Circuit assembly and method for preparing a voltage supply for a driver stage

摘要

The arrangement has a buck converter (TS) provided for production of auxiliary voltage (V1) from direct current voltage (Vplus). A length controller (LR) is provided for generation of supply voltage (V3) for a control (CTR) i.e. microcontroller, from the auxiliary voltage. A boost converter (HS) is provided for generation of another supply voltage (V2) for a driver circuit (DR) from the auxiliary voltage or the former supply voltage for the control. The boost-converter produce the former supply voltage in dependent upon a control signal from the control. An independent claim is also included for a method for providing the supply voltage for the driver circuit.