CN206060708U - A kind of IGBT drive signals transmission circuit - Google Patents
A kind of IGBT drive signals transmission circuit Download PDFInfo
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- CN206060708U CN206060708U CN201621024712.8U CN201621024712U CN206060708U CN 206060708 U CN206060708 U CN 206060708U CN 201621024712 U CN201621024712 U CN 201621024712U CN 206060708 U CN206060708 U CN 206060708U
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Abstract
This utility model is related to a kind of IGBT drive signals transmission circuit, including signal source, the signal source is used to produce single-ended signal, and the outfan of the signal source is connected with the input of differential conversion circuit, and the single-ended signal for receiving is converted to differential signal by the differential conversion circuit；The outfan of the differential conversion circuit is connected with the input of single-ended signal change-over circuit, and the single-ended signal change-over circuit is for being converted to reverse single-ended signal by the differential signal for receiving；The outfan of the single-ended signal change-over circuit is connected with the drive end of IGBT driving chips.This utility model can strengthen interference free performance, increase drive ability, while producing less electromagnetic interference.
Description
Technical field
This utility model is related to IGBT actuation techniques field, more particularly to a kind of IGBT drive signals transmission circuit.
Background technology
IGBT (Insulated Gate Bipolar Transistor), insulated gate bipolar transistor is (double by BJT
Polarity audion) and the compound full control voltage drive-type power semiconductors that constitute of MOS (insulating gate type field effect tube), and
Have MOSFET high input impedance and GTR low conduction voltage drop of both advantage.GTR saturation pressures are reduced, and current carrying density is big, but
Driving current is larger；MOSFET driving power very littles, switching speed are fast, but conduction voltage drop is big, and current carrying density is little.IGBT is combined
The advantage of both the above device, with altofrequency, high voltage, high current, the performance characteristics for especially easily turning on and off, be
The most representational product of generally acknowledged Power Electronic Technique third time revolution, has evolved to the 6th generation, business so far in the world
Industry had developed to for the 5th generation.At present, IGBT is widely used in the every profession and trade of national economy.
The low frequency signal of IGBT is transmitted using single ended mode at present, and this transmission means interference free performance is poor, can receive
To the conforming impact on earth potential difference and ground, and in long-distance transmissions, pressure drop on wire, is had, affect driving force.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of IGBT drive signals transmission circuit, strengthens anti-interference
Performance, increases drive ability, while producing less electromagnetic interference.
This utility model solves the technical scheme adopted by its technical problem：A kind of IGBT drive signals transmission electricity is provided
Road, including signal source, the signal source are used to produce single-ended signal, and the outfan of the signal source is defeated with differential conversion circuit
Enter end to be connected, the single-ended signal for receiving is converted to differential signal by the differential conversion circuit；The differential conversion circuit it is defeated
Go out end to be connected with the input of single-ended signal change-over circuit, the single-ended signal change-over circuit is for by the differential signal for receiving turn
It is changed to reverse single-ended signal；The outfan of the single-ended signal change-over circuit is connected with the drive end of IGBT driving chips.
The differential conversion circuit is realized using differential converter.
The single-ended signal change-over circuit includes transformator, single-ended signal transducer；The input and difference of the transformator
The outfan of change-over circuit is divided to be connected, the outfan of the transformator is connected with the input of single-ended signal transducer；The list
The outfan of end signal transducer is connected with the drive end of IGBT driving chips.
RC filter circuits are additionally provided between the input of the transformator and single-ended signal transducer.
Beneficial effect
As a result of above-mentioned technical scheme, this utility model compared with prior art, has the following advantages that and accumulates
Pole effect：The single-ended signal that signal source sends is converted into differential signal and is transmitted by this utility model, at driving chip end, and
Differential signal is converted into into reverse single-ended signal, interference free performance is enhanced, drive ability is increased, while producing less
Electromagnetic interference.
Description of the drawings
Fig. 1 is block diagram of the present utility model；
Fig. 2 is the circuit diagram of the differential converter in this utility model；
Fig. 3 is the circuit diagram of single-ended signal transducer in this utility model.
Specific embodiment
With reference to specific embodiment, this utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than restriction scope of the present utility model.In addition, it is to be understood that in the content for having read this utility model instruction
Afterwards, those skilled in the art can be made various changes or modifications to this utility model, and these equivalent form of values equally fall within this Shen
Please appended claims limited range.
Embodiment of the present utility model is related to a kind of IGBT drive signals transmission circuit, as shown in figure 1, including signal
Source, the signal source are used to produce single-ended signal, and the outfan of the signal source is connected with the input of differential conversion circuit, institute
State differential conversion circuit and the single-ended signal for receiving is converted to into differential signal；The outfan of the differential conversion circuit and single-ended letter
The input of number change-over circuit is connected, and the single-ended signal change-over circuit is reversely single-ended for the differential signal for receiving is converted to
Signal；The outfan of the single-ended signal change-over circuit is connected with the drive end of IGBT driving chips.Wherein, the differential conversion
Circuit is realized using differential converter.Signaling conversion circuit of the single-ended signal change-over circuit for double-width grinding Single-end output.
