Bridge control circuit for eliminating shoot-through current

Details Bridge control circuit for eliminating shoot-through current Bridge control circuit for eliminating shoot-through current

1996-05-03

2000-11-14

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Utilizing three or more electrode solid-state device

327410, 327391, 327110, 326 28, 363 56, H03K 1716

Patent

active

061475459

ABSTRACT:
A bridge circuit uses active feedback to control drive phase turn on to substantially eliminate shoot-through current. Voltage sensor 66 senses H-bridge transistor voltage turn off levels and causes control circuit 64 to latch which causes enable circuit 62 to allow the next phase of H-bridge transistor turn on. A critical aspect of the invention is to ensure all H-bridge transistors are off before the enable circuit allows the next phase to turn any H-bridge transistors on.

REFERENCES:
patent: 4021684 (1977-05-01), Macey
patent: 4796145 (1989-01-01), Oshikiri
patent: 5057720 (1991-10-01), Hattori
patent: 5099138 (1992-03-01), Fukunaga
patent: 5257175 (1993-10-01), Skelton et al.
patent: 5291069 (1994-03-01), Gooding et al.
patent: 5309347 (1994-05-01), Poma et al.
patent: 5408150 (1995-04-01), Wilcox

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