Patent ID: 7106105
Filing Date: 2006-09-12
Classification: H03F,H03K

Abstract:
1. A high voltage circuit driver, comprising: a high side driver cell, operable to drive a gate of a high side power MOSFET; a low side driver cell, operable to drive a gate of a low side power MOSFET; a bootstrap circuit, coupled between an output node and a supply-voltage terminal of the high side driver cell; a high voltage PMOS transistor, coupled between a first voltage source terminal and the bootstrap circuit, wherein the high voltage PMOS transistor is embedded in an N-isolation layer and is integrated with the driver cells, wherein the high voltage PMOS transistor is configured as a diode emulator; a bootstrap control circuit, coupled to the high voltage PMOS transistor; and a high side driver control circuit and a low side driver control circuit, coupled to the high side driver cell and the low side driver cell, respectively.