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CLP200M Datasheet(PDF) 10 Page - STMicroelectronics

No. de Pieza. CLP200M
Descripción  OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE
Descarga  21 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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CLP200M Datasheet(HTML) 10 Page - STMicroelectronics

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Fig. 17 : CLP200M response to the induction test
(Test 3a).
Fig. 18 : CLP200M reponse to the induction test
(Test 3b).
Fig. 19 : Power contact test.
Fig. 20 : Power contact test 3 (With 10
Ω series).
4
I
V
V(RMS)
50Hz
600
< 10
ΩΩ
15min
PTC
Rsense
Rp
or
TIPL
TIPS
GND
1/2 CLP200M
Fig. 21: Lightning test in speech mode.
10/700
µs
GENERATOR
+/- 4kV
4
TIPL
TIPS
GND
1/2 CLP200M
I
V1
50
I2
SLIC
LCP1511D
-48V
V2
1
Rsense
Rp
Figures 17 and 18 show that the remaining voltage
does not exceed 270 V.
Consequently,the CLP200M totally fulfills this test.
The test duration is not specified in test 3b. If the
duration exceeds 5s we do suggest to follow the
soldering and mounting recommendations given
on page 17 of this document.
3.2.3 Power contact (Test 3 table 1/K20)
This long duration surge is produced when con-
necting a subscriber line to an AC mains line or
equipment. The purpose of this test is to check the
robustness of the CLP200M against these distur-
bances.
The test 3 of CCITT K20 requires a serial PTC (or
fuse) which is inserted in the test circuit to limit the
current rate. This PTC acts like an open-circuit in a
non-instantaneous way when a surge occurs on
the line. Meanwhile, the CLP200M has to with-
stand the surge.
Figure 20 shows that the remaining overvoltage
does not exceed 250 V and shows that the PTC
acts like an open-circuit after 60 ms.
Consequently,the CLP200M totally fulfills this test.
3.3. Speech mode
3.3.1. Lightning simulation test
(Test 2, table 2/K20)
®
CLP200M
10/21


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