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參數(shù)資料
| 型號(hào)： | ACS10MS |
| 廠商： | Intersil Corporation |
| 元件分類(lèi)： | DC/DC變換器 |
| 英文描述： | RB Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 24V; Output Voltage (Vdc): 3.3V; Power: 1W; Low Cost 1W Converter; Power Sharing on Dual Output Version; Industry Standard Pinout; 1kVDC & 2kVDC Isolation Options; Optional Continuous Short Circuit Protected; UL94V-0 Package Material; Efficiency to 85% |
| 中文描述： | 輻射加固三三輸入與非門(mén) |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大小： | 94K |
| 代理商： | ACS10MS |
ACS102-5Tx
4/8
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
.
The energy stored in the inductance of the load depends on the holding current I
H
and the inductance (up
to 10 H); it can reach about 20 mJ and is dissipated in the clamping diode section. The ACS switch sus-
tains the turn off energy, because its clamping section is designed for that purpose.
HIGH INDUCTIVE SWITCH-OFF OPERATION
T
ime (400μs/div)
I
OUT
(10 mA/div)
V
OUT
(200V/div)
I
H
V
CL
= 650V
Fig. 1:
Turn-off operation of the ACS102 switch
with an electro valve: waveform of the gate current
I
G
, pin OUT current I
OUT
& voltage V
OUT
.
I
H
V
CL
I
OUT
V
OUT
Fig. 2:
ACS102 switch static characteristic.
The ACS102 switch is able to withstand safely the AC line transient voltages either by clamping the low en-
ergy spikes or by breaking over under high energy shocks.
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 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 rate of increase 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
R
L
R
G
= 220
V
AC
+ V
PP
AC LINE &
SURGEVOLTAGE
GENERATOR
G
COM
OUT
ACSxx
ON
S
D
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.
Vout (200V/div)
Iout (2.5 A/div)
dI/dt = 70 A/μs
Fig. 4:
Current and Voltage of the ACS during
IEC61000-4-5 standard test with R = 150
, L = 5
μ
H
& V
PP
= 2kV.
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