PMIC is capable of 100mV cold start from harvested energy

February 26, 2019 // By Julien Happich
PMIC is capable of 100mV cold start from harvested energy
Supplied in a space-saving 28-pin QFN package, e-peas’ AEM20940 is a power management IC (PMIC) based on proprietary technology and 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. The chip can achieve a cold start (with no stored energy available) from 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.
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