Patent ID: 7511463
Filing Date: 2009-03-31
Classification: H02M

Abstract:
1. An apparatus, comprising: a converter circuit having N+1 switch circuits, the converter circuit being configured to receive an input voltage and to provide N output voltages, where N is two or more; and a control circuit to selectively provide control signals to the N+1 switch circuits at time intervals in accordance with the N output voltages, wherein the converter circuit comprises: a first switch circuit, a second switch circuit, and a third switch circuit coupled in series between the input voltage and ground potential; a first LC circuit coupled to a junction of the first and second switch circuits, the first LC circuit configured to provide a first output voltage; and a second LC circuit coupled to a junction of the second and third switch circuits, the second LC circuit configured to provide a second output voltage, different from the first output voltage, and wherein in a power save mode, the control circuit switches the second switch and the third switch simultaneously to function as a single cascaded switch.