• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 62 subscribers
  • Views 70 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.

TPS61170: operation when Vin > regulated Vout

Sam Ting
Expert 3060 points
Part Number: TPS61170

Hi team,

Since the input source is battery, the input voltage may be higher than the regulated output voltage. Could you explain the detailed behavior and comment if there are any potential risks in this condition? Thanks!

Regards,
Sam Ting

  • +1
    TI__Genius 10940 points

    Hi Sam,

    Generally, when Vin is very close to Vout, since limited by the min ton time, there may be some uncontrolled behaviors. For example, the Vout deviates the regulated value, big Vout ripples. When Vin is larger than Vout, there will be risks to saturate the inductor and damage the device.

    Case by case check is needed for more accurate behaviors for boosts have different control methods and features.

    Regarding the TPS61170, I will do a test and give you the feedback.

    Could you provide the detailed Vin, Vout and Iout?

    It will be better if the customer name and application can be shared.

    Regards

    Lei