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Integrated switch power and working method thereof

An integrated switch and power supply technology, applied in the direction of circuits, inductors, electrical components, etc., can solve the problems of large number of components, difficulty in comprehensively realizing the realization index, and difficulty in further improving power conversion efficiency, so as to achieve the effect of improving conversion efficiency

Inactive Publication Date: 2008-08-06
陈威伦 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned switching power supply with power factor correction has the following disadvantages: the control principle and circuit are complex, the total number of components is large, there are many independent control factors, and it is difficult to further improve the efficiency of power conversion
[0010] At present, there are very few practical products that combine the two stages of the power factor correction unit and the switching power conversion unit, or the products that combine the above three stages, and there are very few products that combine the above two magnetic components. The reason is that : First, it is difficult to comprehensively realize the realization indicators of two or three levels; second, the auxiliary control after integration is complicated

Method used

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  • Integrated switch power and working method thereof
  • Integrated switch power and working method thereof
  • Integrated switch power and working method thereof

Examples

Experimental program
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Embodiment 1

[0063] Such as image 3 As shown, an integrated switching power supply in this embodiment includes: an AC rectification input unit 301 for converting the AC power into a unipolar DC power; a DC output rectification unit 303 for outputting the DC power after rectification;

[0064] It also includes a conversion switch unit 302 for converting the unipolar direct current into a stable high-voltage direct current, and isolating the high-voltage direct current to the direct-current output stage.

[0065] Such as Figure 5 and Figure 6 It is the schematic diagram of the half-bridge topology of the transfer switch unit, Figure 7 It is the circuit diagram of this embodiment. Wherein the conversion switch unit 302 includes: an energy storage inductor Lpfc, a conversion transformer T1, a capacitor C, a resistor Rsns, a first diode CD1, a second diode D1, a first switch tube PFC1 and a second switch tube SW1 ;

[0066] The transfer switch unit is driven by direct current;

[0067...

Embodiment 2

[0074] Such as Figure 4 As shown, this embodiment provides an integrated switching power supply, including a DC output rectification unit 402 for outputting the DC power after rectification, and a conversion switch unit 401 for converting the AC power into a unipolar DC power, and converting the unipolar The direct current is transformed into a stable high voltage direct current, and the high voltage direct current is isolated and delivered to the direct current output stage.

[0075] Such as Figure 8 , Figure 9 , Figure 10 Shown is the schematic diagram of the full-bridge topology of this embodiment. Such as Figure 13 Shown is the working circuit diagram of the full bridge topology of this embodiment.

[0076] Wherein, the switch unit 401 includes: an energy storage inductor Lpfc, a first transducing transformer T1, a second transducing transformer T2, a capacitor C, a first controllable switching device PFC1, a second controllable switching device PFC2, The third ...

Embodiment 3

[0086] This embodiment provides a working method of an integrated switching power supply, such as image 3 As shown, the integrated switching power supply includes: AC rectification input unit 301, DC output rectification unit 303, transfer switch unit 302;

[0087] The AC rectification input unit 301 converts AC power into unipolar DC power;

[0088] The first controllable switch device, the first unidirectional electronic device, a capacitor and a resistor are connected in series, and the energy storage inductance is connected to the connection point between the first controllable switch device and the first unidirectional electronic device to form A step-up switching circuit, which converts unipolar direct current into high-voltage direct current;

[0089] The transformer, the first controllable switch device, the second controllable switch device, the first unidirectional electronic device, and the second unidirectional electronic device form a forward switching circuit, ...

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Abstract

An integrated switching power supply and its operation method are disclosed , in which the switching power supply comprises an AC rectification and input unit (301) ; a DC output and rectification unit (303) and a changeover switching unit (302). The said changeover switching unit comprises an energy storage inductor, a transduction transformer, a capacitor, a first undirectional electronic means, a second undirectional electronic means, a first controllable switching device, and a second controllable switching device.

Description

[0001] technical field [0002] The present invention relates to a switching power supply and a working method, in particular to a switching power supply with an AC rectification unit, a power factor correction unit, a power switching conversion unit and a magnetic circuit integration, specifically, to an integrated switching power supply and its working method. Background technique [0003] Such as figure 1 Shown is the existing AC rectification unit, power factor correction unit, power switch converter [0004] The working principle block diagram of the replacement unit and the DC rectification unit. Such as figure 2 Shown is an existing circuit diagram including an AC rectification unit, a power factor correction unit, a power switch conversion unit and a DC rectification unit. [0005] As shown in the figure, the existing switching power supply with power factor correction is at least three levels: [0006] The first stage is an AC rectification input unit: convert A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/28H02M3/335
CPCH02M2001/007Y02B70/126H02M1/4208H01F38/00H01F27/24H02M7/217H02M1/007Y02B70/10
Inventor 陈威伦陈军
Owner 陈威伦
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