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An Efficient Switched-Capacitor DC-DC Buck Converter for Self-Powered Wearable Electronics.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Oct2016, Vol. 63 Issue 10, p1557-1566. 10p. - Publication Year :
- 2016
-
Abstract
- This paper introduces an efficient reconfigurable, multiple voltage gain switched-capacitor dc-dc buck converter as part of a power management unit for wearable electronics. The proposed switched-capacitor converter has an input voltage of 0.6 V to 1.2 V generated from an energy harvesting source. The switched-capacitor converter utilizes pulse frequency modulation to generate multiple regulated output voltage levels, namely 1 V, 0.8 V, and 0.6 V based on two reconfigurable bits over a wide range of load currents from 10 \mu\textA to 800 \mu\textA. The switched-capacitor converter is designed and fabricated in 65-nm low-power CMOS technology and occupies an area of 0.493 mm2. The design utilizes a stack of MIM and MOS capacitances to optimize the circuit area and efficiency. The measured peak efficiency is 80% at a load current of 800 \mu\textA and regulated load voltage of 1 V. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 63
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 118500177
- Full Text :
- https://doi.org/10.1109/TCSI.2016.2586117