Integrated circuit and method of digitally controling critical mode power factor correction circuit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12119742
APP PUB NO 20220294337A1
SERIAL NO

17690034

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Abstract

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An integrated circuit for digitally controlling a critical mode power factor correction (PFC) circuit according to one or more embodiments may include: an output voltage detector and a switching current detector; an A/D converter and a sample and hold circuit that perform analog-to-digital conversion of an output signal of the output voltage detector and the switching current detector; an arithmetic unit that performs calculation based on the output signal of the A/D converter and generates a pulse signal to turn on/off a switching device of the PFC circuit; a correction value calculator that calculates, based on a switching frequency of the PFC circuit, a correction value for linearly correcting the output signal of the A/D converter; and an adder that adds the correction value to the output signal of the A/D converter to correct the output signal of the A/D converter and inputs the corrected output signal to the arithmetic unit.

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Patent Owner(s)

Patent OwnerAddress
SANKEN ELECTRIC CO LTDSAITAMA PREFECTURE JAPAN SAITAMA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furukoshi, Ryuichi Niiza, JP 17 142
Ohtake, Osamu Niiza, JP 24 93

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