Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

TL431: Can it regulate 300V DC?
TL431: Can it regulate 300V DC?
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 26th September 2005, 02:29 AM   #11
richwalters is offline richwalters
diyAudio Member
 
richwalters's Avatar
 
Join Date: Sep 2003
Location: Alps:Tube amp designs over 150W, SMPS guru.
The tube cad doesn't show the pole compensation required for the TL431 otherwise it can nicely oscillate. In the real world this device can behave otherwise and is one of typical omissions using such computer programs. Bread board and suss it out..

richj
  Reply With Quote
Old 26th September 2005, 10:45 AM   #12
jackinnj is offline jackinnj  United States
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
TL431: Can it regulate 300V DC?
Quote:
Originally posted by richwalters
The tube cad doesn't show the pole compensation required for the TL431 otherwise it can nicely oscillate. In the real world this device can behave otherwise and is one of typical omissions using such computer programs. Bread board and suss it out..

richj
the compensation for the TL431 is discussed in the September 15th 2005 issue of EDN --

the device doesn't have to be looked at as a black box --

SUBCKT TL431 7 6 11
* K A FDBK
.MODEL DCLAMP D (IS=13.5N RS=25M N=1.59
+ CJO=45P VJ=.75 M=.302 TT=50.4N BV=34V IBV=1MA)
*V1 1 6 2.495 ; used for fixed reference, replaced with EB1 Limiter
EB1 1 6 Value = { IF ( V(7,6)> 2.495, 2.495, V(7,6) ) }
R1 6 2 15.6
C1 2 6 .5U
R2 2 3 100
C2 3 4 .08U
R3 4 6 10
G2 6 8 3 6 1.73
D1 5 8 DCLAMP
D2 7 8 DCLAMP
V4 5 6 2
G1 6 2 1 11 0.11
.ENDS

note that the model on TI's website lacks the reactive components.
  Reply With Quote

Reply


TL431: Can it regulate 300V DC?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Using Battery for 300v B+ ? mark02131 Tubes / Valves 14 6th March 2009 07:41 AM
Can't Regulate, Help! mikee55 Parts 7 7th January 2007 11:24 AM
Tubes power supply 220 t0 300V ? wrangler Tubes / Valves 2 3rd September 2006 02:36 PM
How to regulate a negative rail with TL431? JoeBob Solid State 13 4th September 2004 11:56 AM
300V PSU for 6sn7 tube output stage in dac PTSOUNDLAB Tubes / Valves 0 17th June 2003 08:07 AM


New To Site? Need Help?

All times are GMT. The time now is 10:40 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki