Energy harvesting is the use of ambient energy to power small electronic or electrical devices. The energy that is all around us, ready to be accumulated and stored for later use, is found in the form of thermal, light (solar), RF, and mechanical energy. Energy harvesting is an ideal substitute for batteries, where they are impractical or expensive and hazardous to replace.
Typical harvestable energy levels are:
|up to 100 µW / cm²|
up to 100 mW / cm²
|4 µW / cm³|
800 µW / cm³
|Thermal Energy||Human |
|25 µW / cm²|
up to 1mW / cm²
|RF Waves||Antenna||1 µW / cm²|
An energy harvesting application does not provide power on demand! Energy needs to be stored and the duty cycle of the application needs to be adjusted. More energy has to be harvested than the application would ever need!
Therefore, any energy storage solution needs a high number of charge / discharge cycles and a low self discharge rate. This can be achieved with specialized batteries or SuperCapacitors.
Arrow´s Linecard provides the right selection of suppliers for this demanding application.
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DCDC + Battery Management
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News & Events
26.08.2014 - Analog Devices: 16-Bit, Isolated Sigma-Delta Modulator - AD7403
The AD7403 is a high performance, second-order, Σ-Δ modulator that converts an analog input signal into a high speed, single-bit data stream, with on-chip digital isolation based on Analog Devices, Inc., iCoupler® technology.
26.08.2014 - Infineon: 100 V OptiMOS™ Worlds Lowest On State Resistance
100 V OptiMOS™: Highest Power Density and System Efficiency
26.08.2014 - Molex: CLIK-Mate™ 1.50 mm Pitch Single and Dual Row Wire-to-Board System
CLIK-Mate™ 1.5 wire-to-board system offers a wide variety of mechanical and electrical options along with robust features and a positive lock to meet both signal and power needs including the new bottom entry PCB receptacles.
26.08.2014 - NXP: Complete Passive Solution for NFC Interaction with Electronic Devices
NFC for embedded applications. Your critical link for the Internet of Things.
08.08.2014 - Analog Devices: 16-Bit Precision, Low Power Meter on a Chip with Cortex-M3 - ADuCM350
The ADuCM350 is a complete, coin cell powered, high precision, meter-on-chip for portable device applications such as point-of-care diagnostics and body-worn devices for monitoring vital signs.
Infinite Power Solutions - IPS-EVAL-EH01
The IPS-EVAL-EH-01 MEC/Energy Harvesting Evaluation Kit is ideal for developing and evaluating various energy harvesting solutions for self-powered applications. This kit incorporates a THINERGY® MEC201-7S (0.7 mAh capacity) device, the MAX17710 Energy Harvesting Power Management IC (PMIC) from Maxim Integrated Products, and an amorphous silicon solar panel from Sanyo/Amorton. This kit will also connect to any external (user provided) energy harvester up to 150 mW.
Energy Harvesting Products
Linear Technology - LTC4071
The LTC4071 allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. A near-zero current low battery latching disconnect function protects even the lowest capacity batteries from deep discharge and potentially irreparable damage. The 550nA to 50mA operating current makes charging possible from previously unusable sources. With its low operating current the LTC4071 is well suited to charge low capacity Li-Ion or thin film batteries in energy harvesting applications. The unique architecture of the LTC4071 allows for an extremely simple battery charger solution, requiring just one external resistor.
The LTC4071 offers a pin selectable float voltage with ±1% accuracy. The integrated thermal battery qualifier extends battery lifetime and improves reliability by automatically reducing the battery float voltage at NTC thermistor temperatures above 40°C. The LTC4071 also provides two pin selectable low battery disconnect levels and a high battery status output. The device is offered in two thermally enhanced packages, a compact low profile (0.75mm) 8-lead (2mm × 3mm) DFN and an 8-lead MSOP package.
Texas Instruments - BQ25504
The bq25504 is the first of a new family of intelligent integrated energy harvesting Nano-Power management solutions that are well suited for meeting the special needs of ultra low power applications. The product is specifically designed to efficiently acquire and manage the microwatts (µW) to miliwatts (mW) of power generated from a variety of DC sources like photovoltaic (solar) or thermal electric generators.
The bq25504 is the first device of its kind to implement a highly efficient boost converter/charger targeted toward products and systems, such as wireless sensor networks (WSN) which have stringent power and operational demands. The design of the bq25504 starts with a DCDC boost converter/charger that requires only microwatts of power to begin operating.
Micropelt - TGP751
The TGP-751 / TGP-651 are packaged Micropelt thermogenerators, which offer the superior performance of Micropelt’s thin-film, solid-state generators in a standard packaging concept.
Micropelt’s thermogenerator chips offer a very high power density, with up to 100 leg pairs per mm², and a very high output voltage of up to 1.75 V per Watt of thermal input.
Infinite Power Solutions - MEC201
IPS' innovative THINERGY® Micro-Energy Cells (MECs) are revolutionary solid-state, rechargeable, energy storage solutions that serve a variety of vertical markets. These paper-thin MECs are flexible and provide unrivaled cycle life and power performance. Able to operate in temperatures ranging from -40ºC to +85ºC, these ultra-thin MECs offer extremely low self discharge rates, low cell resistance and high power-making THINERGY the industry leading micro-energy storage offering. THINERGY Micro-Energy Cells are ideally suited for use with all forms of ambient energy harvesting techniques for recharging-such as solar, thermal, RF, magnetic and vibration energy, delivering a safe, reusable and clean power source for today's electronic devices and systems.