CN203504407U - Igbt drive circuit and electric pressure cooker - Google Patents
Igbt drive circuit and electric pressure cooker Download PDFInfo
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- CN203504407U CN203504407U CN201320564963.5U CN201320564963U CN203504407U CN 203504407 U CN203504407 U CN 203504407U CN 201320564963 U CN201320564963 U CN 201320564963U CN 203504407 U CN203504407 U CN 203504407U
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Abstract
The utility model discloses an IGBT drive circuit and an electric pressure cooker. The IGBT drive circuit is connected between a main controller and a coil panel of the electric pressure cooker, and the IGBT drive circuit comprises an insulated gate bipolar transistor (IGBT), a driving control module and a driving time-delay module. In the IGBT drive circuit, the driving control module controls the IGBT to be conducted or cut off in dependence on driving control signals output by the main controller, amd the driving time-delay module controls the driving control module to drive the IGBT in a time-delay manner. When the driving control module receives low level driving control signals, the driving control module drives the IGBT after the driving time-delay module delays the time, and therefore the conduction time of the IGBT is prolonged, a pulse current generated at the conduction moment of the IGBT is reduced, the IGBT is prevented from being damaged by bearing a too-high pulse current, the operational reliability of the IGBT drive circuit is improved, and therefore the reliability of the electric pressure cooker is improved, and the service life of the electric pressure cooker is prolonged.
Description
Technical field
The utility model relates to household electrical appliance technical field, relates in particular to a kind of IGBT drive circuit and electric pressure cooker.
Background technology
IGBT(Insulated Gate Bipo1ar Transistor, insulated gate bipolar transistor) be MOSFET(Metal-Oxide-Semiconductor Field-Effect Transistor, metal oxide semiconductor field effect tube) with GTR(Giant Transistor, high power transistor) multiple device, therefore the advantage of integrated MOSFET and GTR is current comparatively ideal switching device.
In the application of household electric pressure cooker, conventionally adopt IGBT as the coil panel of controlling electric pressure cooker, to produce the switching device of high-frequency alternating magnetic field.Yet, in the IGBT of existing electric pressure cooker drive circuit, do not arrange IGBT is carried out to delay and running, therefore the driver module at IGBT receives after effective drive control signal, drive immediately IGBT, cause IGBT ON time short, in IGBT conducting moment, easily cause produced pulse current bigger than normal and burn IGBT, especially at EFT(Electrical Fast Transient, electrical fast transient (eft)) easily cause during disturbed test IGBT to damage, thereby reduced the functional reliability of IGBT drive circuit.
Utility model content
Main purpose of the present utility model is to propose a kind of IGBT drive circuit and electric pressure cooker, be intended to insulated gate bipolar transistor IGBT to carry out delay and running, avoid IGBT to damage owing to bearing excessive pulse current, improve the functional reliability of IGBT drive circuit.
In order to achieve the above object, the utility model proposes a kind of IGBT drive circuit, this IGBT drive circuit is connected between the master controller and coil panel of electric pressure cooker, comprise insulated gate bipolar transistor, for the power input of power supply source voltage input, for control the drive control module of described insulated gate bipolar transistor conducting or cut-off according to the drive control signal of described master controller output, and for controlling the driving time delay module of insulated gate bipolar transistor described in described drive control module delay and running;
The input of described drive control module is connected with the drive control signal output of described master controller, the feeder ear of described drive control module is connected with described power input, and the output of described drive control module is connected with the grid of described insulated gate bipolar transistor; Described driving time delay module is connected between described power input and the output control terminal of described drive control module, and the drain electrode of described insulated gate bipolar transistor is connected with described coil panel, the source ground of described insulated gate bipolar transistor.
