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BOOSTXL-DRV8305EVM: Simple setup: PWM from Launch Pad to BOOST outputs

Roger Munck-Fairwood
Prodigy 50 points
Part Number: BOOSTXL-DRV8305EVM
Other Parts Discussed in Thread: LAUNCHXL-F28027F, MOTORWARE

Is there a simple way to set up the BOOST module to be a 'power version' of the PWM outputs from the LAUNCHXL-F28027F?

That is, I just need (at least one) PWM output (perhaps a complementary pair) from the LAUNCH module to be reflected in (at least one of) the outputs from the BOOST module - just like implementing a high-side and low-side driver pair.

I don't need all the facilities in the MOTORWARE package, which seem very complicated to get started with.

Thanks!

Roger

  • 0
    TI__Mastermind 23045 points

    Hey Roger,

    Thanks for your question and posting to the MD forum. I am not sure if you are using this to drive a motor but yes this should be possible, unfortunately we do not have code for this but you could always write customer firmware to do something like which should be fairly simple, you would only need to drive the necessary phase with a PWM signal. There is a fairly simple code example that can be found here: https://www.ti.com/tool/TIDA-010056 but it is for MSP430. This example is good because it can show you how they are generating the PWM signals and for your application you can use only two of the cases where you drive either the high side or the low side.

    If you are not driving a motor may I ask what you are trying to do and perhaps provide better guidance.

    Best,

    Isaac