How to simulate MOSFET output stage SOA curves at LTSpice? - diyAudio
Go Back   Home > Forums > Design & Build > Software Tools
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Software Tools SPICE, PCB CAD, speaker design and measurement software, calculators

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 13th October 2013, 09:23 PM   #1
danny92 is offline danny92  Portugal
diyAudio Member
Join Date: Nov 2012
Location: Lisbon
Question How to simulate MOSFET output stage SOA curves at LTSpice?

Hi everyone,

I'm doing a project with a class AB/B power amplifier with MOSFET output and I'm thinking about incorporating a VI limiter to the output devices. It was told me that the curves can be made with the help of LTSpice, but I don't know the commands I should use. Can someone help me here?

Best regards,
Attached Files
File Type: asc Amp7_tmc_hb5_s.asc (16.8 KB, 18 views)
File Type: txt Cordell Models.txt (19.2 KB, 7 views)
  Reply With Quote
Old 13th October 2013, 10:37 PM   #2
fas42 is offline fas42  Australia
Join Date: Jun 2012
Location: NSW, Australia
Blog Entries: 13
Haven't tried it myself, but if you join the Yahoo LTspice users group there is at least one example there of doing this sort of thing,
  Reply With Quote
Old 14th October 2013, 07:23 AM   #3
diyAudio Moderator
jazbo8's Avatar
Join Date: Jan 2011
Location: In Transient
You need to join the Yahoo Groups to read the threads from the above post. But it is simply adding a trace to your characteristic curves, e.g., if the maximum dissipation is 10W, then add a trace with y=10/x, where x is the voltage.
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Simulating the M1 Lateral FET amp in LTspice Mooly Solid State 3 9th March 2012 07:52 AM
LTspice and simulating tube circuits? markusA Software Tools 19 15th August 2011 02:04 AM
LTspice - problem simulating simple rectifier Pinkevin Power Supplies 14 19th August 2010 10:08 AM
Understanding output stage SOA?? Zero Cool Solid State 8 22nd November 2007 09:57 AM
Mosfet output stage help (please) bob123 Class D 5 3rd January 2006 11:48 PM

New To Site? Need Help?

All times are GMT. The time now is 09:03 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2