B#: a battery emulator and power profiling instrument

Authors:
Pai H. Chou;Chulsung Park;Jae Park;Kien Pham;Jinfeng Liu
Affiliations:
University of California, Irvine, CA;University of California, Irvine, CA;University of California, Irvine, CA;University of California, Irvine, CA;University of California, Irvine, CA
Venue:
Proceedings of the 2003 international symposium on Low power electronics and design
Year:
2003

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Abstract

This paper describes B# (B-sharp), a programmable power supply that emulates the behavior of a battery. It measures the current load, calls a battery simulation program to compute the voltage in real time, and controls a linear regulator to mimic the voltage output of a battery. This instrument enables validation of battery-aware power-optimization techniques with accurate, controllable, reproducible results. This instrument also supports training mode with actual batteries, and it can even be used for recording and playback of a solar power source. This design has been prototyped and tested on hand-held devices with high accuracy and fast response time.