Patent ID: 7265523

Claim:
A regulation loop for a switching power converter of the type having a pulse width variable or pulse frequency variable modulator operating switches associated with a power source and a bridge filter section, with a power output node feeding a load, the variable parameter of the modulator establishing an amount of regulation and efficiency of the power converter, the improvement comprising: a comparator having a high impedance first input sampling a voltage or current from the power output node of the switching power converter as a first input signal and having a second input signal from a reference supply representing a target voltage or current level for the load, the comparator having an output signal on an output line with a high or low signal depending on whether first input signal exceeds the second input signal or not; a charge pump connected to receive the output signal from the comparator and either source or sink current in response thereto as a current signal; and a filter connected to the comparator receiving the current signal and delivering a filter output signal operating a pulse width variable or pulse frequency variable modulator.