CN203416176U - Switch power source - Google Patents

Switch power source Download PDF

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Publication number
CN203416176U
CN203416176U CN201320466128.8U CN201320466128U CN203416176U CN 203416176 U CN203416176 U CN 203416176U CN 201320466128 U CN201320466128 U CN 201320466128U CN 203416176 U CN203416176 U CN 203416176U
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China
Prior art keywords
transformer
circuit board
mentioned
power supply
output interface
Prior art date
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Active
Application number
CN201320466128.8U
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Chinese (zh)
Inventor
任兴强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New Time Electronic Component (hangzhou) Co Ltd
Original Assignee
New Time Electronic Component (hangzhou) Co Ltd
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Priority to CN201320466128.8U priority Critical patent/CN203416176U/en
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Publication of CN203416176U publication Critical patent/CN203416176U/en
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Abstract

The utility model discloses a switch power source and belongs to the technical field of an electronic power source. The switch power source comprises a primary circuit board, a secondary circuit board, an insulation pad and a row pin used for connecting the two circuit boards, wherein the primary circuit board and the secondary circuit board are oppositely mounted, and the insulation pad is between a power source output interface of the secondary circuit board and a transformer of the primary circuit board and is used for isolating the transformer from the power source output interface. The switch power source is respectively placed on two different circuit boards through a primary circuit and a secondary circuit, splicing is realized through the row pin and the transformer, a space is effectively utilized, power source density is improved, and the switch power source further has properties of simple operation, easy realization, low cost and safe and reliable performance.

Description

A kind of Switching Power Supply
Technical field
The utility model relates to a kind of Switching Power Supply, belongs to electronic power supply technical field.
Background technology
In recent years, along with developing rapidly of power electronic technology, as the power supply of electronic equipment heart, obtain further development, especially had the Switching Power Supply of energy-efficient good reputation.Switching Power Supply is comprised of input rectifying filter, power switch pipe and high frequency transformer, output rectification filter device and controller 4 parts conventionally, and its effect is to convert input ac voltage to VD.Switching Power Supply is the requirement that meets modern electronic equipment development, mainly to intellectuality, high frequency, miniaturization development, the especially miniaturization of small-power switching power-supply.At present, the method for 20 watts of following Switching Power Supply miniaturization employings has:
1,, on the basis of multiple power source framework, with the components and parts of high price small size, replace conventional device, to improve power density.But this method directly causes the raising of power supply cost;
2, on the basis of multiple power source framework, simplify components and parts above it to reach high power density, at secure context, there is certain problem in this method.
In view of this, the inventor studies this, develops specially a kind of Switching Power Supply, and this case produces thus.
Utility model content
The purpose of this utility model is to provide the small-power switching power-supply that a kind of volume is little, cost is low and safe and reliable.
To achieve these goals, solution of the present utility model is:
A kind of Switching Power Supply, comprise primary circuit plate, secondary circuit board, insulation spacer, and for connecting row's pin of above-mentioned two circuit boards, wherein, primary circuit plate and secondary circuit board are installed in opposite directions, insulation spacer is between the power output interface of secondary circuit board and the transformer of primary circuit plate, for the isolation of transformer and output interface.
Protective tube, elementary filter rectifier, voltage sampling circuit and transformer are installed on above-mentioned primary circuit plate, and alternating voltage changes pulsating dc voltage into after protective tube, elementary current rectifying and wave filtering circuit, and then passes through transformer pressure-reducing.
Above-mentioned secondary circuit board is provided with secondary commutation filter circuit, optical coupler, control circuit and power output interface, pulsating dc voltage is through control circuit, after transformer pressure-reducing, again after secondary commutation filter circuit is eliminated ripple, changing galvanic current into presses, finally by power output interface, flow to load, above-mentioned control circuit comprises control chip and metal-oxide-semiconductor, for control transformer, the direct voltage of final output further passes through voltage sampling circuit, optical coupler and row pin by real-time voltage signal feedback to control circuit, pass through metal-oxide-semiconductor, stablizing of regulation output voltage, in the utility model, row's pin both can, for the transmission of feedback signal, can, for the connection of primary circuit plate and secondary circuit board, play support, positioning action to whole Switching Power Supply structure again.
Above-mentioned transformer adopting high frequency transformer, between primary circuit plate, secondary circuit board, its input is connected with primary circuit plate, and output is connected with secondary circuit board, and whole Switching Power Supply structure is also played a supporting role.
Above-mentioned transformer and power output interface arranged in dislocation, make two circuit board distances nearer, can save more spaces in vertical direction.
Above-mentioned power output interface adopts wherein a kind of in USB interface, two core plugs or multi-pin connector.
As preferably, above-mentioned insulation spacer is L-type, covers top and the back side of power output interface.
Compared with prior art, above-mentioned Switching Power Supply, by primary circuit and secondary circuit are placed on respectively on two different circuit boards, is spliced by row's pin and transformer, can effectively utilize space, improve power density, simple to operate, be easy to realize, and cost is low, safe and reliable.
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the Switching Power Supply front view of the present embodiment;
Fig. 2 is the Switching Power Supply right view of the present embodiment;
Fig. 3 is the Switching Power Supply rearview of the present embodiment;
Fig. 4 is the switching power circuit block diagram of the present embodiment.
Label declaration:
Primary circuit plate 1; Protective tube 11; Elementary filter rectifier 12; Voltage sampling circuit 13; Transformer 14;
Secondary circuit board 2; Secondary commutation filter circuit 21; Optical coupler 22; Control circuit 23; Power output interface 24;
Insulation spacer 3;
Row's pin 4.
Embodiment
As Figure 1-3, a kind of Switching Power Supply, comprise primary circuit plate 1, secondary circuit board 2, insulation spacer 3, and for connecting row's pin 4 of above-mentioned two circuit boards, wherein, install in opposite directions in 2 two fronts of primary circuit plate 1 and secondary circuit board, and the components and parts on two circuit boards can utilize the other side's space mutually, and volume is significantly dwindled; And the isolation distance that can guarantee strong and weak electricity is greater than the safe distance of regulation.Protective tube 11, elementary filter rectifier 12, voltage sampling circuit 13 and transformer 14 are installed on above-mentioned primary circuit plate 1, above-mentioned secondary circuit board 2 is provided with secondary commutation filter circuit 21, optical coupler 22, control circuit 23 and power output interface 24, above-mentioned transformer 14 and power output interface 24 arranged in dislocation, make two circuit board distances nearer, can save more spaces in vertical direction.In the present embodiment, insulation spacer 3 is L-type, cover top and the back side of power output interface 24, between power output interface 24 and transformer 14, isolation for transformer 14 and power output interface 24, because insulation spacer 3 is inserted between primary circuit plate 1 and the components and parts of secondary circuit board 2, without being fixed by other means, simple and reliable again.
In the present embodiment, above-mentioned transformer 14 adopts high frequency transformer, and between primary circuit plate 1 and secondary circuit board 2, its input is connected with primary circuit plate 1, and output is connected with secondary circuit board 2, and whole Switching Power Supply structure is also played a supporting role.
Above-mentioned power output interface 24 adopts USB interface, also can select other interfaces, as two core plugs or multi-pin connector etc.
In the present embodiment, control circuit 23 comprises control chip and the metal-oxide-semiconductor being attached thereto, and it is the chip of Samwin SW265613c02 that described control chip is selected model, for the collection of voltage feedback signal, processing etc.
As shown in Figure 4, the operation principle of above-mentioned Switching Power Supply is: the alternating voltage of 220V is through protective tube 11, after elementary current rectifying and wave filtering circuit 12, change pulsating dc voltage into, and then by control circuit 23, transformer 14 step-downs, then through secondary commutation filter circuit 21, eliminate after ripple, change stable 5V direct voltage into, finally by USB interface, flow to load, the 5V direct voltage of final output is further by voltage sampling circuit 13, optical coupler 22 and row's pin 4 feed back to control circuit 23 by real-time voltage, pass through metal-oxide-semiconductor, for stablizing of regulation output voltage, in the utility model, row's pin 4 both can, for the transmission of feedback signal, can, for the connection of primary circuit plate 1 and secondary circuit board 2, be played a supporting role to whole Switching Power Supply structure again.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present utility model.

