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Although 2.5D IC, in which chips are connected via the interposer, can increase circuit density and performance, power dissipation and thermal effect become serious concerns for 2.5D IC design. Previous researches only focus on the power and thermal management of a single chip. Therefore, in the existing 2.5D IC design flow, the designer has no idea on the power budget of each chip. Based on this...
A voltage reference circuit providing a mean voltage of 281mV is proposed in this work. All transistors are biased in weak inversion region, and the 0.18um mix signal process is used in the simulation. This design is based on the weighted different threshold voltage between two devices, which has ultra low-power consumption of 1.5nW on 1V at room temperature. Besides, the temperature coefficient of...
This study investigates the fabrication and characterization of an energy harvesting device using the commercial 0.18 µm CMOS (complementary metal oxide semiconductor) process. Based on the thermoelectric method, the energy harvesting device converts thermal energy into electrical power. The energy harvesting device is constructed by 408 thermocouples in series, and each thermocouple is composed of...
This paper presents a flat linear generator with 11 poles and 12 winding slots for backpack energy harvesting. Analytical method based on magnetic vector potential and Finite Element Analysis (FEA) is carried out to investigate the electromagnetic characteristics. An electro-mechanical model based on the linear generator is built. It has been demonstrated that, under the walking frequency of 1.95...
This paper presents an unconventional flat-type linear permanent magnetic generator based energy harvesting system which employs a cascaded boost-buck two-stage converter, with a maximum power control algorithm optimized for low frequency human horizontal foot motion, for Li-Ion battery charging. The dynamic model of the linear generator is built and the analytical equations for maximum power generation...
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