression processing, therefore the present invention
Technical scheme is can farthest to reduce power based on a kind of active driving voltage control model, this control model
The controlled end of switching tube 20 improves the functional reliability of power switch pipe 20 because overvoltage is failed.On the other hand, the technology of the present invention
Scheme has the function of the optimization parameter of power switch pipe 20.Illustrate herein by taking MOSFET as an example, when resistance is excessive, can make
Into MOSFET pipe switching speeds are slack-off, power consumption increase；And when resistance is too small, the gate protection of MOSFET pipes can be acted on
Reduce；Therefore it is that the resistance value ratio for making resistance most matches MOSFET pipe switching speeds in theory in existing processing mode
Grid resistance value is slightly larger, is acted on the gate protection improved to MOSFET pipes；And the first guarantor can be made in technical solution of the present invention
Protection circuit 31 is designed according to the resistance for most matching its switching speed, and when driving voltage is excessive, by using clamper electricity
The access on road 32, and protective effect is carried out to the grid of MOSFET pipes；Therefore technical solution of the present invention is to playing wide-band gap material
Advantage provide strong support.
The gate control circuit 33 has two kinds of fit systems with the clamp circuit 32 and switch SW：The first,
The switch SW is in normally off；When the drive signal that the signal output part OUT is received is beyond wide-band gap material
During the safe driving range value of power switch pipe 20, the gate control circuit 33 not output control signal, so that the switch
SW is still within normally off, so that clamp circuit 32 keeps the connection with the signal output part OUT, it is defeated to reduce signal
Go out to hold the voltage of the drive signal of OUT outputs.Second, the switch SW is in normally open；As the signal output part OUT
The drive signal received beyond the power switch pipe 20 of wide-band gap material safe driving range value when, it is described gating control
The output control signal of circuit 33, controlling switch SW closures, so that clamp circuit 32 is connected with the signal output part OUT, with
Reduce the voltage of the drive signal of signal output part OUT outputs.
Technical solution of the present invention consider the power switch pipes of wide-band gap material power switch pipe and traditional silicon materials for
The resistance to overvoltage capabilities of driving voltage are different, and a kind of high reliability power switch pipe is proposed for wide-band gap material power switch pipe
Drive Protecting Circuit；The Drive Protecting Circuit of the power switch pipe is by the way of active control driving voltage, i.e., by setting
Gate control circuit 33, the first protection circuit 31 and switch SW are put, with the drive signal that is received according to signal output part OUT
Size, neatly control the clamp circuit 32 access/depart from the signal output part OUT so that output is to the work(
The drive signal voltage of rate switching tube controlled end is without departing from the drive voltage range that it allows；Farthest reduce wide taboo
Carrying material power switch pipe improves the driving reliability to wide-band gap material power switch pipe because controlled end overvoltage is failed；And
And technical solution of the present invention has the function that the function of optimizing power switch pipe parameter, to playing wide-band gap material power switch pipe
Advantage provide strong support.
It is understood that the present invention is not only applicable to the driving protection of the power switch pipe of wide-band gap material, its core
Heart circuit theory and its derivative circuit are also applied for the Drive Protecting Circuit of the power switch pipe of other types material.The driving
Switching tube can be IGBT, MOSFET etc..
Referring to Fig. 1, first protection circuit 31 is the controlled terminal protecting circuit based on traditional power switch pipe；
In the present embodiment, first protection circuit 31 includes first resistor R1；The first end of the first resistor R1 and the signal
Input IN connections, the second end of the first resistor R1 are connected with the signal output part OUT.Certainly, first protection
Circuit 31 can also access some resistance, to improve the functional reliability of first protection circuit.