Shown in Fig. 2 is the circuit diagram of the differential converter in this utility model, and the differential converter is that four inputs eight are defeated
The differential converter for going out, wherein, the 1st pin of chip U5, the 7th pin, the 9th pin and the 15th pin correspond to four inputs respectively
End, the 2nd pin and the 3rd pin are two outfans corresponding to first input end UN, and the 5th pin and the 6th pin are second defeated
Enter to hold two outfans corresponding to VN, the 10th pin and the 11st pin to be corresponding two outfans of the 3rd input WN, the
13 pins and the 14th pin are the outfan corresponding to the 4th input BRK.Wherein, each input passes through a drop-down electricity
Resistance is connected to the ground.4th pin of chip U5 and the 12nd pin are connected with the enable outfan EN of controller for chip Enable Pin.It is single
End signal is converted to differential signal after chip U5, symmetry and negative feedback work of the differential converter using circuit parameter
With effectively stable quiescent point, can offset interference of the external environment to signal.
Shown in Fig. 3 is the circuit diagram of single-ended signal transducer in this utility model, and the single-ended signal change-over circuit is
The signaling conversion circuit of double-width grinding Single-end output, wherein, differential signal respectively enters chip U50's after transformator L15
The outfan RO of input A and input B, chip U50 produces the single-ended signal anti-phase with the single-ended signal of signal source generation, should
Anti-phase single-ended signal is used to drive IGBT driving chips.As shown in figure 3, between the input of transformator L15 and chip U50
It is additionally provided with a RC filter circuit.
It is seen that, the single-ended signal that signal source sends is converted into differential signal and is transmitted by this utility model, is being driven
Dynamic die terminals, and differential signal is converted into into reverse single-ended signal, interference free performance is enhanced, drive ability is increased,
Produce less electromagnetic interference simultaneously.
Claims (4)
1. a kind of IGBT drive signals transmission circuit, including signal source, the signal source are used to produce single-ended signal, and its feature exists
In the outfan of the signal source is connected with the input of differential conversion circuit, and the differential conversion circuit is single-ended by what is received
Signal is converted to differential signal；The outfan of the differential conversion circuit is connected with the input of single-ended signal change-over circuit, institute
Single-ended signal change-over circuit is stated for the differential signal for receiving is converted to reverse single-ended signal；The single-ended signal change-over circuit
Outfan be connected with the drive end of IGBT driving chips.
2. IGBT drive signals transmission circuit according to claim 1, it is characterised in that the differential conversion circuit is adopted
Differential converter is realized.
3. IGBT drive signals transmission circuit according to claim 1, it is characterised in that the single-ended signal change-over circuit
Including transformator, single-ended signal transducer；The input of the transformator is connected with the outfan of differential conversion circuit, the change
The outfan of depressor is connected with the input of single-ended signal transducer；The outfan of the single-ended signal transducer is driven with IGBT
The drive end of chip is connected.
4. IGBT drive signals transmission circuit according to claim 3, it is characterised in that the transformator and single-ended signal
RC filter circuits are additionally provided between the input of transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621024712.8U CN206060708U (en) | 2016-08-31 | 2016-08-31 | A kind of IGBT drive signals transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621024712.8U CN206060708U (en) | 2016-08-31 | 2016-08-31 | A kind of IGBT drive signals transmission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206060708U true CN206060708U (en) | 2017-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621024712.8U Active CN206060708U (en) | 2016-08-31 | 2016-08-31 | A kind of IGBT drive signals transmission circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN206060708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653566A (en) * | 2022-03-25 | 2022-06-24 | 广州市弘健生物医用制品科技有限公司 | Ultrasonic biomaterial welding machine and ultrasonic biomaterial welding method |
-
2016
- 2016-08-31 CN CN201621024712.8U patent/CN206060708U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653566A (en) * | 2022-03-25 | 2022-06-24 | 广州市弘健生物医用制品科技有限公司 | Ultrasonic biomaterial welding machine and ultrasonic biomaterial welding method |
| CN114653566B (en) * | 2022-03-25 | 2023-03-14 | 广州市弘健生物医用制品科技有限公司 | Ultrasonic biomaterial welding machine and ultrasonic biomaterial welding method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 315800 No. 308, Xiaogang Anju Road, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo Feishi Technology Co., Ltd Address before: 315800 No. 55, Putuo mountain road, Beilun District, Zhejiang, Ningbo Patentee before: Phase Motion Control Ningbo Ltd. |