參數(shù)資料
型號(hào): L3121B
廠商: 意法半導(dǎo)體
英文描述: Programmable Transient Voltage Suppressor for SLIC Protection(可編程瞬變電壓抑制器)
中文描述: 可編程瞬態(tài)電壓抑制器保護(hù)的用戶接口(可編程瞬變電壓抑制器)
文件頁數(shù): 4/7頁
文件大?。?/td> 64K
代理商: L3121B
REFERENCETESTCIRCUIT FOR I
BO
and V
BO
parameters:
2
static
relay.
R1
140
R2
240
D.U.T
VBO
measure
I
measure
, I
BO
H
t p = 20ms
K
Transformer
220V/800V
5A
Auto
Transformer
220V/2A
Vout
FUNCTIONALHOLDING CURRENT (I
H
) TESTCIRCUIT= GO- NOGOTEST.
R
- V
P
V
BAT
= - 48 V
Surge generator
D.U.T.
This is a GO-NOGOTestwhichallowsto confirmthe holdingcurrent (I
H
) levelin a functional
test circuit.
This test can be performedif thereferencetestcircuit can’tbe implemented.
TESTPROCEDURE :
1) Adjustthe currentlevel at the IH valueby shortcircuiting theline and GND pinsof the D.U.T.
2) Firethe D.U.Twith a surgeCurrent: Ipp= 10A, 10/1000
μ
s.
3) The D.U.Twill comebackto theOFF-Statewithin a durationof 50 ms max.
TESTPROCEDURE:
PulseTestduration(tp = 20ms):
- ForBidirectionaldevices= SwitchK is closed
- ForUnidirectionaldevices= SwitchK is open.
V
OUT
Selection
- Devicewith V
BO
<
200 Volt
- V
OUT
= 250V
RMS
, R
1
= 140
.
- DevicewithV
BO
200Volt
- V
OUT
= 480 V
RMS
, R
2
= 240
.
L3121B
4/7
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