• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 64 subscribers
  • Views 330 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.

BQ24650: Converter Operation 12kHz-17kHz or 17-25kHz?

Beau Rogers
Prodigy 240 points
Part Number: BQ24650

I am looking at the BQ24650 particularly at "converter operation" in the datasheet. I notice that it is mentioned twice in the both "Device Functional Modes," and "Feature Description." These descriptions are on page 13 and page 20 of the datasheet. When describing the converter operation, the description is the exact same for these two sections but in "Feature Description" is mentions an optimal range of 12-17kHz while in "Device Functional Modes" it mentions an optimal range of 17-25kHz. In Feature description, it carries this range forward to give inductor, capacitor and sense resistor recommendations but is this 17-25kHz range something else? 

Thanks,

Beau

  • 0
    TI__Guru 57651 points
    Beau,

    The LC resonant frequency, fo, is approximately 12 kHz – 17 kHz for the bq24650. The other 17-25kHz is a typo. We will make correction in the next revision of the d/s. Please follow Table 1 on the d/s for Typical Inductor, Capacitor, and Sense Resistor Values as a Function of Charge Current.

    Thanks,

    Ning.
    Please click "This Resolved my issue" button if this post answer your question.
  • 0 in reply to Ning T
    Prodigy 240 points
    Thank you, I thought that looked a little odd. Glad that is cleared up.