Abstract:

A squarer slope compensation technique is presented for application in the current mode DC/DC converters.The slope compensation changes dynamically with the duty ratio,improving system stability and the chip's loading capacity and eliminating such disadvantages as the instability with duty ratios larger than 50% and the sub harmonic oscillation as well as sensitive noise,The circuit is based on a 0.35 μm BCD process and verified by Cadence simulation.Anticipated results have been achieved.

Key words: peak current mode;slope compensation;loading capacity;dc/dc converter