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Power Management Board (Type 1) Click here to see Type 2 board


The circuit board is designed to collect and manage microwatt (μW) to milliwatt (mW) power generated from various DC sources such as photovoltaic (solar) cells or thermoelectric generators. This unit implements a high efficiency boost converter/charger for products and systems with tight power and operational requirements. This DC-DC boost converter/charger requires only microwatts of power to start working


  • Ultra Low Power, High Efficiency DC-DC Boost Converter/Charger
  • Continuous energy harvesting from low voltage input supply: VIN ≥ 130mV (typical)
  • Ultra-low quiescent current: IQ < 330nA (typical)
  • Cold start voltage: VIN ≥ 330mV (typical)
  • Programmable Dynamic Maximum Power Point Tracking (MPPT).

Energy source input voltage

0.13V - 3V  (Cold start voltage is 600 mV)
It will continue energy harvesting from VIN as low as 130 mV                 

Energy storage component and Voltage

Energy can be stored to rechargeable li-ion battery, thin-film battery, super-capacitor, or conventional capacitor. Voltage range is 2.5 V - 5.25 V. By default unit is set to 3.1 V.  Please request us if you need different storage voltage.

Working environment temperature

-40 ~85 ˚

Boost mode switching frequency

up to 1MHZ

Working mode

Cold start mode, boost mode, thermal protection cut-off mode


Functional Block Diagram of Main Chip



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SPD Laboratory, Inc. Naka-ku, Johoku, 2-35-1 Hamamatsu, 432-8011, JAPAN
Tel: +81(0)53-474-7901 Fax: +81(0)53-401-7080
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