• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 31 subscribers
  • Views 1147 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.

Schematic review of LMP91300

Philip%20Park
Intellectual 1175 points
Part Number: LMP91300

Dear all,

Could you review LMP91300 schematic?

 

  • 0
    TI__Genius 13650 points

    Hello Philip,
    here are some observations:
    - C1 is a 1uF. This is too large. It should be no larger than 0.1uF.
    - R2 should be 10k.
    - The value of C3 depends on the inductor, but the value they have seems very large. It is usually less than 200pF.
    - C5 and C6 also depend on the coil. Usually 10pF or less is used here.
    - R1 is the over current sense resistor. This is usually a very small value (<10ohms, or board is 0.6ohms). They are using a 100k.
    - They have diodes and resistors in the supply and ground lines. This is ok as it is used for ESD protection and reverse power protection. However it does change the supply value that will need to be supplied to the LMP91300 to have the SWIF work correctly.