Abstract: Methods and circuits for regulating the voltage of the isolated output of an isolated buck converter. Pursuant to a representative method, a parameter of the primary side of an isolated buck transformer is measured, wherein the parameter is dependent in part upon the output voltage on the secondary side of the transformer. The duty cycle of the isolated buck converter is set based at least in part on the value of the measured parameter.

Abstract: Methods and circuits for regulating the voltage of the isolated output of an isolated buck converter. Pursuant to a representative method, a parameter of the primary side of an isolated buck transformer is measured, wherein the parameter is dependent in part upon the output voltage on the secondary side of the transformer. The duty cycle of the isolated buck converter is set based at least in part on the value of the measured parameter.

Abstract: A circuit for converting voltages is provided. The circuit includes a switch circuit coupled in series with an input node and a reference node. The switch circuit includes at least three controllable switches coupled in series and an inductive low pass output stage coupled to a connecting node between each of the switches. Each output stage is configured to output an average of the voltage generated at the connecting node. The circuit also includes a control circuit coupled to the controllable switches. The control circuit is configured to generate a plurality of control signals for control nodes of the switches, where the control signals have a plurality of complementary periodic components. Each of the complementary periodic components alternates a predetermined combination of the switches for alternating a voltage at each connecting node between a voltage at the input node and a voltage at the reference node.