Patent ID: 7138790
Filing Date: 2006-11-21
Classification: H02M

Abstract:
1. A control device for controlling a charging switch in a switching regulator with a network of inductance, filter capacitance and diode, wherein an output voltage regulated by controlling the charging switch can be output at the filter capacitance between a first output node and a second output node of the switching regulator, wherein the switching regulator further comprises a first input node and a second input node, wherein the charging switch and the network are connected in series between the first input node and the second input node, and wherein the node, to which the charging switch with the network is coupled, is short-circuited to an output node, comprising: a clock generator for providing an operating clock; a detector for detecting the output voltage between the first output node and the second output node of the switching regulator to generate an output voltage detection signal; a detector for detecting a current through the inductance to obtain a current detection signal, wherein the detector for detecting the output voltage or the detector for detecting the current is formed by the inductance to generate the detection signal such that the same has a time curve inverted in relation to a time curve of an amount to be detected, so that the detection signal falls with a rising signal to be detected and vice versa, a comparator for comparing the current detection signal and the voltage detection signal to determine whether a predetermined relation exists between the current detection signal and the voltage detection signal; and a controller for controlling the charging switch with a control signal, wherein the controller is formed