Patent ID: 6898091
Filing Date: 2005-05-24
Classification: H02M,Y02B

Abstract:
1. A circuit arrangement comprising a regulating circuit ( 8 ) which is used for generating a pulse-width modulated regulation signal ( 20 ) in dependence on two measuring signals (Va, Vb) present on inputs of the regulating circuit ( 8 ) and comprising a comparator circuit ( 212 ) for comparing the duty cycle (δ) of the regulation signal ( 20 ) with a predefinable maximum duty cycle value (δmax) and a predefinable minimum duty cycle value (δmin), said predefinable maximum and minimum duty cycle values (δmax and δmin) being input to said comparator circuit ( 212 ), wherein if the duty cycle (δ) is outside the range between the maximum duty cycle value (δmax) and the minimum duty cycle value (δmin) the circuit arrangement produces control information that corresponds to this exceeding of the range.