AEM30940 – RF Energy Harvesting Power Management IC



E-peas’ RF energy harvesting IC solution – AEM30940 – is an integrated energy management subsystem that extracts DC power from ambient RF waves to simultaneously store energy in a rechargeable element and supply the system with two independent regulated voltages. This allows product designers and engineers to extend battery lifetime and ultimately get rid of the primary energy storage element in a large range of wireless applications like industrial monitoring, home automation, wearables.


Ultra-low power start-up:

  • Cold start from 380mV input voltage and 3µW input power (typical)
  • RF input power from -18.5dBm up to 10dBm (typical)

Ultra-low power boost regulator:

  • Open-circuit voltage sensing for MPPT every 0.33s
  • Configurable MPPT with 2-pin programming
  • Selectable Voc ratios of 50, 65 or 80 %
  • Input voltage operation range from 50mV to 5V
  • MPPT voltage operation range from 50mV to 5V
  • 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 output voltage

Integrated 1.8 V-4.1 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 battery is running low
  • Warns when output voltage regulators are available

Smallest footprint, smallest BOM:

  • Only seven passive external components

Optional primary battery:

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

Integrated balun for dual-cell supercapacitor


Description Version Updated Download
AEM30940 product brief PB_AEM30940_REV1.3 17/05/2018 Download
AEM30940 datasheet DS_AEM30940_REV1.2 10/09/2019 Download
Configuration tool REV1.1 21/08/2018 Download
AEM30940 RF user guide UG_AEM30940RF_REV2.0 10/09/2019 Download
AEM 30940 RF EvB Quick Start Guide QSG_EvB_30940_RF_v2.0 05/06/2019 Download