Ive had a Salas Back in Black (SSLV1.1) board for a while.
Now its time to do something with it, the board came with a partial parts kit but I'm not sure what was supplied as yet.
I was going to set the Salas to run a Buffalo III main supply VD, currently a Placid is doing this duty.
The Buffalo manual says VD is 5v25 @ 440mA with the Trident regulator set.
My Buffalo is currently drawing a 185mA on VD with just one Trident V2.1 running the Avcc rails from the Placid.
The Tridents for VDD_xo, DVcc and VDd have been replaced with modified versions of Martins Fleas which equates for the difference in current.
A little further measurement with the AVcc Trident removed showed just 6.7mA on VD, so the AVcc is up at around 180mA and the VD alone is just 8mA.
This made me reconsider my approach, now thinking to use the Salas for solely AVcc duty either with the Trident or using just the Salas alone. Leaving me with just 8mA to feed into the Buffalo VD terminals from something else. 8mA is bang in standard Flea territory so the new scheme looks to be
Salas > Trident > AVcc
Flea > VD
Your thoughts are welcome, I'm just at the thinking aloud stage here.
Back to the Salas, first considerations assuming I go with the suggested scheme are either to use the BJT or FET version. Target voltage for the AVcc is 3v3
From the Salas build manual available here
a. 2.5-5.5V Vout BJT output reg. 1 red 1.9V LED, 1K trimmer. Other parts jumper.
b. 5V Vout Mosfet reg. 2 1.9V LED, 220 Ohm R303. Other parts jumper.
c. 10V-25V Mosfet reg. 2 1.9V LED, 1.8 kOhm R303. 5K trimmer. Other parts jumper.
d. 38V Mosfet reg. 2 1.9V LED, 33V 1/2W Zener, 220 Ohm R303. Other parts jumper.
e. 25-40V Mosfet reg. 2 1.9V LED, 6.8k R303, 5K trimmer. Other parts jumper.
Option a. 2.5-5.5V Vout BJT output reg seems to be the choice.
Regards
Tony
Now its time to do something with it, the board came with a partial parts kit but I'm not sure what was supplied as yet.
I was going to set the Salas to run a Buffalo III main supply VD, currently a Placid is doing this duty.
The Buffalo manual says VD is 5v25 @ 440mA with the Trident regulator set.
My Buffalo is currently drawing a 185mA on VD with just one Trident V2.1 running the Avcc rails from the Placid.
The Tridents for VDD_xo, DVcc and VDd have been replaced with modified versions of Martins Fleas which equates for the difference in current.
A little further measurement with the AVcc Trident removed showed just 6.7mA on VD, so the AVcc is up at around 180mA and the VD alone is just 8mA.
This made me reconsider my approach, now thinking to use the Salas for solely AVcc duty either with the Trident or using just the Salas alone. Leaving me with just 8mA to feed into the Buffalo VD terminals from something else. 8mA is bang in standard Flea territory so the new scheme looks to be
Salas > Trident > AVcc
Flea > VD
Your thoughts are welcome, I'm just at the thinking aloud stage here.
Back to the Salas, first considerations assuming I go with the suggested scheme are either to use the BJT or FET version. Target voltage for the AVcc is 3v3
From the Salas build manual available here
a. 2.5-5.5V Vout BJT output reg. 1 red 1.9V LED, 1K trimmer. Other parts jumper.
b. 5V Vout Mosfet reg. 2 1.9V LED, 220 Ohm R303. Other parts jumper.
c. 10V-25V Mosfet reg. 2 1.9V LED, 1.8 kOhm R303. 5K trimmer. Other parts jumper.
d. 38V Mosfet reg. 2 1.9V LED, 33V 1/2W Zener, 220 Ohm R303. Other parts jumper.
e. 25-40V Mosfet reg. 2 1.9V LED, 6.8k R303, 5K trimmer. Other parts jumper.
Option a. 2.5-5.5V Vout BJT output reg seems to be the choice.
Regards
Tony