• State Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 64 subscribers
  • Views 296 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.

TL1451A: Single channel

Takashi Yamaguchi
Genius 12540 points
Part Number: TL1451A

Hi team,

The TL1451A is dual channels controller. When using single channel, is it ok to connect the input(IN+/-)-pin to GND, FB-pin to GND, and OUT-pin open, for the unused channel?  Can you tell me if there are any other precautions I need to take?

Could you also tell me the DTC-pin handling for the unused channel? 

Regards,

Yamaguchi

  • +1
    TI__Guru* 76745 points

    Hi Yamaguchi-san,

    Thank you for posting.  I would like to put the IN+ to GND and IN- to REF, and leave the OUT pin open.   Regarding DTC, you can leave it open because the channel is already stops switching by the IN- pin setting. 

    Thanks,

    Youhao Xi, Applications Engineering

  • 0 in reply to Youhao Xi
    TI__Genius 12540 points

    Hi Youhao-san,

    Thank you for the answer. How about the FB-pin handling for the unused channel? 

    Regards,

    Yamaguchi

  • +1 in reply to Takashi Yamaguchi
    TI__Guru* 76745 points

    Hi Yamaguchi-san,

    An important correction:  Sorry I made a big mistake in my previous reply.  For the unused channel, IN+ pin should be put to REF and IN- to GND, and leave OUT pin open. Sorry for the typos and the confusions this may cause you. 

    Regarding FB pin, I would leave the unused channel FB pin open, too.  Note that the FB pin is energized by the error amplifier. 

    Again, apologize for the typos. 

    Thanks,

    Youhao

  • 0 in reply to Youhao Xi
    TI__Genius 12540 points

    Hi Yuhao-san,

    Thank you so much for the correction. I will inform it to the customer. 

    Regards,

    Yamaguchi

  • 0 in reply to Takashi Yamaguchi
    TI__Guru* 76745 points

    Thank you Yamaguchi-san!  Please allow me to close this thread now and you can add a new post to re-open it or create a new thread.  

    Again, thank you!

    Best Regards,

    Youhao