CN109347310A - A kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI - Google Patents
A kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI Download PDFInfo
- Publication number
- CN109347310A CN109347310A CN201811480532.4A CN201811480532A CN109347310A CN 109347310 A CN109347310 A CN 109347310A CN 201811480532 A CN201811480532 A CN 201811480532A CN 109347310 A CN109347310 A CN 109347310A
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- resistance
- capacitor
- common mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001629 suppression Effects 0.000 title claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 5
- 230000036772 blood pressure Effects 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 47
- 239000003381 stabilizer Substances 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 230000009514 concussion Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Amplifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
A kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI, including surge restraint circuit and EMI filter circuit, surge restraint circuit includes power supply circuit, square wave generation circuit, N-type switch mosfet circuit, and N-type switch mosfet circuit includes boostrap circuit；Power supply circuit is used to after carrying out busbar voltage lowering and stabilizing blood pressure power to operational amplifier；Square wave generation circuit generates square-wave signal and is supplied to boostrap circuit；N-type switch mosfet circuit, rectifies square-wave signal by boostrap circuit and increasing gate source voltage opens N-type MOSFET；EMI filter circuit includes that common mode filtering circuit and differential mode filter circuit are used to filter out the superposition N-type MOSFET leakage generated in DC/DC power supply common mode, differential mode noise and boostrap circuit, source electrode noise.The present invention can not only effectively inhibit self-noise, and DC losses are small, high-efficient, and can filter out to the EMI noise of DC/DC power supply, can also effectively reduce power-on surge current, improve the Performance And Reliability of equipment power supply.
Description
Technical field
The present invention relates to power electronic equipment systems technology fields, and in particular to one kind is suitable for DC/DC power supply and combines wave
Gush the circuit of inhibition and EMI filtering.
Background technique
Power supply system is indispensable component part in various electronic equipments, development and system collection with military hardware
The working environment of the raising of Cheng Du, electronic equipment becomes increasingly complex, wherein the EMI noise of internal system and power-on surge current band
The influence come is especially prominent, is related to complete machine working performance and service life.Core member device of the DC/DC power supply as power supply system
The surge that part, the EMI noise for inhibiting it to generate and booting moment generate needs to design corresponding EMI filter circuit and Surge suppression
Circuit.Common solution is surge restraint circuit and EMI filtering of the input terminal concatenation based on MOSFET in DC/DC power supply
Device, but this simple concatenation can bring two problems: and 1. input main tracks are using p-type MOSFET surge restraint circuit in over-voltage wave
When gushing, output voltage shakes, conducting resistance is big, low efficiency；2. inputting ground wire using the surge circuit of N-type MOSFET in primary and secondary
When ground is shorted, MOSFET normal open causes surge circuit to fail.Therefore, it is necessary to integrate surge restraint circuit and EMI filter circuit
Design, to reach solution above-mentioned two problems, while can effectively inhibit DC/DC power supply noise again, improve installation electromagnetical compatibility
The purpose of energy.
Summary of the invention
A kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI proposed by the present invention, can solve tradition
Surge restraint circuit and EMI filtering based on MOSFET are concatenated in the input terminal of DC/DC power supply when inhibiting EMI noise and surge
Device, there is technical issues that output voltage concussion, conducting resistance it is big,.
To achieve the above object, the invention adopts the following technical scheme:
A kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI, including surge restraint circuit and EMI filtering
Circuit；
The surge restraint circuit includes power supply circuit, square wave generation circuit, the N-type switch mosfet circuit with boostrap circuit；
Power supply circuit is used to after carrying out busbar voltage lowering and stabilizing blood pressure power to operational amplifier；The square wave generation circuit generates square wave
Signal is supplied to boostrap circuit；The N-type switch mosfet circuit with boostrap circuit, by boostrap circuit to square-wave signal into
Row rectifies and increasing gate source voltage opens N-type MOSFET, reaches that DC voltage is slow to open purpose.
The EMI filter circuit includes common mode filtering circuit and differential mode filter circuit, and common mode and differential mode filter circuit are used for
Filter out the superposition N-type MOSFET leakage generated in DC/DC power supply common mode, differential mode noise and boostrap circuit, source electrode noise.
