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LAUNCHXL-F28379D: Project questions

Marvn Arcangel
Genius 16195 points

Part Number: LAUNCHXL-F28379D
Other Parts Discussed in Thread: TMDSCNCD28379D

Hi Team,

I have a question from a customer regarding the use of F28379D. Please see below: 

We are using F28379D control stick for our high-power inverter (100kVA) application.
To interface this control stick with our 100kVA inverter, we have designed a board in that PWM level shifter, op-amp circuits for voltage and current sensing etc., will be there.
Some MOSFET'S got failed due to some reasons, at the same time F28739D control stick also got failed all the time.
We can't understand why the control stick got failed.

My questions are:
1. is this F28379D control stick suitable for high power applications or only design and verification purpose?
2. If it is suitable, we want to know what are the possibilities of failing of control stick or else do we need take any precautions or do we need to add any protection circuits?
3. If it is not suitable, how can we proceed with F28379D for our high power applications?

Please let me know if you need more information.

Regards,

Marvin

  • 0
    TI__Genius 12185 points

    Please use F28379D Control Card instead. We did all of our ref designs using control cards for all of our C2000 MCUs.

    None of our designs are based on Control Stick. Control sticks are not designed for high power application.

  • 0 in reply to Shamim Choudhury
    TI__Genius 16195 points

    Hi Shamim,

    Heres an update from customer

    We are using the same TMDSCNCD28379D what you suggested.. We have chosen this control card from the reference design of 10kVA bi-directional grid tie inverter. We are also developing the same product, but the power rating is different. We are designing for 100kVA Inverter. But we can't understand why the controller IC is failing.

  • 0 in reply to Marvn Arcangel
    TI__Genius 12185 points

    Pls test your hardware step by step as we did for our reference design. The software has multiple Labs that allow you to test h/w s/w step by step. Then you will find out when it is failing. The same MCU has been in many high power inverter product designs (like your 100kVA design) by many of our customers.