[MinnowBoard] TurboT DualE board power by LSE header

[Alex Bakhtin]

Hello.

    Is it possible to power the TurboT Dual-Ethernet - Dual Core board from
LSE header?

    Right not we are testing how TurboT fits out project. TurboT could be
one of the core components, but the whole device should be dual-powered
(220V AC and 10-36VDC). From my point of view - this is a good idea to
desing a PCB on which we would install our PSU, and also provide a mounting
space for TurboT - holes and connection to the LSE header (I think we would
also use one uart from LSE header).

    I checked the turbot schematics and I see that DC_IN_1 (power supply
connector) is filtered by an LC filter, connected to protection curcuit and
after that is connected to +PS_5VSB.
    +PS_5VSB is connected to pin 3 of LSE header and supply 5V power to the
rest of the board. So, according to turbot schematics - we can supply +5V
to the PS_5VSB directly and everything should be fine.

    In the turbot gerber files I can see that this pin is connected to
polygon on Layer 06, and it seems that this polygon is directly connected
to Q103 and FB1->U13 (3V power supply).

    Is it ok to supply 5VDC it from LSE header? Thank you.

Alex Bakhtin

-- 

Alex Bakhtin
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.elinux.org/pipermail/elinux-minnowboard/attachments/20180331/f41fdf09/attachment.html>