CN201450457U - Bilinear buck-boost switching power supply - Google Patents
Bilinear buck-boost switching power supply Download PDFInfo
- Publication number
- CN201450457U CN201450457U CN2009200581536U CN200920058153U CN201450457U CN 201450457 U CN201450457 U CN 201450457U CN 2009200581536 U CN2009200581536 U CN 2009200581536U CN 200920058153 U CN200920058153 U CN 200920058153U CN 201450457 U CN201450457 U CN 201450457U
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- circuit
- power supply
- switching power
- buck
- voltage
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Abstract
The utility model discloses a bilinear buck-boost switching power supply comprising a rectification filter circuit, a half-bridge switch converting circuit, a DC converting circuit and a linear buck-boost converting circuit which is connected with the DC converting circuit and a DC voltage output end. AC input voltage is converted into DC output voltage sequentially via the rectification filter circuit, the half-bridge switch converting circuit and the DC converting circuit; and the DC output voltage is output to a load via the linear buck-boost converting circuit. The bilinear buck-boost switching power supply has dual-temperature double-control linear DC output voltage and the output voltage has the characteristic of delayed linear buck-boost; used as a special embedded switching power supply of refrigerators and electronic wine cabinets, the bilinear buck-boost switching power supply can effectively protect semiconductor refrigerating plates from the impact of transient switching current, greatly prolongs the service life of the refrigerating plates, and has obvious effect of improving the performance of electric devices such as the refrigerators, the electronic wine cabinets and the like.
Description
Technical field
The utility model relates to Switching Power Supply, particularly a kind of Switching Power Supply with bilinearity buck function.
Background technology
Switching Power Supply is one of visual plant of electric equipments such as refrigerator, Electronic Wine Cabinet, because the conventional switch power supply is when energized, the transient current that instantaneous output is very big, its electric current, magnitude of voltage transient changing, cooling piece to electric equipments such as refrigerator, Electronic Wine Cabinets causes very big impact easily, and then has influence on the useful life of cooling piece.
Summary of the invention
Based on the defective that exists in the prior art, the purpose of this utility model is to provide a kind of linear output voltage with double temperature double control, and output voltage has the Switching Power Supply that postpones linear ascending, descending characteristic.
The technical scheme that the utility model adopted: a kind of bilinearity buck Switching Power Supply, comprise current rectifying and wave filtering circuit, half-bridge switch translation circuit, DC transfer circuit, and the linear lifting/voltage reducing translation circuit that is connected in DC transfer circuit and dc voltage output end, AC-input voltage is transformed to VD through described current rectifying and wave filtering circuit, half-bridge switch translation circuit, DC transfer circuit successively, and described VD exports load to through linear lifting/voltage reducing translation circuit.
The input of above-mentioned current rectifying and wave filtering circuit is connected with the electromagnetic compatibility circuit, and AC-input voltage is connected with current rectifying and wave filtering circuit through this electromagnetic compatibility circuit.
The output of above-mentioned DC transfer circuit conversion detects protective circuit by sampling and is connected with pulse-width modulation circuit.Described pulse-width modulation circuit also is connected with the half-bridge switch translation circuit.
The input of above-mentioned linear lifting/voltage reducing translation circuit also is connected with external control signal.
The load of above-mentioned dc voltage output end is a semiconductor chilling plate.
The utlity model has the VD of double temperature double control linearity; and output voltage has the linear ascending, descending characteristic of delay; built in switch power supply as refrigerator, Electronic Wine Cabinet special use; can protect semiconductor chilling plate to avoid the impact of transient state switching current effectively, prolong the useful life of cooling piece greatly.Because of the power-supply system soft start, its overall security, reliability, life-span will significantly improve simultaneously; The transformation system of this Switching Power Supply also has functions such as overcurrent, short-circuit protection; its stable performance; and can satisfy electrical strength, electromagnetic compatibility (EMC) standard-required, be applicable to the II electric appliances, have remarkable result for the performance that improves electric equipments such as refrigerator, Electronic Wine Cabinet.
Description of drawings
Fig. 1 is the circuit theory diagrams of Switching Power Supply described in the utility model;
Fig. 2 is the concrete electronic-circuit diagram of Switching Power Supply described in the utility model.
Embodiment
Below in conjunction with accompanying drawing concrete structure of the present utility model is further described.
As shown in Figure 1; bilinearity buck Switching Power Supply described in the utility model; comprise the electromagnetic compatibility circuit; current rectifying and wave filtering circuit; the half-bridge switch translation circuit; DC transfer circuit; sampling detects protective circuit; pulse-width modulation circuit; and the linear lifting/voltage reducing translation circuit that is connected in DC transfer circuit and dc voltage output end; AC-input voltage is passed through the electromagnetic compatibility circuit successively; current rectifying and wave filtering circuit; the half-bridge switch translation circuit; DC transfer circuit is transformed to VD (12V); described VD exports load (being semiconductor chilling plate in the utility model) to through linear lifting/voltage reducing translation circuit. in addition; the output of described DC transfer circuit conversion detects protective circuit by sampling and is connected with pulse-width modulation circuit; this pulse-width modulation circuit also is connected with the half-bridge switch translation circuit. and the input of described linear lifting/voltage reducing translation circuit also is connected with external control signal (0/1); the size that is used for control output voltage. as shown in Figure 2; for detailed electronic-circuit diagram of the present utility model, be not described in detail at this.
