Patent ID: 7852150

Claim:
A switching amplifier comprising at least one pulse modulator arranged for modulating at least one utility signal into at least one pulse modulated signal, at least one switching power stage arranged to establish at least one amplified utility signal on the basis of said at least one pulse modulated signal and a power signal, said power signal being delivered by a controlled power supply, and a correction signal estimator arranged to establish a correction signal, wherein said controlled power supply, correction signal estimator and at least one pulse modulator are arranged according to one of said controlled power supply being controlled at least partly on the basis of said at least one utility signal, said correction signal being established on the basis of a supply information signal derived from said controlled power supply, and said pulse modulator processing said utility signal according to said correction signal, and said at least one utility signal being established at least partly on the basis of at least one input utility signal according to a gain factor, said correction signal being established on the basis of said gain factor, and said controlled power supply being controlled at least partly on the basis of said correction signal.