An On-Chip Multi-Mode Buck DC-DC Converter for Fine-Grain DVS on a Multi-Power Domain SoC Using a 65-nm Standard CMOS Logic Process

摘要

In this paper, we propose an on-chip dc-dc buck converter for fine-grain dynamic voltage scaling (DVS) on a multi-power domain SoC. The proposed circuit converts the I/O voltage to the required operating voltage of the voltage island. This regulator is equipped with programmable output buffer and switching signal modulator, according to the module operating condition. One particular feature is its fully asynchronous operation. The proposed converter has been designed and fabricated in a 65-nm standard CMOS logic process and occupies the area of 5 bonding pads. The maximum measured power efficiency is over 88%, and the measured leakage current in deep stand-by mode is only 19 nA.