Specified input voltage of the present utility model is AC100-130V and AC220-240V, and specified incoming frequency is 50Hz/60Hz, specified input current: being 1.8A during AC100-130V, is 1A during AC220-240V; Rated output voltage is DC12.3V ± 0.5V.After utilizing linear lifting/voltage reducing translation circuit, the rise time that its output dc voltage reaches rated value is 30 seconds, and it is 30 seconds that output dc voltage drops to rated value fall time.And adopt two groups of current MOS FET of low-resistance Chinese People's Anti-Japanese Military and Political College pipe as the output switches, contactless, noiselessness, long-life.Compare with the conventional switch power supply; VD with double temperature double control linearity; and output voltage has the linear ascending, descending characteristic of delay; built in switch power supply as refrigerator, Electronic Wine Cabinet special use; can protect semiconductor chilling plate to avoid the impact of transient state switching current effectively, prolong the useful life of cooling piece greatly.Simultaneously, because of the power-supply system soft start, its overall security, reliability, useful life are improved; The transformation system of this Switching Power Supply also has functions such as overcurrent, short-circuit protection; its stable performance; and can satisfy electrical strength, electromagnetic compatibility (EMC) standard-required, be applicable to the II electric appliances, have remarkable result for electric equipment performances such as improving refrigerator, Electronic Wine Cabinet.
Claims (6)
1. bilinearity buck Switching Power Supply, comprise current rectifying and wave filtering circuit, half-bridge switch translation circuit, DC transfer circuit, AC-input voltage is transformed to VD through described current rectifying and wave filtering circuit, half-bridge switch translation circuit, DC transfer circuit successively, it is characterized in that, also comprise the linear lifting/voltage reducing translation circuit that is connected in DC transfer circuit and dc voltage output end, described VD exports load to through linear lifting/voltage reducing translation circuit.
2. bilinearity buck Switching Power Supply according to claim 1 is characterized in that the input of described current rectifying and wave filtering circuit is connected with the electromagnetic compatibility circuit, and AC-input voltage is connected with current rectifying and wave filtering circuit through this electromagnetic compatibility circuit.
3. bilinearity buck Switching Power Supply according to claim 1 is characterized in that, the output of described DC transfer circuit conversion detects protective circuit by sampling and is connected with pulse-width modulation circuit.
4. bilinearity buck Switching Power Supply according to claim 3 is characterized in that described pulse-width modulation circuit also is connected with the half-bridge switch translation circuit.
5. bilinearity buck Switching Power Supply according to claim 1 is characterized in that the input of described linear lifting/voltage reducing translation circuit also is connected with external control signal.
6. bilinearity buck Switching Power Supply according to claim 1 is characterized in that the load of described dc voltage output end is a semiconductor chilling plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200581536U CN201450457U (en) | 2009-06-10 | 2009-06-10 | Bilinear buck-boost switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200581536U CN201450457U (en) | 2009-06-10 | 2009-06-10 | Bilinear buck-boost switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450457U true CN201450457U (en) | 2010-05-05 |
Family
ID=42555180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200581536U Expired - Fee Related CN201450457U (en) | 2009-06-10 | 2009-06-10 | Bilinear buck-boost switching power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN201450457U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426471A (en) * | 2011-12-09 | 2012-04-25 | 佛山市南庄广昌电器塑料有限公司 | Adjustable constant current and temperature control soft protection module for switch power supply |
| CN104180576A (en) * | 2014-09-03 | 2014-12-03 | 四川航天系统工程研究所 | Low-temperature semiconductor refrigerator and method for providing linear voltage for chilling plates of refrigerator |
| CN110109494A (en) * | 2019-05-28 | 2019-08-09 | 东莞铭普光磁股份有限公司 | The control method and control device of thermoelectric cooler |
-
2009
- 2009-06-10 CN CN2009200581536U patent/CN201450457U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426471A (en) * | 2011-12-09 | 2012-04-25 | 佛山市南庄广昌电器塑料有限公司 | Adjustable constant current and temperature control soft protection module for switch power supply |
| CN104180576A (en) * | 2014-09-03 | 2014-12-03 | 四川航天系统工程研究所 | Low-temperature semiconductor refrigerator and method for providing linear voltage for chilling plates of refrigerator |
| CN104180576B (en) * | 2014-09-03 | 2016-08-17 | 四川航天系统工程研究所 | Cryogenic semiconductor refrigerator and the method providing linear voltage for its cooling piece |
| CN110109494A (en) * | 2019-05-28 | 2019-08-09 | 东莞铭普光磁股份有限公司 | The control method and control device of thermoelectric cooler |
| CN110109494B (en) * | 2019-05-28 | 2021-08-24 | 东莞铭普光磁股份有限公司 | Control method and control device for thermoelectric refrigerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20130610 |