A compact adaptive slope compensation circuit for Current-Mode DC-DC converter

In this paper, the adaptive slope compensation circuit operating in low power consumption with a less component counts design is proposed. The sub-harmonic oscillation is a well-known problem in the Current-Mode DC-DC converters. Proposed novel adaptive slope compensation circuit solved the sub-harmonic oscillation problem. The circuit adjusts the slope compensation ramp by automatic operation according to the output voltage. The proposed circuit has implemented to the Current-Mode DC-DC converter which operates at 1.2MHz of the switching frequency. The proposed circuit used standard 0.5μm CMOS parameters for HSPICE simulation. The proposed circuit which composed of 15 components and consumes only 10μA has eliminated the sub-harmonic oscillation problem.