• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 62 subscribers
  • Views 264 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.

LM25116: Design idea confirmation

Kay Chen53
Expert 2225 points
Part Number: LM25116
Other Parts Discussed in Thread: CSD18537NQ5A

Hi there:

greeting, I'd like to have your help to double check the design idea whether is workable or not. (mainly use LM25116 firstly) 

our MOSFET was choose CSD18537NQ5A*2 .

Please help to advice is there any special consideration need to double check? 

LM25116.PPTX

  • 0
    TI__Mastermind 25590 points
    Kay,

    Your powerpoint shows:

    VIN=24V
    VOUT=2.2~22V

    1. It looks like a battery charger so I want to confirm that these are steady-state, continuous output voltages. You'll need the system to work continuously as low as 2.2V and as high as 22V for one circuit, yes?
    2. If so, the wide output voltage may present design challenges with inductor size -> CCM/DCM, minimum and maximum duty cycles... so..
    A) What is your desired switching frequency?
    B) Do you require fixed switching frequency?
    C) Do you have other considerations or constraints for this job?
    3. The FET looks good to me.

    -Sam