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Low-voltage power supply multi-path output power

A multi-channel output, low-voltage power supply technology, applied in the direction of output power conversion device, DC power input conversion to DC power output, electrical components, etc., can solve the problems of complex peripheral circuit design and low stability of the modulator, and achieve improved Effects of load dynamic performance and cross-regulation performance, improved reliability, and simplified circuit design

Inactive Publication Date: 2010-12-22
AVIC NO 631 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems of complex design and low stability of the existing modulator peripheral circuit, the present invention provides a low-voltage power supply multi-output power supply

Method used

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  • Low-voltage power supply multi-path output power
  • Low-voltage power supply multi-path output power

Examples

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Embodiment Construction

[0022] see figure 1 , the low-voltage power supply multi-output power supply provided by the present invention includes a filter circuit 1, a single-ended forward power conversion circuit 2, an output rectification high-frequency filter circuit 3, a low dropout voltage regulator 4, a sampling circuit 5, and a feedback isolation circuit 6 , a PWM control circuit 7, and a self-starting and auxiliary power supply circuit 8, the filter circuit 1 passes through a single-ended forward power conversion circuit 2, an output rectification high-frequency filter circuit 3, a low dropout voltage regulator 4, a sampling circuit 5, and a feedback The isolation circuit 6 is connected to the control circuit 7, or connected to the control circuit 7 via the single-ended forward power conversion circuit 2, the output rectification high-frequency filter circuit 3, the sampling circuit 5, and the feedback isolation circuit 6; the self-starting and auxiliary power circuit 8 are set Between the filt...

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PUM

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Abstract

The invention provides a low-voltage power supply multi-path output power comprising a filtration circuit, a power conversion circuit, an output rectification high-frequency filtration circuit, a low differential voltage stabilizer, a sampling circuit, a feedback isolation circuit, a control circuit and a self-start and auxiliary power circuit. The filtration circuit, the power conversion circuit, the output rectification high-frequency filtration circuit and the low differential voltage stabilizer are electrically connected in sequence; the sampling circuit is connected to the output rectification high-frequency filtration circuit; the feedback isolation circuit is connected to the sampling circuit; the control circuit is arranged between the feedback isolation circuit and the power conversion circuit; the self-start and auxiliary power circuit are connected into the control circuit; the power conversion circuit is a single-end forward power conversion circuit; and the control circuit is a current control-type pulse width modulation circuit in the third generation of CMOS(Complementary Metal Oxide Semiconductor) technology. The invention solves the technical problems of complex design and low stability of a peripheral circuit of the traditional modulator and has the advantages of reasonable design, high practicability, and the like.

Description

technical field [0001] The invention relates to a power supply, in particular to a multi-channel output power supply for low-voltage power supply. Background technique [0002] In electronic products, power supply is essential, but in most distributed power supply systems and low-voltage power supply systems, the bipolar voltage-controlled pulse width modulators widely used in switching power supplies have the disadvantages of complex peripheral circuit design and poor stability. low-level disadvantages. Contents of the invention [0003] In order to solve the technical problems of complex design and low stability of the peripheral circuit of the existing modulator, the invention provides a multi-channel output power supply for low-voltage power supply. [0004] Technical scheme of the present invention is as follows: [0005] A multi-output power supply for low-voltage power supply, including a filter circuit, a power conversion circuit, an output rectification high-fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
Inventor 杨宁惠晓强
Owner AVIC NO 631 RES INST
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