Further, the power supply circuit include diode V1, voltage-stabiliser tube V2, power switch transistor V3, resistance R1 and
Capacitor C1；The resistance R1, diode V1 and voltage-stabiliser tube V2 be sequentially connected in series common mode inductance output plus terminal and output negative terminal it
Between, the base stage of the power switch transistor V3 connects at the node that resistance R1 is connected with diode V1, and the collector of V3 is together
The output plus terminal of mould inductance L1 connects, and the emitter of V3 is connect with the power supply anode of capacitor C1 and operational amplifier N1.
Further, the square wave generation circuit includes operational amplifier N1, resistance R2, R3, R4, R5, R6 and capacitor C2；
The positive input of the operational amplifier N1 is connected with resistance R2, R3, R5, reverse input end and resistance R6 and capacitor C2 phase
Even；The output end of the operational amplifier N1 is connected by capacitor C3 with the input terminal of boostrap circuit；The resistance R2 and R3 string
It connects between the power supply anode of operational amplifier N1 and ground terminal；The resistance R4 connects in the power supply anode of operational amplifier N1 and output
Between end；The resistance R5 connects between the positive input and output end of operational amplifier N1；The resistance R6 connects in operation
Between the reverse input end and output end of amplifier N1.
Further, the N-type switch mosfet circuit with boostrap circuit includes diode V5, V6, resistance R7, capacitor
The V4 of C4 and N-type MOSFET；The positive grade of the diode V5 is connected with the cathode of diode V6 and capacitor C3, the yin of diode V5
Grade is connected with the V4 grid of resistance R7, capacitor C4 and N-type MOSFET；The positive grade and resistance R7 and capacitor of the diode V6
The other end of C4 and the V4 source electrode of N-type MOSFET are connected；The collector phase of the V4 drain electrode and triode V3 of the N-type MOSFET
Even.
Further, the common mode filtering circuit includes common mode inductance L1 and common mode capacitance C8, C9；The common mode inductance L1
The positive termination power input anode of input, input negative terminal is with connecing power input；Common mode capacitance C8, the C9 series connection is being connected to output just
End and output negative terminal, the intermediate node of common mode capacitance C8, C9 are connected to shell on the ground.
Further, the differential mode filter circuit includes differential mode inductance L2 and differential mode capacitor C5, C6, C7 and resistance R8；
The differential mode inductance L2 is serially connected between the V4 source electrode of N-type MOSFET and output plus terminal；The differential mode capacitor C5 connects in N-type
Between the V4 source electrode and output negative terminal of MOSFET；The differential mode capacitor C6 is attempted by between output plus terminal and output negative terminal；It is described
Differential mode capacitor C7 is attempted by between output plus terminal and output negative terminal after connecting with resistance R8.
Compared with prior art, present invention has an advantage that
(1) present invention will gush suppression circuit and EMI filter circuit Integration Design, and the advantage is that can not only effectively inhibit itself to make an uproar
Sound, DC losses are small, high-efficient, and can filter out to the EMI noise of DC/DC power supply, can also effectively reduce booting wave
Electric current is gushed, the Performance And Reliability of equipment power supply is improved.
(2) present invention solve main track using p-type MOSFET surge restraint circuit in overvoltage surge output voltage concussion,
The MOSFET normal open generated when conducting resistance is big, low efficiency and ground wire in primary and secondary are shorted using N-type MOSFET surge circuit
Lead to problems such as surge circuit fail, there is preferable electromagnetic compatibility application effect.
Detailed description of the invention
Fig. 1 is electrical block diagram of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
As shown in Figure 1, the circuit for being suitable for DC/DC power supply combination Surge suppression and EMI and filtering of the present embodiment, including wave
Gush suppression circuit and EMI filter circuit；Surge restraint circuit includes power supply circuit, square wave generation circuit, the N-type with boostrap circuit
Switch mosfet circuit.Power supply circuit gives operational amplifier power supply, square wave generation circuit after carrying out lowering and stabilizing blood pressure to busbar voltage
It generates square-wave signal and is supplied to boostrap circuit, boostrap circuit, which increases gate source voltage after rectifying to square-wave signal, opens MOSFET
It opens, reaches that DC voltage is soft to open purpose.EMI filter circuit includes common mode filtering circuit and differential mode filter circuit.Common mode and differential mode
Filter circuit is used to filter out the superposition N-type MOSFET leakage generated in DC/DC power supply common mode, differential mode noise and boostrap circuit, source
Pole noise.
