Semiconductor switching apparatus and method of controlling...

Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device

Reissue Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C327S438000, C327S582000

Reissue Patent

active

RE038734

ABSTRACT:
An inductance in a path (R1) from a gate electrode (3G) of a GTO (3) through a gate driver (4) and a node (13) to a cathode electrode (3K) is determined so that a turn-off gain may be not more than 1. At a turn-off, a main current (IA) is entirely commutated from the gate electrode (3G) towards the node (13) through the gate driver (4) in a direction reverse to a turn-off control current (IG) A peak voltage suppressing circuit (5) clamps an anode-cathode voltage (VA-K) which rises on, to a prescribed voltage value for a prescribed time. This prevents losses caused by a snubber circuit. Commutation of a main current to the gate prevents locally concentrating in the cathode side of the semiconductor switching element, to thereby increase the turn off capability of the semiconductor switching element. Further, this prevents or reduces dissipation of large amount produced by a discharge of the electric charges from a snubber capacitor. Thus, reduction in dissipation and in size of the whole apparatus can be achieved.

REFERENCES:
patent: 5237225 (1993-08-01), Gruning
patent: 5493247 (1996-02-01), Gruning
Conference Record of the 1986 IEEE Industry Applications Society Annual Meeting Part I Papers Presented at the Twenty-First Annual Meeting, Radisson Hotel, Denver, CO Sep. 28-Oct. 3, Sponsored by the IEEE Industry Applications Society.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Semiconductor switching apparatus and method of controlling... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor switching apparatus and method of controlling..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor switching apparatus and method of controlling... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3415759

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.