Switching power supply

Details Switching power supply Switching power supply

2007-02-01

2009-02-17

Laxton, Gary L (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S021150, C363S097000

Reexamination Certificate

active

07492615

ABSTRACT:
A feedback circuit (3) generates an error amplification signal VEAO for stabilizing an output voltage Vo at the reference voltage. The reference voltage is set beforehand in the feedback circuit (3). The peak value of drain current ID passing through a switching element (1) is controlled by the error amplification signal VEAO and the output voltage Vo is stabilized. Meanwhile, when a load (132) increases, a reference voltage variable circuit (13) increases the internal reference voltage of the feedback circuit (3) based on the error amplification signal VEAO, so that fluctuations in output voltage due to load fluctuations are reduced.

REFERENCES:
patent: 6529391 (2003-03-01), Yoshinaga et al.
patent: 7027313 (2006-04-01), Amei
patent: 7161815 (2007-01-01), Mori
patent: 2002/0145888 (2002-10-01), Yoshinaga et al.
patent: 7-170731 (1995-07-01), None

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