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TIDA-01634: GaN Power Solution Configuration

JH Shin
Guru 10890 points
Part Number: TIDA-01634
Other Parts Discussed in Thread: LMG1210, LM5149, LM5137, LM5148

Tool/software:

Hello,

My customer is considering using a GaN power solution and has questions about the TIDA-01634 reference design.

Q1. This reference design consists of LMG1210 (GaN Driver) + GaN HEMT. So they think it needs a separate controller. Is that correct?

Q2. Are there any controllers you recommend for the configuration below?

   - VIN : 48V

   - VOUT : 12V

   - IOUT : 10A

Q3. Are there any additional peripheral components required other than the “TIDA-01634 Solution + Controller” combination to build a GaN power solution?

Thank you.

JH

  • 0
    Guru 10890 points

    Hello,

    Are there any updates on the customer's questions ?

    Thanks,

    JH

  • 0 in reply to JH Shin
    TI__Expert 4510 points

    Hello JH,

    Apologies for the delay here, there is some missing information here, allow me to explain:

    At TI we offer multiple solutions for GaN power conversion:
    - Discrete GaN gate drivers (paired with discrete GaN FET)
    - Integrated GaN gate driver + FET 

    The gate driver will provide the drive strength needed to open and close the channel for current carrying, however the gate driver does not function as a controller which accepts feedback and outputs the required gate signal (duty cycle, FSW, etc.) to control the power conversion topology.

    TIDA-01634 appears to be an open-loop design, so a waveform generator is needed, a controller can pair with this reference design just like you asked in Q3.

    My team has experience with TIs integrated GaN FETs, however I will need to add our buck controllers team to this thread who will help recommend a controller for you.

    Thanks,
    Zach S

  • 0 in reply to Zachary Soviero
    TI__Guru 72972 points

    Hi JH,

    No need for GaN for 12V/10A – this is easily done with a single-phase design using Si FETs. Take a look at this LM5149 EVM or, for a more recent design, one phase of this LM5137 EVM. There is also a reference design with the LM5148 buck controller and GaN FETs, see here.

    Regards,

    Tim