AEM40940 Radio Frequency Energy Harvesting Power Management IC

AEM40940 RF Energy Harvesting

E-peas’ RF energy harvesting IC solution – AEM40940 – is an integrated energy management circuit that extracts DC power from an ambient energy harvesting source to simultaneously supply an application and store energy in a storage element. The radio frequency energy harvester AEM40940 allows to extend battery lifetime and ultimately eliminates the primary energy storage element in a large range of wireless applications, such as industrial monitoring, geolocation, home automation, e- health monitoring and wireless sensor nodes.

Ultra-low-power start-up:

RF input power from -19.5 dBm up to 10 dBm (typical)

Ultra-low-power boost regulator:

Open-circuit voltage sensing for Maximum Power Point Tracking (MPPT) every 0.33 s
Configurable MPPT with 2-pin programming
Selectable Voc ratios 60, 65 or 70%
Input voltage operation range from 50 mV to 2.5 V
MPPT voltage operation range from 50 mV to 2.5 V
Constant impedance Matching (ZMPPT)

Integrated 1.2/1.8 V LDO regulator

Up to 20 mA load current
Power gated dynamically by external control
Selectable or adjustable output voltage

Integrated 1.8 V-3.3 V LDO regulator

Up to 80 mA load current with 300 mV drop-out
Power gated dynamically by external control
Selectable or adjustable output voltage

Flexible energy storage management

Selectable overcharge and overdischarge protection
For any type of rechargeable battery or (super)capacitor
Fast supercapacitor charging
Warns the load when the battery is running low
Warns when output voltage regulators are available

Smallest footprint, smallest BOM:

Only seven passive external components are required

Optional primary battery:

Automatically switches to the primary the battery when the secondary battery is exhausted

Description
AEM40940 Datasheet	Download
AEM40940 Product Brief	Download

AEM40940 RF Energy Harvesting

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