Electric power converter controlling method for driving LEDs in e.g. lighting fixture, involves determining desired average power of electrical power converter, and closing electronic circuit element during set of sub intervals

摘要

The method involves determining a desired average power of an electrical power converter (1), and dividing a time interval into a set of sub intervals. A quantity of power proportional to a fraction of another set of sub intervals is determined. An electronic circuit element of the electrical power converter is closed during the former set of sub intervals, and electronic circuit element is kept open during the latter set of sub intervals. An independent claim is also included for an electrical power converter comprising an electric power supply.