Control circuit for an in-rush current control element, and a pr

Details Control circuit for an in-rush current control element, and a pr Control circuit for an in-rush current control element, and a pr

1998-11-12

1999-11-23

Nguyen, Matthew

Electric power conversion systems

Current conversion

Including automatic or integral protection means

323908, 361101, H02H 7122, H02H 300

Patent

active

059911751

ABSTRACT:
For use with a protection circuit having an in-rush current control element that controls in-rush current into a power converter, a control circuit, a method of controlling the in-rush current control element and a power supply employing the control circuit and method are provided. In one embodiment, the control circuit includes: (1) a sensor, coupled to the in-rush current control element, that senses an in-rush current through the in-rush current control element and produces an intermediate signal and (2) a controller, coupled to the sensor and the in-rush current control element, that controls the in-rush current control element to limit the in-rush current when the intermediate signal exceeds a first reference current signal and to substantially interrupt the in-rush current when the intermediate signal exceeds a second reference current signal.

REFERENCES:
patent: 4987348 (1991-01-01), Wong
patent: 5303114 (1994-04-01), Ferry et al.
patent: 5574632 (1996-11-01), Pansier
patent: 5619127 (1997-04-01), Warizaya

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