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UCC28631: Vcs(max) min/max value

Hirotsugu Kobayashi
Mastermind 9540 points
Part Number: UCC28631

Hi, team.

Please tell me the min/max value of Vcs(max).

Datasheet is described typical 800mV only.

Best Regards,

  • 0
    TI__Expert 3260 points

    Hi Hirotsugu,

    Thanks for your interest in TI. The absolute maximum rating for Vcs(max) is -0.3V to 1.5V specified in the UCC28631 datasheet, I will help you to check with the designer to verify the range of the Vcs(max) and get back to you soon.


    But since Vcs(max) is already the maximum voltage that current sense modulator demands, I would recommend you to keep your current sense resistor design within the Vcs(min) and Vcs(max) range i.e. 172mV ~ 800mV.

    Thanks a lot.

    Best Regards,
    Wei-Hao Chen

  • 0 in reply to Wei-Hao Chen (TW-FAE)
    Mastermind 9540 points
    Hi,Chen.
    Do you have any update?
  • 0 in reply to Hirotsugu Kobayashi
    TI__Expert 3260 points

    Hi Hirotsugu,

    After confirming with the designer, the Vcs pin should be operating withing the range between the Vcs(min) and Vcs(max) which is 172mV to 800mV. The Vcs(max) parameter already defines the maximum level that CS modulator demands, so we did not specify the range for it.

    Please use this figure to design the maximum power level of your design, refer to Table 6 in the datasheet for Vcs range and mode of operation.

    I hope this would help, and thank you for your patience.

    Please let us know if you have any further questions.

    Best Regards,

    Wei-Hao Chen