• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 65 subscribers
  • Views 81 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

Converter topology recommendation required

Vijay P Limaye
Prodigy 180 points
Other Parts Discussed in Thread: C2000WARE

Hello,

Which is the best topology recommended by you experts for the non isolated DC-DC converter:

  • Input 450V DC to 550V DC
  • Non isolated output variable from 150V DC to 350V DC, current rating 3.5A

With regards,

Vijay Limaye

  • 0
    TI__Mastermind 47715 points

    Hi,

    Based on your output power 350V x 3.5A = 1.225 kW, I would suggest to use multiphase dc-dc chopper circuit as single phase dc-dc chopper (buck converter) may have higher power losses.

    Your thread currently is oriented to HVP/HVC product line, this is not correct, since this product line is on AC-DC or isolated DC-DC.

    For non-isolated DC-DC, please specify a different product line. But since you are asking a high power, I would suggest you specify C2000 Ind to start with.

    HVP/HVC does not have a proper non-isolated dc-dc solution for your application.

  • 0 in reply to Hong Huang
    Prodigy 180 points

    Hello,

    Thank you for your help. I understand that you are suggesting to go with micro controller (C2000) based solution and there is no discrete control IC for such application. Is this right?

  • +1 in reply to Vijay P Limaye
    TI__Mastermind 47715 points

    Hi,

    As mentioned, the HVC product line is for isolated DC-DC instead of non-isolated DC-DC. This product line does not have a proper solution for your applications. You need to find if any solutions from different product lines. I suggest you start with C2000 to find if they have something like multiphase dc-dc chopper which I would think is what to fit the best.

  • 0 in reply to Hong Huang
    TI__Genius 11025 points

    We have a non-isolated DC/DC buck example in C2000 DP SDK. Pls download C2000Ware and then you will see it in the following folder:

    C:\TI\c2000\C2000Ware_DigitalPower_SDK_4_00_00_00\solutions\tidm_dc_dc_buck

    It is low voltage design. But it shows how to control any DC/DC buck digitally using C2000 MCU. So you can use the same s/w for your high voltage DC/DC.

    Only thing you need to do is change the parameters(PWM freq, dead-time, control loop parameters etc.) to meet your power stage requirements. 

    Shamim