UCC28950: Inquiry on Tools for Phase/Gain Margin Verification of UCC28950

Hi Jonathan,

Thank you very much for your response and for sharing the information regarding the Bode 100 Vector Network Analyzer and stability measurement methods. We understand that this is a recommended approach for evaluating the control loop on hardware.

However, our customer’s request is specifically focused on the design stage prior to hardware evaluation. They would like to know if there are any calculation-based tools (such as Excel) provided by TI that can help estimate or verify the expected phase margin and gain margin before building the prototype.

Could you kindly clarify if TI has any such design resources available for the UCC28950, or provide guidance on how to best address this requirement during the design phase?

Thanks,

Conor

Hi Jonathan,

Thank you for your reply.

By setting the constants in the UCC2895x Excel Design Tool (SLUC222) that you recently instructed me about, a Bode plot is displayed, but I'm wondering whether this corresponds to voltage mode or current mode.

Also, if there is a way to switch modes, I would appreciate it if you could let me know.

Thanks,

Conor

Hi Conor,

I will provide a response by Monday.

Regards,

Jonathan Wong

Hi Jonathan,

We look forward to your updates.

Hi Jonathan,

Do you have any update?

Thanks,

Conor