Abstract: A circuit arrangement for switched mode power conversion is disclosed, which circuit arrangement comprises at least an input for receiving an input voltage from a power supply, an output to provide an output voltage to a load, an energy storage device; a plurality of controllable switching devices; a first controllable voltage source, configured to provide a first control voltage to one or more of the plurality of controllable switching devices, and at least a second controllable voltage source, configured to provide a second control voltage to one or more of the plurality of controllable switching devices. To improve the efficiency of the circuit arrangement, the first and the second controllable voltage sources are configured to allow independent control of the first and second control voltages.