Wherein, the power supply circuit includes diode V1, voltage-stabiliser tube V2, power switch transistor V3, resistance R1 and capacitor
C1；The resistance R1, diode V1 and voltage-stabiliser tube V2 are sequentially connected in series between the output plus terminal and output negative terminal of common mode inductance, institute
The base stage for stating power switch transistor V3 connects at the node that resistance R1 is connected with diode V1, the collector and common mode inductance of V3
The output plus terminal of L1 connects, and the emitter of V3 is connect with the power supply anode of capacitor C1 and operational amplifier N1.Resistance R1 is to pressure stabilizing
The operating current of pipe V2 is limited, and diode V1 concatenation voltage-stabiliser tube V2 plays temperature compensation function, power switch transistor V3
In switch state, capacitor C1 plays the role of filtering clutter absorption spike for work.
Wherein, the square wave generation circuit includes operational amplifier N1, resistance R2, R3, R4, R5, R6 and capacitor C2；It is described
The positive input of operational amplifier N1 is connected with resistance R2, R3, R5, and reverse input end is connected with resistance R6 and capacitor C2；
The output end of the operational amplifier N1 is connected by capacitor C3 with the input terminal of boostrap circuit；The resistance R2 and R3 concatenation fortune
Between the power supply anode and ground terminal for calculating amplifier N1；The resistance R4 connect operational amplifier N1 power supply anode and output end it
Between；The resistance R5 connects between the positive input and output end of operational amplifier N1；The resistance R6 connects in operation amplifier
Between the reverse input end and output end of device N1.Resistance R2, R3, R4, R5 and operational amplifier N1 constitute hysteresis comparator circuit, R4
For pull-up resistor, serves and increase driving current.Resistance R6 and capacitor C2 constitutes charge-discharge circuit.By adjusting resistance R2, R3,
R5, R6 and C2 change output square-wave voltage amplitude and frequency.
Wherein, the N-type switch mosfet circuit with boostrap circuit include diode V5, V6, resistance R7, capacitor C4 and
The V4 of N-type MOSFET；The positive grade of the diode V5 is connected with the cathode of diode V6 and capacitor C3, the cathode of diode V5 with
The V4 grid of resistance R7, capacitor C4 and N-type MOSFET are connected；The positive grade of the diode V6 is with resistance R7's and capacitor C4
The V4 source electrode of the other end and N-type MOSFET are connected；The V4 drain electrode of the N-type MOSFET is connected with the collector of triode V3.
Diode V5, V6 and capacitor C4 constitute boostrap circuit, carry out the grid that rectifying and wave-filtering increases N-type MOSFET to the square-wave signal of input
Source voltage opens MOSFET, reaches slow to input voltage and opens purpose.Resistance R7 is bleeder resistance, makes capacitor C4 repid discharge
And spike interference can be absorbed.
Wherein, the common mode filtering circuit includes common mode inductance L1 and common mode capacitance C8, C9；The common mode inductance L1 input
Positive termination power input anode, input negative terminal is with connecing power input；Common mode capacitance C8, C9 series connection be connected to output plus terminal and
Negative terminal is exported, the intermediate node of common mode capacitance C8, C9 is connected to shell on the ground.Common mode inductance L1 can be filtered out in boostrap circuit and be generated
Be superimposed upon N-type MOSFET drain electrode noise, guarantee bus it is clean.Common mode inductance L1 and common mode capacitance C8, C9 form common mode filtering
Circuit can effectively inhibit DC/DC power supply common-mode noise.
