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TINA/Spice/LM5030: Using Sync in PSpice

Part Number: LM5030
Other Parts Discussed in Thread: TINA-TI,

Tool/software: TINA-TI or Spice Models

Using LM5030 Pspice model, customer is unable to simulate Sync capability.  It seems it oscillates the output and PWM are unstable.  

Sync injection is as per specification 100nS pulse with 200kHz frequency to its RT pin and connected by 100pF capacitor and around 5V. 

Has anyone in product team tried simulation with Sync function? Or have any advise on how to simulate Sync?