A voltage converter comprising a voltage input, a transformer comprising a primary winding coupled with the voltage input, a main switch coupled at a node with the primary winding, a snubber circuit coupled with the voltage input and with the node, the snubber circuit comprising a controllable switch having a gate and a source. A control circuit is coupled with the main switch and configured to turn the main switch on and off to convert an input voltage supplied to the voltage input to an output voltage distinct from the input voltage. The gate is coupled with the source to prevent the controllable switch from turning on.