• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 31 subscribers
  • Views 198 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.

TAS5729MD: Asking for the TAS5729 bst cap tolerance

SHH
Mastermind 30636 points
Part Number: TAS5729MD

Hi team,
Do we have the TAS5729 bst cap tolerance? What is the lowest and highest cap value that will impact the MOSFET turn on?


BR,
SHH

  • 0
    TI__Expert 6295 points
    hello, it is proposed to use 0.33uF BST CAP proposed on datasheet. In case customer dont have, 0.47uF/1uF Bootstrap capacitors are a little large. When the amplifier is powered up, it takes more charging time for the larger Bootstrap capacitors. While we need to make sure the charged voltage on Bootstrap capacitors are large enough after start-up. So during the power-up, if the capacitors are too large under the case that you showed previously(the input signal frequency is very low…), there is a possibility that the voltage on Bootstrap capacitors are too low. So if there is no input signal during power-up, it’s OK to use 0.47/1uF capacitors.

    Regards
    Linda