Power supply control circuit, electronic device, and...

Details Power supply control circuit, electronic device, and... Power supply control circuit, electronic device, and...

2007-05-08

2007-05-08

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

Reexamination Certificate

active

11529230

ABSTRACT:
A power supply control circuit for controlling a power supply circuit having a DC/DC converter is provided. A discharge circuit operates based on a discharge instruction signal for instructing discharge and uses a switching element to remove charges of a capacitor connected to an output terminal of the DC/DC converter. An overvoltage detecting circuit outputs a detection signal when a potential at the output terminal of the DC/DC converter exceeds a predetermined potential. A level conversion circuit outputs a signal obtained by converting a potential applied to the switching element of the discharge circuit. A logic circuit performs a logic operation between an inverted signal of a start-up signal, the detection signal, and the signal obtained by converting the potential, and outputs a failure detection signal representing a failed state of the power supply circuit.

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patent: 6201375 (2001-03-01), Larson et al.
patent: 6831449 (2004-12-01), Nishida et al.
patent: 6987379 (2006-01-01), Peron
patent: 2005/0135132 (2005-06-01), Masuda
patent: 05-204496 (1993-08-01), None
patent: 2000-188829 (2000-07-01), None

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