CN207732627U - IGBT driving power supply with wide voltage input - Google Patents
IGBT driving power supply with wide voltage input Download PDFInfo
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Abstract
The utility model provides a wide voltage input's IGBT drive power supply, including primary power and secondary power, power input IN is connected to the primary power input, and secondary power input is connected to the primary power output, and the secondary power output does IGBT drive power supply's output OUT. The number of the secondary power supplies is two, the input ends of the two secondary power supplies are connected to the output end of the primary power supply, one ends of the output ends of the two secondary power supplies are connected and grounded, and the other ends of the output ends of the two secondary power supplies are respectively an output end OUT + and an output end OUT-of the IGBT driving power supply. The structure of the two-stage power supply is adopted, the input power supply voltage in a wide voltage range is firstly converted into two paths of secondary output voltages through the primary power supply adopting the push-pull circuit, high-voltage isolation is realized between the input voltage and the primary output voltage of the primary power supply, and the secondary power supply can meet the precision and power requirements of the output voltage in a wide input voltage range.
Description
Technical field
The utility model is related to flexible DC power transmission and applied power electronics technical field, more particularly to a kind of Width funtion is defeated
The IGBT driving powers entered.
Background technology
IGBT is a kind of power semiconductor of full-control type, it had both had the low advantage of bipolar device conduction voltage drop,
But also with the advantage that monopole type devices switch speed is fast, driving power is small.It is widely used in all kinds of mesohigh power inverters
In, such as frequency converter, fan converter, Switching Power Supply, towing gear etc..The shutdown of opening of IGBT drives dependent on IGBT
Circuit, driving circuit need very high reliability.
IGBT driving powers are the key components of IGBT drive circuit, and basic demand is：High electricity can be isolated in former pair side
Pressure, multiple-channel output voltage can ensure that necessary voltage accuracy and power requirement.Existing driving circuit usually has following two points insufficient：
Driving power input voltage range is narrow, may cause the damage of driving power beyond input voltage range under certain unusual service conditions
It is bad；When load short circuits occur, often will produce power supply damage, driving circuit fail the case where.This all reduces IGBT drivings
The reliability of circuit thereby reduces the reliability of entire power electronic equipment.For such case, the utility model proposes
A kind of IGBT driving powers of Width funtion input.
Invention content
In order to solve the problems, such as described in background technology, the utility model provides a kind of IGBT driving electricity of Width funtion input
Source, using the structure of two level power supplies, by the input supply voltage of wide-voltage range first through the primary source using push-pull circuit
Two-way secondary output voltage is converted to, high-voltage isolating is realized between the input voltage and primary output voltage of primary source, it is secondary
Level power supply can meet the precision and power requirement of output voltage in wider input voltage range.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of IGBT driving powers of Width funtion input, the IGBT driving powers include a primary source and two
Secondary power, primary source input terminal connection power input IN, primary source output end two secondary power input terminals of connection, two
One end of a secondary power output end is connected and is grounded, and the other end of the output end of two secondary powers is respectively IGBT drivings
The output end OUT+ and OUT- of power supply.
The circuit structure of the primary source is：Three terminal regulator U1 is sequentially connected by input terminal to output end, is recommended
Control chip U2, MOS switch pipe Q1, Q2 and transformer T1, the source electrode of two MOS switch pipes Q1, Q2 link together, and pass through inspection
Measuring resistance R1 is connected with power input cathode.
The circuit structure of the secondary power is：Decompression chip U3 and filtered electrical are sequentially connected by input terminal to output end
Feel L1.
In the circuit structure of the secondary power, it is also associated with electric resistance partial pressure between output end OUT+ and OUT- and returns
Road, the electric resistance partial pressure circuit is in series by upper resistance R2 and lower resistance R3, the voltage between output end OUT+ and OUT-
Power supply chip U3 is back to after electric resistance partial pressure loop voltage-distributing.
Compared with prior art, the utility model has the beneficial effects that：
1, the IGBT driving powers of a kind of Width funtion input of the utility model, using the structure of two level power supplies, by wide electricity
Primary source of the input supply voltage of range first through the push-pull circuit using fixed duty cycle is pressed to be converted to two-way secondary defeated
Go out voltage, realizes that high-voltage isolating, secondary power can be wider between the input voltage and primary output voltage of primary source
Input voltage range in meet the precision and power requirement of output voltage.
