Abstract: A voltage converter includes a voltage conversion circuit having an inverter including at least one switching arm having a high-side switch and a low-side switch, a resonant tank, a rectifier and an output capacitor. A device for controlling the switches is designed to alternate a phase in which the control device opens the first of the switches and closes a second, and a phase in which the control device opens the second of the switches and closes the first, the control device being designed to provide a dead time between two consecutive phases. The voltage converter further includes a device for measuring an electrical signal of the voltage conversion circuit and the control device is designed to determine, from the measured electrical signal, a crossing instant of the resonance current and the auxiliary current and to calculate a duration of the dead time from the crossing instant.

Abstract: A method for controlling switching of an electrical system comprising having at least one frequency-controlled switch arm, includes the following steps: closing a first top or bottom switch, implementing a predetermined downtime and opening a second switch, for a period corresponding to the control frequency, and then: opening the first switch, comparing the voltage measured at the midpoint with a voltage threshold, determining a second instant t2 at which the voltage measured at the midpoint crosses the voltage threshold, closing the second switch at the second instant t2, calculating a downtime DT adjusted according to a formula which is a function of the control frequency Fsw, a first instant t1 and a second instant t2, the adjusted downtime being implemented as of the subsequent switching.

Abstract: The present invention relates to a method for controlling switching of an electrical system comprising at least one frequency-controlled switch arm, said method comprising the following steps: closing a first top or bottom switch, implementing a predetermined downtime and opening a second switch, for a period corresponding to the control frequency, and then: opening the first switch, comparing the voltage measured at the midpoint with a voltage threshold, determining a second instant t2 at which the voltage measured at the midpoint crosses the voltage threshold, closing the second switch at said second instant t2, calculating a downtime DT adjusted according to the formula: (I) wherein Fsw is the control frequency, said adjusted downtime being implemented as of the subsequent switching.