The differential mode filter circuit includes differential mode inductance L2 and differential mode capacitor C5, C6, C7 and resistance R8；The differential mode electricity
Sense L2 is serially connected between the V4 source electrode of N-type MOSFET and output plus terminal；The differential mode capacitor C5 connects the V4 source electrode in N-type MOSFET
Between output negative terminal；The differential mode capacitor C6 is attempted by between output plus terminal and output negative terminal；The differential mode capacitor C7 and electricity
It is attempted by between output plus terminal and output negative terminal after resistance R8 series connection.Differential mode filter circuit can not only be filtered out in boostrap circuit and be generated
Be superimposed upon N-type MOSFET source noise, guarantee to enter DC/DC power source bus clean, and can effectively inhibit DC/DC power supply poor
Mode noise.
The operation principle of the present invention is that:
Power supply circuit gives operational amplifier N1 by the voltage regulator circuit that resistance R1, diode V1, voltage-stabiliser tube V2 and capacitor C1 are constituted
Power supply.
Square wave generation circuit by resistance R2, R3, R4, R5 and operational amplifier N1 constitute hysteresis comparator circuit and R6 and
Capacitor C2 constitutes charge-discharge circuit and forms square wave, is supplied to boostrap circuit by capacitor C3.
N-type switch mosfet circuit with boostrap circuit carries out rectifying and wave-filtering to the square-wave signal of input and increases N-type
The gate-source voltage of MOSFET opens MOSFET, reaches slow to input voltage and opens purpose.
Common mode inductance L1 can filter out the N-type MOSFET drain electrode that is superimposed upon generated in boostrap circuit and make an uproar in common mode filtering circuit
Sound guarantees that bus is clean.DC/DC can effectively be inhibited by forming common mode filtering circuit by common mode inductance L1 and common mode capacitance C8, C9
Power supply common-mode noise.
Differential mode filter circuit can not only filter out generated in boostrap circuit be superimposed upon N-type MOSFET source noise, guarantee
It is clean into DC/DC power source bus, and can effectively inhibit DC/DC power supply differential mode noise.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI, including surge restraint circuit and EMI filter
Wave circuit, it is characterised in that:
The surge restraint circuit includes power supply circuit, square wave generation circuit, N-type switch mosfet circuit, the N-type
Switch mosfet circuit includes boostrap circuit；
The power supply circuit is used to after carrying out busbar voltage lowering and stabilizing blood pressure power to operational amplifier；
The square wave generation circuit generates square-wave signal and is supplied to boostrap circuit；
The N-type switch mosfet circuit, being rectified by boostrap circuit to square-wave signal and increasing gate source voltage makes N-type
MOSFET is opened, and reaches that DC voltage is slow to open purpose；
The EMI filter circuit includes common mode filtering circuit and differential mode filter circuit, common mode filtering circuit and differential mode filter circuit
For filtering out the superposition N-type MOSFET generated in DC/DC power supply common mode, differential mode noise and boostrap circuit leakage, source electrode noise.
2. the circuit according to claim 1 filtered suitable for DC/DC power supply combination Surge suppression and EMI, feature exist
In:
The power supply circuit includes diode V1, voltage-stabiliser tube V2, power switch transistor V3, resistance R1 and capacitor C1；
The resistance R1, diode V1 and voltage-stabiliser tube V2 are sequentially connected in series between the output plus terminal and output negative terminal of common mode inductance,
The base stage of the power switch transistor V3 connects at the node that resistance R1 is connected with diode V1, collector and the common mode electricity of V3
Feel the output plus terminal connection of L1, the emitter of V3 is connect with the power supply anode of capacitor C1 and operational amplifier N1.
3. the circuit according to claim 2 filtered suitable for DC/DC power supply combination Surge suppression and EMI, feature exist
In:
The square wave generation circuit includes operational amplifier N1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6 and capacitor
C2；The positive input of the operational amplifier N1 is connected with resistance R2, R3, R5, reverse input end and resistance R6 and capacitor
C2 is connected；
The output end of the operational amplifier N1 is connected by capacitor C3 with the input terminal of boostrap circuit；
Between the power supply anode and ground terminal of the resistance R2 and resistance R3 concatenation operational amplifier N1；
The resistance R4 connects between the power supply anode and output end of operational amplifier N1；
The resistance R5 connects between the positive input and output end of operational amplifier N1；
The resistance R6 connects between the reverse input end and output end of operational amplifier N1.
