• State
  • Locked Locked
  • Replies 0 replies
  • Subscribers 63 subscribers
  • Views 185 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.

UCC28950 Transient PSpice Model SYNC Input

Stephen Savulak
Prodigy 10 points
Other Parts Discussed in Thread: UCC28950

Has anyone successfully used the UCC28950 transient PSpice model with the chip set as a Slave and an external clock input to the SYNC pin?  No matter what I do I can't get the chip to synchronize to the external clock, it still runs at the frequency set by RT.  I have done everything the datasheets and app notes say:  RT to ground, 825k from SS/EN to ground, SYNC frequency is greater than 1.8 times the natural converter frequency set by RT.  Help!