Patent ID: 9425683
Filing Date: 2016-08-23
CPC Classification: H02M,Y02B

Claim Text:
1. A controller for controlling a switch of a converter, the converter configured to be coupled to a voltage supply, the controller configured to be coupled to the voltage supply and further configured to: receive a voltage signal of the voltage supply; and generate a control signal such that a duration of conducting time of the switch of the converter is longer at a higher instantaneous amplitude of the voltage signal and that the duration of the conducting time of the switch is shorter at a lower instantaneous amplitude of the voltage signal, wherein the control signal is such that the duration of the conducting time of the switch is substantially proportional to a sum of the amplitude of the voltage signal and an amplitude of another voltage signal, wherein the controller further comprises a circuit comprising: an input terminal for receiving the voltage signal, an output terminal to be coupled to a control input of the controller, and a common terminal, a transistor coupled to the common terminal, and a serial connection of at least one capacitor coupled to the common terminal, wherein the at least one capacitor is coupled to the output terminal.