An energy harvesting system with a novel rectifier charge pump

Tzu Chia Huang, Fu Ming Hsu, Chang-Po Chao*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


An energy harvesting system including a novel front-end multi-stage rectifier (AC-DC) charge pump, a power management, low-dropout voltage regulator (LDO) and a battery charger is presented in this work. The designed circuit is realized by the TSMC 0.35um CMOS process. The proposed circuit system is suitable for harvesting the low-frequency vibration energy in portable medical sensors or low-power high-frequency RFID sensors. This rectifier charge pump leverages the input AC voltage to the multiples of the original input voltage without inductances adopted. Since the strength of the external energy source is not guaranteed to be consistent, a power management is also designed for ensuring regular operation on load device. Finally, an LDO and a battery charger are designed to complete the whole system. It is shown theoretically and experimentally that the proposed rectifier charge pump performs better than the conventional multiplexer in terms of efficiency with high load current.

Original languageEnglish
Title of host publicationIEEE Sensors 2011 Conference, SENSORS 2011
Number of pages4
StatePublished - 1 Dec 2011
Event10th IEEE SENSORS Conference 2011, SENSORS 2011 - Limerick, Ireland
Duration: 28 Oct 201131 Oct 2011

Publication series

NameProceedings of IEEE Sensors


Conference10th IEEE SENSORS Conference 2011, SENSORS 2011

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