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Original question:

TINA/Spice/UCC21520: Pins OUTA and OUTB aren't delivering expected voltage (too low for MOSFET)

TINA/Spice/UCC21520: UCC21520 Bootstrap error

V Aneesh Kola
Prodigy 20 points
Part Number: UCC21520
Other Parts Discussed in Thread: TINA-TI,

Tool/software: TINA-TI or Spice Models

Hi,

I am trying to design a Modified sine wave inverter using UCC21520. I tried simulating the system in TINA but for some reason it is showing convergence error. I am using a 15 V floating supply via Bootstrap capacitor. 
Please help.Modified sine wave inverter.TSC