Patent ID: 9748835
Date: 2017-08-29
CPC Classifications: H02M,Y02B

Claim:
1. A circuitry for providing a power factor correction comprising a switching element; a digital pulse width modulator, wherein an output of the digital pulse width modulator is coupled to the switching element; a control unit; and a combiner coupled to an output of the control unit to determine a combined signal based on an output of the control unit and an input signal, the combined signal being directed towards an input of the digital pulse width modulator in a forward control direction, wherein an output of the switching element provides a feedback signal for the digital pulse width modulator and for the control unit such that an error in the feedback signal is reduced, wherein the control unit comprises a proportional portion and an integrating portion, and wherein a loadsignal is determined by the control unit based on its integrating portion and wherein the loadsignal is coupled to an input of a predistortion unit, which is arranged in a path between the input signal and the combiner.