CN208479473U - A kind of DC-DC power module inhibiting booting surge - Google Patents
A kind of DC-DC power module inhibiting booting surge Download PDFInfo
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- CN208479473U CN208479473U CN201821013264.0U CN201821013264U CN208479473U CN 208479473 U CN208479473 U CN 208479473U CN 201821013264 U CN201821013264 U CN 201821013264U CN 208479473 U CN208479473 U CN 208479473U
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- power switch
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- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of DC-DC power modules for inhibiting booting surge, belong to power module technical field.The DC-DC power module includes power switch circuit and output filter circuit；The power switch circuit includes power switch tube, transformer and rectifying tube；The control circuit for carrying out drive control for the power switch tube to power switch circuit and being protected to power module circuitry is additionally provided between the power switch circuit and output filter circuit；The input terminal of the power module is additionally provided with input filter circuit, the input filter circuit includes multiple capacitors in parallel, the power module has additional the filtering of π type in input filter circuit, is also parallel with TVS diode between the capacitor in the π type filtering and input filter circuit.DC-DC power module described in the utility model can inhibit input surge voltage, and then improve the functional reliability of power supply.
Description
Technical field
The utility model belongs to power module technical field more particularly to a kind of DC-DC power source mould for inhibiting booting surge
Block.
Background technique
Surge restraint circuit is mainly the surging signal for inhibiting input, prevents surge voltage from causing to impact to electrical equipment,
To which electrical equipment be effectively protected.Surge current refer to the short time occurred in power grid as the high voltage " wave " draws
The high current risen.Surge current will cause switch power supply corrugating and collapse, so that power supply quality is deteriorated, or even will affect other
The work of electrical equipment and make protect circuit operation may due to inrush current shock input end capacitor, main control chip etc.
Input capacitance and the certain damage of main control chip are caused, is even damaged.Therefore input surge voltage must be carried out effective
Inhibit, it is ensured that product reliability service.
The common DC-DC power module structure for not having the surge circuit that inhibits to be switched on shown in dotted line frame, is led as shown in figure 1
It to include power switch circuit, control circuit and output filter circuit.In practical applications, external power supply power supply is used as input,
It is used after DC-DC power module converts input voltage for load.The circuit diagram of DC-DC power module structure
As shown in Fig. 2, dotted line frame 1 is input filter circuit in figure, dotted line frame 2 is control circuit, dotted line frame 3 be power switch circuit,
Dotted line frame 4 is output filter circuit.The power switch circuit of the DC-DC power module include power switch tube, transformer and
Rectifying tube；Wherein power switch tube is mainly used for controlling the energy value stored in transformer；Transformer is mainly used for completing energy
The effect of transmitting；Rectifying tube is mainly used for completing the effect of rectification.Output filter circuit is completed to rectifying tube rectified voltage
Filtering guarantees output steady dc voltage comprising inductance and capacitor complete filter function jointly；Control circuit is mainly used
In realize DC-DC power module power switch tube drive control, the functions such as circuit protection, mainly by LM5032MTC chip,
TL431QDBZR, FDMC86240 etc. and some peripheral circuits composition.Wherein dotted line frame 1 is located at circuit input end, only simple
Input filter is carried out using capacitor, in the moment of input circuit switch closure, since the initial voltage on capacitor is zero meeting shape
At very big temporary impact electric current, especially powerful switching power circuit is not only brought the component in circuit very big
Instantaneous stress, and easily cause input capacitance and the certain damage of main control chip, even damage.Therefore to DC/DC
Switching Power Supply Surge suppression is very necessary.
Summary of the invention
In order to solve the problems in the existing technology, the utility model provides a kind of DC-DC for inhibiting booting surge
Power module.
In order to achieve the above object, the technical solution that the utility model is taken is as follows:
A kind of DC-DC power module inhibiting booting surge, including power switch circuit and output filter circuit；The function
Rate switching circuit includes power switch tube, transformer and rectifying tube；Between the power switch circuit and output filter circuit also
It is provided with and carries out drive control for the power switch tube to power switch circuit and power module circuitry protected
Control circuit；The input terminal of the power module is additionally provided with input filter circuit, and the input filter circuit includes the more of parallel connection
A capacitor, the power module have additional π type in input filter circuit and filter, in the π type filtering and input filter circuit
Capacitor between be also parallel with TVS diode.
