ACST10
Overvoltage protected AC switch
Datasheet - production data
Description
OUT
G
G
OUT
COM
TO-220AB
OUT
COM
TO-220FPAB
Features
Triac with overvoltage crowbar protection
The ACST10 series belongs to the ACS™/ACST
power switch family built with A.S.D. (application
specific discrete) technology. This high
performance device is suited to home appliances
or industrial systems, and drives loads up to 10 A.
This ACST10 switch has a Triac structure and a
high voltage clamping device to absorb the
inductive turn-off energy and withstand transients
such as those described in the IEC 61000-4-5
standard. The ACST1010-7 needs a low gate
current to be activated (IGT < 10 mA) and still
shows a high noise immunity complying with IEC
61000-4-4 standard. The ACST1035-7 offers a
high static dV/dt immunity of 2 kV/µs minimum.
Low IGT (< 10 mA) or high immunity
(IGT < 35 mA) version
Figure 1. Functional diagram
High noise immunity: static dV/dt > 2000 V/µs
OUT
Provides UL certified insulation rated at
2000 VRMS
Benefits
Enables equipment to meet IEC 61000-4-5
G
High off-state reliability with planar technology
Need no external overvoltage protection
COM
Reduces the power passive component count
Table 1. Device summary
High immunity against fast transients
described in IEC 61000-4-4 standards
Applications
AC mains static switching in appliance and
industrial control systems
Symbol
Value
Unit
IT(RMS)
10
A
VDRM/VRRM
700
V
IGT
10 or 35
mA
Drive of medium power AC loads such as:
– Universal motor of washing machine drum
– Compressor for fridge or air conditioner
September 2016
This is information on a product in full production.
DocID15237 Rev 4
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www.st.com
Characteristics
1
ACST10
Characteristics
Table 2. Absolute ratings (limiting values)
Symbol
IT(RMS)
ITSM
I2
t
Parameter
Unit
10
A
TO-220AB
Tc = 105 °C
TO-220FPAB
Tc = 84 °C
F = 60 Hz
tp = 16.7 ms
105
A
F = 50 Hz
tp = 20 ms
100
A
tp = 10 ms
66
A2s
Tj = 125 °C
100
A/µs
On-state RMS current (full sine wave)
Non repetitive surge peak on-state current
Tj initial = 25 °C, (full cycle sine wave)
Value
2
I t for fuse selection
dI/dt
Critical rate of rise on-state current
IG = 2 x IGT, (tr 100 ns)
VPP
Non repetitive line peak pulse voltage (1)
Tj = 25 °C
2
kV
Average gate power dissipation
Tj = 125 °C
0.1
W
PGM
Peak gate power dissipation (tp = 20 µs)
Tj = 125 °C
10
W
IGM
Peak gate current (tp = 20 µs)
Tj = 125 °C
1.6
A
Tstg
Storage temperature range
-40 to +150
°C
Tj
Operating junction temperature range
-40 to +125
°C
Tl
Maximum lead solder temperature during 10 ms (at 3 mm from case)
260
°C
Insulation RMS voltage (60 seconds)
2000
V
PG(AV)
VINS
F = 120 Hz
TO-220FPAB
1. According to test described in IEC 61000-4-5 standard and Figure 17
Table 3. Electrical characteristics
Value
Symbol
Test conditions
Quadrant
Tj
Unit
ACST1010-7
ACST1035-7
10
35
IGT(1)
VOUT = 12 V, RL = 33
I - II - III
25 °C
MAX.
VGT
VOUT = 12 V, RL = 33
I - II - III
25 °C
MAX.
1.0
V
VGD
VOUT = VDRM, RL = 3.3
I - II - III
125 °C
MIN.
0.2
V
25 °C
MAX.
30
50
mA
25 °C
MAX.
50
70
mA
125 °C
MIN.
200
2000
V/µs
125 °C
MIN.
