Patent ID: 6191567
Filing Date: 2001-02-20
Classification: H02M

Abstract:
A converter for converting an input voltage (U.sub.i) into an output voltage (U.sub.0), having a switch (S.sub.1 -S.sub.4) for controlling the converter under control of a binary signal (BS) by means of adaptation of the duty cycle of the binary signal (BS) so as to obtain a desired value of the output voltage (U.sub.0), which converter has at least two conversion modes and which converter in its operation condition is in one of at the least two conversion modes, and selection means (SLMNS) for the selection of one of the at least two conversion modes, characterized in that the selection means (SLMNS) include detection means (DMNS) for the detection of the duty cycle of the binary signal (BS), and comparison means (CMPMNS) for comparing the duty cycle of the binary signal (BS) with a reference duty cycle (RFDCCL) and for supplying a mode control signal (MDCNTRL) in response to the comparison in order to change over from one of the at least two conversion modes to another one of the at least two conversion modes.