• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 256 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.

Output capacitor for TPS54372

Atsushi Yamauchi
Genius 4810 points
Other Parts Discussed in Thread: TPS54372

I would like to know the output capacitor for TPS54372.

The customer will use TPS54372 with +/-(sorce/sink) 0.5A.
And they want to reduce capacitance value for output capacitor (ex. 56uF*2 or 56uF*1).

In the case of using the small capacitor (112uF or 56uF),
are there any cautions with the small capacitor?

And in this case, how do we decide the phase compencation circuit?
I could not find the phase compencation in the datasheet.

Best regards,
Atsushi Yamauchi

  • 0
    TI__Guru**** 191445 points

    The TPS54372 is a voltage mode converter with external compensation.  It will support a wide range of output capacitance.  The real questions are "What kind of load transients will the converter see and how much voltage deviation can I tolerate?"  Those will determine the amount of capacitance you need.  The TPS54372 supports type 1, type 2 or type 3 compensation.  Type 3 is usually appropriate.  There are many schemes to place the poles and zeros and derive the compensation values.  If you are uncomfortable with that I recommend using Switcherpro or Webench software tools.