Patent ID: 8531168
Filing Date: 2013-09-10
Classification: H02M

Abstract:
1. An electronic device for DC-DC conversion of an input voltage into an output voltage comprising a current mode control loop for controlling a sensed current of the DC-DC conversion by comparing a voltage level indicating a magnitude of the output current with a reference voltage level indicating the maximum admissible magnitude of the sensed current, wherein the reference voltage level is dynamically adjusted in response to a change of an input voltage level, wherein the circuitry for dynamically adjusting the reference voltage level comprises a voltage divider for providing the reference voltage level and a transistor coupled to the voltage divider and wherein the transistor is controlled so as to vary a voltage drop of the voltage divider in response to the change of the input voltage level and wherein a control gate of the transistor is coupled with a control gate of a diode-coupled transistor which is coupled in series with a current source and a resistor which is coupled to receive the input voltage level .