Preferably, described drive control module comprises the first triode, the second triode, the 3rd triode, the first resistance and the second resistance;
The base stage of described the first triode, as the input of described drive control module, is connected with the drive control signal output of described master controller, and via described the first resistance, is connected the grounded emitter of described the first triode with described power input;
The base stage of described the second triode is connected with the drain electrode of described the first triode, and be connected with described power input via described the second resistance, the drain electrode of described the second triode is connected with described power input, the emitter of described the second triode is as the output of described drive control module, be connected with the grid of described insulated gate bipolar transistor, and be connected with the emitter of described the 3rd triode;
The base stage of described the 3rd triode is as the output control terminal of described drive control module, be connected with described driving time delay module, and be connected with the drain electrode of described the first triode, also via described the second resistance, be connected the grounded drain of described the 3rd triode with described power input.
Preferably, described drive control module also comprises the 3rd resistance and the 4th resistance; One end of described the 3rd resistance is connected with the drive control signal output of described master controller, and is connected with described power input via described the first resistance, and the other end of described the 3rd resistance is connected with the base stage of described the first triode; One end of described the 4th resistance is connected with described power input, and the other end of described the 4th resistance is connected with the drain electrode of described the second triode.
Preferably, described driving time delay module comprises one first electric capacity; One end of described the first electric capacity is connected with the base stage of described the 3rd triode, and is connected with described power input via described the second resistance, the other end ground connection of described the first electric capacity.
Preferably, described IGBT drive circuit also comprises that described Voltage stabilizing module is connected in the output of described drive control module and the grid of described insulated gate bipolar transistor is connected for the grid of described insulated gate bipolar transistor being carried out to the Voltage stabilizing module of voltage stabilizing processing.
Preferably, described Voltage stabilizing module comprises a voltage stabilizing didoe; The negative electrode of described voltage stabilizing didoe is connected with the output of described drive control module, and is connected the plus earth of described voltage stabilizing didoe with the grid of described insulated gate bipolar transistor.
Preferably, described Voltage stabilizing module also comprises the 5th resistance and the 6th resistance; Described the 5th one end of resistance and the output of described drive control module are connected, and described the 5th other end of resistance and the grid of described insulated gate bipolar transistor are connected, and via described the 6th grounding through resistance.
The utility model also proposes a kind of electric pressure cooker, this electric pressure cooker comprises master controller and coil panel, also comprise IGBT drive circuit, this IGBT drive circuit is connected between the master controller and coil panel of electric pressure cooker, comprise insulated gate bipolar transistor, power input for the input of power supply source voltage, for control the drive control module of described insulated gate bipolar transistor conducting or cut-off according to the drive control signal of described master controller output, and for controlling the driving time delay module of insulated gate bipolar transistor described in described drive control module delay and running,
The input of described drive control module is connected with the drive control signal output of described master controller, the feeder ear of described drive control module is connected with described power input, and the output of described drive control module is connected with the grid of described insulated gate bipolar transistor; Described driving time delay module is connected between described power input and the output control terminal of described drive control module, and the drain electrode of described insulated gate bipolar transistor is connected with described coil panel, the source ground of described insulated gate bipolar transistor.
The IGBT drive circuit the utility model proposes, by drive control module, according to the drive control signal of master controller output, control insulated gate bipolar transistor IGBT conducting or cut-off, by driving time delay module, control drive control module delay and running IGBT, drive control module is when receiving drive control signal, first time delay module to be driven carries out just driving IGBT after time delay, thereby extend the ON time of IGBT, reduce the pulse current of IGBT conducting moment generation, avoid IGBT to damage owing to bearing excessive pulse current, improve the functional reliability of IGBT drive circuit, and then raising adopts the reliability of the electric pressure cooker of this IGBT drive circuit, extend the useful life of electric pressure cooker.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model IGBT drive circuit preferred embodiment.
The realization of the purpose of this utility model, functional characteristics and advantage, in connection with embodiment, and is described further with reference to accompanying drawing.
Embodiment
Below in conjunction with Figure of description and specific embodiment, further illustrate the technical solution of the utility model.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model proposes a kind of IGBT drive circuit.
With reference to Fig. 1, Fig. 1 is the electrical block diagram of the utility model IGBT drive circuit preferred embodiment.
