參數(shù)資料
型號: ACS406
英文描述: ACS406 4 x E1/T1 Reference Design (190k)
中文描述: ACS406 4個E1/T1的參考設(shè)計(190K章)
文件頁數(shù): 4/7頁
文件大?。?/td> 88K
代理商: ACS406
ACS402-5SB4
4/8
Each ACS402 switch is able to safely withstand the AC line transient voltages either by clamping the low
energy spikes or by breaking over under high energy shocks.
The test circuit in Figure 3 is representative of the final ACS application and is also used to stress the
ACS switch according to the IEC61000-4-5 standard conditions. Thanks to the load, the ACS switch
withstands the voltage spikes up to 2 kV above the peak line voltage. It will break over safely even on resis-
tive load where the turn-on current rise is high as shown in 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 IEC61000-4-5
standard.
R = 150
, L = 5
μ
H, V
PP
= 2kV
.
Iout (2A/div)
Vout (200 V/div)
dI/dt = 100A/μs
Fig 4:
Current and voltage of the ACS during
IEC61000-4-5 standard test with a 150
- 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.
HIGH INDUCTIVE 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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