Overcurrent protection system and method for inverter circuit
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Jan 24, 2017
filing date -
Jul 25, 2014
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Abstract
A overcurrent protection system includes an inductor current detection circuit configured to detect an inductor current in the inverter circuit to obtain an inductor current detection value, a pulse-by-pulse current limit enable signal generation circuit connected to the inductor current detection circuit and to the pulse-by-pulse current limit enable signal generation circuit, and configured to perform turn-off control on a switching transistor in the inverter circuit according to the pulse-by-pulse current limit enable signal, and a first instant-feeding load impact signal generation circuit connected to the pulse-by-pulse current limit enable signal generation circuit and configured to detect an inductor voltage in the inverter circuit to obtain an inductor voltage detection value, and generate an instant-feeding load impact signal in response to determining that the inductor voltage detection value reaches a preset voltage threshold.
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