In the utility model preferred embodiment, IGBT drive circuit 10 is connected between the master controller 20 and coil panel 30 of electric pressure cooker.This IGBT drive circuit 10 comprise insulated gate bipolar transistor 11(hereinafter IGBT11 be insulated gate bipolar transistor 11), power input Vin, drive control module 12 and drive time delay module 13.Power input Vin is for the input of power supply source voltage, the present embodiment is 18V from the supply voltage of power input Vin input, drive control module 12 is for controlling insulated gate bipolar transistor 11 conductings or cut-off according to the drive control signal of master controller 20 outputs, to pass through alternate conduction and the cut-off of insulated gate bipolar transistor 11, the coil panel 30 of controlling electric pressure cooker produces high-frequency alternating magnetic field, drives time delay module 13 for controlling drive control module 12 delay and running insulated gate bipolar transistors 11.
Wherein, the input of drive control module 12 is connected with the drive control signal output of master controller 20, the feeder ear of drive control module 12 is connected with power input Vin, and the output of drive control module 12 is connected with the grid of insulated gate bipolar transistor 11; Drive time delay module 13 to be connected between power input Vin and the output control terminal of drive control module 12, the drain electrode of insulated gate bipolar transistor 11 is connected with coil panel 30, the source ground of insulated gate bipolar transistor 11.
In the present embodiment, drive control module 12 receives the drive control signal of master controller 20 outputs, and according to the drive control signal receiving, control insulated gate bipolar transistor IGBT 11 conductings or cut-off, when this drive control signal is low level, drive control module 12 is opened the grid that supply voltage exports IGBT11 to, drive IGBT11 conducting, when this drive control signal is high level, the cut off the electricity supply output of voltage of drive control module 12, controls IGBT11 cut-off.In addition, when the drive control signal of master controller 20 outputs is low level, drive the advanced line delay of time delay module 13 to process, time delay module 13 to be driven carries out time delay rear drive control module 12 and just drives IGBT11, to control the slow conducting of IGBT11, drive 13 couples of IGBT11 of time delay module to play soft on-off action, guarantee that IGBT11 is damaged.
With respect to prior art, the IGBT drive circuit 10 the utility model proposes, by driving time delay module 13, control drive control module 12 delay and running IGBT11, drive control module 12 is when receiving low level drive control signal, first time delay module 13 to be driven carries out just driving IGBT11 after time delay, thereby extend the ON time of IGBT11, reduce the pulse current of IGBT11 conducting moment generation, avoid IGBT11 to damage owing to bearing excessive pulse current, improve the functional reliability of IGBT11 drive circuit, and then raising adopts the reliability of the electric pressure cooker of this IGBT drive circuit 10, extend the useful life of electric pressure cooker.
In the present embodiment, as shown in Figure 1, drive control module 12 comprises the first triode Q1, the second triode Q2, the 3rd triode Q3, the first resistance R 1 and the second resistance R 2.
The base stage of the first triode Q1, as the input of drive control module 12, is connected with the drive control signal output of master controller 20, and via the first resistance R 1, is connected the grounded emitter of the first triode Q1 with power input Vin.
The base stage of the second triode Q2 is connected with the drain electrode of the first triode Q1, and be connected with power input Vin via the second resistance R 2, the drain electrode of the second triode Q2 is connected with power input Vin, the emitter of the second triode Q2 is as the output of drive control module 12, be connected with the grid of insulated gate bipolar transistor 11, and be connected with the emitter of the 3rd triode Q3.
The base stage of the 3rd triode Q3, as the output control terminal of drive control module 12, is connected with driving time delay module 13, and is connected with the drain electrode of the first triode Q1, also via the second resistance R 2, is connected the grounded drain of the 3rd triode Q3 with power input Vin.
Particularly, drive control module 12 also comprises the 3rd resistance R 3 and the 4th resistance R 4; One end of the 3rd resistance R 3 is connected with the drive control signal output of master controller 20, and is connected with power input Vin via the first resistance R 1, and the other end of the 3rd resistance R 3 is connected with the base stage of the first triode Q1; One end of the 4th resistance R 4 is connected with power input Vin, and the other end of the 4th resistance R 4 is connected with the drain electrode of the second triode Q2.
