Pre-driven bootstrapping drivers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12206391
APP PUB NO 20230188127A1
SERIAL NO

18062756

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Abstract

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A bootstrapping gate driver circuit in which the size of the bootstrap capacitors is reduced. The gate-to-source voltage of the high side (pull-up) FET is pre-driven to an initial voltage (pre-driven voltage) before the bootstrap capacitor releases charge to charge up the gate-to-source voltage of the high side FET. This pre-driven voltage is applied through a pre-driven FET that allows current flow from the supply voltage to charge the gate of the high side FET to the pre-driven voltage. The pre-driven FET is turned on by a turn-on signal that occurs before the bootstrap capacitor releases charge. The pre-driven period (and hence, the pre-driven voltage) is determined from the time that the pre-driven FET begins to turn on, to the time that the bootstrap capacitor starts to release charge.

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Patent Owner(s)

Patent OwnerAddress
EFFICIENT POWER CONVERSION CORPORATION909 N PACIFIC COAST HIGHWAY SUITE 230 EL SEGUNDO CA 90245

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ananth, Ravi Laguna Niguel, US 15 22
Chapman, Michael Long Beach, US 40 319
Lee, Edward Fullerton, US 162 1445

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