CN204258616U - A kind of architectural engineering Switching Power Supply - Google Patents
A kind of architectural engineering Switching Power Supply Download PDFInfo
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- CN204258616U CN204258616U CN201420830362.9U CN201420830362U CN204258616U CN 204258616 U CN204258616 U CN 204258616U CN 201420830362 U CN201420830362 U CN 201420830362U CN 204258616 U CN204258616 U CN 204258616U
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Abstract
A kind of architectural engineering Switching Power Supply; comprise a rectification circuit; the input of rectification circuit is connected with power supply; the output of rectification circuit is connected with transformer T1 input with surge protection circuit respectively; surge protection circuit is connected with the metal-oxide-semiconductor link of switching power source chip and the input of transformer T1 respectively; the input of one sampling feedback circuit is connected with transformer T1, and the output of sampling feedback circuit is connected with the feedback input end of switching power source chip.The utility model adopts such scheme; reasonable in design; surge protection circuit is adopted in Switching Power Supply; surge voltage is released; avoid surge and damage is caused to switching power source chip, ensure that complexity that Switching Power Supply can adapt to job site, construction site is powered environment, avoid that input voltage is excessive causes damage to Switching Power Supply; extend the useful life of Switching Power Supply, bring convenience to the use in architectural engineering.
Description
Technical field:
The utility model relates to a kind of architectural engineering Switching Power Supply.
Background technology:
At present, the Switching Power Supply adopted in architectural engineering mostly structure is simple, function singleness, because job site, construction site exists the heavy power consumption equipments such as big-block engine, the frequent start-stop of these equipment can cause serious surge, existing Switching Power Supply cannot adapt to this kind of complicated operational environment, effectively can not carry out Surge suppression, therefore very easily be damaged; In addition, the usual fluctuation of power supply at building engineering construction scene is comparatively large, will cause damage, have a strong impact on the useful life of Switching Power Supply, make troubles to architectural engineering when power source change scope exceeds the input voltage range of Switching Power Supply to Switching Power Supply.
Utility model content:
The utility model is in order to make up the deficiencies in the prior art, provide a kind of architectural engineering Switching Power Supply, its reasonable in design, surge protection circuit is adopted in Switching Power Supply, surge voltage is released, avoid surge and damage is caused to switching power source chip, ensure that complexity that Switching Power Supply can adapt to job site, construction site is powered environment; Rectification circuit and surge protection circuit design increase the scope of input voltage; avoid that input voltage is excessive causes damage to Switching Power Supply; extend the useful life of Switching Power Supply, bring convenience to the use in architectural engineering, solve problems of the prior art.
The utility model for solving the problems of the technologies described above adopted technical scheme is:
A kind of architectural engineering Switching Power Supply; comprise a rectification circuit; the input of rectification circuit is connected with power supply; the output of rectification circuit is connected with transformer T1 input with surge protection circuit respectively; surge protection circuit is connected with the metal-oxide-semiconductor link of switching power source chip and the input of transformer T1 respectively; the input of one sampling feedback circuit is connected with transformer T1, and the output of sampling feedback circuit is connected with the feedback input end of switching power source chip.
Described switching power source chip is VIPER22 chip.
Described rectification circuit comprises a rectifier bridge, the first input end of rectifier bridge is connected with inductance L 4 with an inductance L 2 respectively with the second input, an electric capacity C32 is provided with between inductance L 2 and the other end of inductance L 4, at the two ends of electric capacity C32, the two ends of a piezo-resistance RV1, piezo-resistance RV1 in parallel are connected with power input interface J2.
Described surge protection circuit comprises the N-channel MOS pipe Q9 that one source pole is connected with the DRAIN pin of switching power source chip; a voltage-stabiliser tube D16 is provided with between the source electrode and grid of N-channel MOS pipe Q9; the resistance R42 of mutual series connection is connected with the first output of rectifier bridge with resistance R43; the resistance R44 of mutual series connection is connected with the second output of rectifier bridge with TVS pipe, and the drain electrode of N-channel MOS pipe Q9 is connected with transformer T1.
Described sampling feedback circuit comprises a photoelectrical coupler P1 be connected with switching power source chip, No. 3 pins of photoelectrical coupler P1 are connected with switching power source chip feedback input end FB pin, No. 4 pins of photoelectrical coupler P1 are connected with the VDD pin of switching power source chip, a resistance R34 is provided with between No. 1 pin and No. 2 pins of photoelectrical coupler P1, No. 1 pin connects the terminal output of 5V by a resistance R31, the negative electrode K of one controllable accurate source of stable pressure U5 is connected with No. 2 pins, anode A is connected with transformer output, resistance R32 and the electric capacity C30 of series connection is provided with between No. 2 pins and the reference pole R of controllable accurate source of stable pressure U5.
