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e-peas AEM10900 Solar Energy Harvesting Charger

e-peas AEM10900 Solar Energy Harvesting Battery Charger is a fully integrated charger that extracts DC power from solar cells to store energy in a rechargeable battery. This compact battery charger operates at 250mV input voltage and 5μW typical input power. The AEM10900 battery charger features I2C mode up to fast mode plus and periodic open-circuit voltage sensing for Maximum Power Point Tracking (MPPT). This battery charger extends battery lifetime and eliminates the primary energy storage in wireless applications. Typical applications include keyboards, electronic shelf labs, remote control units, wearable electronics, and smart sensors.

Features

  • Cold start from 250mV input voltage and 5μW typical input power
  • Maximum Power Point Tracking (MTTP)
    • Matches various single/dual elements PV cells
    • Configurable MPPT ratios of 35, 50, and from 60% to 90% by 5% steps
    • Constant impedance matching
    • Configurable MPPT sensing timing and period
    • MPPT 115mV to 1.5V voltage operation range
  • Selectable over-discharge and overcharge protection in rechargeable batteries like LiC, Li-ion, LiPo, supercapacitor, and Li-ceramic pouch
  • In ultra-low power idle modes, stored energy is preserved when no source is available
  • Shipping and shelf mode
    • Prevents energy drain from the battery when no source is available (KEEP_ALIVE pin)
    • Disables storage element charging (DIS_STO_CH pin)
  • Configurable battery thermal protection
  • Easy estimation of the harvested power
  • Configuration and communication
    • Static configurations are available through configurations pins or I2C interface
    • I2C interface to set system functionalities and ready system information
    • I2C mode up to fast mode plus



Applications

  • Keyboards
  • Wearable electronics
  • Smart buildings
  • Remote control units
  • Electronics shelf labs
  • Indoor sensors

Application Circuits

Application Circuit Diagram - e-peas AEM10900 Solar Energy Harvesting Charger

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Evaluation Board

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Veröffentlichungsdatum: 2023-10-31 | Aktualisiert: 2024-10-15