Adaptor power supply and control method thereof
A technology for adapters and power supplies, which is applied in the direction of control/regulation systems, instruments, electrical components, etc., can solve the problems of volume reduction, low overall efficiency, and large volume, so as to reduce consumption, increase power density, increase average efficiency and The effect of no-load loss
Active Publication Date: 2019-12-20
FSP POWERLAND TECH
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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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[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] Such as 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 c...
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The invention discloses an adaptor power supply and a control method thereof. The adaptor power supply comprises a first rectification filtering circuit, a second rectification filtering circuit and aDC-DC conversion circuit, wherein input ends of the first rectification filtering circuit and the second rectification filtering circuit are connected in parallel and then is connected with AC inputelectric energy, output ends of the first rectification filtering circuit and the second rectification filtering circuit are connected in parallel and then is connected with an input end of the DC-DCconversion circuit, the first rectification filtering circuit works when a voltage of the input AC electric energy is relatively low, and the second rectification filtering circuit works when the voltage of the input AC electric energy is relatively high. By the adaptor power supply, the no-load loss is reduced, and the adaptor power supply has relatively high 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] Such as 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 di...
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Login to View More IPC IPC(8): H02M7/08H02M3/155H02M3/335
CPCH02M7/08H02M3/155H02M3/33523H02M1/007
Inventor 孙巨禄徐明周军
Owner FSP POWERLAND TECH