It is by the clamping action of clamp circuit 32, to reduce signal output part OUT voltage in this programme；Therefore
In this programme, clamping action is carried out preferably by voltage stabilizing clamp diode.Clamp diode can more be accurately controlled output
To the driving voltage of power switch pipe controlled end.The clamp circuit 32 includes the first clamp diode D1, the pole of the second clamper two
Pipe D2；The negative electrode of the first clamp diode D1 is connected with the switch SW, the anode of the first clamp diode D1 with
The anode connection of the second clamp diode D2, the minus earth of the second clamp diode D2.Said first pincers
Position diode D1, the second clamp diode D2 can use the voltage-regulator diode of different voltage stabilizing values.Due to the work(of wide-band gap material
Rate switching tube has reverse driving voltage, therefore sets first clamp diode, the second clamp diode with right respectively
Positive driving voltage and reverse driving voltage carry out clamper.Further, the clamp circuit 32 can also use multiple
Clamp diode is connected, to control the signal output part OUT to export the electricity of the drive signal to the power switch pipe
Pressure value.
When drive signal is forward voltage, and when switch SW closures, the clamp circuit 32 and signal output part OUT connect
When connecing, the driving voltage of the signal output part OUT is by the first clamp diode D1 reverse breakdowns, at the second clamp diode D2
In conducting state, therefore the signal output part OUT is exported to the drive signal of the power switch pipe and is clamped to described
One clamp diode D1 voltage stabilizing value (conduction voltage drop that have ignored the second clamp diode herein).Likewise, work as drive signal
For backward voltage when, and when switch SW closure, when clamp circuit 32 is connected with the signal output part OUT, the signal output
Holding OUT driving voltage, the first clamp diode D1 is in the conduction state, therefore institute by the second clamp diode D2 reverse breakdowns
State signal output part OUT and export to the drive signal of the power switch pipe and be clamped to the steady of the second clamp diode D2
Pressure value.
Technical solution of the present invention realizes the voltage-controlled scheme of active drive by the gate control circuit 33.The choosing
Logical control circuit 33 includes second resistance R2,3rd resistor R3, first comparator A1, reference voltage generator Vcc1；Described
One comparator A1 output end is the control terminal.The forward end of the first comparator A1 and the first of the second resistance R2
End, 3rd resistor R3 first end interconnection, the second end of the second resistance R2 are the test side, and the second resistance R2
The second end be connected with the signal input part IN, the second end of 3rd resistor R3 ground connection；The first comparator A1's
Backward end is connected with the reference voltage generator Vcc1.
The first comparator A1 is voltage comparator, herein using the switch SW as normally open for example, when letter
The driving voltage that number input IN is received is excessive, and the driving voltage is followed by by second resistance R2,3rd resistor R3 partial pressures
Enter first comparator A1 forward end, it is described when causing the voltage of first comparator A1 forward ends to be more than the voltage of its backward end
First comparator A1 output end exports a control signal, the switch SW closures is controlled, so as to control the clamp circuit 32
Access the signal output part OUT；Reduce the voltage for accessing to the controlled end of power switch pipe 20.
The reference voltage generator Vcc1 can be made up of with reference to direct voltage source clamp circuit 32, can also directly by
Voltage source is formed.Voltage caused by the reference voltage generator Vcc1 can carry out autonomous according to different types of device requirement
Setting.Further, the voltage of the reference voltage generator Vcc1 is adjustable, so that the driving of the power switch pipe
Protection circuit can be adapted to a variety of different types of power switch pipes 20.Preferably, the reference voltage generator Vcc1 is produced
Voltage be 5V.
Referring to Fig. 2, in another embodiment, the gate control circuit 33 include the 4th resistance R4, the 5th resistance R5,
6th resistance R6, the second comparator A2, the 3rd clamp diode D3；The output end of the second comparator A2 is the control
End；The forward end of the second comparator A2 interconnects with the first end of the 4th resistance R4, the 5th resistance R5 first end, institute
The second end for stating the 4th resistance R4 is the test side, and the second end of the 4th resistance R4 connects with the signal input part IN
Connect, the second end ground connection of the 5th resistance R5；The backward end of the second comparator A2 and the first of the 6th resistance R6
End, the 3rd clamp diode D3 negative electrode interconnection, the second end of the 6th resistance R6 supply dc source Vcc2 connections, and described the
Three clamp diode D3 plus earth.
