Power converter stage, controller, and method for providing power to controller

Abstract

The invention relates to a power converter stage () for providing power supply to a power converter controller (), a power converter controller () for such power converter stage (), a power converter () including such power converter stage () and such power converter controller (), a method for providing power to a controller () of a power converter () and a software product for controlling a power converter (). In order to provide for auxiliary power supply for control circuitry of a power converter () during all operation modes of the power converter () while avoiding additional costs involved with providing a dedicated control power supply fed from bus voltage, it is proposed that power stored in power storing means () included in a power converter stage () or more generally in a power converter () are used for supply to the controller () even if the power converter is in stand-by mode, as a transfer of power between such power storing means () through a primary inductance () may be used for providing also for a power transfer to a secondary inductance (), which then supplies the controller ().