Abstract: A power supply device including a switch arrangement including switches for generating a square wave output, a switch control arrangement for controlling the switch arrangement, a resonator tank, a rectifier circuitry for rectifying in an output from the tank, and a burst mode operation arrangement configured to facilitate a standby mode of the power supply and including a burst mode restriction arrangement for receiving and evaluating a first feedback parameter associated with a switch of the switch arrangement, the burst mode operation arrangement further receiving and evaluating a second feedback parameter indicative of the output voltage of the power supply device, and being configured to disable and enable the burst mode feature based on the evaluation of both the first feedback parameter and second feedback parameter by controlling an output from the burst mode operation arrangement.

Abstract: The invention relates to a power supply device comprising: a switch arrangement comprising switches for generating a square wave a switch control arrangement for controlling said switch arrangement, a resonator tank, a rectifier circuitry for rectifying an output from said tank, wherein said switch arrangement is arranged to operate according to an output from said switch control arrangement, wherein said resonator tank is arranged to receive said square wave output, wherein said rectifier circuitry is arranged to provide an output to a potential load, and wherein said power supply device further comprises a burst mode operation arrangement configured to facilitate a standby mode of said power supply, said burst mode operation arrangement comprising a burst mode restriction arrangement configured for receiving and evaluating a first feedback parameter associated with a switch of said switch arrangement and being indicative of the power consumption at said output to said potential load, the burst mode restrict