A High Voltage Self-Biased Integrated DC-DC Buck Converter With Fully Analog MPPT Algorithm for Electrostatic Energy Harvesters

作者：Stanzione Stefano^*; van Liempd Chris; van Schaijk Rob; Naito Yasuyuki; Yazicioglu Firat; Van Hoof Chris

来源：IEEE Journal of Solid-State Circuits, 2013, 48(12): 3002-3010.

DOI：10.1109/JSSC.2013.2283152

• DC-DC converter
• high voltage
• MPPT algorithm
• ultra-low power

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 mu m 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.

• 出版日期2013-12