參數(shù)資料
型號(hào): ACS402-5SB4
廠商: 意法半導(dǎo)體
英文描述: QUAD AC LINE SWITCH ARRAY
中文描述: 四線開關(guān)陣列交流
文件頁數(shù): 4/6頁
文件大小: 84K
代理商: ACS402-5SB4
ACS402-5SB4
4/6
Each ACS402 switch is able to sustain safely the AC line transient voltages either by clamping the low en-
ergy spikes or by breaking over under high energy shocks, even with high turn-on current rises.
The test circuit of the figure 3 is representative of the final ACS application and is also used to stress the
ACS switch according to the IEC1000-4-5 standard conditions. Thanks to the load, the ACS switch
sustainsthevoltagespikesupto2kVabovethepeaklinevoltage.Itwillbreakoversafelyevenonresistive
load where the turn on current rise is high as shown on figure 4. Such non repetitive test can be done 10
times on each AC line voltage polarity.
AC LINE TRANSIENT VOLTAGE RUGGEDNESS
Fig 3:
Overvoltage ruggedness test circuit for
resistive and inductive loads according to IEC
1000-4-5 standard.
R = 150
, L = 5
μ
H, V
PP
= 2kV
.
Iout (2 A/div)
Vout (200 V/div)
dI/dt = 100 A/μs
Fig 4:
Current and voltage of the ACS during
IEC 1000-4-5 standard test with a 220
- 10
μ
H
load & V
PP
= 2kV.
Fig 1:
Turn-off operation of the ACS402 switch
with an electro valve: waveform of the gate current
I
G
, pin OUT current I
OUT
& voltage V
OUT
.
T
ime (400μs/div)
I
OUT
(10 mA/div)
V
OUT
(200V/div)
I
H
V
CL
= 650V
At the end of the last conduction half-cycle, the load current reaches the holding current level I
H
, and the
ACS switch turns off. Because of the inductance L of the load, the current flows through the avalanche
diode D and decreases linearly to zero. During this time, the voltage across the switch is limited to the
clamping voltage V
CL
.
TheenergystoredintheinductanceoftheloaddependsontheholdingcurrentI
H
andtheinductance(upto
10 H); it can reach about 20 mJ and is dissipated in the clamping section that is especially designed for that
purpose.
SWITCH-OFF OPERATION
Fig 2:
ACS402 switch static characteristic.
I
H
V
CL
I
OUT
V
OUT
R
L
R
G
= 220
V
AC
+ V
PP
AC LINE &
SURGEVOLTAGE
GENERATOR
G
COM
OUT
ACSxx
ON
S
D
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