■ High off-state reliability with planar technology
■ Needs no external overvoltage 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 such as:
– Universal motor of washing machine drum
– Compressor for fridge or air conditioner
OUT
G
OUT
COM
TO-220AB
ACST610-8T
OUT
G
COM
TO-220FPAB
ACST610-8FP
OUT
D²PAK
ACST610-8G
ACST610-8R
Figure 1.Functional diagram
OUT
G
OUT
COM
G
OUT
COM
I²PAK
Description
The ACST6 series belongs to the ACS™/ACST
power switch family built with A.S.D.
specific discrete) technology. This high
performance device is suited to home appliances
or industrial systems, and drives loads up to 6 A.
This ACST6 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 ACST610 needs
only low gate current to be activated
(I
< 10 mA) and still shows a high noise
GT
immunity complying with IEC standards such as
IEC 61000-4-4 (fast transient burst test).
July 2010Doc ID 7297 Rev 101/15
®
(application
G
COM
Table 1.Device summary
SymbolValueUnit
I
T(RMS)
V
DRM/VRRM
I
GT
6A
800V
10mA
TM: ACS is a trademark of STMicroelectronics.
®: A.S.D. is a registered trademark of
STMicroelectronics
www.st.com
15
CharacteristicsACST6
1 Characteristics
Table 2.Absolute ratings (limiting values)
SymbolParameterValueUnit
TO-220FPAB T
TO-220AB/
2
I
T(RMS)
I
TSM
I
dI/dt
V
P
G(AV)
P
I
GM
T
V
INS(RMS)
On-state rms current (full sine wave)
Non repetitive surge peak on-state current Tj
initial = 25 °C, ( full cycle sine wave)
The ACST6 device has been designed to control medium power load, such as AC motors in
home appliances. Thanks to its thermal and turn off commutation performances, the ACST6
switch is able to drive an inductive load up to 6 A with no turn off additional snubber. It also
provides high thermal performances in static and transient modes such as the compressor
inrush current or high torque operating conditions of an AC motor. Thanks to its low gate
triggering current level, the ACST6 can be driven directly by an MCU through a simple gate
resistor as shown Figure 16 and Figure 17.
Figure 16. Compressor control – typical diagram
Compressor
AC Mains
PTC
ACST
ACST
Power supply
Compressor with integrated e-starter
Electronic
thermostat
Gate
Driver
2
1
3
Rg
Electronic
starter
logical circuitry
Compressor
AC Mains
PTC
ACST
Run
ACST
switch
Rg
Gate
Power supply
Driver
Compressor with external electronic drive
Start
switch
Rg
6/15 Doc ID 7297 Rev 10
ACST6Application information
Figure 17. Universal drum motor control – typical diagram
Universal motor
Stator
AC Mains
Speed motor
Rotor
ACST
regulation
Vcc
2.2 AC line transient voltage ruggedness
12V
Motor direction
setting
MCU
Rg
MCU
In comparison with standard Triacs, which are not robust against surge voltage, the ACST6
is self-protected against over-voltage, specified by the new parameter V
. The ACST6
CL
switch can safely withstand AC line transient voltages either by clamping the low energy
spikes, such as inductive spikes at switch off, or by switching to the on state (for less than 10
ms) to dissipate higher energy shocks through the load. This safety feature works even with
high turn-on current ramp up.
The test circuit of Figure 18 represents the ACST6 application, and is used to stress the
ACST switch according to the IEC 61000-4-5 standard conditions. With the additional effect
of the load which is limiting the current, the ACST switch withstands the voltage spikes up to
2 kV on top of the peak line voltage. The protection is based on an overvoltage crowbar
technology. The ACST6 folds back safely to the on state as shown in Figure 19. The ACST6
recovers its blocking voltage capability after the surge and the next zero current crossing.
Such a non repetitive test can be done at least 10 times on each AC line voltage polarity.
Doc ID 7297 Rev 107/15
Application informationACST6
Figure 18. Overvoltage ruggedness test circuit for resistive and inductive loads for
IEC 61000-4-5 standards
R = 18 , L = 2 µH, Vsurge = 2 kV
Rg = 220ΩΩ
Surge generator
2kV surge
Rgene
Filtering unit
Model of the load
R
L
AC Mains
Figure 19. Typical current and voltage waveforms across the ACST6 during
IEC 61000-4-5 standard test
V
peak=VCL
1.2/50 µs voltage surge
V
0
ACST6
Rg
I
= 120 A
peak
I
8/15 Doc ID 7297 Rev 10
8/20 µs current surge
0
dI/dt = 150 A/µs
ACST6Ordering information scheme
3 Ordering information scheme
Figure 20. Ordering information scheme
ACS T 6 10 - 8 G TR
AC switch
Topology
T = Triac
On-state rms current
6 = 6 A
Triggering gate current
10 = 10 mA
Repetitive peak off-state voltage
8 = 800 V
Package
FP = TO-220FPAB
T = TO-220AB
R = I²PAK
G = D²PAK
Delivery mode
TR = Tape and reel
Blank = Tube
Doc ID 7297 Rev 109/15
Package informationACST6
4 Package information
●Epoxy meets UL94, V0
●Cooling method: by conduction (C)
●Recommended torque value (TO220AB, TO220FPAB): 0.4 to 0.6 N·m
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com
ECOPACK
Table 6.TO-220AB dimensions
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
.
