Active voltage drop in optimization for ldo - regulator with current control

摘要

A dc converter comprises a linear voltage regulator for the reduction or elimination of the output of the remainder of the ripple of the converter with minimal loss of efficiency. The converter includes a converter stage with a supply voltage input, a converted voltage output and a control input, a regulator stage having an input of the with the converted voltage output of the converter stage is connected, and an output, which is connected to a load, and a hunter receives information circuit with inputs for a voltage at the converted voltage output of the converter stage, a voltage at the output of the regulator stage and a load measuring current, and one output, which is connected to the control input of the converter stage is. The hunter receives information circuit controls the converter stage in such a way that the converted voltage with increasing load measuring current increases and vice versa. The output voltage of the converter is always just sufficient, in order to eliminate the residual ripple, without the pass transistor of the controller in its linear range must be operated.