Patent ID: 6784649
Filing Date: 2004-08-31
Classification: H02M

Abstract:
A switching controller, comprising:a final controlling element; a pulse-duration or pulse-frequency modulator coupled to the final controlling element, the pulse-duration or pulse-frequency modulator controlling the final controlling element; an error signal amplifier coupled to the pulse-duration or pulse-frequency modulator, the error signal amplifier exhibiting P action and acting on the pulse-duration or pulse-frequency modulator; an evaluation circuit to detect a load performance of the switching controller, the evaluation circuit configured to detect only an alternating component of a load-step dependent signal of the switching controller, a time constant of the evaluation circuit being set so that the error signal amplifier compensates for a decaying control deviation of the signal detected by the evaluation circuit, the signal detected by the evaluation circuit being provided as a pre-control signal for the pulse-duration or pulse-frequency modulator; and a coupling device for the signal detected by the evaluation circuit, the coupling device provided between an output of the error signal amplifier and an input of the pulse-duration or pulse-frequency modulator.