Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/3252

Threshold voltage start-up boost converter for sub-mA applications

Authors Sze, Ngok-Man
Ki, Wing-Hung
Tsui, Chi-Ying
Issue Date 2008
Source DELTA 2008: FOURTH IEEE INTERNATIONAL SYMPOSIUM ON ELECTRONIC DESIGN, TEST AND APPLICATIONS, PROCEEDINGS , 2008, p. 338-341
Summary A threshold voltage start-up (TVS) scheme for a boost converter is presented. The TVS converter could start up at the average threshold voltage of the fabrication process, and converts a fluctuating (energy harvesting) input of 0.2V to 0.9V to a regulated output of 1.2V. It operates in discontinuous conduction mode with peak current control (and thus operates with pulse frequency modulation) to reduce switching loss at light loads. The converter was designed with an AMS 0.35 mu m CMOS process and measured 675 mu mx615 mu m. The maximum efficiency is 83% at an output current of 1 mA with an input voltage of 0.9V.
Subjects
PFM
ISBN 978-0-7695-3110-6
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Language English
Format Conference paper
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