Daly, Crowley, Mofford & Durkee, LLP
Power management device for energy harvesting
A power management device according to example embodiments includes a self-startup circuit including an oscillator and a voltage multiplier to generate a start-up voltage in a first start-up period based on an input voltage, a boost converter to alternately charge the start-up voltage and an output voltage within a start-up voltage range during a second start-up period and to charge only the output voltage during an operation period, a controller to control the self-startup circuit and the boost converter based on a magnitude of the start-up voltage, a voltage charger including a start-up voltage capacitor and an output voltage capacitor, and a shared inductor connected between the input node and a common input node. The shared inductor operates as a part of the oscillator during the first start-up period and a part of the boost converter during the second start-up and operation periods.
Korea Advanced Institute of Science and Technology
H H H H
H02M H02M H02J H01L
inventional inventional inventional inventional
Hyun-Mo Sang-Gug Baek-Min Jeong-Il Young-Seok
Gu Lee Lim Seo Noh