• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 40 subscribers
  • Views 218 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.

TIDA-00913: number of current sensors

Mohammad Karamali
Intellectual 375 points
Part Number: TIDA-00913
Other Parts Discussed in Thread: INA240

Hello,

What is the benefit of having three INA240 inline sensors instead of having two ?

Regards,

Mohammad.

  • 0
    TI__Expert 3300 points
    Dear Mohammed,

    please find below some example benefits for a 3-phase current sense system:

    - Short-circuit detection: If there's a short from the any of the three motor terminals to GND (DC-) it can be detected for any of the three phases.
    - Leakage detection: In normal operation ia+ib+ic=0. If the sum of not zero over a certain time, it may indicate a fault in the system.
    - Accuracy: If three sensors are available, we can choose the two sensors where the PWM has a higher duty cycle for better measurement accuracy and skip the sensor which has a small PWM duty cycle.

    Regards,
    Martin Staebler