Dimensions
Ref.
MillimetersInches
Min.Max.Min.Max.
A4.404.600.1730.181
C1.231.320.0480.051
H2
Dia
A
C
D2.402.720.0940.107
E0.490.700.0190.027
L2
F2
F1
L5
L6
L9
L4
F
G1
L7
F0.610.880.0240.034
F11.141.700.0440.066
F21.141.700.0440.066
G4.955.150.1940.202
D
G12.402.700.0940.106
H21010.400.3930.409
L216.4 typ.0.645 typ.
M
E
L413140.5110.551
L52.652.950.1040.116
G
L615.2515.750.6000.620
L76.206.600.2440.259
L93.503.930.1370.154
10/15 Doc ID 7297 Rev 10
M2.6 typ.0.102 typ.
Diam.3.753.850.1470.151
ACST6Package information
Table 7.TO-220FPAB dimensions
Dimensions
Ref.
MillimetersInches
Min.Max.Min.Max.
A4.44.60.1730.181
A
H
B
B2.52.70.0980.106
D2.52.750.0980.108
E0.450.700.0180.027
Dia
L6
L2
L3
L5
F1
L4
F2
F
G1
G
D
L7
E
F0.7510.0300.039
F11.151.700.0450.067
F21.151.700.0450.067
G4.955.200.1950.205
G12.42.70.0940.106
H1010.40.3930.409
L216 Typ.0.63 Typ.
L328.630.61.1261.205
L49.810.60.3860.417
L52.93.60.1140.142
L615.916.40.6260.646
L79.009.300.3540.366
Dia.3.003.200.1180.126
Doc ID 7297 Rev 1011/15
Package informationACST6
Table 8.D
L2
L
L3
2
PAK dimensions
E
A1
B2
B
G
* FLAT ZONE NO LESSTHAN 2mm
Dimensions
Ref.
MillimetersInches
Min.Max.Min.Max.
A4.404.600.1730.181
A
A12.492.690.0980.106
C2
A20.030.230.0010.009
B0.700.930.0270.037
D
B21.141.700.0450.067
C0.450.600.0170.024
C21.231.360.0480.054
C
R
D8.959.350.3520.368
E10.0010.400.3930.409
A2
G4.885.280.1920.208
L15.0015.850.5900.624
M
*
V2
L21.271.400.0500.055
L31.401.750.0550.069
M2.403.200.0940.126
R0.40 typ.0.016 typ.
V20°8°0°8°
Figure 21. Footprint (dimensions in mm)
16.90
10.30
8.90
3.70
5.08
1.30
12/15 Doc ID 7297 Rev 10
ACST6Package information
Table 9.I2PAK double track dimensions
Dimensions
Ref.
MillimetersInches
Min.Max.Min.Max.
A
E
L2
L3
L
Cropping
direction
C2
D
A4.404.600.1730.181
A12.492.690.0980.106
B0.700.930.0270.037
B21.141.700.0450.067
C0.450.600.0180.024
C21.231.360.0480.053
A1
G
B2
B
C
D8.959.350.3520.368
E1010.400.3940.409
G4.885.280.1920.208
L16.7017.50.6570.689
L21.271.400.0500.055
L313.8214.420.5440.568
Doc ID 7297 Rev 1013/15
Ordering informationACST6
5 Ordering information
Table 10.Ordering information
Order codeMarkingPackageWeightBase QtyPacking mode
ACST610-8FP
ACST610-8GD2PAK1.5 g50Tube
ACST610-8GTRD
ACST6108
ACST610-8RI
ACST610-8TTO-220AB1.5 g50Tube
6 Revision history
Table 11.Document revision history
DateRevisionChanges
Jan-20027FPrevious issue.
09-May-20058Layout update. No content change.
18-Dec-20099
01-Jul-201010Updated Figure 20.
TO-220FPAB2.4 g50Tube
2
PAK1.5 g1000Tape and reel
2
PAK2.3 g50Tube
Document structure and parameter presentation revised for
consistency with other ACST documents. No technical changes.
Order codes updated.
14/15 Doc ID 7297 Rev 10
ACST6
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