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DC PoE Injector

jwpleow·DC_PoE_Injector

DC PoE Injector PCB layout, top view — open source board by jwpleow

About the DC PoE Injector PCB

DC PoE Injector is an open source PCB design by jwpleow, published on GitHub. It is a 4-layer board measuring 68.1 × 102.5 mm, with 67 components from 40 distinct parts.

Other key parts include the TPS23861, LM5155QDSSRQ1 and TPS7B8233QDGNRQ1. By type, the board carries 30 capacitors, 21 resistors, 4 connectors, 4 diodes, 3 ICs and 2 transistors.

It belongs with the power & battery designs in this gallery.

From the project

Midspan 802.3at PoE Injector, with DC power supply input, in KiCAD

It's too hard to find a midspan injector that takes in DC voltage.. (e.g. Phihong POE30D-1ATP-R / POE20D-1AF-R is a little hard to get a hold of)

Disclaimer: Amateur hobbyist-grade work. I've got it printed and assembled by JLCPCB and used it successfully.

Main components on the DC PoE Injector

TPS23861LM5155QDSSRQ1TPS7B8233QDGNRQ1

DC PoE Injector bill of materials (BOM)

67 components, 40 distinct parts.

QtyPartRefs
1
TPS23861
U1
1
LM5155QDSSRQ1
U2
1
TPS7B8233QDGNRQ1
U3
1
IRLR3410TRPBF
Q1
1
CSD19537Q3T
Q2
1
PWR IN
J1
2
R-RJ45R08P-C000
J2, J3
1
54V Test Points
J4
1
2920L110/60MR
F1
1
SM51625EL
T1
1
SMBJ58A 58V
D1
1
TVS3300DRVx
D2
1
STPS3H100UF
D3
1
LED
D4
1
9A 22uH 37mOhm TMPC1265HP-220MG-D
L1
2
100n, 100V
C1, C3
1
100n, 50V
C2
8
10n 200V
C4, C5, C6, C7, C8, C9, C10, C11
2
1n 2kV
C12, C13
1
68u
C14
Show 20 more
QtyPartRefs
2
4u7
C15, C16
1
10n
C17
2
4u7 100V
C18, C19
2
68u 100V
C20, C21
1
100p
C22
1
1n5
C23
1
470n 25V
C24
1
100n
C25
3
1u
C26, C29, C30
2
10u
C27, C28
1
47
R1
2
510m 1%
R2, R3
1
22.1
R4
8
75
R5, R6, R7, R8, R9, R10, R11, R12
3
48k7
R13, R17, R21
1
120k
R14
1
100
R15
1
15m
R16
2
2k26
R18, R20
1
5k76
R19

DC PoE Injector design files

The KiCad project lives in the jwpleow/DC_PoE_Injector repository on GitHub; these links point at the commit this page was built from.

DC PoE Injector: common questions

How big is the DC PoE Injector PCB?

The DC PoE Injector measures 68.1 × 102.5 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the DC PoE Injector?

67 components, from 40 distinct parts. The full bill of materials is listed on this page.

Where can I download the DC PoE Injector design files?

From the jwpleow/DC_PoE_Injector repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the DC PoE Injector design in my own project?

The repository has no license, so all rights stay with jwpleow. Use it as a reference, and ask the author before reusing the design.

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