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light energy harvesting in IoT products.”
“The combination of Epishine’s next generation photocell technology with our power management expertise has resulted in a solution that can address extremely low levels of illumination, such as those found in indoor settings,” adds Geoffroy Gosset, CEO at e-peas. “Via this development platform, engineers can initiate prototyping for a wide array of products reliant on energy harvesting which would otherwise have been impossible using conventional hardware.”
“We chose the CAP-XX supercapacitor for our evaluation module for its amazing charge efficiency and thin profile to enable devices with small form factors,” continued Mattias Josephson, Epishine.
“The very efficient e-peas power management IC is crucial to the Epishine evaluation module for its ability to harvest very low amounts of indoor light to charge CAP-XX’s 99% charge efficient ultra-thin supercapacitor, thereby often eliminating the need for a battery,” stated Anthony Kongats, CEO at CAP-XX. “Our three companies share the mission to enable battery-free IoT and monitoring devices that will operate for many years without battery replacement, and to dramatically improve product reliability and reduce ownership costs.
Three leading actors in micro energy harvesting in joint webinar – Epishine, e-peas and CAP-XX
Friday, February 26, 2021, 2:06 pm
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When Epishine developed their evaluation kit, they tried to bring the best components on the market for a complete energy-harvesting solution. Important components are the CAP-XX ultra-thin supercap and e-peas’ energy harvesting PMIC (power management integrated circuit).
Epishine’s new evaluation kit?demonstrates how Epishine’s advanced Light Energy Harvesting (LEH) modules can be employed to power electronic hardware in low-light indoor environments (even below 50lux), to substantially increase the battery life or eliminate the need for batteries. In addition to the Epishine module with its 6 LEH photocells, each evaluation kit features an e-peas?AEM10941 PMIC, which provides intelligent charging functionality. Integrating a boost regulator plus two LDOs, the AEM10941 delivers a current to the 400mF GA230 supercapacitor provided by?CAP-XX. The PMIC also helps to regulate the output. Thanks to its ultra-low cold-start threshold, the system can quickly be activated again even when the supercapacitor has been fully discharged. All that is needed is a photocell input voltage of 380mV and just 3µW.
Epishine, CAP-XX and e-peas?will present a webinar ‘Eliminate Batteries with Indoor Light Energy Harvesting and Supercaps’ on 3rd?March at 5pm CET (4pm UK, 11am ET, 8am PT).
The compact Epishine evaluation kit (which has 81mm x 71.5mm x 3.8mm dimensions) will support output voltages ranging from 1.8V to 3.3V, adjustable to voltage increments of as little as 100mV. By discharging its CAP-XX supercapacitor, this development solution can deliver a 80mA output current, which may be used to power a radio transceiver (such as BLE, Zigbee or LoRa). It’s also possible to connect a back-up battery if required.
Epishine’s organic light cell is optimized for ambient light indoors. All electronic devices that today are powered by small batteries that last for a year or more can potentially be powered by harvesting ordinary indoor light with this innovation. The technology allows for high indoor performance and opens up new applications that would not have previously been commercially viable. Among the numerous opportunities that these evaluation kits will allow customers to explore are IoT and building automation. There is also clear potential in wearables devices and electronic shelf labels for retailers.
“We’ve been collaborating with e-peas for the last 8 months and have been impressed with the capabilities of the AEM10941 chip to support minimal currents and quick cold-start. This has meant we can extract energy from the surrounding environment, even in the lowest of light conditions,” states Mattias Josephson, co-founder and VP of Business Development at Epishine. “Furthermore, the rich feature set makes it ideal in our evaluation kit, helping to show the many ways to implement