ACS108-8SN-TR STMicroelectronics, ACS108-8SN-TR Datasheet - Page 7

• Manufacturer Part Number: ACS108-8SN-TR
• Description: Triacs Overvoltage ACS 0.8A 600 and 800V 10mA
• Manufacturer: STMicroelectronics

Specifications of ACS108-8SN-TR

• Rohs: yes

ACS108
2.1.2
Figure 17. Switching off of a high inductive load - typical clamping capability of
Alternating current mains transient voltage ruggedness
The ACS108 switch is able to withstand safely the AC mains transients either by clamping
the low energy spikes or by breaking-over when subjected to high energy shocks, even with
high turn-on current rises.
The test circuit shown in
also used to test the AC switch according to the IEC 61000-4-5 standard conditions. Thanks
to the load limiting the current, the ACS108 switch withstands the voltage spikes up to 2 kV
above the peak mains voltage. The protection is based on an overvoltage crowbar
technology. Actually, the ACS108 breaks over safely as shown in
recovers its blocking voltage capability after the surge (switch off back at the next zero
crossing of the current).
Such non-repetitive tests can be done 10 times on each AC mains voltage polarity.
Figure 18. Overvoltage ruggedness test circuit for resistive and inductive loads,
100 µs/div
1
ACS108 (T
T
I
(5 mA/div)
T
Mains
voltage
230 V rms
50 Hz
amb
= 25 °C (
2
3
amb
+2 kV surge
Figure 18
4
generator
conditions equivalent to IEC 61000-4-5 standard)
= 25 °C)
I
Doc ID 6518 Rev 3
V
(200 V/div)
H
T
V
5
CL
is representative of the final ACS108 application, and is
Alternating current mains switch - basic application
C C
150
Load
5 µH
V T
COM
OUT
I T
ACS108
Figure
G
I
I
I
I
H
H
T
5
5
19. The ACS108
220
2
2
1
1
3
3
4
4
V
V
CL
CL
7/13
V
V
T