It is described second by the 6th resistance R6 and the 3rd clamp diode D3 and dc source Vcc2 in the embodiment
Comparator A2 backward end provides reference voltage.Herein it should be noted that the dc source Vcc2 can be used as the work(
One part of the Drive Protecting Circuit of rate switching tube, external part can also be used as, do not limited herein.Specifically, due to
Dc source Vcc2 provide for forward voltage, and the plus earth of the 3rd clamp diode D3, therefore the 3rd clamper two
Pole pipe D3 is in reverse breakdown state, and the reverse terminal voltage of the second comparator A2 is the voltage stabilizing value of the voltage-stabiliser tube.We
, can be by selecting different types of voltage-stabiliser tube, so that the voltage of the second comparator A2 backward ends reaches different in case
Value, to match different types of power switch pipe 20.Preferably, the voltage stabilizing value of the 3rd clamp diode D3 is 5V.
The present invention also proposes a kind of integrated circuit 10, and the integrated circuit 10 includes drive circuit 40 and described work(
The Drive Protecting Circuit of rate switching tube；The drive circuit 40 has driving signal output end；The driving of the drive circuit 40
Signal output part is connected with the signal input part IN of the Drive Protecting Circuit of the power switch pipe, the drive of the power switch pipe
The signal output part OUT of dynamic protection circuit connects for the controlled end of the power switch pipe 20.The integrated circuit 10 can be in
Chip pattern.
The integrated circuit 10 is integrated with the drive circuit 40 of the power switch pipe 20 and the power switch pipe
Drive Protecting Circuit；Relative to the Drive Protecting Circuit of the external power switch pipe of drive circuit 40, integrated circuit of the present invention
10 have the characteristics that small volume, circuit noise are small, action sensitivity is high, strong antijamming capability.
Further, the driving signal output end of the drive circuit 40 and the Drive Protecting Circuit of the power switch pipe
Signal input part IN between be additionally provided with the second protection circuit 50；Second protection circuit 50 from the drive signal to exporting
The drive signal of end output carries out current limliting or decompression；It is also used for preventing the letter from the power switch tube drives protection circuit simultaneously
Number input IN towards the driving signal output end direction reverse surge voltage/electric current, so as to be exported to the drive signal
Protected at end.
In this programme, second protection circuit 50 comprises at least the 7th resistance R7；The first of the 7th resistance R7
End is connected with the driving signal output end, the second end of the 7th resistance R7 and the driving protection electricity of the power switch pipe
Road signal input part IN connections.Second protection circuit 50 can also include multiple resistance and diode.
The present invention also proposes a kind of IPM (Intelligent Power Module) module, referring to Fig. 3, the IPM moulds
Block includes the integrated circuit and power switch pipe；The power switch pipe has multiple, power switch in the integrated circuit
The quantity of the Drive Protecting Circuit of pipe is corresponding with the quantity of the power switch pipe, and the driving of multiple power switch pipes is protected
The controlled end of the signal output part of protection circuit and multiple power switch pipes connects one to one.
Specifically, in the present embodiment, the power switch pipe includes the first power tube MOS1, the second power tube MOS2, the
Three power tube MOS3, the 4th power tube MOS4, the 5th power tube MOS5, the 6th power tube MOS6；The first power tube MOS1,
Second power tube MOS2, the 3rd power tube MOS3, the 4th power tube MOS4, the 5th power tube MOS5, the 6th power tube MOS6 structures
Into full bridge inverter.The signal output part of the Drive Protecting Circuit of the power switch pipe include the first signal output part,
Secondary signal output end, the 3rd signal output part, the 4th signal output part, the 5th signal output part, the 6th signal output part；Institute
The controlled end that the first signal output part is stated with the first power tube MOS1 is connected；The secondary signal output end and described second
Power tube MOS2 controlled end connection；3rd signal output part is connected with the controlled end of the 3rd power tube MOS3；Institute
The controlled end that the 4th signal output part is stated with the 4th power tube MOS4 is connected；5th signal output part and the described 5th
Power tube MOS5 controlled end connection；6th signal output part is connected with the controlled end of the 6th power tube MOS6.
It will be appreciated by persons skilled in the art that the IPM modules are not only device for power switching and drive circuit collection
Into together.But also overvoltage has been internally integrated, the failure detector circuit such as overcurrent and overheat.IPM modules typically use
IGBT or MOSFET is internally integrated current sensor and drive circuit as power switch component.
