Voltage supply arrangement and method for supplying voltage to an electrical load with transistor saturation control

A voltage supply arrangement for driving an electrical load, particularly a light-emitting diode, comprising a driver circuit (11) with

• a driver output (12) for making available a driver signal (SB) for controlling a load path (34) that comprises a means (36) for connecting the electrical load (37), with the driver signal (SB) controlling a load current (IL) flowing through the load path (34) and having an AC signal component, and
• a device (13) for determining the AC signal component of the driver signal (SB), the input side of which is coupled to the driver output (12) and at the output side of which can be tapped a measurement signal (SI) that is dependent on the AC signal component of the driver signal (SB), with a supply voltage (VOUT) of the load path (34) being adjustable according to said measurement signal,
• wherein the voltage supply arrangement (10) comprises a voltage regulator (28) that is implemented in the form of a DC/DC converter and delivers the supply voltage (VOUT) to the load path (34) with a ripple.