Title :
A High Voltage Self-Biased Integrated DC-DC Buck Converter With Fully Analog MPPT Algorithm for Electrostatic Energy Harvesters
Author :
Stanzione, S. ; van Liempd, C. ; van Schaijk, R. ; Naito, Yuta ; Yazicioglu, Firat ; Van Hoof, Chris
Author_Institution :
IMEC - Holst Centre, Eindhoven, Netherlands
Abstract :
This paper presents a high voltage and low power inductive DC-DC buck converter for interfacing electrostatic energy harvesters. The system, implemented in TSMC 0.25 μm BCD, can convert input voltages from 5 to 60 V to recharge the energy storage system connected to the output. The system includes also a Maximum Power Point Tracking algorithm for matching the equivalent source resistance of harvester and AC-DC converter. Due to power consumption constrains, a conventional implementation of this algorithm, based on ADC, DAC and complex digital processing is replaced by a much simpler fully analog design. Measurements have shown a peak end-to-end efficiency of 88% with 99.8% MPPT peak efficiency.
Keywords :
AC-DC power convertors; BIMOS integrated circuits; energy harvesting; energy storage; high-voltage engineering; maximum power point trackers; AC-DC converter; BCD process; Electrostatic Energy Harvesters; MPPT algorithm; MPPT peak efficiency; energy storage system; equivalent source resistance; high voltage self-biased integrated DC-DC buck converter; maximum power point tracking; size 0.25 mum; voltage 5 V to 60 V; Electrostatics; Maximum power point trackers; Oscillators; Resistance; Signal processing algorithms; Voltage control; DC-DC converter; MPPT algorithm; high voltage; ultra-low power;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2013.2283152
