Switching regulator configured to detect and shutdown...

Details Switching regulator configured to detect and shutdown... Switching regulator configured to detect and shutdown...

2011-05-03

2011-05-03

Vu, Bao Q (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S284000, C323S285000, C323S908000

Reexamination Certificate

active

07936158

ABSTRACT:
A switching regulator includes a first switch, an inductor, a second switch, a controller to control a switching operation by switching the first switch and switching the second switch complementally to the first switch, and a reverse current detector to detect a reverse current that flows from an output terminal toward the second switch. The reverse current detector generates a proportional voltage that is proportional to a voltage at a junction node between the second switch and the inductor, and detects a generation or an indication of the reverse current based on the proportional voltage. The controller turns the second switch off to create a shutdown state when the reverse current detector detects the generation or the indication of the reverse current.

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