Flyback converter input voltage detection

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United States of America Patent

PATENT NO 11139745
APP PUB NO 20200412267A1
SERIAL NO

16911344

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Abstract

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A flyback converter is disclosed that times a detection time for each cycle of a power switch transistor. The detection time ends when a sense resistor voltage exceeds a threshold voltage. Over a half cycle of an AC input voltage to the flyback converter measures a series of detection time and determines a minimum detection time from the series of detection times. If the minimum detection time exceeds a brownout delay, a brownout condition exists. If the minimum detection time is less than an overvoltage delay, an overvoltage condition exists.

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Patent Owner(s)

  • DIALOG SEMICONDUCTOR INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liu, Mengfei Campbell, US 12 33
Liu, Wenduo Campbell, US 19 70
Yao, Jianming Campbell, US 37 244

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