A Study of the Efficiency of an LTC3108-based Circuit for Thermal Energy Harvesting
2021 IEEE 12th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON)(2021)
摘要
The harvest of thermal energy using thermoelectric generators (TEG) to power electronic circuits is getting a lot of research and industry attention due to the possibility of obtaining thermal differences in different day-to-day environments. However, the harvest of thermal energy presents some challenges such as the low level and the high variation of the generated voltage. In this scenario, a solution is the use of power management circuits and DC-DC converters. A widely used integrated circuit is the LTC3108, produced by Linear Technology, which allows harvest voltage levels about 20 mV. An Armstrong-type oscillator is interconnected to the LTC3108 input that is required for proper operation of the LTC3108 step-up process. After this, the LTC3108 performs voltage regulation and energy management to the load. This work describes a simulation-based study of the energy efficiency of the LTC3108 integrated circuit where the input block, formed by the Armstrong type oscillator, has a low efficiency that affects the performance of the whole circuit.
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关键词
thermal energy harvesting
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