Patent ID: 7893678
Filing Date: 2011-02-22
Classification: H02M,Y02B

Abstract:
1. A current-mode controlled DC/DC converter configured to receive an input voltage to supply an output voltage, the current-mode controlled DC/DC converter comprises: an inductor and a controllable switch being coupled to the inductor configured to obtain a periodically varying inductor current through the inductor; a current-mode controller configured to compare the output voltage with a reference voltage to obtain an error signal, the current-mode controller further being configured to apply a transfer function on the error signal to obtain a control signal; a correction circuit configured to add to the control signal a correction signal being representative-of a difference between an original level of the control signal and an average value of the inductor current to obtain a modified control signal; and a drive circuit configured to compare a sensed signal being representative of the inductor current with the modified control signal to switch off the controllable switch when a level of the sensed signal reaches a level of the modified control signal.