Protection device for solid state switched power electronics

Details Protection device for solid state switched power electronics Protection device for solid state switched power electronics

Filed on

1997-10-06

Date issued

1999-11-30

Examiner

Jackson, Stephen W.

Patent Class

Electricity: electrical systems and devices

SubClass

Safety and protection of systems and devices

SubSubClass

With specific current responsive fault sensor

Other Related Categories

H02H 300

Type

Patent

Status

active

Patent number

059953497

Description

ABSTRACT:
A circuit and method of protecting the antiparallel diodes of a power bridge circuit from stress induced failures caused by the fast operation of the power switches. An auxiliary power switch is provided in parallel to the main power switch which is operable during the reverse recovery of the antiparallel diode, after which the main power switch carries the bulk of the switch current.

REFERENCES:
patent: 5307005 (1994-04-01), Ahladas
patent: 5463344 (1995-10-01), Temple

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