In Fig. 1, drive time delay module 13 to comprise the first capacitor C 1; One end of the first capacitor C 1 is connected with the base stage of the 3rd triode Q3, and is connected with power input Vin via the second resistance R 2, the other end ground connection of the first capacitor C 1.1 couple of IGBT11 of the first capacitor C of the present embodiment plays soft on-off action, effectively prevents that IGBT11 damages when EFT disturbed test.
In the present embodiment, as shown in Figure 1, IGBT drive circuit 10 also comprises Voltage stabilizing module 14, and the output that Voltage stabilizing module 14 is connected in drive control module 12 is connected with the grid of insulated gate bipolar transistor 11.Voltage stabilizing module 14, for the grid of insulated gate bipolar transistor 11 is carried out to voltage stabilizing processing, guarantees that the grid voltage of IGBT11 is stabilized in supply voltage value, as the grid voltage of IGBT11 is stabilized in to 18V, prevents the too high damage of the grid voltage IGBT11 of IGBT11.
Particularly, Voltage stabilizing module 14 comprises voltage stabilizing didoe ZD1; The negative electrode of voltage stabilizing didoe ZD1 is connected with the output of drive control module 12, and is connected the plus earth of voltage stabilizing didoe ZD1 with the grid of insulated gate bipolar transistor 11.The voltage stabilizing didoe ZD1 that the present embodiment adopts voltage stabilizing value to equate with supply voltage, the voltage stabilizing value that is voltage stabilizing didoe ZD1 is 18V, voltage stabilizing didoe ZD1, when IGBT11 conducting, is stabilized in 18V by the grid voltage of IGBT11, prevents the too high damage of the grid voltage IGBT11 of IGBT11.The present embodiment be take supply voltage and is described as 18V as example, in practical application according to the size of supply voltage, can suitably choose the voltage stabilizing value of voltage stabilizing didoe ZD1, as long as the voltage stabilizing value of voltage stabilizing didoe ZD1 equates with supply voltage, the size at this to supply voltage is not restricted.
Particularly, Voltage stabilizing module 14 also comprises the 5th resistance R 5 and the 6th resistance R 6; One end of the 5th resistance R 5 is connected with the output of drive control module 12, and the other end of the 5th resistance R 5 is connected with the grid of insulated gate bipolar transistor 11, and via the 6th resistance R 6 ground connection.
The operation principle of the utility model IGBT drive circuit 10 specifically describes as follows:
Master controller 20 is from power on to entering in this period of normal operation, the drive control signal of the drive control signal output output of master controller 20 is in nondeterministic statement, now, owing to drawing effect in the first resistance R 1, the base stage that makes the first triode Q1 is high level, the first triode Q1 is in saturation conduction state, the base voltage of the base voltage of the second triode Q2 and the 3rd triode Q3 is dragged down, thereby make the second triode Q2 cut-off, the 3rd triode Q3 conducting, due to the 3rd triode Q3 conducting, the grid that makes IGBT11 is low level, now IGBT11 cut-off, now IGBT11 in off state, hence one can see that, master controller 20 is from power on to entering in this period of normal operation, IGBT11 is in off state.
When the drive control signal of the drive control signal output output of master controller 20 is low level, this low level drive control signal exports the base stage of the first triode Q1 to, make the first triode Q1 cut-off, owing to drawing effect in the second resistance R 2, the base stage that makes the second triode Q2 is high level, thereby the second triode Q2 conducting, and, during the first triode Q1 cut-off, from the 18V supply voltage of power input Vin input, via the second resistance R 2, give the first capacitor C 1 charging, voltage in the first capacitor C 1 increases in the time of can making the 3rd triode Q3 cut-off, the 3rd triode Q3 cut-off, the 18V supply voltage of now inputting from power input Vin is via the 4th resistance R 4, the second triode Q2, the 5th resistance R 5 is input to the grid of IGBT11, drive IGBT11 conducting.Here, during the first triode Q1 cut-off, 18V supply voltage is first to the first capacitor C 1 charging, voltage in the first capacitor C 1 increases in the time of can making the 3rd triode Q3 cut-off, the 3rd triode Q3 just ends, thereby realize IGBT11 is driven to time delay, effectively prevent that IGBT11 damages when EFT disturbed test.
