Control of freely-oscillating converter switch of power supply unit, takes place during different operating states when given degrees of primary coil magnetization are reached

摘要

During a first operational state of the power supply unit and during a control period, the switching component is turned on. This takes place at the earliest, when during a free transformer oscillation, a given state of magnetization of the primary coil is reached for the second time. The switching component is turned on during a second operational state, during a control period when the given magnetization state of the primary coil is reached for the first time. An independent claim is included for the corresponding power supply unit.