IH
(2)
IL
IOUT = 500 mA
IG = 1.2 x IGT
I - II - III
dV/dt(2) VOUT = 67 % VDRM, gate open
(dI/dt)c(2)
(dV/dt)c = 15 V/µs
4.4
A/ms
Without snubber
VCL
12
ICL = 0.1 mA, tp = 1 ms
25 °C
MIN.
1. Minimum IGT is guaranteed at 5% of IGT max
2. For both polarities of OUT pin referenced to COM pin
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V
ACST10
Characteristics
Table 4. Static characteristics
Symbol
Test conditions
Value
Unit
VTM(1)
IOUT = 14.1 A, tp = 500 µs
Tj = 25 °C
Max.
1.5
V
VT0(1)
Threshold voltage
Tj = 125 °C
Max.
0.9
V
Rd(1)
Dynamic resistance
Tj = 125 °C
Max.
35
m
IDRM
IRRM
Tj = 25 °C
Max.
20
µA
VOUT = VDRM/ VRRM
Tj = 125 °C
Max.
1.2
mA
Value
Unit
TO-220AB
1.7
°C/W
TO-220FPAB
3.5
°C/W
TO-220AB
TO-220FPAB
60
°C/W
1. For both polarities of OUT pin referenced to COM pin
Table 5. Thermal characteristics
Symbol
Parameter
Rth(j-c)
Junction to case (AC)
Rth(j-a)
Junction to ambient
Figure 2. Maximum power dissipation vs. RMS
on-state current (full cycle)
Figure 3. On-state RMS current vs. case
temperature (full cycle)
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Characteristics
ACST10
Figure 4. On-state RMS current vs. ambient
temperature (free air convection full cycle)
Figure 5. Relative variation of thermal
impedance vs. pulse duration
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Figure 6. On-state characteristics
(maximal values)
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Figure 7. Surge peak on-state current vs.
number of cycles
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Figure 9. Relative variation of gate triggering
current (IGT) and gate triggering voltage (VGT)
vs. junction temperature
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Figure 8. Non repetitive surge peak on-state
current for a sinusoidal pulse
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DocID15237 Rev 4
ACST10
Characteristics
Figure 10. Relative variation of holding (IH) and
latching current (IL) vs. junction temperature
(typical values)
Figure 11. Relative variation of critical rate of
decrease of main current (di/dt)c vs. (dV/dt)c
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Figure 12. Relative variation of critical rate of
decrease of main current (di/dt)c vs. junction
temperature
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Figure 13. Relative variation of static dV/dt vs.
junction temperature
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Figure 14. Relative variation of maximum clamping voltage VCL vs. junction
temperature (minimum values)
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Application information
ACST10
2
Application information
2.1
Typical application description
The ACST10 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
ACST10 switch is able to drive an inductive load up to 10 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 ACST1010-7 can be driven directly by an MCU
through a simple gate resistor as shown Figure 15.
Figure 15. Compressor control – typical diagram
Compressor
Compressor
AC Mains
AC Mains
2
PTC
Electronic
starter
1
logical circuitry
PTC
ACST
Start
switch
3
ACST
ACST
Run
switch
Electronic
thermostat
ACST
Rg
Power supply
Gate
Driver
Power supply
Compressor with integrated e-starter
6/14
Rg
Rg
Gate
Driver
Compressor with external electronic drive
DocID15237 Rev 4
ACST10
Application information
Figure 16. Universal drum motor control – typical diagram
Universal motor
Stator
Rotor
12V
AC Mains
Motor direction
setting
MCU
Speed motor
regulation
ACST
Rg
Vcc
MCU
2.2
AC line transient voltage ruggedness
In comparison with standard Triacs, which needs additional protection components against,
the ACST10 is self-protected against overvoltage, specified by the new parameter VCL. The
ACST10 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 17 represents the ACST10 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 ACST10 folds back safely to the on state as shown in Figure 18. The
ACST10 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.
