Session 3-4

An Ultra Fast Fixed Frequency Buck Converter with Maximum Charging Current
Control and Adaptive Delay Compensation for DVS Applications

 

Abstract

A buck converter with maximum charging current control in achieving high tracking speed is presented. An adaptive delay compensation scheme is employed to keep the switching frequency at 850kHz within 2.5% across the whole operation range. The integrated buck converter was fabricated using a 0.35um CMOS process and all functions are verified by extensive measurements.