• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 65 subscribers
  • Views 304 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.

UCC25600 OC pin's rating

Red Yen
Expert 4360 points

Hi Team,

     Due to the latch funtion of OC pin, we must pull high over 2V, so we add external circuit to accomplish it,

pls let me the rating of OC pin, due to the datasheet no describe this.

thank you

  • 0
    TI__Guru 63405 points

    OC pin maximum voltage rating is 5V.

  • 0 in reply to Hong Huang
    Prodigy 150 points

    Dear Hong,

    I am planning to use an other over-current sensing method than proposed in application notes. I am going to us an aux FET to switch the half-bridge node to the OC pin, when the lower FET is on, see the following schematic:

     

    J3 goes to OC pin. Is D3 necessary, or there is built in diode (or zener diode) on OC pin?

    I know I will need good timing, the aux FET wil have a very low Gate charge to ensure its fast turn off before Q3's turn off.