• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 687 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.

TPS22964C: Question about TPS22964C QOD

Nicky Lim
Genius 3195 points
Part Number: TPS22964C
Other Parts Discussed in Thread: TPS22963C

Hello,

Attached is from TPS22964C datasheet.

What I want to know is the time which Vout is 0V duration caused by QOD(Quick Output Discharge).

If I will use 5V Vin and 5V Vforce, how long Vout is OV by QOD?

Regards,

Nicky

  • 0
    TI__Genius 15770 points

    Hi Nicky,

    The amount of time the output stays at 0V is dependent on the load and when the user applies VFORCE.

    Depending on the load, the QOD of the TPS22964C will pull down the voltage faster or slower. A large capacitance will slow the decay of the output and a heavy current load will quicken the decay. If QOD is not desired to pull down the output, then the TPS22963C can be used.

    If VFORCE is applied on VOUT the whole time, then VOUT will not decay down to 0V. If VOUT does decay to 0V, then it is because VFORCE is not applied and it will come back up when VFORCE is applied by the system. The diagram from the datasheet shows the recommended operation because if VOUT is applied and the device is still on, then reverse current will not be blocked.

    Thanks,

    Alek Kaknevicius