Switching power supply

Details Switching power supply Switching power supply

2005-11-01

2005-11-01

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S284000, C323S275000

Reexamination Certificate

active

06960906

ABSTRACT:
The present invention provides a switching power supply which reduces power consumption in a standby state and improves power supply efficiency. At the time of starting a standby mode in which the output voltage VFB of the IV converter exceeds a standby detection upper limit voltage from a reference voltage source, the switching operation of the switching element is stopped. This stopping reduces the output voltage VFB of the IV converter along with a power supply voltage VO. When the output voltage VFB is lower than a standby detection lower limit voltage from the reference voltage source, the switching operation of the switching element is resumed.

REFERENCES:
patent: 5514951 (1996-05-01), Halim et al.
patent: 6580258 (2003-06-01), Wilcox et al.
patent: 6724174 (2004-04-01), Esteves et al.
patent: 02-168855 (1990-06-01), None
patent: 8-289542 (1996-11-01), None
patent: 10-304658 (1998-11-01), None
patent: 2001-224169 (2001-08-01), None
patent: 2002-051549 (2002-02-01), None

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