Power controller with short-circuited protection and method of controlling the same

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United States of America Patent

PATENT NO 11632036
APP PUB NO 20220045600A1
SERIAL NO

17372089

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A power controller with short-circuit protection is disclosed to control a power switch, which is connected in series with a current-sense resistor and an inductive device between two power lines. The current-sense resistor provides a current-sense signal. The power controller includes a PWM signal generator and a short-circuit protection circuit. The PWM signal generator generates a PWM signal to the power switch to create switching cycles, each consisting of an ON time and an OFF time. The short-circuit protection circuit has a high-pass filter and a condition detector. The high-pass filter high-pass filters the current-sense signal to provide a filtered signal to the condition detector, which determines whether the filtered signal fits a predetermined condition during the ON time to generate a short-circuit protection signal and to prevent the power switch being turned on.

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Patent Owner(s)

  • ARK SEMICONDUCTOR CORP. LTD.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huang, Yu-Yun Central, HK 22 53
Shen, Yi-Lun Central, HK 32 123

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