Title:
SWITCHED-MODE POWER SUPPLY AND OPERATING METHOD FOR A SWITCHED-MODE POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2013/167337
Kind Code:
A3
Abstract:
The invention relates to a switched-mode power supply (1) having a first switching stage (6) for generating a rectified intermediate voltage (Vc) from a primary AC voltage (Vp), having a memory element (7) for buffer storing the intermediate voltage (Vc) which is generated by the first switching stage (6), and having a second switching stage (8) for generating a secondary output voltage (Vs) from the buffer-stored intermediate voltage (Vc). The switched-mode power supply (1) has a control circuit (9) for activating and deactivating the first switching stage (6), wherein the control circuit (9) is designed to activate the first switching stage (6) for a subregion, which is determined by the control circuit (9), of a first half-wave (11) of the primary AC voltage (Vp) and to deactivate the first switching stage (6) for at least one subsequent half-wave (12, 13) of the primary AC voltage (Vp). The invention also relates to an operating method for operating a switched-mode power supply (1) of this kind.
Inventors:
RUEF ROBERT (DE)
STERZIK WILLI (DE)
STERZIK WILLI (DE)
Application Number:
PCT/EP2013/057608
Publication Date:
July 17, 2014
Filing Date:
April 11, 2013
Export Citation:
Assignee:
FUJITSU TECH SOLUTIONS IP GMBH (DE)
International Classes:
H02M3/158
Foreign References:
| US20100182812A1 | 2010-07-22 | |||
| US20100156377A1 | 2010-06-24 | |||
| US20110013434A1 | 2011-01-20 | |||
| US20110101775A1 | 2011-05-05 | |||
| DE19616726A1 | 1997-10-30 |
Attorney, Agent or Firm:
EPPING HERMANN FISCHER PATENTANWALTSGESELLSCHAFT MBH (Munich, DE)
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