Loading patent…
AssigneeEfficient Power Conversion Corporation
InventorsEdward Lee, Ravi Ananth, Michael Chapman, Michael A. de Rooij, David C. Tam
Estimating the term…
A gate driver circuit which integrates a synchronous bootstrap circuit in an isolation well of an integrated circuit, such that the synchronous bootstrap capacitor connected to the synchronous bootstrap circuit (and to the corresponding switch node of a power converter) can float with the corresponding switch node. Due to this feature, the voltage on one synchronous bootstrapping capacitor can be used to charge the synchronous bootstrapping capacitor of another (higher level) synchronous bootstrap circuit in a separate isolation well connected to a different switch node. As a result, the supply voltages for the synchronous bootstrap circuits in different isolation wells can all be supplied from a single ground referenced supply Vdd.
A gate driver integrated circuit, comprising a synchronous bootstrap circuit, the synchronous bootstrap circuit including a synchronous bootstrap gate driver and a synchronous bootstrap FET driven by the synchronous bootstrap gate driver, wherein synchronous bootstrap FET is configured to charge a synchronous bootstrap capacitor connected to the synchronous bootstrap circuit, and wherein the synchronous bootstrap circuit is integrated in an isolation well of the gate driver integrated circuit, such that the synchronous bootstrap capacitor can float with a corresponding switch node of a power converter.
Dependencies are inferred from the claim text.