Patent ID: 7141958

Claim:
An integrated circuit power supply for providing a direct current (DC) source voltage, comprising: a source voltage supply unit to supply said DC source voltage; a power supply control device coupled to the source voltage supply unit comprising a a source voltage controller to control said high voltage side switch and said low voltage side switch when an interrupt of a supply of said DC source voltage occurs, a discharge path circuit coupled to the source voltage controller and a switching node terminal of the power supply control device and a timing controller coupled to the source voltage controller and the discharge path circuit, wherein the timing controller is coupled to the discharge path circuit through an inverter driving a discharge path disable signal from the timing controller to the discharge path circuit; an output capacitor coupled to an output node of the integrated circuit power supply and a ground terminal; and an output voltage coil coupled to the power supply control device and to the source voltage supply unit at a first terminal and to the output capacitor and the integrated circuit power supply output node at a second terminal.