2, a kind of IGBT driving powers of Width funtion input of the utility model, the chip U1 in primary source are that three ends are steady
Depressor, input voltage are the U2 power supplies of primary source chip by three terminal regulator, it can be ensured that in wide input voltage range interior power
Chip U2 can be worked normally.
3, the IGBT driving powers of a kind of Width funtion input of the utility model, due to secondary power circuit band output voltage
Feedback function, thus the voltage accuracy of secondary output can be ensured in wide input voltage range.And chip U3 carries overcurrent
Defencive function, the circuit interlocking when load short circuits are resumed operation automatically after trouble shooting.
Description of the drawings
Fig. 1 is the two-stage topologies figure for the IGBT driving powers that a kind of Width funtion of the utility model inputs；
Fig. 2 is primary source principle schematic；
Fig. 3 is secondary power principle schematic.
In figure：IN- input voltages；VO1- first via primary output voltages；The second roads VO2- primary output voltage；OUT1-
First via secondary output voltage；The second roads OUT2- secondary output voltage；C1- primary source input capacitances；U1- three terminal regulators；
U2- primary sources control chip；Q1, Q2- power MOS pipe；R1- detection resistances；T1- pulse transformers；V1~V4, V6~V9-
Rectifier diode；C2, C3- primary source output capacitance；R2, R3- divider resistance；V5- fly-wheel diodes；L1- filter inductances；
C5- secondary power output capacitances.
Specific implementation mode
Specific implementation mode provided by the utility model is described in detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of IGBT driving powers of Width funtion input, the IGBT driving powers include a primary
Power supply and two secondary powers, primary source input terminal connect power input IN, and primary source output end connects two secondary electricals
One end of source input terminal, two secondary power output ends is connected and is grounded, the other end point of the output end of two secondary powers
Not Wei IGBT driving powers output end OUT+ and OUT-.
As shown in Fig. 2, the circuit structure of the primary source is：Three-terminal voltage-stabilizing is sequentially connected by input terminal to output end
Device U1, it control chip U2, MOS switch pipe Q1, Q2 and transformer T1, the source electrode of two MOS switch pipes Q1, Q2 is recommended is connected to one
It rises, is connected with power input cathode by detection resistance R1.
As shown in figure 3, the circuit structure of the secondary power is：Decompression chip is sequentially connected by input terminal to output end
U3 and filter inductance L1.
As shown in figure 3, in the circuit structure of the secondary power, electricity is also associated between output end OUT+ and OUT-
Hinder pressure divider circuit, the electric resistance partial pressure circuit is in series by upper resistance R2 and lower resistance R3, output end OUT+ and OUT- it
Between voltage power supply chip U3 is back to after electric resistance partial pressure loop voltage-distributing.
The primary source is the push-pull circuit of fixed duty cycle, and control chip, which can be used, typically recommends power supply core
Piece UCC2808.
As shown in Fig. 2, it is to recommend electricity by three terminal regulator U1 that primary source input terminal, which has input capacitance C1, input voltage,
Source chip U2 power supplies, the effect of three terminal regulator is that power supply chip power good is ensured in wide input voltage range.Power supply core
The two-way output of piece sends out drive signal, opens, turns off to two metal-oxide-semiconductors (Q1, Q2).The optional models of three terminal regulator U1：
TPS7401.Metal-oxide-semiconductor (Q1, Q2) optional model：IRF3710.
The source electrode of two metal-oxide-semiconductors is connected and connects input voltage cathode, the voltage on detection resistance R1 by detection resistance R1
Signal return is to power supply chip.Primary source is fed back without output voltage, thus two-way primary output voltage is unstable.
