CLP200M datasheet(10/21 Pages) STMICROELECTRONICS

10 / 21 page

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CLP200M

10/21

Fig. 17 : CLP200M response to the induction test

(Test 3a).

Fig. 18 : CLP200M reponse to the induction test

(Test 3b).

V(RMS)

50Hz

600

< 10

ΩΩ

15min

PTC

Rsense

TIPL

TIPS

GND

1/2 CLP200M

Fig. 19 : Power contact test.

Fig. 20 : Power contact test 3 (With 10

Ω series).

10/700µs

GENERATOR

+/- 4kV

TIPL

TIPS

GND

1/2 CLP200M

SLIC

LCP1511D

-48V

Rsense

Fig. 21: Lightning test in speech mode.

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)

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