ISOLATED GATE DRIVER
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United States of America Patent
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Issued Date -
Oct 24, 2024
app pub date -
Jun 29, 2022
filing date -
Jun 29, 2022
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Abstract
Described is circuitry (200) for driving a power switching device (226), the circuitry (200) comprising: a control circuit (211) in a first power domain configured to generate a first power domain PWM pulse signal (208a, 208b, 208c, 208d) in response to received PWM pulse data (207a, 207b, 207c, 207d) that encodes a PWM waveform. the first power domain PWM pulse signal (208a, 208b, 208c, 208d) being synchronous with a system clock signal (210); an isolation coupler (214, 218a, 218b, 218c, 218d) between the first power domain and a second power domain configured to generate a second power domain PWM pulse signal (209a, 209b, 209c, 209d) in response to the first power domain PWM pulse signal (208a, 208b, 208c, 208d); and a drive circuit (212) in the second power domain configured to drive the power switching device (226) with a voltage input (201, 202, 203, 225) in response to the second power domain PWM pulse signal (209a, 209b, 209c, 209d).
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