Referring to Fig. 3, further, the IPM inside modules also include PFC (Power Factor Correction)
Module, i.e., described IPM modules are integrated with the functions such as the original inversions of IPM, protection, also with PFC functions.It is understood that
The PFC module includes the 7th power switch pipe MOS7, has corresponding connection the 7th power switch in the integrated circuit
The Drive Protecting Circuit of the power switch pipe of pipe MOS7 controlled end.
The present invention also proposes a kind of air conditioner, and the air conditioner includes the Drive Protecting Circuit of the power switch pipe, institute
State one or more of integrated circuit, described IPM modules.I.e. described air conditioner can include the single power switch pipe
Drive Protecting Circuit, the integrated circuit, the IPM modules；The driving including the power switch pipe it can also protect simultaneously
Protection circuit, the integrated circuit, one kind in the IPM modules, two or three.The IPM modules are located at the air conditioner
Electric-controlled plate on.Specifically, the air conditioner is connected in the main circuit of the air conditioner, for realizing DC-AC mapping functions.
The IPM can be used for washing machine, refrigerator etc..
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in the scope of patent protection of the present invention.
Claims (10)
1. a kind of Drive Protecting Circuit of power switch pipe, including drive for receiving the drive signal of the power switch pipe
Signal input part, the first protection circuit that current-limiting protection is carried out to the drive signal, and the driving after current limliting is believed
Number output signal output part, it is characterised in that the Drive Protecting Circuit also include clamp circuit, switch and gating control
Circuit；
The clamp circuit is connected through the switch with the signal output part, and the gate control circuit has test side and control
End processed, the test side of the gate control circuit are connected with the signal input part, the control terminal of the gate control circuit with
The controlled end connection of the switch；
The gate control circuit, for being more than default electricity in the voltage for the drive signal for detecting the signal input part input
During pressure value, the switch on/off is controlled, with by the clamping action of the clamp circuit that signal output part institute is defeated
The voltage clamping of the drive signal gone out is to a fixed voltage protection value.
2. the Drive Protecting Circuit of power switch pipe as claimed in claim 1, it is characterised in that the first protection circuit bag
Include first resistor；The first end of the first resistor is connected with the signal input part, the second end of the first resistor and institute
State signal output part connection.
3. the Drive Protecting Circuit of power switch pipe as claimed in claim 1, it is characterised in that the clamp circuit includes the
One clamp diode, the second clamp diode；The negative electrode of first clamp diode connects with the switch, first pincers
The anode of position diode is connected with the anode of second clamp diode, the minus earth of second clamp diode.
4. the Drive Protecting Circuit of the power switch pipe as described in claims 1 to 3 any one, it is characterised in that the choosing
Logical control circuit includes second resistance, 3rd resistor, first comparator, reference voltage generator；The first comparator it is defeated
It is the control terminal to go out end；
First end, the first end of 3rd resistor of the forward end of the first comparator and the second resistance interconnect, and described the
Second end of two resistance is the test side, and the second end of the second resistance is connected with the signal input part, described
The second end ground connection of three resistance；The backward end of the first comparator is connected with the reference voltage generator.
5. the Drive Protecting Circuit of the power switch pipe as described in claims 1 to 3 any one, it is characterised in that the choosing
Logical control circuit includes the 4th resistance, the 5th resistance, the 6th resistance, the second comparator, the 3rd clamp diode；Second ratio
Output end compared with device is the control terminal；
First end, the first end of the 5th resistance of the forward end of second comparator and the 4th resistance interconnect, and described the
Second end of four resistance is the test side, and the second end of the 4th resistance is connected with the signal input part, described
The second end ground connection of five resistance；The first end of the backward end of second comparator and the 6th resistance, the pole of the 3rd clamper two
The negative electrode interconnection of pipe, the second end of the 6th resistance connect for dc source, the plus earth of the 3rd clamp diode.
A kind of 6. integrated circuit, it is characterised in that the work(including drive circuit and as described in claim 1 to 5 any one
The Drive Protecting Circuit of rate switching tube；The drive circuit has driving signal output end；
The signal input part of the driving signal output end of the drive circuit and the Drive Protecting Circuit of the power switch pipe connects
Connect, the signal output part of the Drive Protecting Circuit of the power switch pipe connects for the controlled end of the power switch pipe.
