Reverse current sensing regulator system and method

Details Reverse current sensing regulator system and method Reverse current sensing regulator system and method

2011-07-05

2011-07-05

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S285000

Reexamination Certificate

active

07973523

ABSTRACT:
A reverse current sensing (RCS) regulator system and method is provided. One embodiment of the invention includes a RCS regulator system. The system comprises a RCS comparator that monitors a drain voltage of a LS FET and is configured to switch states at a zero crossing point to provide an indication of the start of a reverse current condition. The system further comprises a RCS evaluator that measures a drain voltage of the LS FET upon receiving an indication that the LS FET has been turned off by the driver logic circuit and adjusts an offset to the RCS comparator to adjust the trip point of the RCS comparator relative to the drain voltage if the measured drain voltage falls outside a predetermined threshold.

REFERENCES:
patent: 6998828 (2006-02-01), Casey et al.
patent: 7652456 (2010-01-01), Hojo
patent: 7701188 (2010-04-01), Kojima
patent: 7812580 (2010-10-01), Watanabe et al.
patent: 7872461 (2011-01-01), Yamada

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