THBT15011_08 Datasheet, PDF (5/10 Pages) STMicroelectronics – Tripolar overvoltage protection for telecom line

THBT15011, THBT20011, THBT27011
Figure 5. Test circuit 2 for I_H parameter
R
V_BAT = - 48 V
D.U.T
Characteristics
Surge generator
This is a GO - NO GO test which allows confirmation of the holding current (I_H) level in a
functional test circuit.
TEST 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 = 10 A,10/1000 µs.
3/ The D.U.T. will come back off-state within 50 ms maximum.
Figure 6. Test circuit 3 for V_BO parameters
(VP is defined in no load condition)
L
R₂
V_P
C₁
R₁
R₄
R₃
C2
TIP
RING
G ND
Table 6. Parameters for selected pulse characteristics
Pulse (µs)
tr
tp
V_p
C₁
C₂
L
R₁
R₂
R₃
R₄
I_PP
R_p
(V)
(µF) (nF) (µH)
(Ω)
(Ω)
(Ω)
(Ω)
(A)
(Ω)
10
700 1500
20
200
0
50
15
25
25
30
10
1.2
50
1500
1
33
0
76
13
25
25
30
10
2
10
2500
10
0
1.1
1.3
0
3
3
38
62
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