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Title:
TWO-STAGE SWITCH POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2018/171613
Kind Code:
A1
Abstract:
Disclosed is a two-stage switch power supply (10), comprising an input rectification module (101), a first control module (102), a first conversion module (103), a second control module (106), a second conversion module (104) and a voltage-limiting switch module (105). The first control module controls the first conversion module so that same carries out voltage conversion on a rectification filtering voltage signal so as to acquire a power supply voltage and a bus voltage; the first conversion module outputs the power supply voltage to the first control module, and outputs the bus voltage to the second conversion module, the voltage-limiting switch module and the second control module; and the voltage-limiting switch module controls, when the bus voltage reaches a pre-set voltage, the second control module so that same outputs a voltage signal to the second conversion module so as to control the second conversion module so that same converts the bus voltage and then outputs the voltage to a load. Thus, the problem of a switch power supply being in an intermittent working state due to a voltage output by a first conversion module being low is avoided, and the overall structure is simple.

Inventors:
MAO, Qiuxiang (1-4 Floor, A-11 1 Floor, A-10, Qing Hu Silicon Valley Power Ind.,Qing Hu Community, Long Hua Office, Long Hua Distric, Shenzhen Guangdong 0, 518000, CN)
CHEN, Zhiwen (1-4 Floor, A-11 1 Floor, A-10, Qing Hu Silicon Valley Power Ind.,Qing Hu Community, Long Hua Office, Long Hua Distric, Shenzhen Guangdong 0, 518000, CN)
TANG, Jiangxin (1-4 Floor, A-11 1 Floor, A-10, Qing Hu Silicon Valley Power Ind.,Qing Hu Community, Long Hua Office, Long Hua Distric, Shenzhen Guangdong 0, 518000, CN)
ZHONG, Guoji (1-4 Floor, A-11 1 Floor, A-10, Qing Hu Silicon Valley Power Ind.,Qing Hu Community, Long Hua Office, Long Hua Distric, Shenzhen Guangdong 0, 518000, CN)
Application Number:
CN2018/079740
Publication Date:
September 27, 2018
Filing Date:
March 21, 2018
Export Citation:
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Assignee:
TRIDONIC GMBH & CO. KG (Faerbergasse 15, 6851 Dornbirn, Dornbirn, AT)
MAO, Qiuxiang (1-4 Floor, A-11 1 Floor, A-10, Qing Hu Silicon Valley Power Ind.,Qing Hu Community, Long Hua Office, Long Hua Distric, Shenzhen Guangdong 0, 518000, CN)
International Classes:
H02M1/36; H02M1/32
Foreign References:
CN1596503A2005-03-16
CN205160363U2016-04-13
CN204424869U2015-06-24
US20080111594A12008-05-15
Attorney, Agent or Firm:
SHENZHEN ZHONGYI PATENT AND TRADEMARK OFFICE (4th Fl. Old Shenzhen Special Zone Newspaper Building, No. 1014 Shennan Middle Road Futian Distric, Shenzhen Guangdong 8, 518028, CN)
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