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Solar energy fanatic Jasper Sikken is again with a brand new power harvesting board design, this time packing E-peas’ newest AEM10300 chip — able to gathering helpful power even indoors.
“Just lately E-peas introduced a brand new household of power harvesting PMICs with a really small PCB floor space and the AEM10300 is certainly one of them,” Sikken explains. “I bought 5 E-peas AEM10300 engineering samples. The targets was to check the brand new chip and to make a extremely configurable tiny board round it. Because the new chip did not have a voltage regulator I added a linear voltage regulator on the board (150mA and 0.5uA quiescent present). I additionally added a low move RC filter in order that the voltage regulator is turned off with a delay.”
That latter characteristic is essential: By turning the voltage regulator off with a delay, it is potential to set off a warning sign on lack of energy in order that the host gadget can safely cease writing operations earlier than working out of juice.
This compact board options E-peas’ newest power harvesting chip, appropriate for drawing energy from even synthetic mild. (📷: Jasper Sikken)
“I’ve carried out fundamental testing on the AEM10300: It charged the lithium-ion Battery to the fitting voltage, it performs MPTT [Maximum Power Point Tracking] analysis, and the ST_STO sign works as specified within the datasheet. The linear regulator additionally labored as anticipated, it supplied 220mA at 3.3V and 150mA at 2.2V. When the battery voltage drops beneath 3.5V the ST_STO goes down 0.55s earlier than the LDO was disabled, so the circuit was absolutely examined for Li-ion batteries.”
This is not Sikken’s first E-peas-driven photo voltaic harvesting venture: Earlier this 12 months he launched three compact boards constructed across the firm’s earlier power harvesting ICs, together with one designed to be used with lithium-ion capacitors — one thing he has but to check on the brand new board, however the performance of which he’s assured.
Design recordsdata for the brand new board have been printed to GitHub beneath the permissive MIT license, with extra data accessible on the venture’s Hackaday.io web page.
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