4. the circuit according to claim 3 filtered suitable for DC/DC power supply combination Surge suppression and EMI, feature exist
In:
The N-type switch mosfet circuit includes the V4 of diode V5, diode V6, resistance R7, capacitor C4 and N-type MOSFET；
The positive grade of the diode V5 is connected with the cathode of diode V6 and capacitor C3, the cathode and resistance R7, electricity of diode V5
The V4 grid for holding C4 and N-type MOSFET is connected；
The positive grade of the diode V6 is connected with the V4 source electrode of the other end of resistance R7 and capacitor C4 and N-type MOSFET；
The V4 drain electrode of the N-type MOSFET is connected with the collector of triode V3.
5. the circuit according to claim 4 filtered suitable for DC/DC power supply combination Surge suppression and EMI, feature exist
In:
The common mode filtering circuit includes common mode inductance L1 and common mode capacitance C8, common mode capacitance C9；
The positive termination power input anode of common mode inductance L1 input, input negative terminal is with connecing power input；The common mode capacitance
C8, common mode capacitance C9 series connection are connected to output plus terminal and output negative terminal, and the intermediate node of common mode capacitance C8, C9 is connected to shell on the ground.
6. the circuit according to claim 5 filtered suitable for DC/DC power supply combination Surge suppression and EMI, feature exist
In:
The differential mode filter circuit includes differential mode inductance L2 and differential mode capacitor C5, differential mode capacitor C6, differential mode capacitor C7 and resistance
R8；
The differential mode inductance L2 is serially connected between the V4 source electrode of N-type MOSFET and output plus terminal；
The differential mode capacitor C5 connects between the V4 source electrode and output negative terminal of N-type MOSFET；
The differential mode capacitor C6 is attempted by between output plus terminal and output negative terminal；
The differential mode capacitor C7 is attempted by between output plus terminal and output negative terminal after connecting with resistance R8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811480532.4A CN109347310B (en) | 2018-12-05 | 2018-12-05 | Circuit suitable for DC/DC power supply combines surge suppression and EMI filtering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811480532.4A CN109347310B (en) | 2018-12-05 | 2018-12-05 | Circuit suitable for DC/DC power supply combines surge suppression and EMI filtering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109347310A true CN109347310A (en) | 2019-02-15 |
| CN109347310B CN109347310B (en) | 2023-11-07 |
Family
ID=65319855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811480532.4A Active CN109347310B (en) | 2018-12-05 | 2018-12-05 | Circuit suitable for DC/DC power supply combines surge suppression and EMI filtering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109347310B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246481A1 (en) * | 2022-06-20 | 2023-12-28 | 中国第一汽车股份有限公司 | Driving circuit having emi suppression and vehicle motor driving system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668707A (en) * | 1994-10-04 | 1997-09-16 | Delco Electronics Corp. | Multi-phase power converter with harmonic neutralization |
| US20090027136A1 (en) * | 2004-08-31 | 2009-01-29 | Koninklijke Philips Electronics, N.V. | Active electromagnetic interference filter circuit for suppressing a line conducted interference signal |
| CN101834539A (en) * | 2010-05-27 | 2010-09-15 | 浙江大学 | High-efficiency AC/DC combined converter with wide output voltage range |
| CN102307001A (en) * | 2011-08-23 | 2012-01-04 | 东南大学 | High-voltage gate driving circuit module with resistance to interference of common mode power noises |
| US20120262144A1 (en) * | 2009-09-10 | 2012-10-18 | E Craftsmen Associates Ltd. | Bootstrap startup and assist circuit |
| CN204993047U (en) * | 2015-09-30 | 2016-01-20 | 合肥华耀电子工业有限公司 | Surge suppression circuit of function is prevented joining conversely in tape input |
| US20170141689A1 (en) * | 2015-11-12 | 2017-05-18 | Rohm Co., Ltd. | Ac/dc converter and driving circuit |
