Title:
SWITCHED-MODE POWER SUPPLIES HAVING BURST MODE OPERATION FOR REDUCED POWER CONSUMPTION
Document Type and Number:
WIPO Patent Application WO/2018/176423
Kind Code:
A1
Abstract:
Switched-mode power converters and control methods are disclosed. Example power converters include an input terminal (102), an output terminal (104), and a transformer (106) coupled between the input terminal (102) and the output terminal (104). The transformer (106) includes a primary winding (108) and a secondary winding (110). The power supply (100) also includes at least one switch (112) coupled to the primary winding (108), and a primary controller (114) coupled to the at least one switch (112) to control switching operation of the at least one switch (112). The primary controller (114) includes a voltage reference (116). The power supply (100) further includes a secondary controller (118) configured to detect a no load condition at the output terminal (104), and operate the primary controller (114) in a burst mode by adjusting the voltage reference (116) of the primary controller (114) when the secondary controller (118) detects the no load condition at the output terminal (104).
Inventors:
LIU JUN (CN)
LIU QINGFENG (CN)
GONG XUN (CN)
LI ZHE (CN)
LIU QINGFENG (CN)
GONG XUN (CN)
LI ZHE (CN)
Application Number:
PCT/CN2017/079126
Publication Date:
October 04, 2018
Filing Date:
March 31, 2017
Export Citation:
Assignee:
ASTEC INT LTD (CN)
International Classes:
H02M3/335
Foreign References:
| US20110085354A1 | 2011-04-14 | |||
| US20140098578A1 | 2014-04-10 | |||
| US20140254215A1 | 2014-09-11 | |||
| US20080043504A1 | 2008-02-21 | |||
| US20130141944A1 | 2013-06-06 | |||
| CN101207333A | 2008-06-25 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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