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An adapter power supply and its control method

A technology of adapters and power supplies, applied in control/regulation systems, instruments, electrical components, etc., can solve the problems of low overall efficiency, large volume, and volume reduction, so as to improve power density, reduce consumption, increase average efficiency and The effect of no-load loss

Active Publication Date: 2022-05-17
FSP POWERLAND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] figure 1 In the embodiment shown, the capacitor C2 is a high-voltage electrolytic capacitor, which is usually large in size. Such a traditional solution has low overall efficiency and limited volume reduction.

Method used

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  • An adapter power supply and its control method
  • An adapter power supply and its control method
  • An adapter power supply and its control method

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Embodiment Construction

[0021] In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] like figure 2 As shown, the structural block diagram of the adapter power supply of the present invention includes an AC power input terminal INPUT, a first rectification and filtering circuit 21, a second rectification and filtering circuit 22, a DC-to-DC conversion circuit 23, and a DC output terminal OUTPUT. The first rectification and filtering circ...

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Abstract

The invention discloses an adapter power supply and a control method thereof, comprising a first rectification and filtering circuit, a second rectification and filtering circuit, and a DC-DC conversion circuit, the input ends of the first rectification and filtering circuit and the second rectification and filtering circuit are connected in parallel After connecting the AC input power, the output end is connected in parallel to the input end of the DC-DC conversion circuit. When the voltage of the input AC power is low, the first rectifying and filtering circuit works. When the voltage of the input AC power is high, the The second rectification filter circuit works. The adapter power supply of the invention reduces no-load loss and has higher average efficiency.

Description

technical field [0001] The invention relates to the technical field of electric energy conversion, and in particular relates to an AC-DC electric energy conversion device. Background technique [0002] like figure 1 As shown, it is a traditional two-stage converter, including: an active filter circuit 11 and a DC-DC conversion circuit 12, the active filter circuit 11 includes a rectification module 111 and a power factor correction module 112, and the rectification module 111 is The full-bridge rectifier circuit includes diodes D1, D2, D3 and D4, the diodes D1, D2, D3 and D4 form a full-bridge circuit, the input terminal INPUT of the rectifier module 11 accepts AC power input; the output terminals of the rectifier module 111 are connected in parallel Capacitor C1, the two ends of the capacitor C1 are connected in parallel with the series circuit of the inductor L1 and the switch Q1, the two ends of the switch Q1 are connected in parallel with the series circuit of the diode...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/08H02M3/155H02M3/335
CPCH02M7/08H02M3/155H02M3/33523H02M1/007
Inventor 孙巨禄徐明周军
Owner FSP POWERLAND TECH