Claims (7)

1. a Switching Power Supply, it is characterized in that: comprise primary circuit plate, secondary circuit board, insulation spacer, and for connecting row's pin of above-mentioned two circuit boards, wherein, primary circuit plate and secondary circuit board are installed in opposite directions, insulation spacer is between the power output interface of secondary circuit board and the transformer of primary circuit plate, for the isolation of transformer and output interface.
2. a kind of Switching Power Supply as claimed in claim 1, it is characterized in that: protective tube, elementary filter rectifier, voltage sampling circuit and transformer are installed on above-mentioned primary circuit plate, alternating voltage changes pulsating dc voltage into after protective tube, elementary current rectifying and wave filtering circuit, and then passes through transformer pressure-reducing.
3. a kind of Switching Power Supply as claimed in claim 2, it is characterized in that: above-mentioned secondary circuit board is provided with secondary commutation filter circuit, optical coupler, control circuit and power output interface, pulsating dc voltage is through control circuit, after transformer pressure-reducing, again after secondary commutation filter circuit is eliminated ripple, changing galvanic current into presses, finally by power output interface, flow to load, above-mentioned control circuit comprises control chip and metal-oxide-semiconductor, the direct voltage of final output further passes through voltage sampling circuit, optical coupler and row pin by real-time voltage signal feedback to control circuit, pass through metal-oxide-semiconductor, stablizing of regulation output voltage.
4. a kind of Switching Power Supply as claimed in claim 1, is characterized in that: above-mentioned transformer adopting high frequency transformer, and between primary circuit plate, secondary circuit board, its input is connected with primary circuit plate, and output is connected with secondary circuit board.
5. a kind of Switching Power Supply as claimed in claim 1, is characterized in that: above-mentioned transformer and power output interface arranged in dislocation.
6. a kind of Switching Power Supply as claimed in claim 1, is characterized in that: above-mentioned power output interface adopts wherein a kind of in USB interface, two core plugs or multi-pin connector.
7. a kind of Switching Power Supply as claimed in claim 1, is characterized in that: above-mentioned insulation spacer is L-type, covers top and the back side of power output interface.
CN201320466128.8U 2013-07-31 2013-07-31 Switch power source Active CN203416176U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320466128.8U CN203416176U (en) 2013-07-31 2013-07-31 Switch power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320466128.8U CN203416176U (en) 2013-07-31 2013-07-31 Switch power source

Publications (1)

Publication Number Publication Date
CN203416176U true CN203416176U (en) 2014-01-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320466128.8U Active CN203416176U (en) 2013-07-31 2013-07-31 Switch power source

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104325388A (en) * 2014-09-30 2015-02-04 无锡康柏斯机械科技有限公司 Structure of grinding machine controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104325388A (en) * 2014-09-30 2015-02-04 无锡康柏斯机械科技有限公司 Structure of grinding machine controller

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