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UCC21520: Gate drivers and Mosftets for 1.5KW BLDC amplifier

Part Number: UCC21520
Other Parts Discussed in Thread: UCC23513

Hi 

I am designing a 20V to 180V, 1.5KW BLDC motor amplifier

Is isolated gate driver UCC21520 a good choice for such application

How to choose proper MOSFETS.

How to sense motor coil currents when high motor voltage side is isolated from digital ground. 

Is there a isolated current sense amplifier that can work with two grounds 

regards

Sub

  • Hi Sub, Thanks very much for your question. Liban in my team will help you tomorrow. 

  • Hi Sub,

    Thank you for your question and welcome to E2E. I’ve linked a reference design for an AC motor (link) that utilizes the UCC23513 isolated gate driver. Although this is for an AC motor, many considerations for FET selection and current sensing may still apply.

    For further information on BLDC motor driver considerations, please refer to the following:

    Link

    If you have any further questions, please feel free to let me know.

    Best regards,

    Liban Hussein

     

    Check out our training series on high power drivers here! These videos are great for anyone and cover everything from the basics up to design considerations for various power systems.

    Get a kick start on your design by going to the Design & Development tab in any product page!