• State TI Thinks Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 154 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.

TPS543B20: Schematics review

Shifali N
Expert 2095 points
Part Number: TPS543B20
Other Parts Discussed in Thread: TPS543C20A, TPS543C20

Hi Team,

1. I am using TPS543B20RVFT in a stacked configuration and the design parameters are mentioned as below:

Vin=12V

Vout=0.85V

Iout=50A

I  have attached the circuit design and would like to get it reviewed by TI experts.

2. What is the High-level input voltage of Enable pin.

Thanks,

Shifali N

TPS543B20_TPS543C20A_TPS543C20_Calculator-0V85-50A.xlsx8510.TPS543B20RVFT.pdf

  • 0
    TI__Expert 7320 points

    Hi Shifali,

    Our US team will reply you next Monday.

  • 0
    TI__Expert 5856 points

    Hi Shifali,

    I do not see any issues with this design. The only recommendation I have is the same as the one mentioned in the TPS543C20 review - that having a placeholder for a feedforward capacitor will allow for more flexibility. If you want the flexibility to adjust the design on the fly, then it may be worth including placeholders for a resistor divider and feedforward capacitor. This would include a top resistor between VOUT and RSP (shorted with 0Ohm), a bottom resistor between RSP and RSN (unpopulated), and a feed-forward capacitor (unpopulated) in parallel with RSP. 

    Best regards,

    Britton

  • 0 in reply to Britton Jones
    Expert 2095 points

    Hi Britton,

    Thanks for your feedback.

    Please let  me know what is the High-level input voltage of Enable pin. Can I power On this IC using 1.2V signal in this Enable pin.

    Thanks,

    Shifali N

  • 0 in reply to Shifali N
    TI__Expert 5856 points

    Shifali, 

    No, you will not be able to use a 1.2V signal for EN. The threshold for EN is 1.6V +/- 0.15V. This can be found on page 7 of the datasheet.


    Best regards,

    Britton