Abstract
This paper presents a DC-DC buck converter which uses a sleep control to improve the power efficiency in a few mW light load condition. The sleep control turns off analog controller building blocks to reduce the static power losses during the off-duty period of pulse width modulation. For verification, a buck converter has been implemented in a 0.18 μm CMOS process. The power efficiency has been improved from 76.7% to 82.5% with a 1.2 mW load. The maximum power efficiency is 95% with a 9 mW load.
Original language | English |
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Pages (from-to) | 842-846 |
Number of pages | 5 |
Journal | Journal of Semiconductor Technology and Science |
Volume | 16 |
Issue number | 6 |
DOIs | |
State | Published - Dec 2016 |
Keywords
- Buck converter
- CMOS integrated circuits
- Current sensor
- Sleep control