• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 176 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.

TPS65150: Need help in reveiw for TPS65150 related schmatics entry.

Atharva U
Intellectual 400 points
Part Number: TPS65150

Hello

I'm doing TFT LCD pwr supply brd first time, hence need TI's help for review.

can you please help ? I've attched the sch page.

Also, one question, How VCOm is created ? I don't see any handle over producing VCOm rail.

TP65150RGER_Display_page.pdf

  • 0
    TI__Mastermind 18550 points

    Hello Atharva,

    Thank you for your post. I have few other support tasks ahead of this but should be able to review this and provide any feedback by  February 11.

    Kind Regards,

    Liaqat

  • 0
    TI__Mastermind 18550 points

    Hello Atharva,

    Thank you for your post. I reviewed the schematics and have following comments:

    - A more appropriate calculated value for C7 would be 33pF.

    - I suggest to put a resistor in series with C15 to GND so that compensation network can be adjusted slightly if needed. Also, you should start out with an appropriate compensation network in accordance with table 1 in the datasheet.

    - Since your +AVDD_10P4 is approx. 10.4V and your +VGH voltage is approx. 16V, I think you only need a single stage of the positive charge pump and D4, C10 and C14 can be omitted. Or you can provide an assembly option for a single stage or dual stage charge pump on the board and start out with a single stage only.

    Kind Regards,

    Liaqat