e-peas AEM00920 & AEM10920 Photovoltaic Energy Harvesting PMICs For RCU & KBD Applications

e-peas’ AEMx0920 PMICs come in a 4 x 4-mm QFN24 package and are optimised for replacing the batteries of remote control units or PC peripherals so that these types of products can run solely on harvested ambient light energy, with very few interfacing components. The AEM00920 and AEM10920 PMICs accept harvested energy from a single constant-voltage photovoltaic (PV) source or a light-dependent open-circuit-voltage photovoltaic source respectively.

Both devices feature an input boost converter, a buck converter with >90% efficiency to deliver energy from the storage element (LiC, Li-ion, LiPo, etc.) to the application circuit, and a 5-V direct charging circuit for backup when there is not enough ambient light energy to charge the end product. The storage element can be charged with a PV source outputting from 3 µW to 550 mW with cold start from 5 μW / 275 mV input, and the regulated output is selectable between 2.2, 2.5, or 2.8 V for your application circuit. This is configured via a GPIO interface for a maximum supply current of 135 mA.

For more detailed specifications of these devices, please consult these official datasheets for the AEM00920 and AEM10920.

e-peas produces an evaluation board (79 x 46 mm) for testing the functionality of these PMICs. The 5-V charging circuit can be accessed via a USB-C connector or screw terminal, and there are connectors for interfacing the evaluation board with your choice of PV harvester and storage element. GPIO-based configuration is done via a jumper bank.

Alternatively, e-peas also produces mini EVKs in an 18 x 16-mm form factor that enables direct integration into current designs, replacing disposable batteries with an energy-harvesting circuit that sits in the existing battery compartment.

These mini EVKs feature all the required PMIC interfacing components as well as the pins for connecting your choice of PV harvester and storage element. Overall, the mini EVKs illustrate the actual PCB footprint when designing-in e-peas’ devices while simultaneously allowing you to test the technology.

If e-peas’ PMICs look like a good fit for your next commercial project, fill out the form below, and ipXchange will facilitate evaluation of this disruptive technology.

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