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bq25570: energy harvesting

Md Naim Ahmmed
Prodigy 30 points
Part Number: BQ25570
Other Parts Discussed in Thread: BQ25505, BQ25504

I am working on self powered sensors. I have energy harvesting module for the power, but the voltage level is very low, in the range of 50-500mV. I am looking for an IC which will be able to convert this low and variable input voltage to a constant regulated voltage in the range of 2-5V. Kindly let me know if you have any suggestion for the same.

  • 0
    TI__Intellectual 2050 points
    Hello!

    There are three devices you should take a look at; BQ25504, BQ25505, and BQ25570.

    They are very similar devices.

    Each device requires around 400mV to initially start up and begin charging. Once charging has been intiated, the IC will be capable of boosting input voltages as low as 100mV.

    The outut voltage is programmed using external resistors. Your output voltage range can be met.

    Take a look and let me know if you have any questions!

    Regards,

    Joe