| CN108599554A (en) * | 2018-05-09 | 2018-09-28 | 重庆理工大学 | A kind of bipolarity buck-boost direct current converter |
| CN209046517U (en) * | 2018-12-05 | 2019-06-28 | 中国电子科技集团公司第四十三研究所 | A kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI |
-
2018
- 2018-12-05 CN CN201811480532.4A patent/CN109347310B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668707A (en) * | 1994-10-04 | 1997-09-16 | Delco Electronics Corp. | Multi-phase power converter with harmonic neutralization |
| US20090027136A1 (en) * | 2004-08-31 | 2009-01-29 | Koninklijke Philips Electronics, N.V. | Active electromagnetic interference filter circuit for suppressing a line conducted interference signal |
| US20120262144A1 (en) * | 2009-09-10 | 2012-10-18 | E Craftsmen Associates Ltd. | Bootstrap startup and assist circuit |
| CN101834539A (en) * | 2010-05-27 | 2010-09-15 | 浙江大学 | High-efficiency AC/DC combined converter with wide output voltage range |
| CN102307001A (en) * | 2011-08-23 | 2012-01-04 | 东南大学 | High-voltage gate driving circuit module with resistance to interference of common mode power noises |
| CN204993047U (en) * | 2015-09-30 | 2016-01-20 | 合肥华耀电子工业有限公司 | Surge suppression circuit of function is prevented joining conversely in tape input |
| US20170141689A1 (en) * | 2015-11-12 | 2017-05-18 | Rohm Co., Ltd. | Ac/dc converter and driving circuit |
| CN108599554A (en) * | 2018-05-09 | 2018-09-28 | 重庆理工大学 | A kind of bipolarity buck-boost direct current converter |
| CN209046517U (en) * | 2018-12-05 | 2019-06-28 | 中国电子科技集团公司第四十三研究所 | A kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246481A1 (en) * | 2022-06-20 | 2023-12-28 | 中国第一汽车股份有限公司 | Driving circuit having emi suppression and vehicle motor driving system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109347310B (en) | 2023-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209046517U (en) | A kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI | |
| CN110233577A (en) | Circuit and control method occur for a kind of controllable high-voltage power pulse | |
| CN206685893U (en) | A kind of power input protection circuit of the road vehicle controller based on discrete component | |
| CN203039574U (en) | Power supply circuit capable of solving problem of grounding system common-mode lightning stroke restart | |
| CN104659923A (en) | PMU and wireless power system which the PMU is applied to | |
| CN203759105U (en) | Precise zero cross detection circuit for resonance current of high-frequency dedusting power supply | |
| CN203406605U (en) | Control circuit for inhibiting surge current | |
| CN208580145U (en) | Controller operating voltage management system | |
| CN109347310A (en) | A kind of circuit filtered suitable for DC/DC power supply combination Surge suppression and EMI | |
| CN107171542A (en) | A kind of high voltage power supply converter anti-jamming circuit | |
| CN209217940U (en) | A kind of passive metal-oxide-semiconductor safe driving circuit of isolating transformer centre cap | |
| CN201966591U (en) | Arcing protection circuit of inverter | |
| CN204559106U (en) | A kind of convertible frequency air-conditioner and electrolytic capacitor overvoltage crowbar thereof | |
| CN204090126U (en) | Audio frequency PWM circuit and stereo set | |
| CN107482899B (en) | Circuit combining EMI filtering and soft start and control method thereof | |
| CN207884494U (en) | A kind of positive-negative power generation circuit suitable for IGBT drivings | |
| CN106059282A (en) | Device for reducing audio noise of added, refitted and separated on-board audio-visual devices | |
| CN101893669A (en) | Tool and method for testing oil immersed step-up transformer assembly | |
| CN207732657U (en) | A kind of safety-type Switching Power Supply | |
| CN202423827U (en) | Low loss DC negative ion generator | |
| CN110224616A (en) | A kind of High Frequency Link power supply unit for high voltage intermediate frequency power supply pulsed triggering circuit | |
| CN209593272U (en) | A kind of filter assembly with input over-voltage shutdown | |
| CN211830567U (en) | Lightning protection filtering power supply circuit | |
| CN205050070U (en) | Computer power supply circuit | |
| CN209709936U (en) | Surge voltage rejects trap when a kind of long |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |