Patent ID: 7368897
Filing Date: 2008-05-06
Classification: H02M

Abstract:
1. An apparatus, comprising: a switching mode power converter having an input and an output, wherein the switching mode power converter is configured to transition between a continuous conduction mode at a first load level and a discontinuous conduction mode at a second load level, where the second load level is lower than the first load level; and a control circuit connected to the switching mode power converter, wherein the control circuit is configured to adjust the switching frequency of the switching mode power converter during the transition between the continuous conduction mode and the discontinuous conduction mode in accordance with maintaining low voltage deviation with respect to a reference voltage, wherein the control circuit is configured to increase the switching frequency of the switching mode power converter during the transition between the continuous conduction mode and the discontinuous conduction mode, to be higher than a steady state switching frequency during the continuous conduction mode.