System and method for constant transconductance based power supply detection

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United States of America Patent

PATENT NO 12105124
APP PUB NO 20240044955A1
SERIAL NO

17879477

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Abstract

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In some aspects of the present disclosure, a power detection system is disclosed. In some aspects, the power detection system includes a constant-transconductance (gm) reference generator circuit receiving a power supply voltage. In some embodiments, the constant-gm reference generator circuit includes a first current mirror to provide a first reference voltage and a second current mirror to provide a second reference voltage. In some embodiments, the constant-gm reference generator circuit includes a power detection circuit coupled to the first current mirror to receive the first reference voltage. In some embodiments, the power detection circuit is coupled to the second current mirror to receive the second reference voltage. In some embodiments, the power detection is operated to receive the power supply voltage. In some embodiments, the power detection circuit is operated to provide an output voltage having one of two logic states at least based on the second reference voltage and the power supply voltage.

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Patent Owner(s)

Patent OwnerAddress
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTDNO 8 LI-HSIN ROAD 6 HSINCHU SCIENCE PARK HSINCHU 300

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Yen-An Miaoli County, TW 41 87
Shih, Yi-Chun Taipei, TW 173 404

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