Ultra-Low Power Technology for Thermally-Based Energy Harvesting
This article highlights e-peas announcement of AEM20940 as power management IC for energy harvesting from thermal sources in wireless sensors application.
IC is Capable of 100mV Cold Start, with Extended Input Voltage Range
e-peas has announced the introduction of a power management IC specifically optimized for energy harvesting from thermal sources in wireless sensors application.
Supplied in a space-saving 28-pin QFN pack-age, the AEM20940 is a highly advanced device based on proprietary technology that is capable of extracting available input current up to levels of 110mA. Taking DC power from a connected thermal electric generator (TEG), it can supervise the storing of energy in a rechargeable element and simultaneously supply energy to the system via 2 different regulated voltages. This is done through its built-in low noise, high stability 1.2/1.8V and 2.5/3.3V LDO voltage regulators. The lower voltage can be employed for driving the system microcontroller, while the higher voltage is intended for the RF transceiver.
Through the AEM20940’s deployment, it will be possible to extend the system battery life or, in many cases, eliminate the primary power source from the system completely. By this any dependence on having to regularly replace batteries (which often has serious ogistical challenges associated with it, as well as adding to the overall expense) can be removed. A key characteristic of the device is its ultra-low power start-up characteristics. It can achieve a cold start (with no stored energy available) from just a 100mV input voltage and 80μW input power with an external module. Sophisticated energy management functions enable fast supercapacitor charging and warn when stored energy reserves are running low.
“Having a thermal energy harvesting solution to add to our portfolio is a significant step forward for the company, as we look to establish ourselves as the leading IC manufacturer in the rapidly maturing energy harvesting sector, offering the most complete and innovative PMIC products,” explains Geoffroy Gosset, co-founder and CEO of e-peas. “It means that our clients will be able to design IoT systems that can efficiently extract energy from their surrounding environment whatever the available sources.”
The main target applications envisaged for the AEM20940 are in industrial process monitoring, HVAC and predictive maintenance.
e-peas stands for Electronic Portable Energy Autonomous Systems.
The company was founded in 2014 on the conviction that the trillions of connected nodes of the IoT to be deployed in the next few years will require disruptive solutions to extend batteries life-time. Only two ways exist to reach this objective:
by increasing the amount of harvested energy
by drastically reducing the energy consumption of all power consuming blocs of the system.
At e-peas, we believe that new applications will ultimately be made possible by the combination of both approaches.
Relying on 15 years of research and its patented disruptive technologies, e-peas offers a portfolio of products including photovoltaic, thermoelectric, vibration, and RF harvesters interface ICs, microcontrollers and sensors solutions, all thought to be easily interfaced in order to improve system robustness and reduce your application development time.