The transformer T1 is customization pulse transformer, and pulse transformer has 4 windings, including two primary side windings,
Two vice-side windings.The number of turns of the equal turn numbers of two windings of primary side, two windings in secondary side is also equal.Have enough between former pair side
High-voltage isolating ability.The non-same polarity of two windings of primary side is connected together with input voltage anode, two windings are remaining
Two non-same polarities be separately connected the drain electrodes of two metal-oxide-semiconductors.Two vice-side windings after two single-phase rectification bridges respectively by connecting
Two output capacitances (C2, C3) are connect, two-way primary output voltage (VO1, VO2) is formed.Customize the customization ginseng of pulse transformer T1
Number is：20W, 15V primary/one/15V times grade of 15V grade two.
As shown in figure 3, the secondary power is a kind of BUCK power circuits of feedback with voltage, control chip U3 can
Using typical BUCK power supply chips BD77G.Power supply chip is internally integrated metal-oxide-semiconductor, and output end connects fly-wheel diode V5, work(
Rate inductance L1.Power inductance L1 type selecting parameters are 220uH, 2A.Fly-wheel diode V5 type selectings are RB060MM.Divider resistance type selecting
Parameter is：R2：190K, R3：10K.
It is that secondary power exports OUT1 that primary source, which exports VO1 by secondary power circuit conversion, and primary source exports VO2
It is that secondary power exports OUT2, the anode of the cathode and output voltage OUT2 of output voltage OUT1 by secondary power circuit conversion
It is connected, is connected with the emitter of IGBT.
Positive levels of the output voltage OUT1+ of secondary power as drive signal, output voltage OUT2- is as drive signal
Negative level.
The input terminal of secondary power connects input capacitance C4, and output end connects output capacitance C5.Output voltage OUT1 is through electricity
It is back to BUCK power supply chips after resistance partial pressure.
A kind of operation principle of the IGBT driving powers of Width funtion input of the utility model is as follows：
1) primary source circuit theory explanation：Input voltage is the U2 power supplies of primary source chip by three terminal regulator, can
Ensure to work normally in wide input voltage range interior power chip U2.Power supply chip can send out the complementation of two-way fixed frequency
Metal-oxide-semiconductor drive signal respectively drives metal-oxide-semiconductor Q1, Q2.Two metal-oxide-semiconductors alternately open shutdown, if wherein Q1 pipes are open-minded, Q2 pipes close
Disconnected, then the winding that V1 pipes are connected can bear input voltage, and V2 pipes can bear twice of input voltage.The source of two metal-oxide-semiconductors
Pole links together, and is connected with input cathode by detection resistance R1, the electric current in Q1 pipes and Q2 pipes can all flow through detection resistance.
Voltage signal on detection resistance R1 can pass power supply chip pin back.When two winding alternate conductions of pulse transformer primary side,
Two, secondary side winding will produce the identical positive and negative alternate alternating impulse of two-way.Two-way alternating impulse is passed through into single-phase rectification bridge
Primary source output capacitance is inputted after (V1~V4, V6~V9) rectification, ultimately forms two-way primary output voltage (VO1, VO2).
2) secondary power circuit theory explanation：Since the range of input voltage is wider, and primary source is anti-without voltage
Feedback, therefore the two output voltage that primary source is generated is unstable.Therefore it needs primary output voltage passing through BUCK circuits
Be converted to secondary output voltage.Due to secondary BUCK circuits band output voltage feedback function, thus can be in wide input voltage model
The voltage accuracy of secondary output is ensured in enclosing.And BUCK chips carry overcurrent protection function, the circuit interlocking when load short circuits,
It resumes operation automatically after trouble shooting.As shown in Figure 3, chip U3 is typical BUCK circuit control chips, is internally integrated
Metal-oxide-semiconductor carries overcurrent protection function.Chip pin connects change of current diode (V5), filter inductance (L1).Secondary power output end
Connect output capacitance (C5).When internal metal-oxide-semiconductor is opened, electric current flows through filter inductance L1 injection output capacitance C5, due to BUCK
The input voltage of circuit is higher than output voltage, and the electric current in inductance can incrementally increase.When internal metal-oxide-semiconductor turns off, in inductance
Electric current bears negative pressure by 10 afterflow of sustained diode, inductance, and electric current is gradually reduced.After reaching equilibrium state, inductive current
Average value be equal to load current mean value.Output voltage feeds back to power supply chip U3 by divider resistance (R2, R3), to control
The output voltage precision of secondary power.
