• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 218 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

TPS40210: Request for review of TPS40210 power circuit

Hoi Wa Ip
Intellectual 720 points
Part Number: TPS40210

Hi Ti Expert team,

We designed a power circuit based on TPS40210. Below is the schematic for your reference. Could you please help review it and give us comments where is necessary? Thank so much.

power circuit-review.pdf  

  • 0
    TI__Guru* 78070 points

    Hi Hoi Wa Ip,

    Thank you for reaching out and for designing with the TPS40210.   Below is my review comments:

    (1) You do not need D3 if the input voltage is 33.3V.  You only need the diode if the input voltage can drop below BP voltage during operation. 

    (2) C23, R1 and C6 are not needed in this circuit.  They do not do much but take the space for PCB layout around the IC and should be deleted.

    (3) C3 can choose a much smaller value, because the soft start is convrolled by the secondary circuit (D2 circuit). 

    (4) R17 can be crossed out as it is in series with R14.  

    Please double check the component ratings.

    Thanks,

    Youhao Xi, Applications Engineering