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TPP25011 Datasheet(PDF) 4 Page - STMicroelectronics

No. de Pieza. TPP25011
Descripción  OVERVOLTAGE and OVERCURRENT PROTECTION for TELECOM LINE
Descarga  7 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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TPP25011 Datasheet(HTML) 4 Page - STMicroelectronics

   
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REFERENCE TEST CIRCUIT 1 :
FUNCTIONAL HOLDING CURRENT (IH) TEST CIRCUIT 2 = GO - NOGO TEST
static
relay.
R1
R2
240
140
D.U.T
V BO
measure
IBO
measure
tp = 20ms
K
Transformer
220V/800V
5A
Auto
Transformer
220V/2A
Vout
R
-VP
V
BAT = - 48 V
Surge generator
D.U.T.
TEST PROCEDURE :
Pulse Test duration (tp = 20ms):
- For Bidirectional devices = Switch K is closed
- For Unidirectional devices = Switch K is open.
VOUT Selection
- Device with VBO
< 200 Volt
-VOUT = 250 VRMS,R1 = 140
Ω.
- Device with VBO
≥ 200 Volt
-VOUT = 480 VRMS,R2 = 240
Ω.
This is a GO-NOGO Test which allows to confirm the holding current (IH) 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 = 10A , 10/1000
µs.
3) The D.U.T will come back off-state within 50 ms max.
TPP25011
4/7


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