ELECTRONIC DEVICE FOR WIRELESSLY TRANSMITTING POWER COMPRISING PHASE DETECTOR AND OPERATION METHOD THEREOF

WIPO Patent Application WO/2023/234548

A1

An electronic device for wirelessly transmitting power may comprise: an amplifier; a load unit that receives a signal output from the amplifier; a phase detector that detects the phase difference between the current and voltage output from the amplifier; and a resonant circuit disposed between the amplifier and the load unit and including an inductor and a variable capacitor of which the capacitance value is adjusted on the basis of a DC voltage output from the phase detector. The phase detector comprises: a phase difference generation circuit that outputs a signal indicating the phase difference between the current and the voltage; a charge pump that uses a transistor to increase or decrease a drain voltage and outputs same; a reference voltage generation circuit that adjusts, on the basis of the reference voltage, the magnitude of the voltage of a signal output from the charge pump; and a filter circuit that filters the output signal and outputs a DC voltage corresponding to the phase difference.

GU BEOMWOO (KR)
KIM SUNJU (KR)
PARK JAESEOK (KR)
YEO SUNGKU (KR)
LEE JAEYONG (KR)
JANG SEONHYE (KR)
PARK CHANGKUN (KR)

PCT/KR2023/004870

December 07, 2023

April 11, 2023

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SAMSUNG ELECTRONICS CO LTD (KR)
FOUNDATION SOONGSIL UNIV INDUSTRY COOPERATION (KR)

G01R25/04; G01R19/10; G01R23/165; H02J50/12; H03B5/12; H03F1/56; H03F3/45; H03L7/097

KR20150099854A	2015-09-01
KR20170037308A	2017-04-04
KR20130007173A	2013-01-18
KR20150093588A	2015-08-18
KR20200047061A	2020-05-07

LEE, Keon-Joo et al. (KR)

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