Further, the π type filtering uses LC filter circuit.
Further, the π type filtering includes level-one filter capacitor in parallel with the capacitor in input filter circuit respectively
C01 and secondary filter capacitor C02, the π type filtering further includes being connected on level-one filter capacitor C01 and secondary filter capacitor C02
Between inductance L2.
Further, the level-one filter capacitor C01 and secondary filter capacitor C02 includes the electricity of model 50V 22uf
Hold, the inductance of the inductance L2 is 6uH.
Further, the TVS diode includes the TVS diode of model 1SMA36AT3G.
Further, the control circuit include chip LM5032MTC, chip TL431QDBZR, chip FDMC86240 and
Peripheral circuit.
The utility model has the advantages that compared with prior art, power module described in the utility model is filtered by the π type added in input terminal
TVS diode between wave and the capacitor being connected in parallel in the filtering of π type and input filter circuit, so that the circuit of power module has
The response time of nanosecond and quite high Surge suppression ability, when input terminal is subjected to the high energy impact events of moment, power supply mould
The high impedance at the both ends TVS is become Low ESR by block circuit, can absorb the high current of moment, will input both end voltage clamp down in
40V, and input reflection ripple 280mV can be reduced to 120mV, and then the circuit element of protection power source module back is not by transient state
The impact of high voltage spikes inhibits input surge voltage, avoids power module from damaging, the work for improving power supply can
By property.
Detailed description of the invention
It, below will be to attached needed in embodiment in order to illustrate more clearly of the technical solution of the utility model
Figure is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the present embodiment DC-DC power module structure chart；
Fig. 2 is that the present embodiment does not have the DC-DC power module circuit diagram for inhibiting booting surge；
Fig. 3 is that the present embodiment has the DC-DC power module circuit diagram for inhibiting booting surge.
Specific embodiment
In the description of the present invention, it should be understood that term " center ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
Novel limitation.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
The utility model is further elaborated with reference to the accompanying drawings and examples.
Embodiment
With reference to Fig. 3, a kind of DC-DC power module inhibiting booting surge, including power switch circuit and output filtered electrical
Road；The power switch circuit includes power switch tube, transformer and rectifying tube；The power switch circuit and output filtered electrical
Be additionally provided between road for power switch circuit power switch tube carry out drive control and to power module circuitry into
The control circuit of row protection；The input terminal of the power module is additionally provided with input filter circuit, and the input filter circuit includes
Multiple capacitors in parallel, the power module have additional the filtering of π type in input filter circuit, and the π type filtering is filtered with input
TVS diode is also parallel between capacitor in wave circuit.
With reference to Fig. 3, it is control circuit, dotted line frame 7 that dotted line frame 5, which is with the input filter circuit of surge, dotted line frame 6 is inhibited,
It is output filter capacitor circuit for power switch circuit, dotted line frame 8；Wherein power switch circuit includes power switch tube, transformation
Device and rectifying tube, the power switch tube are mainly used for controlling the energy value stored in transformer, and transformer is mainly used for completing
The transmitting of energy, rectifying tube are mainly used for completing the effect of rectification；The output filter circuit is completed to electricity after rectifying tube rectification
The filtering of pressure guarantees output steady dc voltage comprising capacitor, for completing filter action；The control circuit includes
Chip LM5032MTC, chip TL431QDBZR, chip FDMC86240 and peripheral circuit；Dotted line frame 5 be positioned at circuit input end,
It includes capacitor C20, C21 and C5 in parallel, and the present embodiment has additional the filtering of π type and TVS diode in input filter circuit
VZ1。
With reference to Fig. 3, the π type filtering uses LC filter circuit, and the π type filtering includes respectively and in input filter circuit
Capacitor (capacitor C20, C21 or C5) parallel connection level-one filter capacitor C01 and secondary filter capacitor C02, the π type filtering also wraps
Include the inductance L2 being connected between level-one filter capacitor C01 and secondary filter capacitor C02.
Further, the level-one filter capacitor C01 and secondary filter capacitor C02 includes model 50V 22uf encapsulation
For 1210 capacitor, the inductance of the inductance L2 is 6uH.
