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Technical content
© EnOcean | www.enocean.com Subject to modifications | March 2012 | Page 1/ 2 ECT 310 Perpetuum EnOcean powered by Thermal Energy ECT 3 10 is a low -cost ultra-low-voltage DC/DC converter for powe ring ba ttery-less EnOcean radio modules by Thermal Energy. Wireless sensors and even ac tuators can be operated. Operation starts at typ. 20 mV relating to a
2 Kelvin temperature difference at a sta n-
dard low-cost Peltier element. The output power is in the range from µW to mW and depends on the actual temperature diffe r- ence at the Peltier element. ECT 310 is designed and optimized for powering EnOcean radio mod- ules in sensors and actuators. To achieve best system efficiency the output voltage is reg ulated only roughly. A typical thermo -driven sensor consists of a sensor element, a small Peltier el e- ment, the ECT 310 DC/DC converter and an EnO- cean STM 300 or STM 312 radio mod ule. Other than STM 300, the STM 312 module a lready has an energy storage on board. Energy Calculation Example Output power from ECT 310 in combination with Peltier element TEC2L-15-15-15-5.6: Red = temp. diff. @ Peltier, blue = temp. diff. against ambient temp. (via heat sink). Start up at 2K, ~100 µW of energy is already produced for a temp. diff. of 7 K. An EnOcean radio module that wakes up every 2 min. to transmit a telegram needs ~5 μW on average only. Enough energy is left even to power some actuators! ECT 310 key features Best in-class Thermo Harvester solution Low-cost DC/DC converter, works with lowest-cost standard Peltier elements Designed and optimized for thermo- powered EnOcean wireless applications SMD footprint Directly to be soldered onto EnOcean STM 312 wireless sensor transmitter module Powers STM 300 module to realize bi- directional wireless sensors and actuators For evaluation of ECT 310 the development kit EDK 312 is provided: EDK 312 consists of following parts 868 MHz STM 312 all-in-one wireless sen- sor module with integrated energy storage ECT 310 ultra-low-voltage DC/DC convert- er Peltier element TEC2L-15-15-15-5.6 Adapter Board EVA 330 Detailed documentation Key Applications Sensors for Building and Industrial automation and Medical (heat cost allocator, temperature sensor, process control, preventive mainte- nance, etc.) Actuators for Building and Industrial automa- tion (water valve, air flap, other mech. dev.)
© EnOcean | www.enocean.com Subject to modifications | March 2012 | Page 2/ 2 Thermo powered STM 312 radio sensor Thermo powered actuator with STM 300 Dimensions & Pinout (Top View) Technical Data Input start-up voltage 20 mV typ. oc Input voltage max. 500 mV oc (oc = open circuit) Output voltage 3 .. 5 V (input = 20 .. 500 mV, load < 10 MΩ) Input source impedance < 2 Ohm Efficiency @ 25 mV 30 % typ. Operating temperature -20 °C .. +60 °C Storage temperature -40 °C .. +85 °C Humidity 0 .. 93 % rH, non-condensing Packaging Information
Ordering Information
EnOcean GmbH owns multiple patents in the area of self-powered applications. An overview can be fo und at following link: http://www.enocean.com/en/patents/ . Patent pending for ECT 310. Purchase of the ECT 310 DC/DC converter module or ECT 310 developer kit does not give the right to use this component to power any radio interface other than the EnOcean Radio protocol. Type ECT 310 Module EDK 312 Dev Kit