A SELF-OSCILLATING CONVERTER

摘要

The converter has a main feedback path (Vout, R4, R5) and two auxiliary feedback paths (R1, C1; R2, C2)rom an output node to an auxiliary differential input pair of a comparator. The auxiliary feedback paths have different RC time constants so that a differential ramp signal is effectively applied to the auxiliary differential inputs of the comparator. The circuit design compensates for a negligibly small equivalent series resistor of an output capacitor (Cload) so that modern capacitors may be used without compromising the stable oscillation of the converter.