Title:
SWITCHING MODE POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2017/020189
Kind Code:
A1
Abstract:
A switching mode power supply is configured to: receive, via a voltage conversion unit (101), an alternating current (AC) input voltage, filter and convert the AC input voltage, and generate a high-frequency AC voltage and output the same; then receive, via a plurality of passive switch units (102), the high-frequency AC voltage, rectify and filter the high-frequency AC voltage, generate a constant current and output the same to a plurality of loads; wherein the passive switch units (102) only employ passive components such as a current limiting capacitor (C1), a rectifier circuit, and a filter capacitor (C2) to realize driving of the independent constant current to the plurality of loads. In comparison to driving a plurality of constant currents via an AC-DC converter and a plurality of DC-DC converters in the prior art, the embodiment according to the invention is simple in system structure and low in cost.
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Inventors:
CHEN ZHONG (CN)
SUN XIAO (CN)
SUN XIAO (CN)
Application Number:
PCT/CN2015/085770
Publication Date:
February 09, 2017
Filing Date:
July 31, 2015
Export Citation:
Assignee:
CHANGZHOU LUMIXESS TECH CO LTD (CN)
International Classes:
H02M7/08
Foreign References:
| CN201708976U | 2011-01-12 | |||
| CN2836403Y | 2006-11-08 | |||
| CN101718405A | 2010-06-02 | |||
| CN101902853A | 2010-12-01 | |||
| US20020154523A1 | 2002-10-24 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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