Nxp B.v.

William Donaldson

Edmond Toy

A switch control circuit () and method are provided for transistor-implemented switches () of an integrated floating power transfer device (). The device includes a floating bus () driven by a power system which includes a charge pump circuit (). At least one switch circuit () is coupled to the floating bus and the power system for facilitating charging of the floating bus. The switch control circuit () includes a level shifting circuit () for adjusting a control signal to the at least one switch circuit notwithstanding floating of an input voltage signal thereto to facilitate operation of the switch circuit.

Integrated floating power transfer device with logic level control and method

A protection circuit and method are provided for a floating power transfer device having one or more switches for controlling charging of a reservoir capacitor across which a load is applied when in use. The protection circuit includes a control circuit, a fault detection circuit and a precharge driver circuit. The control circuit at least partially controls switching of the at least one switch, while the fault detection circuit detects when a fault in the floating power transfer device or the load occurs and sends a fault detect signal to the control circuit in response thereto. The precharge driver circuit, which is enabled by the control circuit responsive to receipt of the fault detect signal, attempts to precharge the reservoir capacitor to a voltage level sufficient for switching of the one or more switches to proceed without damaging the switches.

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Sunnyvale, CA, United States of America

William Donaldson