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www.st.com
UM2107
User manual
Getting started with STEVAL-OET001V1 LCP154DJF evaluation
board to validate lightning protection for SLIC transceivers
Introduction
The STEVAL-OET001V1 board is designed to validate lightning protection for SLIC transceivers.
The board complies with ITU-T K20/21/45 and GR1089-Core associated with the Cooper Bussmann
telecom circuit protector fuse (TCP 1.25 A).
Figure 1: STEVAL-OET001V1 evaluation board
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Contents
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Contents
1 Board purpose, use and connections ............................................ 5
2 Schematic diagrams ........................................................................ 6
3 Bill of materials ................................................................................ 8
4 Revision history .............................................................................. 9
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List of tables
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List of tables
Table 1: STEVAL-OET001V1 bill of materials ............................................................................................ 8
Table 2: Document revision history ............................................................................................................ 9
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List of figures
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List of figures
Figure 1: STEVAL-OET001V1 evaluation board ........................................................................................ 1
Figure 2: One POTS line connection .......................................................................................................... 5
Figure 3: STEVAL-OET001V1 circuit schematic ........................................................................................ 6
Figure 4: LCP154DJF connections ............................................................................................................. 7
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Board purpose, use and connections
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1 Board purpose, use and connections
The goal of this evaluation board is to validate lightning protection for SLIC transceivers.
The board is able to protect four POTS lines. Several boards can be used if the number of
POTS lines is higher than four.
To use the board:
connect the lines in female RJ11 “LINEx” connectors (LINE1, LINE2, LINE3 and
LINE4)
plug cables to the “SLICx” connectors (RJ11 plug 6P4C) (cables are not provided)
plug the other end of the cable to the RJ11 SLIC transceiver
connect -Vbat from SLIC between GATE (GATE1, GATE2, GATE3 and GATE4) and
GND (GND1, GND2, GND3 and GND4); e.g., VGATE-GND = -Vbat = -48 V
In Figure 1: "STEVAL-OET001V1 evaluation board", each POTS line has a LCP154DJF
and a 220 nF capacitor connected between GND and GATE, a female RJ11 to be
connected to the line (LINE1, LINE2, LINE3 and LINE4) and a female RJ11 to be
connected to the SLIC (SLIC1, SLIC 2, SLIC3 and SLIC4).
The following figure shows the LCP154DJF connection schematic for one line.
Figure 2: One POTS line connection
All GND are connected.
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Schematic diagrams
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The following figure shows the board schematic. Each line has 1 x LCP154DJF, 1 x 220 nF
capacitor connected between GND and GATE, 1 female RJ11 to be connected to the line
(labelled: LINE1, LINE2, LINE3 and LINE4) and 1 female RJ11 to be connected to the
SLIC (labelled: SLIC1, SLIC 2, SLIC3 and SLIC4).
Figure 3: STEVAL-OET001V1 circuit schematic
J1 LINE1
1
2
3
4
5
6
GND3
PLUG 4 mm
1
GATE3
PLUG 4 mm
1
C1
220n
F4
FUSE
F8
FUSE
F3
FUSE
J4 SLIC2
1
2
3
4
5
6
F7
FUSE
F6
FUSE
GND1
PLUG 4 mm
1
J8 SLIC4
1
2
3
4
5
6
F5
FUSE
J6 SLIC3
1
2
3
4
5
6
U2
LCP154DJF
J2 SLIC1
1
2
3
4
5
6
U4
LCP154DJF
U3
LCP154DJF
GATE1
PLUG 4 mm
1
U1
LCP154DJF
J3 LINE2
1
2
3
4
5
6
F2
FUSE
C2
220n
J7 LINE4
1
2
3
4
5
6
J5 LINE3
1
2
3
4
5
6
GND2
PLUG 4 mm
1
F1
FUSE
GATE2
PLUG 4 mm
1
C4
220n
GATE4
PLUG 4 mm
1
C3
220n
GND4
PLUG 4 mm
1
GSPG1507160920SG
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Schematic diagrams
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The figure below shows the connection of LCP154DJF associated with a SLIC.
Figure 4: LCP154DJF connections
See application note AN4876 on www.st.com for further LCP154DJF implementation and
performance details.
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Bill of materials
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Table 1: STEVAL-OET001V1 bill of materials
Item
Q.ty
Reference
Value
Description
Order code
Manufacturer
1
4
C1, C2, C3,
C4
1210
X7R
200 V
220 nF
220nF SMD
capacitor
MC1210B224K201CT
Multicomp
2
8
F1, F2, F3, F4,
F5, F6, F7, F8
1.25 A
Fuse CooperBussmann
TR2/TCP1.25-R
Eaton/
Bussmann
3
8
J1, J2, J3, J4,
J5, J6, J7, J8
RJ11 female
plugs
331-6409
R.S.
4
8
GND1, GND2,
GND3, GND4,
GATE1,
GATE2,
GATE3,
GATE4
plug 4
mm
4 mm
connectors
5
4
U1, U2, U3,
U4
Programmable
transient voltage
suppressor
LCP154DJF
ST
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Revision history
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4 Revision history
Table 2: Document revision history
Date
Revision
Changes
31-Aug-2016
1
Initial release
01-Sep-2016
2
Minor text changes
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