Voltage feedback inrush current limit circuit having increased t

Details Voltage feedback inrush current limit circuit having increased t Voltage feedback inrush current limit circuit having increased t

1999-02-18

2000-08-15

Sherry, Michael

Electricity: electrical systems and devices

Safety and protection of systems and devices

Voltage regulator protective circuits

361 58, 361 939, 361111, 323908, H02H 700

Patent

active

061045845

ABSTRACT:
The present invention provides a protection circuit for, and method of, sensing a transient condition and limiting a current, and a power supply having a filter incorporating the protection circuit or method. In one embodiment, the protection circuit includes: (1) a current-limiting component coupled between the filter and a return node, (2) a bypass switch coupled across the current-limiting component, (3) a load-current return switch series-coupled between an output of the power supply and the return node and (4) a control circuit that senses a transient condition in the power supply and controls at least one of the bypass switch and the load-current return switch.

REFERENCES:
patent: 5574632 (1996-11-01), Pansier
patent: 5619127 (1997-04-01), Warizaya
patent: 5886431 (1999-03-01), Rutigliano
patent: 5991175 (1999-11-01), Liu

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