• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 29 subscribers
  • Views 363 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.

DRV8833: fPWM Current control PWM frequency = 50kHz

Hirotaka Matsumoto
Guru 27525 points
Part Number: DRV8833

Hi all

Would you mind if we ask DRV8833?
There is the description "fPWM Current control PWM frequency = 50kHz" on the datasheet.
Does it mean that this frequency is for current control PMW light?

It is not relation to input PWM, right?

For example, we assume as follows;
Input PWM=5Hz -> Output freqency = 5Hz.

Kind regards,

Hirotaka Matsumoto

  • 0
    TI__Guru** 114905 points
    Hi Matsumoto-san,

    When the voltage across the sense resistor is less than Vtrip, the outputs follow the inputs.

    When the voltage across the sense resistor is equal to or greater than Vtrip, current control (section 7.3.3 of the datasheet) is activated. The current control will PWM the output at ~50kHz.