Switched-mode power supply with low power loss standby operation

Details Switched-mode power supply with low power loss standby operation Switched-mode power supply with low power loss standby operation

1998-07-13

1999-11-30

Riley, Shawn

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

H02M 3335

Patent

active

059953888

ABSTRACT:
A switched-mode power supply includes a circuit device with which a primary side is fed by a significantly reduced rectified voltage derived from the AC mains power supply voltage, during a standby operating mode. A phase gating control configuration, a capacitive voltage divider or a step-down controller are preferably used therefor. Power consumption in the standby operating mode is reduced approximately in proportion to the square of the primary-voltage reduction factor.

REFERENCES:
patent: 4481429 (1984-11-01), Christopher
patent: 5189600 (1993-02-01), Keck et al.
patent: 5453921 (1995-09-01), Shutts
patent: 5812383 (1998-09-01), Majid et al.
Patent Abstracts of Japan No.l 07-308065 (Naohisa), dated Nov. 21, 1995.
Patent Abstracts of Japan No. 61-247166 (Tomonori), dated Nov. 4, 1986.

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