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MSP430F5529: Power supply design for MCU

Alf Kristoffer Herland
Prodigy 20 points
Part Number: MSP430F5529
Other Parts Discussed in Thread: BOOSTXL-BATPAKMKII

Hi, Im working on a design that is built around the MSP430F5529, it will be powered by a LiPo or LiOn battery at 3.7V.

I was wondering I there are any recommendations for a power supply design that don't involve any QFN, BGA or similar "no lead" components?

I tried to use WEBENCH, but it only shows me those types of packages.

When using buck-boost type of component what kind of switching frequency is ideal for the MSP?

Can you use a charge pump component or two in parallell to achieve this? I only need max 100mA Iout.

  • 0
    TI__Guru 56685 points
    Hello Alf,

    Unfortunately, I don't have a lot of answers for you here as power is not my specialty. you might be better off posting about specific power parts in their respective forums. The power requirements for MSP430 are given in the datasheet. Typically, you want a rather stable 3v (if running max frequency).

    that being said, we do have an example of LiOn battery powering an MSP430 from the Battery Fuel Tank Boosterpack BOOSTXL-BATPAKMKII . (www.ti.com/.../BOOSTXL-BATPAKMKII ) This should give you some ideas of how to implement your design. you could even proto-type this with an MSP430F5529 Launchpad.
  • 0 in reply to Jace H
    Prodigy 20 points
    Thank you for your reply Jace.
    The power supplies in both those examples have QFN type packages, not to mention the launchpads is designated ultra small. It makes it hard for prototyping, so I would prefer a SOT or SOP type component that you can inspect with a microscope.
    I will inquire further in the power section of the forum.
    Thanks.

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