When the drive control signal of the drive control signal output output of master controller 20 is high level, the drive control signal of this high level exports the base stage of the first triode Q1 to, drive the first triode Q1 conducting, owing to after the first triode Q1 conducting, the base voltage of the second triode Q2 being dragged down, the base stage of the second triode Q2 is low level, therefore the second triode Q2 cut-off, IGBT11 turn-offs rapidly.The 3rd triode Q3 conducting when IGBT11 turn-offs, provides a repid discharge loop to grid, the parasitic capacitance between source electrode of IGBT11, and the grid of IGBT11, the parasitic capacitance between source electrode are by the 5th resistance R 5, the 3rd triode Q3 repid discharge.
The utility model also proposes a kind of electric pressure cooker, this electric pressure cooker comprises master controller 20, coil panel 30 and IGBT drive circuit 10, the circuit structure of this IGBT drive circuit 10, operation principle and the beneficial effect bringing all can, with reference to above-described embodiment, repeat no more herein.
As shown in Figure 1, in IGBT drive circuit 10, one end of the drain electrode of IGBT11 and the coil panel of electric pressure cooker 30 is connected, electric main is from the first alternating current input L and the second alternating current input N input, after rectifier bridge BD1 rectification, be converted to direct current, this direct current is input to the other end of coil panel 30 after inductance L 1 and the 3rd capacitor C 3 filtering.When IGBT11 conducting, direct current is to coil panel 30 chargings, and when IGBT11 ends, coil panel 30 is to the second capacitor C 2 electric discharges, and coil panel 30 and the second capacitor C 2 form LC oscillation circuit, produce LC vibration when IGBT11 conducting and cut-off.After IGBT drive circuit 10 powers on and normally moves, constantly conducting of IGBT11 and cut-off, thus at coil panel 30, produce high-frequency alternating magnetic field around.In use, the bottom induced field of electric pressure cooker and produce eddy current, produces heat to electric pressure cooker then, reaches the object of Electromagnetic Heating.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (8)
1. an IGBT drive circuit, be connected between the master controller and coil panel of electric pressure cooker, it is characterized in that, comprise insulated gate bipolar transistor, for the power input of power supply source voltage input, for control the drive control module of described insulated gate bipolar transistor conducting or cut-off according to the drive control signal of described master controller output, and for controlling the driving time delay module of insulated gate bipolar transistor described in described drive control module delay and running;
The input of described drive control module is connected with the drive control signal output of described master controller, the feeder ear of described drive control module is connected with described power input, and the output of described drive control module is connected with the grid of described insulated gate bipolar transistor; Described driving time delay module is connected between described power input and the output control terminal of described drive control module, and the drain electrode of described insulated gate bipolar transistor is connected with described coil panel, the source ground of described insulated gate bipolar transistor.
2. IGBT drive circuit as claimed in claim 1, is characterized in that, described drive control module comprises the first triode, the second triode, the 3rd triode, the first resistance and the second resistance;
The base stage of described the first triode, as the input of described drive control module, is connected with the drive control signal output of described master controller, and via described the first resistance, is connected the grounded emitter of described the first triode with described power input;
The base stage of described the second triode is connected with the drain electrode of described the first triode, and be connected with described power input via described the second resistance, the drain electrode of described the second triode is connected with described power input, the emitter of described the second triode is as the output of described drive control module, be connected with the grid of described insulated gate bipolar transistor, and be connected with the emitter of described the 3rd triode;
The base stage of described the 3rd triode is as the output control terminal of described drive control module, be connected with described driving time delay module, and be connected with the drain electrode of described the first triode, also via described the second resistance, be connected the grounded drain of described the 3rd triode with described power input.
