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SilentSwitcher - mains-free +/-15V and 6/5/3.3V power

Jan.didden 8
Jackinnj 8
Mikebarney 3
Oyvind 4
Mred 2
Noviygera 2
flaklapp 6
StevenCrook 2
mlloyd1 4
Rogster 3
6L6 4
poseidonsvoice 2
Mark Johnson 4
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BRN 2
ItsAllInMyHead 4
triode4 4
kumori 2
Arthur 4
ravid 2
sampsonite 4
Cabirio 2
Nisbeth 2
av-trouvaille 2 - 4
El_Arte 2
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ergo 3
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asnakeon 4
pgour 4
pfarrell 2
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Antsav 2
Alfi 2
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Jogi 2
Funkfink 2
Elwood625 2
32y0 2
lillo 4
Kruger - 4
Prodigy85 - 2
454Casull 2
Uptownsquash 2
JP 8
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RickRay -4
mhenschel 2
BDP 1
Kokanee 2
hirscwi 4
mahtew 3
mazzer 2
NeoTheOne 4
lung 1
DualTriode 8
peski 2
TNT 2
Jwilhelm 2
birdbox 4
simon dart 1
diy.tiger 4
jordheis 4
yhmzzz 2
CritterSoft 2
@MtlJazz 6
mattking52 - 2
1543 3
Jcon2 2
deburgh 2
dlucksinger 4
sikkis 4
kouiky 2
nbvcxw8000 2
myleftear 2
namghiwook 2
trung224 2
Neat Ripple 1
CG 2
zenmastering 4
Solve 1
skunark 4
Angchuck 2
ligascon 2
daveg 2
roh1018 2
passive420 - 1
Analogico 2
al2002 4
 
Note that higher output voltage requires also higher input voltage as the current draw from a low voltage power source easily becomes excessive. E.g. +/-27V@200mA would require close to 3A from 5V input. Also the efficiency of the DC-DC converter is lower at low input voltages.
 
Yet another reminder that there are still plenty of unconfirmed pre-orders for the new SilentSwitchers. Group buy closing date is next Friday. Please note that there is a limited number of devices available and I will give priority to confirmed orders.

Please confirm your order in the group buy thread before closing date of 8th of November 2024.
https://www.diyaudio.com/community/threads/gb-for-new-silentswitcher.419103/post-7825131
 
I just posted a thread about DIY ADCs that use these new SilentSwitchers. Actually even the DAC used in those measurement uses a new SilentSwitcher.
https://www.diyaudio.com/community/threads/diy-adcs.419922/post-7844591

Here are pictures of how the SilentSwitchers were mounted vertically using Keystone mounting brackets. The 2 black phillips screws are attached to the mounting bracket.

mounting.jpg
back.jpg
 
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Here is some information related to the new SilentSwitcher boards.

Enable

There is a 3-pin header for enabling the board. A jumper or a switch can be used to select either "PD" or "PSU" setting.

enable.jpg


In PD-setting the on-board USB PD controller is in charge of enabling the board. It negotiates the USB PD profile, monitors the input voltage and enables/disables the board. So it works well with USB PD compliant power sources. The downside of this mode is that in case a non-USB PD compliant power source is used the USB PD controller only accepts 5V input voltage. So it disables the board if e.g. a 12V battery is used.

In PSU-setting USB PD controller only negotiates the USB PD profile but does not monitor the input voltage. So this setting is similar to manual on/off switch. Both USB PD compliant and non-compliant power sources can be used.


Voltage setting of +/- output

To set the voltage of +/- outputs 4 resistors of 1206 size (R21, R22, R23, R25) need to be changed.

voltage_setting.jpg


Attached is a table of suitable resistors values for 5V, 12V, 15V, 20V and 24V outputs. Outputs are independent so an asymmetrical setting is possible (e.g. +5V/-15V). However polarity of outputs cannot be changed.

For high load currents at higher voltages the input voltage should be at least 9V.
 

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