DC-DC converter having charge pump circuit for determining operation timing

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11967889
APP PUB NO 20220321011A1
SERIAL NO

17753243

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A bootstrap circuit unit of a DC-DC converter applies, to a drive unit, a voltage that is higher than that at a first connection point between switching elements in a first conversion operation, and applies, to the drive unit, a voltage that is higher than that at a second connection point between switching elements in a second conversion operation. A charge-pump circuit unit steps up an input voltage and applies the resulting voltage to the drive unit. The drive unit sets the voltage of a first drive signal and a second drive signal according to a voltage applied by the bootstrap circuit unit or a voltage applied by the charge-pump circuit unit. The charge-pump circuit unit determines the operation timing at which the charge-pump circuit unit is to apply the output voltage, based on the first and second voltage, and the first and second power supply unit charging signals.

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Patent Owner(s)

  • AUTONETWORKS TECHNOLOGIES LTD.; SUMITOMO WIRING SYSTEMS, LTD.; SUMITOMO ELECTRIC INDUSTRIES, LTD.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aizawa, Kiyoshi Yokkaichi, JP 7 33

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