Patent ID: 7969135
Filing Date: 2011-06-28
Classification: G05F,G06K,Y10S

Abstract:
1. A regulation circuit comprising: an error detector comprising an input for an input voltage, a further input for a reference voltage and an output for an error signal, wherein the error signal depends on the input voltage and the reference voltage; an integrator comprising an input for the error signal and an output for an integrated error signal; a voltage regulator comprising an input for the input voltage and a terminal for the integrated error signal, wherein the voltage regulator is configured to adjust a shunt current responsive to the integrated error signal such that the input voltage is adjusted towards a target voltage; and a startup module comprising an input for a rectified input voltage, a further input for a trigger signal which signals an end of a startup-mode, an output for a startup signal and a further output for a startup voltage, wherein the further output of the startup module is coupled to the output of the integrator.