• State TI Thinks Resolved
  • Locked Locked
  • Replies 6 replies
  • Answers 3 answers
  • Subscribers 64 subscribers
  • Views 581 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC21521: Gate driver reommendation

James Zhan
Expert 4365 points
Part Number: UCC21521
Other Parts Discussed in Thread: UCC5350, UCC21530

Hi team,

what's the best option for driving three FF600R12ME4, is it UCC21521 or UCC5350?

Thanks.

Infineon-FF600R12ME4-DS-v02_02-en_cn.pdf

  • 0
    TI__Intellectual 2805 points

    Hello James, 

    I am an applications engineer that works with these products and I will help you with your question.How are you planning on driving the three FF600R12ME4s with 3 UCC21521s vs 6 UCC5350s?  

    Can you describe the application?

    Also, what are the working voltages that the IGBT+gate driver will need to withstand? 

    This will help me to better recommend the UCC21521 or the UCC5350. 

    regards,
    Mateo

  • 0 in reply to Mateo Begue
    TI__Expert 4365 points

    Hi Mateo,

    As you could see the attached datasheet, the Ice=600A, Vce=1200V. Customer will have 3 FF600R12ME4s for three-phase bridge for inverter application.
    What's your recommendation? UCC21521 or UCC5350？
    Or do you have a better suggestion for this?
    Thanks.


    James

  • 0 in reply to James Zhan
    TI__Intellectual 2805 points
    Hi James,

    Both UCC21521 or UCC5350 are suitable for this application. The choice between the two is up to your customer. Do they want an optimized layout for performance and have single-channel gate drivers as close as possible to each IGBT? Are they worried about high-dV/dts across the IGBTs which might induce Miller turn-on?Then UCC5350M(with Miller Clamp) is the way to go.
    or
    Does your customer care more about cost? 3xUCC21521 will be cheaper than 6xUCC5350. The UCCC21521 also has features such as dead-time control and enable while the UCC5350M has the Miller clamp feature and relies on the controller for dead-time control.

    In conclusion, both devices will work. It will depend largely on your customer's preferences. Also, check out this 3-phase inverter TI-design that may help you and your customer: www.ti.com/.../TIDA-00366

    If this answered your question, please press the green resolved button.

    regards,
    Mateo
  • 0 in reply to James Zhan
    TI__Mastermind 33430 points

    Hi James,

    I wanted to add two more things:

    • The IGBT module you linked has 4.4µC of gate charge per transistor and suggests ±15V gate drive voltage. There will be significant power dissipation in the gate drive loop with this IGBT module. Since UCC21521 and other dual-channel gate drivers integrate two drivers in the same package, the power dissipation rating must be split between the two drivers, and so larger gate drive resistors are needed to limit the dissipated power in the drivers. UCC5350 and other single-channel drivers are rated to dissipate about the same total power, but that dissipation may be in only one channel. So single-channel drivers can typically use smaller gate resistors and the turn-on or turn-off speed can be faster for the same output current. The tradeoff is that it will be more expensive to use 6x UCC5350 than 3x UCC21521.
    • The customer may be interested in using UCC21530 instead of UCC21521. UCC21530 is P2P compatible and has the same featureset with UCC21521 (enable, dead time, 12V UVLO). The only difference is that UCC21530 removes pins 12 and 13 (the pins between the output channels) to maximize the creepage and clearance distance between the two outputs. This is helpful for designs with a high DC bus voltage.

    Regards,

  • 0 in reply to Derek Payne
    TI__Expert 4365 points

    Hi Derek,

    Thanks for you advice.

    Do you have schedule for the RTM date of UCC21530?

    James

  • 0 in reply to James Zhan
    TI__Mastermind 33430 points

    Hi James,

    We're currently targeting mid-April release for UCC21530.

    Regards,