SUPPLY CIRCUIT AND METHOD FOR SUPPLYING AN ELECTRICAL LOAD

The invention relates to a supply circuit for an electrical load (200), said supply circuit comprising a converter circuit (140) for generating a supply signal (I, U) for the electrical load (200) by switching between different states of the converter circuit (140). The supply circuit (100) also comprises a control circuit for controlling a supply power of the electrical load (200) by means of pulse modulation of the supply signal (I, U). The control circuit (150) comprises a sigma-delta modulator (160). In accordance with an input signal (DL) which specifies a target value for the power supply, the sigma-delta modulator (160) generates a pulse sequence signal (PM) in order to control the pulse modulation of the supply signal (I, U).