EM microelectronic

EM8504

Power Management Controller for Dye-Sensitized (DSSC) single solar cell harvesting.

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ECO - BOOST - Maximize Harvesting Efficiency

The EM8504 is an integrated power management solution for low power applications. It is specifically designed for efficient operation with Dye-Sensitized Solar Cells (DSSC) in the µW to mW range. To optimize harvesting efficiency, the EM8504 incorporates a maximum power point tracking (MPPT) controller based on a fixed Voltage at Maximum Power Point (VMPP).

Dual energy storage management

Fast start up with empty energy storage

Ultra-low power DCDC boost

Optimized for indoor low light conditions

DSSC solar cells

Optimized for Dye-Sensitized solar cell (DSSC)

Embedded configurability

No external component needed

Features

  • Flexible operation with different energy banks
    • Primary cell battery
    • Secondary cell battery
    • Capacitors (gold-cap, super-cap)
  • Ultra-low power DCDC boost converter with very high efficiency
    • MPPT based on fixed external voltage
    • Operating mode minimum voltage VDD_HRV = 100 mV (typical)
    • Operating mode minimum power: PIN = 1µW (typical)
    • Quiescent current: IQ = 125 nA
    • Cold-start minimum voltage: VIN = 300 mV
    • Cold-start minimum power: PIN = 3 µW (typical)
  • Fast start-up on any energy storage
    • Dual energy storage elements
  • Power management control
    • Multiple independent supply outputs
    • User programmable under-voltage and over-voltage levels
  • Limited external components
    • Device configurations are stored in on-chip E2PROM
    • Dynamic configuration through a SPI or I2C interface
  • Extended power management status
    • Battery on protection mode
  • LTS/STS connection status
    • Minimum/Maximum voltage warning
    • USB connected

Technical Resources

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