7. integrated circuit as claimed in claim 6, it is characterised in that the driving signal output end of the drive circuit and the work(
The second protection circuit is additionally provided between the signal input part of the Drive Protecting Circuit of rate switching tube；
Second protection circuit includes the 7th resistance；The first end of 7th resistance connects with the driving signal output end
Connect, the second end of the 7th resistance is connected with the Drive Protecting Circuit signal input part of the power switch pipe.
8. a kind of IPM modules, it is characterised in that including integrated circuit and power switch pipe as claimed in claims 6 or 7；
The power switch pipe has multiple, and the quantity of the Drive Protecting Circuit of power switch pipe is opened with the power in the integrated circuit
It is corresponding to close the quantity of pipe, and the signal output part of the Drive Protecting Circuit of multiple power switch pipes is opened with multiple power
The controlled end for closing pipe connects one to one.
9. IPM modules as claimed in claim 8, it is characterised in that the IPM inside modules also include PFC module, described
PFC module includes the 7th power switch pipe, has the controlled of corresponding connection the 7th power switch pipe in the integrated circuit
The Drive Protecting Circuit of the power switch pipe at end.
10. a kind of air conditioner, it is characterised in that include the driving of the power switch pipe as described in claim 1 to 5 any one
Protection circuit, one or more in integrated circuit as claimed in claims 6 or 7, IPM modules as claimed in claim 8 or 9
It is individual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710590701.9A CN107342753A (en) | 2017-07-18 | 2017-07-18 | Drive Protecting Circuit, integrated circuit, IPM modules and the air conditioner of power switch pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710590701.9A CN107342753A (en) | 2017-07-18 | 2017-07-18 | Drive Protecting Circuit, integrated circuit, IPM modules and the air conditioner of power switch pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107342753A true CN107342753A (en) | 2017-11-10 |
Family
ID=60216013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710590701.9A Pending CN107342753A (en) | 2017-07-18 | 2017-07-18 | Drive Protecting Circuit, integrated circuit, IPM modules and the air conditioner of power switch pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107342753A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799721A (en) * | 2019-01-31 | 2019-05-24 | 海信（山东）空调有限公司 | A kind of control circuit of household electrical appliance, control method and household electrical appliance |
| CN111970799A (en) * | 2020-08-12 | 2020-11-20 | 陕西亚成微电子股份有限公司 | Multi-segment linear LED drive control method and circuit |
| CN112448702A (en) * | 2020-10-22 | 2021-03-05 | 珠海格力电器股份有限公司 | Drive protection circuit and method and electrical equipment |
| CN115411701A (en) * | 2022-07-28 | 2022-11-29 | 北京智芯微电子科技有限公司 | Power control circuit, voltage adjusting circuit, electronic device and chip |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411113A (en) * | 2016-11-18 | 2017-02-15 | 美的集团股份有限公司 | Grid protection circuit and power electronic equipment |
-
2017
- 2017-07-18 CN CN201710590701.9A patent/CN107342753A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411113A (en) * | 2016-11-18 | 2017-02-15 | 美的集团股份有限公司 | Grid protection circuit and power electronic equipment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799721A (en) * | 2019-01-31 | 2019-05-24 | 海信（山东）空调有限公司 | A kind of control circuit of household electrical appliance, control method and household electrical appliance |
| CN109799721B (en) * | 2019-01-31 | 2021-12-14 | 海信（山东）空调有限公司 | Control circuit and control method of household appliance and household appliance |
| CN111970799A (en) * | 2020-08-12 | 2020-11-20 | 陕西亚成微电子股份有限公司 | Multi-segment linear LED drive control method and circuit |
| CN112448702A (en) * | 2020-10-22 | 2021-03-05 | 珠海格力电器股份有限公司 | Drive protection circuit and method and electrical equipment |
| CN115411701A (en) * | 2022-07-28 | 2022-11-29 | 北京智芯微电子科技有限公司 | Power control circuit, voltage adjusting circuit, electronic device and chip |
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Application publication date: 20171110 |