Texas Instruments BOOST-PSEMTHR-007, User Manual, Page: 20 / 38

Kelvin to U1-4
Kelvin to U1-11
Kelvin to U1-39
Kelvin to U1-32
GND GND
GND GND
2 Pair Ports 1-4
PSE Communication Connector
TP5
TP4
TP6
TP7
TP3
TP2
100nF
C8
100nF
C10
100nF
C9
100nF
C7
100nF
C6
100nF
C5
100nF
C3
100nF
C4
58V
D1
0.2
R1
GND
PSE_OSS
\PSE_INT
PSE_SDAO
PSE_SDAI
PSE_SCL
\PSE_RST
3.3V
TP8
5016
GND GND
VPWR
PSE_N1
PSE_N2
PSE_N3
PSE_N4
5
4
1
2
3
6
7
8
9
10
J1
5
4
1
2
3
6
7
8
9
10
J2
GND
VPWR
PSE_N5
PSE_N6
PSE_N7
PSE_N8
TP1
5011
VPWR VPWR
VPWR
PSE_D1
CH1_GATE
CH1_SEN
PSE_D2
CH2_GATE
CH2_SEN
PSE_D5
CH5_GATE
CH5_SEN
PSE_D6
CH6_GATE
CH6_SEN
PSE_D3
CH3_GATE
CH3_SEN
PSE_D4
CH4_GATE
CH4_SEN
PSE_D7
CH7_GATE
CH7_SEN
PSE_D8
CH8_GATE
CH8_SEN
PSE_N8 PSE_N7 PSE_N4 PSE_N3
PSE_N1 PSE_N2 PSE_N5 PSE_N6
0.51
R2
DNP
0.2
R3
0.51
R4
0.51
DNP
R9
DNP
0.2
R10
0.51
R11
DNP
0.2
R12
0.2
R5
0.51
R6
DNP
0.2
R7
0.51
R8
0.51
DNP
R13
DNP
0.2
R14
0.51
R15
DNP
0.2
R16
58V
D2
58V
D5
58V
D6
58V
D8
58V
D7
58V
D4
VPWR
58V
D3
4 Pair Ports 1-2
4
7
,8
1
,2
,3
5
,6
,
Q1
4
7
,8
1
,2
,3
5
,6
,
Q2
4
7
,8
1
,2
,3
5
,6
,
Q3
4
7
,8
1
,2
,3
5
,6
,
Q4
4
7
,8
1
,2
,3
5
,6
,
Q7
4
7
,8
1
,2
,3
5
,6
,
Q8
4
7
,8
1
,2
,3
5
,6
,
Q5
4
7
,8
1
,2
,3
5
,6
,
Q6
PSE_D1
PSE_D2
PSE_D3
PSE_D4
PSE_D5
PSE_D6
PSE_D7
PSE_D8
CH1_SEN
CH2_SEN
CH3_SEN
CH4_SEN
CH5_SEN
CH6_SEN
CH7_SEN
CH8_SEN
CH1_GATE
CH2_GATE
CH3_GATE
CH4_GATE
CH5_GATE
CH6_GATE
CH7_GATE
CH8_GATE
\PSE_INT
PSE_SCL
PSE_SDAI
PSE_OSS
PSE_SDAO
\PSE_RST
VPWR
3.3V
GND GND
0.1µF
C2
0.1uF
C1
GND
1 2
3 4
5 6
7 8
9 10
11 12
13 14
J5
GND
5
4
1
2
3
6
7
8
9
10
11
12
J3
GPIO_1
GPIO_2
GPIO_3
A1-A4 Connector
1 2
3 4
5 6
7 8
J4
11.0k R22
7.68k R23
GAT1
1
SEN1
2
DRAIN1
3
KSENSA
4
DRAIN2
5
SEN2
6
GAT2
7
GAT3
8
SEN3
9
DRAIN3
10
KSENSB
11
DRAIN4
12
SEN4
13
GAT4
14
NC
15
NC
16
VPWR
17
NC
18
NC
19
TEST4
20
AGND
21
NC
22
TEST1
23
TEST2
24
TEST3
25
TEST0
26
NC
27
NC
28
GAT5
29
SEN5
30
DRAIN5
31
KSENSC
32
DRAIN6
33
SEN6
34
GAT6
35
GAT7
36
SEN7
37
DRAIN7
38
KSENSD
39
DRAIN8
40
SEN8
41
GAT8
42
VDD
43
RESET
44
INT
45
DGND
46
TEST5
47
A1
48
A2
49
A3
50
A4
51
AUTO
52
SCL
53
SDAI
54
SDAO
55
OSS
56
PAD
57
TPS23881RTQ
U1
124k R17
61.9k R18
35.7k R19
22.6k R20
15.8k R21
1uF
C11
0.01uF
C12
GND
EVM Schematic, Layout Guidelines, PCB Assembly and Layer Plots
www.ti.com
20 SLVUBP0A – May 2019 – Revised August 2019
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TPS23881EVM: PoE, PSE, TPS23881 Evaluation Module
Figure 14. TPS23881EVM-008 (Daughterboard) Schematic