Patent ID: 7369420

Claim:
An isolated DC-to-DC converter comprising: a converter section comprising: a voltage input for receiving an input voltage; a voltage output for outputting an output voltage; a converter switch configured to turn on and off at a switching frequency to provide, at least in part, the output voltage; and a controller section coupled to the converter section, the controller section comprising: an isolation transformer providing isolation of a primary side and a secondary side; an error amplifier on the secondary side having an output connected to a terminal of the isolation transformer, the error amplifier providing an error signal that is representative of a difference between the output voltage and a desired output voltage; and an isolation driver on the secondary side coupled to an isolation driver switch, the isolation driver operable to receive a switching signal representative of the switching frequency of the converter switch, the isolation driver further configured to switch the isolation driver switch using the switching signal, the switching of the isolation driver switch resulting in the error signal being transferred across the isolation transformer to the primary side.