Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login
Buffalo III current draw
Options
View
Go to last post Go to first unread
Previous Topic Next Topic
normundss  
#1 Posted : Monday, October 3, 2011 12:08:39 PM(UTC)
normundss

Rank: Member

Groups: Member
Joined: 8/20/2011(UTC)
Posts: 3
Hi,

I have put together the Buffalo III board powered by Placid HD, however the current consumption for the board is 430 mA without other modules attached. It is quite a bit higher than the 350 mA BIII integration guide mentions. Placid HD is set to 5.248V output and 470mA CCS.

The output voltages on Trident regulators appear to be ok, VDD=1.198V; DVCC=3.318V; VD_XO=3.284V; AVCC=3.485V on both sides. All the LEDS on Tridents light up. However, the 1.2V VDD regulator gets very hot, within a few seconds of powering up the board it is impossible to keep a finger on QP1, QP2 or R4.

Is this normal current consumption?
Back to top

Wanna join the discussion?! Login to your Twisted Pear Audio Support forum accountor Register a new forum account.
Back to top  
AndriyOL  
#2 Posted : Sunday, October 16, 2011 10:29:58 AM(UTC)
AndriyOL

Rank: Member

Groups: Member
Joined: 2/27/2011(UTC)
Posts: 40
Location: Europe
The same current consumption with my BIII, powered by Placid HD..
Back to top
Russ White  
#3 Posted : Sunday, October 16, 2011 10:40:02 AM(UTC)
Russ White

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN

Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
The value quoted was intended as an estimate. We will update that in the documentation. I have my Placid set to 490ma.

Edited by user Sunday, October 16, 2011 10:49:22 AM(UTC)  | Reason: Not specified
Back to top
WWW
LeonvB  
#4 Posted : Sunday, October 16, 2011 2:11:56 PM(UTC)
LeonvB

Rank: Member

Groups: Member
Joined: 5/23/2010(UTC)
Posts: 708
Location: Netherlands

Thanks: 2 times
Was thanked: 48 time(s) in 45 post(s)
Fixed in guide version 1.0.4.
Back to top
AndriyOL  
#5 Posted : Monday, October 17, 2011 2:08:33 PM(UTC)
AndriyOL

Rank: Member

Groups: Member
Joined: 2/27/2011(UTC)
Posts: 40
Location: Europe
What's wrong with QP1 transistor it is getting so hot? QP2 in my setup of 1.2VDC trident is little warm.
Back to top
Russ White  
#6 Posted : Monday, October 17, 2011 4:00:15 PM(UTC)
Russ White

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN

Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
It should be hot. That is normal.
Back to top
WWW
adelias  
#7 Posted : Monday, October 24, 2011 1:38:00 AM(UTC)
adelias

Rank: Member

Groups: Member
Joined: 8/27/2008(UTC)
Posts: 13
How about the current for VD on the Buffalo 32, does the ~125mA stated in the manual still hold true?
Back to top
Russ White  
#8 Posted : Monday, October 24, 2011 4:41:12 AM(UTC)
Russ White

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN

Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
adelias wrote:
How about the current for VD on the Buffalo 32, does the ~125mA stated in the manual still hold true?


Yes, around that. But, that is a completely different circuit.
Back to top
WWW
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (5)
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Youtube
Copyright © Twisted Pear Audio