3. IGBT drive circuit as claimed in claim 2, is characterized in that, described drive control module also comprises the 3rd resistance and the 4th resistance;
One end of described the 3rd resistance is connected with the drive control signal output of described master controller, and is connected with described power input via described the first resistance, and the other end of described the 3rd resistance is connected with the base stage of described the first triode; One end of described the 4th resistance is connected with described power input, and the other end of described the 4th resistance is connected with the drain electrode of described the second triode.
4. IGBT drive circuit as claimed in claim 3, is characterized in that, described driving time delay module comprises one first electric capacity; One end of described the first electric capacity is connected with the base stage of described the 3rd triode, and is connected with described power input via described the second resistance, the other end ground connection of described the first electric capacity.
5. the IGBT drive circuit as described in any one in claim 1 to 4, it is characterized in that, described IGBT drive circuit also comprises that described Voltage stabilizing module is connected in the output of described drive control module and the grid of described insulated gate bipolar transistor is connected for the grid of described insulated gate bipolar transistor being carried out to the Voltage stabilizing module of voltage stabilizing processing.
6. IGBT drive circuit as claimed in claim 5, is characterized in that, described Voltage stabilizing module comprises a voltage stabilizing didoe; The negative electrode of described voltage stabilizing didoe is connected with the output of described drive control module, and is connected the plus earth of described voltage stabilizing didoe with the grid of described insulated gate bipolar transistor.
7. IGBT drive circuit as claimed in claim 6, is characterized in that, described Voltage stabilizing module also comprises the 5th resistance and the 6th resistance; Described the 5th one end of resistance and the output of described drive control module are connected, and described the 5th other end of resistance and the grid of described insulated gate bipolar transistor are connected, and via described the 6th grounding through resistance.
8. an electric pressure cooker, comprises master controller and coil panel, it is characterized in that, also comprises the IGBT drive circuit described in any one in claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320564963.5U CN203504407U (en) | 2013-09-11 | 2013-09-11 | Igbt drive circuit and electric pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320564963.5U CN203504407U (en) | 2013-09-11 | 2013-09-11 | Igbt drive circuit and electric pressure cooker |
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| CN203504407U true CN203504407U (en) | 2014-03-26 |
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| CN201320564963.5U Expired - Lifetime CN203504407U (en) | 2013-09-11 | 2013-09-11 | Igbt drive circuit and electric pressure cooker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356754A (en) * | 2015-12-08 | 2016-02-24 | 玉林师范学院 | Switch power supply with tracking function and control method thereof |
| CN106488600A (en) * | 2015-08-25 | 2017-03-08 | 比亚迪股份有限公司 | Electromagnetic heater and its heating control circuit and control method |
| CN106559928A (en) * | 2015-09-28 | 2017-04-05 | 比亚迪股份有限公司 | Electromagnetic heater and its heating control circuit and control method |
| CN108631269A (en) * | 2017-03-20 | 2018-10-09 | 万国半导体(开曼)股份有限公司 | Smart Power Module for resonance inverter |
-
2013
- 2013-09-11 CN CN201320564963.5U patent/CN203504407U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106488600A (en) * | 2015-08-25 | 2017-03-08 | 比亚迪股份有限公司 | Electromagnetic heater and its heating control circuit and control method |
| CN106488600B (en) * | 2015-08-25 | 2019-11-22 | 比亚迪股份有限公司 | Electromagnetic heater and its heating control circuit and control method |
| CN106559928A (en) * | 2015-09-28 | 2017-04-05 | 比亚迪股份有限公司 | Electromagnetic heater and its heating control circuit and control method |
| CN105356754A (en) * | 2015-12-08 | 2016-02-24 | 玉林师范学院 | Switch power supply with tracking function and control method thereof |
| CN108631269A (en) * | 2017-03-20 | 2018-10-09 | 万国半导体(开曼)股份有限公司 | Smart Power Module for resonance inverter |
| CN108631269B (en) * | 2017-03-20 | 2020-12-08 | 万国半导体(开曼)股份有限公司 | Intelligent power module for resonant inverter |
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