THBT15011 데이터 시트보기 (PDF) - STMicroelectronics

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THBT15011

Tripolar overvoltage protection for telecom line

STMicroelectronics 

Test circuits

2

Test circuits

THBT15011, THBT20011, THBT27011

2.1

Test procedure for test circuit 1 for IBO and VBO parameters

Figure 4. Test circuit 1 for IBO and VBO parameters

K

ton = 20ms

R1 = 140Ω

220V 50Hz

Vout

R2 = 240Ω

DUT

VBO

measurement

1/4

IBO

measurement

Pulse test duration (tp = 20 ms):

● For bidirectional devices switch K is closed.

● For unidirectional devices switch K is open.

VOUT selection:

● For device with VBO < 200 V, VOUT = 250 VRMS, R1 = 140 Ω.

● For device with VBO ≥ 200 V, VOUT = 480 VRMS, R2 = 240 Ω.

2.2

Test procedure for test circuit 2 for dynamic IH parameter

Figure 5. Test circuit 2 for dynamic IH parameter

R

Surge generator

VBAT = - 48 V

D.U.T

This is a go no-go test, which can confirm the holding current (IH) level.

Procedure

1. Adjust the current level at the IH value by short circuiting the AK of the D.U.T.

2. Fire the D.U.T. with a surge current IPP = 10A, 10/1000µs.

3. The D.U.T. will come back off-state within 50 ms maximum.

4/11

Doc ID 3767 Rev 9

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