Switching mode power supply

Details Switching mode power supply Switching mode power supply

2007-05-15

2007-05-15

Han, Jessica (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S021080, C363S021160, C363S097000

Reexamination Certificate

active

11153819

ABSTRACT:
In one embodiment, a switching mode power supply (SMPS) include: a power supply for supplying power to a secondary coil of a transformer according to an operation of a main switch, the main switch being coupled to a primary coil of the transformer; a feedback circuit for generating a feedback voltage corresponding to an output voltage; a control module for stopping the main switch when the feedback voltage is lower than a reference voltage in a standby operation mode; an integrated circuit (IC) power unit for generating a constant voltage, the IC power supply being coupled to the secondary coil of the transformer; and a current generator for using the constant voltage to generate a plurality of constant currents for operating a plurality of ICs, and generating a constant current from among the constant currents when the main switch performs no switching on/off operation.

REFERENCES:
patent: 6252783 (2001-06-01), Huh et al.
patent: 6549429 (2003-04-01), Konno
patent: 6646894 (2003-11-01), Hong et al.

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