The utility model adopts such scheme, reasonable in design, adopts surge protection circuit in Switching Power Supply, releases to surge voltage, avoid surge and damage is caused to switching power source chip, ensure that complexity that Switching Power Supply can adapt to job site, construction site is powered environment; TVS pipe in safety electric capacity in rectification circuit and piezo-resistance and surge protection circuit, the metal-oxide-semiconductor design in N-channel MOS pipe tandem tap power supply chip increase the scope of input voltage; avoid that input voltage is excessive causes damage to Switching Power Supply; extend the useful life of Switching Power Supply, bring convenience to the use in architectural engineering.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
In figure, 1, first input end, the 2, second input, the 3, first output, the 4, second output.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
As shown in Figure 1; a kind of architectural engineering Switching Power Supply; comprise a rectification circuit; the input of rectification circuit is connected with power supply; the output of rectification circuit is connected with transformer T1 input with surge protection circuit respectively; surge protection circuit is connected with the metal-oxide-semiconductor link of switching power source chip and the input of transformer T1 respectively, and the input of a sampling feedback circuit is connected with transformer T1, and the output of sampling feedback circuit is connected with the feedback input end of switching power source chip.
Described switching power source chip is VIPER22 chip.
Described rectification circuit comprises a rectifier bridge, the first input end 1 of rectifier bridge is connected with inductance L 4 with an inductance L 2 respectively with the second input 2, an electric capacity C32 is provided with between inductance L 2 and the other end of inductance L 4, at the two ends of electric capacity C32, the two ends of a piezo-resistance RV1, piezo-resistance RV1 in parallel are connected with power input interface J2.
Described surge protection circuit comprises the N-channel MOS pipe Q9 that one source pole is connected with the DRAIN pin of switching power source chip; a TVS pipe D16 is provided with between the source electrode and grid of N-channel MOS pipe Q9; the resistance R42 of mutual series connection is connected with the first output 3 of rectifier bridge with resistance R43; the resistance R44 of mutual series connection is connected with the second output 4 of rectifier bridge with TVS pipe, and the drain electrode of N-channel MOS pipe Q9 is connected with transformer T1.
Described sampling feedback circuit comprises a photoelectrical coupler P1 be connected with switching power source chip, No. 3 pins of photoelectrical coupler P1 are connected with switching power source chip feedback input end FB pin, No. 4 pins of photoelectrical coupler P1 are connected with the VDD pin of switching power source chip, a resistance R34 is provided with between No. 1 pin and No. 2 pins of photoelectrical coupler P1, the negative electrode K of one controllable accurate source of stable pressure U5 is connected with No. 2 pins, anode A respectively with the input of transformer T1, output is connected, resistance R32 and the electric capacity C30 of series connection is provided with between No. 2 pins and the reference pole R of controllable accurate source of stable pressure U5.
During work, input voltage is accessed by power input interface J2, input voltage becomes direct voltage after rectification circuit, in secondary process, inductance L 2 in rectification circuit and inductance L 4 can play the effect of filtering, electric capacity C32 and piezo-resistance RV1 can effectively suppress high pressure and surge, ensure that the stability of rectification circuit.
Input voltage becomes direct voltage after rectification circuit; the surge protection circuit be connected with rectification circuit is arranged between rectification circuit and switching power source chip; resistance R42 in surge protection circuit and resistance R43 and resistance R44 can play the effect of dividing potential drop current limliting, prevents the excessive device burnt out in circuit of electric current.The N-channel MOS pipe Q9 be connected with metal-oxide-semiconductor in switching power source chip that is that adopt in surge protection circuit adds resistance to pressure and the stability of global switch part.
Under the control of switching power source chip, input voltage is by the transformer action output services voltage of transformer T1, uses with electricity supply and use equipment.Simultaneously, output voltage is sampled by sampling feedback circuit, and output voltage signal is entered switching power source chip by the feedback end of switching power source chip, and switching power source chip carries out the adjustment of frequency of oscillation by feedback signal, to ensure output voltage stabilization.The controllable accurate source of stable pressure U5 adopted in sampling feedback circuit can play the effect of voltage stabilizing, makes the output voltage stabilization fed back, ensure that switching power source chip carries out stable and accurate adjustment, thus strengthen the stability of output voltage.
Adopt architectural engineering Switching Power Supply of the present utility model, reasonable in design, surge protection circuit is adopted in Switching Power Supply, surge voltage is released, avoid surge and damage is caused to switching power source chip, ensure that complexity that Switching Power Supply can adapt to job site, construction site is powered environment; TVS pipe in safety electric capacity in rectification circuit and piezo-resistance and surge protection circuit, the metal-oxide-semiconductor design in N-channel MOS pipe tandem tap power supply chip increase the scope of input voltage; avoid that input voltage is excessive causes damage to Switching Power Supply; extend the useful life of Switching Power Supply, bring convenience to the use in architectural engineering.The utility model does not describe part in detail, is the known technology of those skilled in the art of the present technique.
Claims (5)
1. an architectural engineering Switching Power Supply; it is characterized in that: comprise a rectification circuit; the input of rectification circuit is connected with power supply; the output of rectification circuit is connected with transformer T1 input with surge protection circuit respectively; surge protection circuit is connected with the metal-oxide-semiconductor link of switching power source chip and the input of transformer T1 respectively; the input of one sampling feedback circuit is connected with transformer T1, and the output of sampling feedback circuit is connected with the feedback input end of switching power source chip.
2. a kind of architectural engineering Switching Power Supply according to claim 1, is characterized in that: described switching power source chip is VIPER22 chip.
3. a kind of architectural engineering Switching Power Supply according to claim 1 and 2, it is characterized in that: described rectification circuit comprises a rectifier bridge, the first input end of rectifier bridge is connected with inductance L 4 with an inductance L 2 respectively with the second input, an electric capacity C32 is provided with between inductance L 2 and the other end of inductance L 4, at the two ends of electric capacity C32, the two ends of a piezo-resistance RV1, piezo-resistance RV1 in parallel are connected with power input interface J2.
4. a kind of architectural engineering Switching Power Supply according to claim 2; it is characterized in that: described surge protection circuit comprises the N-channel MOS pipe Q9 that one source pole is connected with the DRAIN pin of switching power source chip; a voltage-stabiliser tube D16 is provided with between the source electrode and grid of N-channel MOS pipe Q9; the resistance R42 of mutual series connection is connected with the first output of rectifier bridge with resistance R43; the resistance R44 of mutual series connection is connected with the second output of rectifier bridge with TVS pipe, and the drain electrode of N-channel MOS pipe Q9 is connected with transformer T1.
5. a kind of architectural engineering Switching Power Supply according to claim 2, it is characterized in that: described sampling feedback circuit comprises a photoelectrical coupler P1 be connected with switching power source chip, No. 3 pins of photoelectrical coupler P1 are connected with switching power source chip feedback input end FB pin, No. 4 pins of photoelectrical coupler P1 are connected with the VDD pin of switching power source chip, a resistance R34 is provided with between No. 1 pin and No. 2 pins of photoelectrical coupler P1, No. 1 pin connects the terminal output of 5V by a resistance R31, the negative electrode K of one controllable accurate source of stable pressure U5 is connected with No. 2 pins, anode A is connected with transformer output, resistance R32 and the electric capacity C30 of series connection is provided with between No. 2 pins and the reference pole R of controllable accurate source of stable pressure U5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830362.9U CN204258616U (en) | 2014-12-23 | 2014-12-23 | A kind of architectural engineering Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830362.9U CN204258616U (en) | 2014-12-23 | 2014-12-23 | A kind of architectural engineering Switching Power Supply |
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| Publication Number | Publication Date |
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| CN204258616U true CN204258616U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420830362.9U Active CN204258616U (en) | 2014-12-23 | 2014-12-23 | A kind of architectural engineering Switching Power Supply |
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| CN (1) | CN204258616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108271428A (en) * | 2016-02-05 | 2018-07-10 | 广东欧珀移动通信有限公司 | Guard method, power supply adaptor when charging system, charging |
| CN110518562A (en) * | 2019-08-26 | 2019-11-29 | 珠海格力电器股份有限公司 | A kind of surge protective device, electromagnetic heating apparatus and its surge protection method |
-
2014
- 2014-12-23 CN CN201420830362.9U patent/CN204258616U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108271428A (en) * | 2016-02-05 | 2018-07-10 | 广东欧珀移动通信有限公司 | Guard method, power supply adaptor when charging system, charging |
| CN110518562A (en) * | 2019-08-26 | 2019-11-29 | 珠海格力电器股份有限公司 | A kind of surge protective device, electromagnetic heating apparatus and its surge protection method |
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| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" | ||
| CP03 | "change of name, title or address" |
Address after: 250000 the 21 layer of integrity business building, 85 Lishan North Road, Tianqiao District, Ji'nan, Shandong. Patentee after: SHANDONG HAOYAN ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: Room 926, 9 / F, haolu electronic commercial building, 338 Beiyuan street, Tianqiao District, Jinan City, Shandong Province Patentee before: JINAN LIMITLESS RLECTRONIC ELECTRONIC TECHNOLOGY Co.,Ltd. |