ACST12 查看數據表（PDF） - STMicroelectronics
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ACST12 Datasheet PDF : 12 Pages
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ACST12
Transient protected AC power switch
Features
■ Triac with overvoltage crowbar technology
■ Low IGT (<10 mA) or high immunity
(IGT<35 mA) version
■ High noise immunity: static dV/dt > 2000 V/µs
Benefits
■ Enables equipment to meet IEC 61000-4-5
■ High off-state reliability with planar technology
■ Need no external over voltage protection
■ Reduces the power passive component count
■ High immunity against fast transients
described in IEC 61000-4-4 standards
Applications
■ AC mains static switching in appliance and
industrial control systems
■ Drive of medium power AC loads like:
– Universal drum motor of washing machine
– Compressor for fridge or air conditioner
Description
The ACST12 series belongs to the ACS/ACST
family built with the ASD (application specific
discrete) technology. This high performance
device is adapted to home appliances or industrial
systems and drives loads up to 12 A.
This ACST12 switch embeds a TRIAC structure
and a high voltage clamping device able to absorb
the inductive turn-off energy and withstand line
transients such as those described in the IEC
61000-4-5 standards. The ACST12-7S needs a
low gate current to be activated (IGT < 10 mA) and
in the mean time provides a high electrical noise
immunity such as those described in the IEC
61000-4-4 standards. The ACST12-7C offers an
extremely high static dV/dt immunity of 2 kV/µs
minimum.
OUT
OUT
G
OUT
COM
TO-220AB
ACST12-7xT
G
COM
D²PAK
ACST12-7xG
Figure 1. Functional diagram
OUT
G
COM
Table 1. Device summary
Symbol
Value
Unit
IT(RMS)
12
A
VDRM/VRRM
700
V
IGT
10 or 35
mA
December 2008
Rev 1
1/12
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