Above example is implemented under premised on technical solutions of the utility model, gives detailed embodiment
With specific operating process, but the scope of protection of the utility model is not limited to the above embodiments.Side used in above-described embodiment
Method is conventional method unless otherwise instructed.
Claims (4)
1. a kind of IGBT driving powers of Width funtion input, which is characterized in that the IGBT driving powers include a primary
Power supply and two secondary powers, primary source input terminal connect power input IN, and primary source output end connects two secondary electricals
One end of source input terminal, two secondary power output ends is connected and is grounded, the other end point of the output end of two secondary powers
Not Wei IGBT driving powers output end OUT+ and OUT-.
2. a kind of IGBT driving powers of Width funtion input according to claim 1, which is characterized in that the primary electrical
The circuit structure in source is：Three terminal regulator U1 is sequentially connected by input terminal to output end, recommends control chip U2, MOS switch pipe
Q1, Q2 and transformer T1, the source electrode of two MOS switch pipes Q1, Q2 link together, and pass through detection resistance R1 and power input
Cathode is connected.
3. a kind of IGBT driving powers of Width funtion input according to claim 1, which is characterized in that the secondary electrical
The circuit structure in source is：Decompression chip U3 and filter inductance L1 is sequentially connected by input terminal to output end.
4. a kind of IGBT driving powers of Width funtion input according to claim 3, which is characterized in that in the secondary
In the circuit structure of power supply, electric resistance partial pressure circuit, the electric resistance partial pressure circuit are also associated between output end OUT+ and OUT-
In series by upper resistance R2 and lower resistance R3, the voltage between output end OUT+ and OUT- returns after electric resistance partial pressure loop voltage-distributing
Reach power supply chip U3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721725384.9U CN207732627U (en) | 2017-12-12 | 2017-12-12 | IGBT driving power supply with wide voltage input |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721725384.9U CN207732627U (en) | 2017-12-12 | 2017-12-12 | IGBT driving power supply with wide voltage input |
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| CN207732627U true CN207732627U (en) | 2018-08-14 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501625A (en) * | 2019-09-12 | 2019-11-26 | 荣信汇科电气技术有限责任公司 | A kind of IGBT saturation tube voltage drop on-line measurement circuit |
| CN111628635A (en) * | 2020-06-19 | 2020-09-04 | 西安微电子技术研究所 | Output isolation power supply driving circuit and method |
| CN113067478A (en) * | 2020-01-02 | 2021-07-02 | 中车株洲电力机车研究所有限公司 | Power supply device and power module driving system |
| CN114142724A (en) * | 2021-11-03 | 2022-03-04 | 华为技术有限公司 | Power supply system, voltage setting device, voltage setting method and communication system |
-
2017
- 2017-12-12 CN CN201721725384.9U patent/CN207732627U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501625A (en) * | 2019-09-12 | 2019-11-26 | 荣信汇科电气技术有限责任公司 | A kind of IGBT saturation tube voltage drop on-line measurement circuit |
| CN110501625B (en) * | 2019-09-12 | 2024-03-08 | 荣信汇科电气股份有限公司 | On-line measuring circuit for voltage drop of IGBT saturation tube |
| CN113067478A (en) * | 2020-01-02 | 2021-07-02 | 中车株洲电力机车研究所有限公司 | Power supply device and power module driving system |
| CN111628635A (en) * | 2020-06-19 | 2020-09-04 | 西安微电子技术研究所 | Output isolation power supply driving circuit and method |
| CN114142724A (en) * | 2021-11-03 | 2022-03-04 | 华为技术有限公司 | Power supply system, voltage setting device, voltage setting method and communication system |
| CN114142724B (en) * | 2021-11-03 | 2024-04-12 | 华为技术有限公司 | Power supply system, voltage setting device, voltage setting method and communication system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 114000 212 Yue Ling Road, Anshan, Liaoning Patentee after: Rongxin Huike Electric Co.,Ltd. Patentee after: China South Power Grid International Co.,Ltd. Patentee after: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Address before: 114000 212 Yue Ling Road, Anshan, Liaoning Patentee before: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. Patentee before: China South Power Grid International Co.,Ltd. Patentee before: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |