Bridge control circuit for eliminating shoot-through current
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United States of America Patent
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-
Nov 14, 2000
Grant Date -
N/A
app pub date -
May 3, 1996
filing date -
Mar 8, 1994
priority date (Note) -
In Force
status (Latency Note)
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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.
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