Further, the TVS diode VZ1 includes the TVS diode that model 1SMA36AT3G is encapsulated as 1206.
Power module described in the utility model filters and is connected in parallel on the filtering of π type and input by the π type added in input terminal
The TVS diode between capacitor in filter circuit so that the circuit of power module have nanosecond response time and quite
High Surge suppression ability, when input terminal is subjected to the high energy impact events of moment, power module circuitry is by the high impedance at the both ends TVS
Become Low ESR, the high current of moment can be absorbed, input both end voltage is clamped down in 40V, and can be by input reflection ripple
280mV is reduced to 120mV, and then the circuit element of protection power source module back is not by the impact of high voltage transient spike, right
Input surge voltage is inhibited, and is avoided power module from damaging, is improved the functional reliability of power supply.
It is preferred embodiments of the present invention above, it is noted that for those skilled in the art
For, without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications
It is considered as the protection scope of the utility model.
Claims (6)
1. a kind of DC-DC power module for inhibiting booting surge, it is characterised in that: including power switch circuit and output filtered electrical
Road；The power switch circuit includes power switch tube, transformer and rectifying tube；The power switch circuit and output filtered electrical
Be additionally provided between road for power switch circuit power switch tube carry out drive control and to power module circuitry into
The control circuit of row protection；The input terminal of the power module is additionally provided with input filter circuit, and the input filter circuit includes
Multiple capacitors in parallel, the power module have additional the filtering of π type in input filter circuit, and the π type filtering is filtered with input
TVS diode is also parallel between capacitor in wave circuit.
2. a kind of DC-DC power module for inhibiting booting surge according to claim 1, it is characterised in that: the π type filter
Wave uses LC filter circuit.
3. a kind of DC-DC power module for inhibiting booting surge according to claim 1 or 2, it is characterised in that: the π
Type filtering includes level-one filter capacitor C01 and secondary filter capacitor C02 in parallel with the capacitor in input filter circuit respectively, institute
Stating the filtering of π type further includes the inductance L2 being connected between level-one filter capacitor C01 and secondary filter capacitor C02.
4. a kind of DC-DC power module for inhibiting booting surge according to claim 3, it is characterised in that: the level-one
Filter capacitor C01 and secondary filter capacitor C02 includes the capacitor of model 50V 22uf, and the inductance of the inductance L2 is
6uH。
5. a kind of DC-DC power module for inhibiting booting surge according to claim 1, it is characterised in that: the TVS bis-
Pole pipe includes the TVS diode of model 1SMA36AT3G.
6. a kind of DC-DC power module for inhibiting booting surge according to claim 1, it is characterised in that: the control
Circuit includes chip LM5032MTC, chip TL431QDBZR, chip FDMC86240 and peripheral circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013264.0U CN208479473U (en) | 2018-06-28 | 2018-06-28 | A kind of DC-DC power module inhibiting booting surge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013264.0U CN208479473U (en) | 2018-06-28 | 2018-06-28 | A kind of DC-DC power module inhibiting booting surge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208479473U true CN208479473U (en) | 2019-02-05 |
Family
ID=65211809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821013264.0U Expired - Fee Related CN208479473U (en) | 2018-06-28 | 2018-06-28 | A kind of DC-DC power module inhibiting booting surge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208479473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206592A (en) * | 2021-07-06 | 2021-08-03 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Input protection circuit and auxiliary power supply circuit for IC-OC6800 |
-
2018
- 2018-06-28 CN CN201821013264.0U patent/CN208479473U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206592A (en) * | 2021-07-06 | 2021-08-03 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Input protection circuit and auxiliary power supply circuit for IC-OC6800 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 5th Floor, Building D3, Huijinyuan Pioneer Park, Caotan 6th Road, Economic Development Zone, Xi'an City, Shaanxi Province 710000 Patentee after: Shaanxi Zerui Microelectronics Co.,Ltd. Address before: 5th Floor, Building D3, Huijinyuan Pioneer Park, Caotan 6th Road, Economic Development Zone, Xi'an City, Shaanxi Province 710000 Patentee before: SHAANXI ZERUI MICROELECTRONICS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |