CN204168122U - A kind of New IGBT Bootstrapping drive circuit - Google Patents
A kind of New IGBT Bootstrapping drive circuit Download PDFInfo
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- CN204168122U CN204168122U CN201420686417.3U CN201420686417U CN204168122U CN 204168122 U CN204168122 U CN 204168122U CN 201420686417 U CN201420686417 U CN 201420686417U CN 204168122 U CN204168122 U CN 204168122U
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- filter capacitor
- drive circuit
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Abstract
The utility model belongs to electric and electronic technical field, provides a kind of New IGBT Bootstrapping drive circuit, comprises bridge circuit and comprises Bootstrapping drive circuit, the first drive circuit and the first IGBT module; Lower bridge circuit comprises the second drive circuit and the second IGBT module, and the second drive circuit and the second IGBT module are connected in series; First drive circuit comprises the first switching diode, second switch diode, the first voltage-stabiliser tube, the first driving resistance, the second driving resistance, the first inductance, the first filter capacitor, the second filter capacitor; Second drive circuit comprises the 3rd switching diode, the 4th switching diode, the second voltage-stabiliser tube, the 3rd driving resistance, four-wheel drive resistance, the second inductance, the 3rd filter capacitor, the 4th filter capacitor, the first independent voltage DC power supply.The utility model has the Miller effect occurred when suppressing IGBT to turn off, and prevents gate pole from misleading, turn-off time short, fireballing advantage.
Description
Technical field
The utility model belongs to electric and electronic technical field, particularly a kind of New IGBT Bootstrapping drive circuit.
Background technology
The application of a series of high-power switch tubes as modules such as IPM, PIM being core with IGBT semiconductor is more and more extensive, no matter electric family, the industry even all application scenarios relating to power converter of military field, IGBT device all plays important switch role, and its reliability depends on the reliability of drive circuit.Although more and more ripe in IGBT Driving technique, but in the application product that some cost requirements are very harsh, for saving Switching Power Supply cost, saving PCB surface is amassed, have to adopt the Bootstrapping drive circuit mode of single supply realize multiple not altogether the IGBT drive circuit on ground power, exist according to the intrinsic feature of IGBT self, problems such as causing the charge and discharge phenomena of miller capacitance, output harmonic wave increases, the turn-off time is long, speed is slow.
Therefore, electric and electronic technical field is badly in need of a kind of the Miller effect of appearance when IGBT can be suppressed to turn off, prevents gate pole from misleading, turn-off time short, fireballing New IGBT Bootstrapping drive circuit.
Summary of the invention
The utility model provides a kind of New IGBT Bootstrapping drive circuit, and technical scheme is as follows:
A kind of New IGBT Bootstrapping drive circuit, comprise bridge circuit and lower bridge circuit, upper bridge circuit is connected with lower bridge circuit;
Upper bridge circuit comprises Bootstrapping drive circuit, the first drive circuit and the first IGBT module, and is sequentially connected in series;
Lower bridge circuit comprises the second drive circuit and the second IGBT module, and the second drive circuit and the second IGBT module are connected in series;
First drive circuit comprises the first switching diode, second switch diode, first voltage-stabiliser tube, first drives resistance, second drives resistance, first inductance, first filter capacitor, second filter capacitor, and first drives resistance and second switch Diode series to form the first structure member, second drives resistance and the first inductance to be composed in series the second structure member, first structure member and the second structural member, first switching diode, second filter capacitor, first voltage-stabiliser tube respectively rear one end in parallel is connected with the first filter capacitor, the other end is connected with the first IGBT module, first filter capacitor is connected with Bootstrapping drive circuit,
Second drive circuit comprises the 3rd switching diode, 4th switching diode, second voltage-stabiliser tube, 3rd drives resistance, four-wheel drive resistance, second inductance, 3rd filter capacitor, 4th filter capacitor, first independent voltage DC power supply, and the 3rd filter capacitor and the 3rd switching diode are composed in series the 3rd structure member, 3rd drives resistance and the 4th switching diode to be composed in series the 4th structure member, four-wheel drive resistance and the second inductance are composed in series the 5th structure member, 3rd structure member and the 4th structure member, 5th structure member, 4th filter capacitor, second voltage-stabiliser tube respectively rear one end in parallel is connected with the first independent voltage DC power supply, the other end is connected with the second IGBT module.
A kind of New IGBT Bootstrapping drive circuit as above, wherein, upper bridge circuit also comprises the first optocoupler Bootstrapping drive circuit, optocoupler, the 5th filter capacitor, the second independent voltage DC power supply is driven to form by first, and first drives the signal output pin of optocoupler to be connected to the first driving resistance and second drives resistance common port, and connects with the second independent voltage DC power supply after the 5th filter capacitor in parallel between signal input pin 1 and 3 pin of the first driving optocoupler again.
A kind of New IGBT Bootstrapping drive circuit as above, wherein, lower bridge circuit also comprises the second optocoupler Bootstrapping drive circuit, optocoupler, the 6th filter capacitor, the 3rd independent voltage DC power supply is driven to form by second, and second drives the signal output pin of optocoupler to be connected to the 3rd drives resistance and four-wheel drive resistance common port, and connects with the 3rd independent voltage DC power supply after the 6th filter capacitor in parallel between signal input pin 1 and 3 pin of the second driving optocoupler again.
A kind of New IGBT Bootstrapping drive circuit as above, wherein, Bootstrapping drive circuit also comprises the 4th independent voltage DC power supply, the 5th and drives resistance, the 7th filter capacitor, the 8th filter capacitor and the 5th switching diode, and the 7th filter capacitor and the 5th drives resistance, the 5th switching diode is connected, one end of 4th independent voltage DC power supply is connected to the 7th filter capacitor and the 5th and drives between resistance, one end of 5th switch diode is connected between the first switching diode and the first filter capacitor, and the 8th filter capacitor is in parallel with the first filter capacitor.
A kind of New IGBT Bootstrapping drive circuit as above, wherein, first, second, third, fourth independent voltage DC power supply is all Switching Power Supply.
The beneficial effects of the utility model:
1, the utility model is arranged at the first inductance L 1 and the second inductance L 2 on the first drive circuit and the second drive circuit, when signal is opened in optocoupler output, make to open signal waveform upstroke slope through the effect of the second inductance L 2 to diminish, drive rising slack-off, IGBT module output waveform harmonic component is reduced.
2, the utility model arranges the first driving resistance on the first drive circuit and the second drive circuit, second drives resistance, second switch diode and the 3rd drives resistance, four-wheel drive resistance, 4th switching diode, when optocoupler exports cut-off signals, be in zero potential state, second switch diode and the 4th switching diode conducting, the first driving resistance and second is made to drive resistor coupled in parallel, 3rd drives resistance and four-wheel drive resistor coupled in parallel, loop resistance is diminished, now can reduce the IGBT module turn-off time, thus reduce IGBT turn-off power loss and heating, be conducive to improving IGBT useful life.
3, the utility model arranges the first switching diode, the first voltage-stabiliser tube and the 3rd switching diode, the second voltage-stabiliser tube on the first drive circuit and the second drive circuit, composition two-diode clamp circuit, when IGBT module turns off, can the gate high-voltage that causes of clamper the Miller effect, prevent gate pole from misleading.
Accompanying drawing explanation
The utility model is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the circuit diagram of a kind of New IGBT Bootstrapping drive circuit of the utility model.
Embodiment
In order to the utility model technology is realized measure, creation characteristic, reach object and effect is easy to understand, below in conjunction with concrete diagram, set forth the utility model further.
Fig. 1 is the circuit diagram of a kind of New IGBT Bootstrapping drive circuit of the utility model.
As shown in Figure 1, a kind of New IGBT Bootstrapping drive circuit, comprise bridge circuit and lower bridge circuit, upper bridge circuit is connected with lower bridge circuit, upper bridge circuit comprises Bootstrapping drive circuit 1, first drive circuit 2 and the first IGBT module 3, and is sequentially connected in series, lower bridge circuit comprises the second drive circuit 4 and the second IGBT module 5, and the second drive circuit 4 and the second IGBT module 5 are connected in series, first drive circuit 2 comprises the first switching diode D2, second switch diode D3, first voltage-stabiliser tube ZD101, first drives resistance R2, second drives resistance R3, first inductance L 1, first filter capacitor C4, second filter capacitor C5, and first drives resistance R2 and second switch diode D3 to be composed in series the first structure member, second drives resistance R3 and the first inductance L 1 to be composed in series the second structure member, first structure member and the second structural member, first switching diode D3, second filter capacitor C5, first voltage-stabiliser tube ZD101 respectively rear one end in parallel connects with the first filter capacitor C4, the other end is connected with the first IGBT module 3, first filter capacitor C4 connects with Bootstrapping drive circuit 1, second drive circuit 4 comprises the 3rd switching diode D4, 4th switching diode D5, second voltage-stabiliser tube ZD102, 3rd drives resistance R4, four-wheel drive resistance R5, second inductance L 2, 3rd filter capacitor C7, 4th filter capacitor C8, first independent voltage DC power supply P16F1, and the 3rd filter capacitor C7 and the 3rd switching diode D4 is composed in series the 3rd structure member, 3rd drives resistance R4 and the 4th switching diode D5 to be composed in series the 4th structure member, four-wheel drive resistance R5 and the second inductance L 2 are composed in series the 5th structure member, 3rd structure member and the 4th structure member, 5th structure member, 4th filter capacitor C7, second voltage-stabiliser tube ZD102 respectively rear one end in parallel connects with the first independent voltage DC power supply P16F1, the other end is connected with the second IGBT module 5.
Preferably, upper bridge circuit in the present embodiment also comprises the first optocoupler Bootstrapping drive circuit 6, be made up of the first driving optocoupler PC1, the 5th filter capacitor C2, the second independent voltage DC power supply P5F, and first drives the signal output pin of optocoupler PC1 to be connected to the first driving resistance R2 and second drives resistance R3 common port, and connects with the second independent voltage DC power supply P5F1 after a 5th filter capacitor C2 in parallel between signal input pin 1 and 3 pin of the first driving optocoupler PC1 again.
Preferably, lower bridge circuit in the present embodiment also comprises the second optocoupler Bootstrapping drive circuit 7, be made up of the second driving optocoupler PC2, the 6th filter capacitor C6, the 3rd independent voltage DC power supply P5F2, and second drives the signal output pin of optocoupler PC2 to be connected to the 3rd drives resistance R4 and four-wheel drive resistance R5 common port, and connect with the 3rd independent voltage DC power supply P5F2 again after a 6th filter capacitor C6 in parallel between signal input pin 1 and 3 pin of the second driving optocoupler PC2.
Preferably, Bootstrapping drive circuit 1 in the present embodiment also comprises the 4th independent voltage DC power supply P16F2, 5th drives resistance R1, 7th filter capacitor C1, 8th filter capacitor C3 and the 5th switching diode D1, and the 7th filter capacitor C1 and the 5th drives resistance R1, 5th switching diode series connection D1, one end of 4th independent voltage DC power supply P16F2 is connected to the 7th filter capacitor C1 and the 5th and drives between resistance R1, one end of 5th switch diode D1 is connected between the first switching diode D2 and the first filter capacitor C4, 8th filter capacitor C3 is in parallel with the first filter capacitor C4.
Preferably, first, second, third, fourth independent voltage DC power supply P16F1, P5F1, P5F2, P16F2 are Switching Power Supply.
When the utility model is started working, first turned off by upper bridge circuit, lower bridge circuit is opened, the second IGBT module 3 conducting, and the 4th independent voltage DC power supply P16F2 drives resistance R1 and the 5th switch voltage-stabilizing pipe D1 to charge to the 8th filter capacitor C3 by the 5th; Further, optocoupler exports and opens the effect of signal through the second inductance L 2, makes to open signal waveform upstroke slope and diminishes, and drives rising slack-off, IGBT module output waveform harmonic component is reduced.
When upper bridge circuit is open-minded, when lower bridge circuit has just started to turn off, the 5th filter capacitor C2 starts electric discharge, drives optocoupler PC1 to power to first, namely achieves bootstrapping and drives function; U point high voltage when second IGBT module 5 turns off further, then the 4th switching diode D5 conducting, the 3rd is made to drive resistance R4 and four-wheel drive resistance R5 in parallel, resistance reduces, under this second IGBT module 5 zero potential shutoff mode, accelerate the turn-off speed of the second IGBT module 5, reduce the second IGBT module 5 turn-off power loss and the degree of heat, extended for second IGBT module 5 useful life.The second last voltage-stabiliser tube ZD102 and the 3rd switching diode D4 forms bipolar tube clamp circuit, to limit the Miller effect produced when the second IGBT module 5 turns off, slows down the high voltage of generation, effectively prevents misleading of the second IGBT module 5.
The utility model is arranged at the first inductance L 1 and the second inductance L 2 on the first drive circuit and the second drive circuit, when signal is opened in optocoupler output, make to open signal waveform upstroke slope through the effect of the second inductance L 2 to diminish, drive rising slack-off, IGBT module output waveform harmonic component is reduced.
The utility model arranges the first driving resistance on the first drive circuit and the second drive circuit, second drives resistance, second switch diode and the 3rd drives resistance, four-wheel drive resistance, 4th switching diode, when optocoupler exports cut-off signals, be in zero potential state, second switch diode and the 4th switching diode conducting, the first driving resistance and second is made to drive resistor coupled in parallel, 3rd drives resistance and four-wheel drive resistor coupled in parallel, loop resistance is diminished, now can reduce the IGBT module turn-off time, thus reduce IGBT turn-off power loss and heating, be conducive to improving IGBT useful life.
The utility model arranges the first switching diode, the first voltage-stabiliser tube and the 3rd switching diode, the second voltage-stabiliser tube on the first drive circuit and the second drive circuit, composition two-diode clamp circuit, when IGBT module turns off, can the gate high-voltage that causes of clamper the Miller effect, prevent gate pole from misleading.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a New IGBT Bootstrapping drive circuit, is characterized in that, comprises bridge circuit and lower bridge circuit, and described upper bridge circuit is connected with lower bridge circuit;
Described upper bridge circuit comprises Bootstrapping drive circuit, the first drive circuit and the first IGBT module, and is sequentially connected in series;
Described lower bridge circuit comprises the second drive circuit and the second IGBT module, and described second drive circuit and the second IGBT module are connected in series;
Described first drive circuit comprises the first switching diode, second switch diode, first voltage-stabiliser tube, first drives resistance, second drives resistance, first inductance, first filter capacitor, second filter capacitor, and described first drives resistance and second switch Diode series to form the first structure member, described second drives resistance and the first inductance to be composed in series the second structure member, described first structure member and the second structural member, first switching diode, second filter capacitor, first voltage-stabiliser tube respectively rear one end in parallel is connected with the first filter capacitor, the other end is connected with described first IGBT module, described first filter capacitor is connected with Bootstrapping drive circuit,
Described second drive circuit comprises the 3rd switching diode, 4th switching diode, second voltage-stabiliser tube, 3rd drives resistance, four-wheel drive resistance, second inductance, 3rd filter capacitor, 4th filter capacitor, first independent voltage DC power supply, and described 3rd filter capacitor and the 3rd switching diode are composed in series the 3rd structure member, described 3rd drives resistance and the 4th switching diode to be composed in series the 4th structure member, described four-wheel drive resistance and the second inductance are composed in series the 5th structure member, described 3rd structure member and the 4th structure member, 5th structure member, 4th filter capacitor, second voltage-stabiliser tube respectively rear one end in parallel is connected with the first independent voltage DC power supply, the other end is connected with described second IGBT module.
2. a kind of New IGBT Bootstrapping drive circuit according to claim 1, it is characterized in that, described upper bridge circuit also comprises the first optocoupler Bootstrapping drive circuit, optocoupler, the 5th filter capacitor, the second independent voltage DC power supply is driven to form by first, and described first drives the signal output pin of optocoupler to be connected to the first driving resistance and second drives resistance common port, and connects with the second independent voltage DC power supply after the 5th filter capacitor in parallel between signal input pin 1 and 3 pin of described first driving optocoupler again.
3. a kind of New IGBT Bootstrapping drive circuit according to claim 2, it is characterized in that, described lower bridge circuit also comprises the second optocoupler Bootstrapping drive circuit, optocoupler, the 6th filter capacitor, the 3rd independent voltage DC power supply is driven to form by second, and described second drives the signal output pin of optocoupler to be connected to the 3rd drives resistance and four-wheel drive resistance common port, and connect with the 3rd independent voltage DC power supply again after the 6th filter capacitor in parallel between signal input pin 1 and 3 pin of described second driving optocoupler.
4. a kind of New IGBT Bootstrapping drive circuit according to claim 3, it is characterized in that, described Bootstrapping drive circuit also comprises the 4th independent voltage DC power supply, 5th drives resistance, 7th filter capacitor, 8th filter capacitor and the 5th switching diode, and described 7th filter capacitor and the 5th drives resistance, 5th switching diode series connection, one end of 4th independent voltage DC power supply is connected to the 7th filter capacitor and the 5th and drives between resistance, one end of described 5th switch diode is connected between the first switching diode and the first filter capacitor, described 8th filter capacitor is in parallel with the first filter capacitor.
5. a kind of New IGBT Bootstrapping drive circuit according to claim 4, is characterized in that, described first, second, third, fourth independent voltage DC power supply is all Switching Power Supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420686417.3U CN204168122U (en) | 2014-11-17 | 2014-11-17 | A kind of New IGBT Bootstrapping drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420686417.3U CN204168122U (en) | 2014-11-17 | 2014-11-17 | A kind of New IGBT Bootstrapping drive circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204168122U true CN204168122U (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420686417.3U Expired - Fee Related CN204168122U (en) | 2014-11-17 | 2014-11-17 | A kind of New IGBT Bootstrapping drive circuit |
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| CN (1) | CN204168122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117458842A (en) * | 2023-12-26 | 2024-01-26 | 华羿微电子股份有限公司 | Half-bridge driving circuit |
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2014
- 2014-11-17 CN CN201420686417.3U patent/CN204168122U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117458842A (en) * | 2023-12-26 | 2024-01-26 | 华羿微电子股份有限公司 | Half-bridge driving circuit |
| CN117458842B (en) * | 2023-12-26 | 2024-03-08 | 华羿微电子股份有限公司 | Half-bridge driving circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20191117 |