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e-peas AEM30330 Vibration Energy Harvesting

The AEM30330 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 AEM30330 allows to extend battery lifetime and ultimately eliminates the primary energy storage element in a large range of applications.

Thanks to its Maximum Power Point Tracking system, the AEM30330 extracts the maximum energy available from the source. It integrates an ultra-low power DCDC converter which operates with input voltages ranging from 100 mV to 4.5 V.

At start-up, user can choose between charging the storage element first to accumulate energy before the application circuit starts, or charge the load decouplinwg capacitor first to start the application circuit faster.

With its unique cold start circuit, the AEM30330 can start harvesting with an input voltage as low as 275 mV and from an input power of 3 μW. The preset protection levels determine the storage element voltages protection thresholds to avoid over-charging and over-discharging the storage element and thus avoiding damaging it. Those are set through configuration pins. Moreover, custom threshold voltages can be obtained at the expense of a few configuration resistors.

The load voltage can be selected to cover most application needs, with a maximum available load current of 60 mA.

The chip integrates all active elements for powering a typical wireless sensor. Only three capacitors and one inductor are required.

Features

  • Ultra-low power start-up, cold start from 275mV input voltage and 3µW input power (typical)
  • Very efficient energy extraction
    • Open-circuit voltage sensing for Maximum Power Point Tracking (MPPT)
    • Selectable open-circuit voltage ratios from 35% to 80% or fixed impedance
    • Programmable MPPT sensing period
    • MPPT voltage operation range from 100mV to 4.5V
  • Adaptive and smart energy management
    • DCDC switches automatically between boost, buck-boost, and buck operation, according to input and output voltages, to maximize energy transfer
    • DCDC automatically handles multiple inputs and outputs:
      • Keeps the internal supply and the load voltages regulated while storing the excess of energy in the storage element
      • The storage element can be used as an input to keep the load and internal voltages regulated when no energy is available on the source
  • Load supply voltage
    • 1.2V to 3.3V selectable load voltage range
    • Current drive capability, 30mA in low power mode and 60mA in high power mode
  • Battery protection features
    • Selectable over-charge and over-discharge protection for any type of rechargeable battery or (super-) capacitor
    • Fast super-capacitor charging
    • Dual cell super-capacitor balancing circuit
  • Small footprint and small BOM
    • Only four external components are required
    • One 10µH inductor
    • Three capacitors, one 10µF, one 22µF, and one at least 40µF

Applications

  • Asset tracking/monitoring
  • Industrial applications
  • Retail ESL/smart sensors
  • Aftermarket automotive
  • Smart home/building

Typical Application Circuit

e-peas AEM30330 Vibration Energy Harvesting

Schematic Diagram

Schematic - e-peas AEM30330 Vibration Energy Harvesting

Dimension Diagram

Mechanical Drawing - e-peas AEM30330 Vibration Energy Harvesting

Related Evaluation Board

e-peas AEM30330 Evaluation Board

Includes components required to operate the AEM30330 Integrated Circuit (IC).

Learn Moreüber e-peas AEM30330 Evaluation Board View Productsverwandt mit e-peas AEM30330 Evaluation Board
Veröffentlichungsdatum: 2023-10-04 | Aktualisiert: 2024-10-02