LND150 Depletion MOSFET model - diyAudio
Go Back   Home > Forums > Design & Build > Software Tools

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
Reply
 
Thread Tools Search this Thread
Old 12th June 2012, 02:00 PM   #1
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
Default LND150 Depletion MOSFET model

Someone had posted a DMOS model for the LND150 on another forum. I've taken the Supertex info and re-worked it a tiny bit to come up with the following changes to their NMOS Model:

.SUBCKT BVS841_DepletionMosfets__1__5 10 20 30
M1 10 20 30 30 NMOS
.MODEL NMOS NMOS (
+ LEVEL=3
+ NSUB=5.0e13
+ TPG=1
+ CGDO=2.1716e-12
+ RD=400
+ VTO=-1.50
+ VMAX=1.0e8
+ ETA=0.1
+ NFS=6.6e10
+ TOX=1.0e-7
+ LD=1.698e-9
+ UO=862.425
+ XJ=6.467e-7
+ DELTA=0.1
+ THETA=1E-5
+ L=10e-6
+CGSO=5.09e-10
+ W=600e-6
+ KAPPA=1.0
+ )
.ENDS
Attached Images
File Type: gif LND150.gif (17.4 KB, 149 views)
  Reply With Quote
Old 12th June 2012, 02:26 PM   #2
iko is offline iko  Canada
diyAudio Moderator
 
iko's Avatar
 
Join Date: May 2008
Location: Toronto
I don't get it, supertex makes a whole library available, and LND150 has a model in it too (see below). Was there a problem with their model?

*LND150 MODEL
*
.MODEL LND150 NMOS (LEVEL=3 RS=150.00 NSUB=5.0E13
+DELTA=0.1 KAPPA=1.O TPG=1 CGDO=2.1716E-12
+RD=40.0 VTO=-2.0 VMAX=1.0E8 ETA=0.1
+NFS=6.6E10 TOX=1.0E-7 LD=1.698E-9 UO=862.425
+XJ=6.4666E-7 THETA=1.0E-5 CGSO=5.09E-10 L=10.0E-6
+W=600E-6)
*.ENDS
  Reply With Quote
Old 12th June 2012, 05:32 PM   #3
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
It's just the VTO and RD which are modified -- but it looks somewhat more than the chart on page 3 of the datasheet:
Attached Images
File Type: gif LND150_Comparison.gif (12.3 KB, 138 views)
  Reply With Quote
Old 5th June 2014, 11:28 PM   #4
b_force is offline b_force  Europe
diyAudio Member
 
Join Date: Jan 2004
To make this model work in mutlsim, are the following connections correct?

10 = Drain
20 = Gate
30 = Source

if so, I don't see that much difference if you add a capacitor parallel to the source resistor.
__________________
There are few laws more precise than those of perfect molecular chaos
  Reply With Quote

Reply


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
Infineon BSP135 depletion mode mosfet 45 Tubes / Valves 0 17th September 2010 11:06 PM
wanted Depletion mosfet thanh Solid State 15 1st May 2009 10:12 PM
WTB: LND150 Mosfet (for SOHA), shipped to UK phresh Swap Meet 0 11th January 2008 01:39 PM
depletion mode mosfet selection svokke Solid State 0 17th May 2004 09:47 PM


New To Site? Need Help?

All times are GMT. The time now is 10:00 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2