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Application information
ACST10
Figure 17. Overvoltage ruggedness test circuit for resistive and inductive loads for
IEC 61000-4-5 standards
R = 8 Ω, L = 4 µH, VPP = 2 kV
Surge generator
2kV surge
Rgene
Model of the load
Filtering unit
R
L
ACST10
AC Mains
Rg
Figure 18. Typical current and voltage waveforms across the ACST10 during
IEC 61000-4-5 standard test
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ACST10
3
Package information
Package information
Epoxy meets UL94, V0
Recommended torque: 0.4 to 0.6 N·m
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
3.1
TO-220AB package information
Figure 19. TO-220AB package outline
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1. Resin gate position accepted in one of the two positions or in the symmetrical opposites.
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Package information
ACST10
Table 6. TO-220AB package mechanical data
Dimensions
Ref.
Inches(1)
Millimeters
Typ.
Min.
Max.
A
4.40
b
Min.
Max.
4.60
0.1732
0.1811
0.61
0.88
0.0240
0.0346
b1
1.14
1.70
0.0449
0.0669
c
0.48
0.70
0.0189
0.0276
D
15.25
15.75
0.6004
0.6201
D1
1.27
Typ.
0.0500
E
10
10.40
0.3937
0.4094
e
2.40
2.70
0.0945
0.1063
e1
4.95
5.15
0.1949
0.2028
F
1.23
1.32
0.0484
0.0520
H1
6.20
6.60
0.2441
0.2598
J1
2.40
2.72
0.0945
0.1071
L
13
14
0.5118
0.5512
L1
3.50
3.93
0.1378
0.1547
L20
16.40
0.6457
L30
28.90
1.1378
Diam.P
3.75
3.85
0.1476
0.1516
Q
2.65
2.95
0.1043
0.1161
1. Values in inches are converted from mm and rounded to 4 decimal digits.
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ACST10
3.2
Package information
TO-220FPAB package information
Figure 20. TO-220FPAB package outline
DocID15237 Rev 4
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Package information
ACST10
Table 7. TO-220FPAB package mechanical data
Dimensions
Ref.
Inches(1)
Millimeters
Typ.
Min.
Max.
A
4.4
B
Min.
Max.
4.6
0.1732
0.1811
2.5
2.7
0.0984
0.1063
D
2.5
2.75
0.0984
0.1083
E
0.45
0.70
0.0177
0.0276
F
0.75
1
0.0295
0.0394
F1
1.15
1.70
0.0453
0.0669
F2
1.15
1.70
0.0453
0.0669
G
4.95
5.2
0.1949
0.2047
G1
2.4
2.7
0.0945
0.1063
H
10
10.40
0.3937
0.4094
L2
16
Typ.
0.6299
L3
28.6
30.6
1.1260
1.2047
L4
9.8
10.6
0.3858
0.4173
L5
2.9
3.6
0.1142
0.1417
L6
15.9
16.4
0.6260
0.6457
L7
9
9.3
0.3543
0.3661
Dia.
3
3.2
0.1181
0.1260
1. Values in inches are converted from mm and rounded to 4 decimal digits.
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ACST10
4
Ordering information
Ordering information
Figure 21. Ordering information scheme
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Table 8. Ordering information
Order code
Marking
ACST1010-7T
Package
Weight
Base qty
Packing mode
TO-220AB
2.3 g
50
Tube
TO-220FPAB
2.3 g
50
Tube
TO-220AB
2.3 g
50
Tube
TO-220FPAB
2.3 g
50
Tube
ACST10107
ACST1010-7FP
ACST1035-7T
ACST10357
ACST1035-7FP
5
Revision history
Table 9. Document revision history
Date
Revision
02-Dec-2008
1
First issue
13-Apr-2009
2
Updated ECOPACK statement. Reformatted for consistency with
other datasheets in this product class.
01-Jul-2010
3
Updated order code in Table 3.
4
Updated Features in cover page and Table 2.
Updated Figure 8, Figure 11, Figure 18, Figure 14 and Figure 10.
Updated Section 2.2.
Updated Chapter 3: Package information.
19-Sep-2016
Changes
DocID15237 Rev 4
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ACST10
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