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Design of a Monolithic Automatic Substrate/Supply Multiplexer for DVS-Enabled Adaptive Power Converters

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2 Author(s)
Chen Zheng ; Dept. of Electr. Eng., Univ. of Texas at Dallas, Richardson, TX, USA ; Dongsheng Ma

It allows the converters to seamlessly regulate the output voltage at any desired level without suffering large leakage current and latch-up. In addition, an automatic supply voltage multiplexing scheme is presented to significantly improve power efficiency and reduce chip area. The proposed ASSM circuit was fabricated with an IBM 130-nm CMOS process. Experimental results show a 4.44-mV/ns switching speed with a switching voltage ranging from 0.9 to 2.5 V. Due to an accurate voltage comparison, the tracking error in steady state is effectively minimized below 5 mV. The circuit only occupies a 0.015-mm2 silicon area, with maximum static power of 227 μW.

Published in:

Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:58 ,  Issue: 6 )

Date of Publication:

June 2011

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