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CC3100MOD: Power supply range question.

Tsvetan Mudrov
Prodigy 220 points
Part Number: CC3100MOD

I need to power the CC3100MOD from a single cell Li-Ion battery. Since the maximum power supply voltage of the module is 3.6V I need to reduce the battery voltage. What is the best way to do it in a mean of power efficiency:

1. Use an LDO to step down ot 3.6V and power the module?

or

2. Use a DC/DC converter to step down to 3.6V and power the module?

or

3. Use a DC/DC converter to step down to 2.3V and power the module?

The module has an internal DC/DC converter but there is no info about it's characteristics.

  • 0
    TI__Mastermind 28285 points
    Tsvetan,

    On our launchpads, we use the Texas Instruments TPS62162DSGR to step down USB Voltage (5 V) to 3.3V.

    For more information on what topology or part to use to accomplish a step down from 3.6V ( Iwould suggest going to 3.3V and stay away from the max voltage rating), i would suggest looking at WebBench: www.ti.com/.../overview.html

    Or posting this question on the Power Supply Forum:
    e2e.ti.com/.../


    Regarding whether to use 3.3V or use 2.3V, that would be completely dependent on your system what makes sense in your solution.


    Let me know if that helps,

    VR