Hi all! I need simulation file for this IC. If someone has it, please share with me. I found here some files for UC3843, UC3842, but they are current mode, and I want something with voltage mode for flyback converter, which has voltage regulated from 30V to 300V. So I will be gratefull for model UC3825 or information how to simulate in Pspice PWM modulator with Soft Start and limit max current. PS. Perhaps you know another driver, which I can use in my project (flyback converter, Uo=30V-300V, Io=0.1A-0.2A, Poutmax=30W) and it's easy for simulating in Pspice? Thanks for all answers!
UC3825 help with Pspice
Mar 18, 2009
1 Replies
s
You can convert the model you have now from current mode to voltage mode by applying you own ramp voltage to the current sensing pin.
Regards
Klaus
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