Patent ID: 8054060
Filing Date: 2011-11-08
Classification: H02M,Y02B

Abstract:
1. An apparatus, comprising: a switched mode power supply realized by a single integrated circuit configured to produce an output voltage by switching an input voltage on and off according to a duty cycle of a signal produced by a duty cycle generator, the switched mode power supply comprising a control circuit configured to receive a control signal and control the operation of the switched mode power supply, wherein the control circuit is configured to provide a plurality of different circuit configurations for different operating environments, wherein a circuit configuration of the plurality of different circuit configurations for the control circuit is defined by the received control signal, and wherein the control circuit comprises a feed-forward control circuit, arranged at a feed-forward line of the switched mode power supply, to provide different circuit configurations for different power supply options related to a supply voltage applied to the feed-forward control circuit, and a selection of one of the circuit configurations of at least the feed-forward control circuit and an associated supply voltage mode is defined by the received control signal, and wherein the control circuit comprises a feedback control circuit arranged at a feedback loop of the switched mode power supply and the circuit configuration of at least the feedback control circuit is defined by the received control signal.