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DRV8245-Q1: Looking for an FAE - Sine Wave Generation from 12V to 24V

James Chen
Prodigy 10 points
Part Number: DRV8245-Q1
Other Parts Discussed in Thread: DRV8262

Tool/software:

I've been requested to find a TI FAE to look into a sine wave generator that will drive a motor.

We need to make a 24V AC @ 5A steady state, 60 Hz, the output will have to adjust down to 10V AC @ 3A, I need to verify that the DRV8245 will be suitable for this operation.

  • 0
    TI__Expert 5330 points

    Hi James,

    Thanks a lot for your question.

    In order to understand the requirement can you confirm what kind of motor are you trying to drive with this.

    Thanks,

    Ibinu

  • 0 in reply to Ibinu Alaudeen Nadeera
    Prodigy 10 points

    Hi Ibinu,

    Could you reach out to my email? I really want to talk to an FAE directly, not on this forum.

    What I can tell you is that it is a piston motor, but what this needs is the waveform I mentioned. If you need specific requirements please let me know.

    Is there a simulation tool for this Hbridge?

    Thanks,

    James

  • 0
    Prodigy 10 points

    I'm waiting on an FAE contact still, and simulation tool help.

  • 0 in reply to James Chen
    TI__Mastermind 27625 points

    Hello James,

    So sorry to keep you waiting. This forum is supported by factory application engineers. We have specific rules of engagement with forum posters. One of which is, we are not allowed to reach out to forum posters via their email address. As well as we cannot provide anyone's email address in this public forum.

    You may be able to reach out to your local FAE directly via your supplier contact. Have you checked with your procurement team for an FAE contact? 

    Meanwhile I'll be happy to provide technical support for this device. From the product webpage https://www.ti.com/product/DRV8245-Q1#design-development you can access the available design tools and simulation options for this device. 

    The DRV8245-Q1 is an automotive qualified full-bridge brushed motor driver that can be controlled using PWM inputs up to 25 kHz MAX and with 0 to 100 % duty cycle, 35 V MAX operating voltage and peak short duration current rating of 32 A . The DRV8245-Q1 does not have external VREF input so it won't be a suitable option to modulate the current sinusoidally.

    There may be other options in our portfolio such as the DRV8262 dual H-bridge which can be used in parallel as a single H, can support up to 200 kHz PWM input, 65 V operating MAX voltage and 32 A peak short duration current. This driver has external VREF input which can be driven with a DAC that could output a sine function voltage using a look up table or math and modulate the PWM to drive a sine wave output current. Note the voltage across the load would be a PWM voltage modulated with sine based duty cycle and the current could be a clean sinewave based on number of sample points. Please let me know if any questions about this device. Thank you.

    Regards, Murugavel