ACST2
Product Page
The home appliance industry is shifting towards electronic control
on a worldwide basis. Together with this trend, electronics can
now cope with AC mains constraints where high voltage robustness
and transient voltage compatibility are the key challenges.
ST has designed the ACS™ and ACTS devices to control the numerous
AC loads necessary for the appliance process. These AC switches
meet the requirements of reliability, compactness and mass production
capability.
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| The new ACST2 series belongs to the AC power switch
family built around the ASD technology. These high performance
devices are adapted to home appliances or industrial systems and
drive loads up to 2 A such as pumps, fans or solenoids. ACST2
embeds a Triac structure with a high voltage clamping device to
absorb the inductive turn-off energy. Thanks to its crowbar auto-protection
technology it withstands line transients such as those described
in the IEC 61000-4-5 standards. This component needs a low gate
current to be activated (IGT < 10 mA) while providing a high
electrical noise immunity such as those described in the IEC 61000-4-4
standards. |
Key Markets And
Applications |
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AC ON/OFF static switching in appliances and industrial control
systems
Drive of low power highly resistive or inductive loads like solenoids,
pumps, fans and micro-motors
ACST2 typical application diagram
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Overvoltage crowbar technology |
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Needs no external overvoltage protection |
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800 V to avoid premature firing |
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Best in class trade-off: static dV/dt > 500 V/μs:
IGT < 10 mA |
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IH < 10 mA for inductive load compatibility |
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Standards approval: immunity and robustness designed for
IEC 61000-4-x and IEC 60335-1 |
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Interfaces directly through simple resistor with the microcontroller |
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Reduces component count |
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ACST2-8SFP
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ACST2-8SB |
IT(RMS) |
2 A
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VRRM / VDRM |
800
V
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IGT max |
10 mA
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(dl/dt)c @ Tj =
125 °C |
0.5
A / ms
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dV/dt @ Tj = 125
°C |
500
V / μs
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Package |
220FPAB |
DPAK |
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