Patent ID: 8050067

Claim:
A method for controlling conversion of an input power into an output power in a converter module, comprising: providing an input power terminal and an output power terminal; providing for the output power terminal an active switching device connected between the input power terminal and the output power terminal; and controlling a timing of switching the active switching device in each converter module, wherein the switching is controlled by sending switching control signals from a master controller to the converter module, each switching control signal containing a control message defining a switching state for the active switching devices and time relative to a time reference derived from the master controller at which the defined switching state for the active switching device is to be applied in the converter module, wherein the switching control signals are sent with a cycle time equal to, or less than, the shortest time constant of the converter module and an immediate power circuit element relating to the converter module, and wherein a duration of a control message is equal to, or less than, the cycle time.