Patent ID: 7772810
Filing Date: 2010-08-10
Classification: H02M

Abstract:
1. A DC-DC converter circuit for converting an input voltage to an output voltage of a predetermined value based on a switching operation, said switching operation having switching operation cycles, wherein a switching operation cycle comprises at least one switching operation phase, controlled by a digital controller, said converter circuit further comprises a look-up table means in which a plurality of data is stored, wherein said digital controller uses certain data from said plurality of data with respect to an actual switched operating mode in which said converter circuit is operated for continuously adjusting a begin and an end of said at least one switching operation phase with respect to said input voltage and said output voltage, said switched operating mode being at least a first switched operating mode or a second switched operating mode, wherein the first switched operating mode is a pulse width modulation mode and the second switched operating mode is a pulse frequency modulation mode.