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EMC optimisations

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-eth shield is not connected to the GND rather it shields "input" of poe
-used smaller package for bulk PoE capacitor
-Changed common mode filter to Pulse T8113
-Added more inductor filters on the primary side
-replaced secondary side ferrite silter with an inductor
-used distributed "flyback" capacitor (3 instead of 1)
-slightly increased distance between the poe transformer and the
ethernet signal traces
- extended GND1 under the transformer
- primary snubber circuit is now in "hot-loop" area
-repositioned poe enable optocoupler

Signed-off-by: Dominik Sliwa <dominik@sliwa.io>
This commit is contained in:
Dominik Sliwa
2022-07-25 01:29:09 +02:00
parent a60829b4cf
commit f6dc839e95
9 changed files with 19053 additions and 13152 deletions
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20
USB.kicad_sch
View File

@@ -5217,12 +5217,12 @@
(pin "2" (uuid c401c8e2-0382-4889-9184-7f73b71e8f76))
(pin "3" (uuid 8b07577d-47f3-43a3-9526-902df9bbf607))
(pin "4" (uuid 950cf0c6-dc16-4147-9187-b83edf8563a8))
(pin "9" (uuid 7b0b4e01-6b4a-4112-bb13-d5412823b9ed))
(pin "9" (uuid 7b0b4e01-6b4a-4112-bb13-d5412823b9f1))
(pin "5" (uuid b7dbde41-cd4a-4361-a041-a422ea177cc5))
(pin "6" (uuid 5bbfac04-8a57-4f33-8344-e5c2233ebf24))
(pin "7" (uuid 5629f661-91ba-4482-92f9-563bc43b0660))
(pin "8" (uuid 4f1c4753-9e5e-410e-821e-52efe15cf90a))
(pin "9" (uuid 7b0b4e01-6b4a-4112-bb13-d5412823b9ed))
(pin "9" (uuid 7b0b4e01-6b4a-4112-bb13-d5412823b9f1))
)
(symbol (lib_id "power:GND") (at 89.535 163.195 270) (unit 1)
@@ -5247,7 +5247,7 @@
(in_bom yes) (on_board yes)
(uuid 6d1a79fb-ea43-483b-a0b8-a18e853c0b07)
(property "Reference" "R28" (id 0) (at 50.8 100.076 0))
(property "Value" "" (id 1) (at 50.8 101.854 0))
(property "Value" "0" (id 1) (at 50.8 101.854 0))
(property "Footprint" "Resistor_SMD:R_0402_1005Metric" (id 2) (at 48.26 100.838 0)
(effects (font (size 1.27 1.27)) hide)
)
@@ -5328,8 +5328,8 @@
(pin "2" (uuid 4934dc5c-5380-455d-ae19-6e24d9bfceb5))
(pin "3" (uuid 729ac378-dce4-4df9-9bf1-e8016771d36d))
(pin "4" (uuid e4ee4232-6f40-426c-90f1-7eba2ae8f6f9))
(pin "5" (uuid 74619864-2e66-4d77-8dea-82d40bdf54d5))
(pin "5" (uuid 74619864-2e66-4d77-8dea-82d40bdf54d5))
(pin "5" (uuid 74619864-2e66-4d77-8dea-82d40bdf54d9))
(pin "5" (uuid 74619864-2e66-4d77-8dea-82d40bdf54d9))
(pin "6" (uuid 859581d4-43af-4391-b60d-17abe81465d4))
(pin "7" (uuid 3c49b464-5158-4723-9673-90a35b2f17b5))
(pin "8" (uuid f20f6f01-9336-44ee-88a8-0238647d91d6))
@@ -5370,8 +5370,8 @@
(in_bom yes) (on_board yes)
(uuid 82c7370d-8a87-411e-9cd6-cc5ad23f7d5b)
(property "Reference" "D30" (id 0) (at 33.528 103.886 0))
(property "Value" "" (id 1) (at 33.528 105.918 0))
(property "Footprint" "" (id 2) (at 33.528 101.6 90)
(property "Value" "CDBQR0130L" (id 1) (at 33.528 105.918 0))
(property "Footprint" "Diode_SMD:D_0402_1005Metric" (id 2) (at 33.528 101.6 90)
(effects (font (size 1.27 1.27)) hide)
)
(property "Datasheet" "~" (id 3) (at 33.528 101.6 90)
@@ -5786,8 +5786,8 @@
(in_bom yes) (on_board yes)
(uuid c1e412a1-3362-4a10-be21-16ffed3416c8)
(property "Reference" "R41" (id 0) (at 56.134 100.076 0))
(property "Value" "" (id 1) (at 56.134 101.854 0))
(property "Footprint" "" (id 2) (at 53.594 100.838 0)
(property "Value" "100" (id 1) (at 56.134 101.854 0))
(property "Footprint" "Resistor_SMD:R_0402_1005Metric" (id 2) (at 53.594 100.838 0)
(effects (font (size 1.27 1.27)) hide)
)
(property "Datasheet" "~" (id 3) (at 53.594 100.838 0)
@@ -6011,7 +6011,7 @@
(in_bom yes) (on_board yes)
(uuid ebca0634-9ef4-4a87-a66a-c40f06832695)
(property "Reference" "R27" (id 0) (at 26.924 99.314 90))
(property "Value" "" (id 1) (at 26.924 104.032 90))
(property "Value" "10" (id 1) (at 26.924 104.032 90))
(property "Footprint" "Resistor_SMD:R_0402_1005Metric" (id 2) (at 26.924 101.6 0)
(effects (font (size 1.27 1.27)) hide)
)