Method for actuating a switch in a transformer stage of a multiphase DC voltage transformer, and the multiphase DC voltage transformer

摘要

A method is provided for actuating a switch (SW; T1) regulating the current uptake in one of at least two parallel switch transformer stages (3, 3_1, 3_n) of a multiphase DC voltage transformer, which has an output terminal for connecting a load and producing an output voltage (Vout) from an input voltage (Vin), wherein the method comprises the following steps:providing a first control signal (S1), dependent on the output voltage (Vout),providing a current metering signal (S4) at least temporarily dependent on an output current (Iout) of the transformer stage (3),providing a clocked actuation signal (S3) having a sequence of actuation pulses for the at least one switch (SW; T1), whose duty cycle is controlled to a value depending on the first control signal (S1) and the current metering signal (S4), at which the mean value of the output current (Iout) is proportional to the first control signal (S1).