Actuation circuit for a switch regulating the power...

Details Actuation circuit for a switch regulating the power... Actuation circuit for a switch regulating the power...

2007-11-20

2007-11-20

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S285000

Reexamination Certificate

active

11211381

ABSTRACT:
An actuation circuit for a switch element regulating the power consumption of an inductive energy storage element in a switching converter, used to convert an input voltage into an output voltage, is described. The circuit includes a pulse width modulator circuit configured so as to provide a pulse-width-modulated actuating signal for the switch element depending on a regulating signal dependent on the output voltage and a current measurement signal dependent on a current across the inductive storage element. The circuit further includes an arrangement that provides the current measurement signal, wherein the arrangement for providing the current measurement signal is a measuring and regulating arrangement, configured so as to simulate the current measurement signal from a signal dependent on the output voltage, a signal dependent on the difference between the input voltage and the output voltage, and at least a first sampled value of a signal proportional to the current across the inductive storage element during a period of the pulse-width-modulated actuating signal.

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