Power switch drivers with equalizers for paralleled switches
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United States of America Patent
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Jun 12, 2018
Issued Date -
N/A
app pub date -
Sep 29, 2016
filing date -
Dec 16, 2015
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Abstract
Capacitors connected between gate terminals of a plurality of parallel-connected power transistors are charged and discharged in each switching cycle to provide a plurality of power transistor control waveforms from a single gate driver waveform that equalize power losses/temperatures or steady-state currents among the plurality of power transistors. The capacitors are charged to different voltages by diverting current from one transistor driver by disabling another power transistor driver at different respective times in response to measured transient or steady state current or temperature or other operational parameter.
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