Low drop-out regulators and power management integrated circuits including the same

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United States of America Patent

PATENT NO 11740644
APP PUB NO 20220300021A1
SERIAL NO

17541157

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Abstract

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A low drop-out (LDO) regulator includes a voltage-to-time converter (VTC) responsive to a reference voltage and an output voltage. The VTC generates a voltage pulse signal having: (i) a sign associated with a magnitude of the output voltage relative to a magnitude of the reference voltage, and (ii) a first pulse width proportional to a difference the output voltage and the reference voltage. A driving time-to-current converter (TIC) drives a gate node with a non-zero driving current proportional to the first pulse width of the voltage pulse signal. A slew adjusting circuit drives the gate node with a non-zero slew adjusting current, in response to the first pulse width of the voltage pulse signal being equal to or greater than reference time interval. A compensation TIC drives the output node with a non-zero compensation current having a magnitude proportional to the first pulse width of the voltage pulse signal.

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Patent Owner(s)

Patent OwnerAddress
INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYSEOUL SOUTH KEREAN SEOUL

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Choi, Byongdeok Seoul, KR 2 2
Gwon, Huidong Yongin-si, KR 3 2
Jang, Junhwan Seoul, KR 11 15
Kong, Taehwang Suwon-si, KR 12 17
Yang, Junhyeok Seoul, KR 31 131

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