ACST Series Flyer Datasheet by STMicroelectronics

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ACST series TRIACs
Overvoltage-protected
ACswitches
Need to control AC mains power loads with high electrical immunity?
www.st.com/acswitch
ACST overvoltage protected
series is the answer. Line
conducted surges and longer
duration overvoltages are
common due to the increasing
load on the power grid. The new
ACST310-8 have been designed
to control AC motors and
actuators and overcome higher
surges than standard TRIACs.
The protecting passive networks
like MOV and snubbers can be
reduced.
The ACST series has 10 and
35 mA gate currents. The power
supply to drive the gate can
be simpler than with higher
gate current TRIACs and relays.
Appliance circuit PCBs will be
smaller and load control more
rugged.
KEY FEATURES
Auto-protected against AC power mains
overvoltage/surges
2 ranges of IGT
30/35 mA rugged control
10 mA MCU driven
Operating junction temp up to 150°C
Symmetrical blocking voltage up to 800 V
2 to 16 A current range
KEY BENEFITS
Enables compliance with IEC 61000-4-4
and -4-5 EMC standards
No need of additional RC network and
MOV
Controls AC loads from oven fans to
washing machines drum motors
Mains transients immunity in equipment
plugged in 24/7
KEY APPLICATIONS
Washers/dryers
ACST1635: drum motor
ACST1010: heater
ACST310: pump
ACST210: valve
Refrigerators
HVAC and fans
Kitchen top appliances
Smart home actuators and AC grid/
load controls
Commercial printer heating elements
Industrial auxiliary motor and heater
controls
VISUAL ZONE
ACST Series
Q ~=3-=- ‘11 "N. no coosm Ne aufimsnmc
ACST - SAFEST AC SWITCH
Solid state building blocks
Part Number
Package suffix IT(RMS)
Max. (A)
VDRM / VRRM
Max. (V)
IGT
Max. (mA)
dV/dt (1)
Min. (V/µs)
(dI/dt)C (1)
Min. (A/ms) TJ Max (°C)
DPAK D²PAK TO-220AB TO-220AB
Full pack
Logic level
ACST210-8 B FP 2 800 10 500 0.5 125
ACST310-8 BFP 3 800 10 500 1125
ACST410-8 B FP 4 800 10 500 2 125
ACST610-8 G T FP 6 800 10 500 3.5 125
ACST1010-7 G FP 10 700 10 200 4 125
ACST1210-7 G T 12 700 10 200 5 125
Standard gate
ACST435-8 B FP 4 800 35 1000 5 125
ACST830-8 G T FP 8 800 30 2000 8 125
ACST1035-8 FP 10 800 35 4000 / 2000 7.5 / 5 150
ACST1235-8 FP 12 800 35 4000 / 2000 9 / 6 150
ACST1635-8 FP 16 800 35 1000 / 300 7 / 4 150
Note 1: at TJ MAX or 125°C/150°C
One of semiconductors’ primary missions
is to reliably control AC power. ST’s
overvoltage-protected ACST series has
nearly an infinite switching cycle lifetime
in good designs/uses, lower gate drive
power consumption, and beneficial absence
of inductive turn-off sparks in flammable
environments (fridge compressors).
But there are more reasons to choose ACST
over relays or standard TRIACs: one is a
trade-off between the gate low current drive
capability and the switch-off capability.
To simplify, let’s say that more sensitive gate
devices are always prone to sticky on-states
and are more difficult to switch off at zero
current crossing. This is where the ACST
research led by ST has designed a device
capable of turning-off big inductive loads
even with 10 mA sensitive, MCU-driven
gates.
The other unbeatable characteristic of
ACST is their ability to resist turn-on at high
transient
dV/dt; a fundamental safety feature for all AC
mains actuators. Also, the lifetime protection
capability of ACSTs is to fold back safely in
case of overvoltage. All in all, easy and safe
load control features are ensured.
© STMicroelectronics - November 2017 - Printed in United Kingdom - All rights reserved
The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies
All other names are the property of their respective owners
For more information on ST products and solutions, visit www.st.com/acswitch
Order code: FLACST1117

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