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SLYY018A Datasheet(PDF) 1 Page - Texas Instruments |
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SLYY018A Datasheet(HTML) 1 Page - Texas Instruments |
1 / 8 page Executive summary Macro-scale energy harvesting technolo- gies in the form of windmills, watermills and passive solar power systems have been around for centuries. Now, as designers seek to cut the cords, they turn to micro- energy harvesting systems that can scav- enge milliwatts from solar, vibrational, thermal and biological sources. However, understanding ultra-low power from the sourcing side brings challenges as harvested power derived from ambient sources tends to be unregulated, intermittent and small. Energy Harvesting ULP meets energy harvesting: A game-changing combination for design engineers Energy harvesting has been around for centuries in the form of windmills, watermills and pas- sive solar power systems. In recent decades, technologies such as wind turbines, hydro-elec- tric generators and solar panels have turned harvesting into a small but growing contributor to the world’s energy needs. This technology offers two significant advantages over battery-pow- ered solutions: virtually inexhaustible sources and little or no adverse environmental effects. Macro-scale harvesting technologies differ in many ways but have one thing in common: they “feed the grid,” typically adding kilowatts or megawatts to the power distribution system. As such, they are not game changers for electronic designers whose mission in life is to snip the wires – including power cords and even battery-powered systems where the perpetual device is the ultimate design goal. For this second goal, micro-energy harvesting systems are the answer. Energy harvesting’s new frontier is an array of micro-scale technologies that scavenge milliwatts from solar, vibrational, thermal and biological sources. A few years ago, micro-harvesting could have been called a scientific curiosity. But the design community’s long march to ultra-low-power (ULP) technology has had the unexpected result of pushing micro-scale energy harvesting out of the lab and onto the designer’s bench. Now, designers are sizing up ULP not just from the consumption side but from the pro- duction perspective as well. Understanding ULP from the sourcing side will be every bit as Murugavel Raju, MSP430 Systems Solutions Manager; Mark Grazier, Third-Party Program Manger, Low-Power RF; Texas Instruments WHITE P APER Ambient energy: Light, heat, motion, RF, etc. Environment: Temperature, status, position, etc. Energy Harvester Sensor(s) Energy Storage & Power Mgmt. Perpetually Powered Sensor Ultra-Low Power Microcontroller Low-Power Transceiver |
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