STMICROELECTRONICS ACST6

ACST6
Overvoltage protected AC switch
Features
OUT
■
Triac with overvoltage protection
■
Low IGT (< 10 mA)
■
TO-220FPAB insulated package: 1500 V rms
G
OUT
COM
G
OUT
COM
Benefits
■
Enables equipment to meet IEC 61000-4-5
■
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
TO-220AB
ACST610-8T
TO-220FPAB
ACST610-8FP
OUT
OUT
G
OUT
COM
G
COM
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
D²PAK
ACST610-8G
Figure 1.
I²PAK
ACST610-8R
Functional diagram
OUT
Description
The ACST6 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 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
(IGT < 10 mA) and still shows a high noise
immunity complying with IEC standards such as
IEC 61000-4-4 (fast transient burst test).
G
COM
Table 1.
Device summary
Symbol
Value
Unit
IT(RMS)
6
A
VDRM/VRRM
800
V
IGT
10
mA
TM: ACS is a trademark of STMicroelectronics.
®: A.S.D. is a registered trademark of
STMicroelectronics
December 2009
Doc ID 7297 Rev 9
1/15
www.st.com
15
Characteristics
ACST6
1
Characteristics
Table 2.
Absolute ratings (limiting values)
Symbol
IT(RMS)
ITSM
I2t
Parameter
Value
Unit
TO-220FPAB
Tc = 92 °C
TO-220AB/
D²PAK / I²PAK
Tc = 106 °C
D²PAK with
1 cm2 copper
Tamb = 62 °C
1.5
Non repetitive surge peak on-state current F = 60 Hz
Tj initial = 25 °C, ( full cycle sine wave)
F = 50 Hz
tp = 16.7 ms
47
A
tp = 20 ms
45
A
I2t for fuse selection
tp = 10 ms
13
A2 s
Tj = 125 °C
100
A/µs
On-state rms current (full sine wave)
6
A
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 plastic case)
260
°C
1500
V
Value
Unit
PG(AV)
F = 120 Hz
TO-220FPAB
VINS(RMS) Insulation rms voltage
1. According to test described in IEC 61000-4-5 standard and Figure 19.
Table 3.
Symbol
Electrical characteristics
Test conditions
Quadrant
Tj
IGT(1)
VOUT = 12 V, RL = 33 Ω
I - II - III
25 °C
MAX.
10
mA
VGT
VOUT = 12 V, RL = 33 Ω
I - II - III
25 °C
MAX.
1.0
V
VGD
VOUT = VDRM, RL = 3.3 kΩ
I - II - III
125 °C
MIN.
0.2
V
IH(2)
IOUT = 500 mA
25 °C
MAX.
25
mA
IL
IG = 1.2 x IGT
I - III
25 °C
MAX.
30
mA
IG = 1.2 x IGT
II
25 °C
MAX.
40
mA
VOUT = 67 % VDRM, gate open
125 °C
MIN.
500
V/µs
(dV/dt)c = 15 V/µs
125 °C
MIN.
3.5
A/ms
ICL = 0.1 mA, tp = 1 ms
25 °C
MIN.
850
V
IL
dV/dt
(2)
(2)
(dI/dt)c
VCL
1. Minimum IGT is guaranteed at 5% of IGT max
2. For both polarities of OUT pin referenced to COM pin
2/15
Doc ID 7297 Rev 9
ACST6
Characteristics
Table 4.
Static characteristics
Symbol
VTM(1)
Test conditions
Value
Unit
1.4
IOUT = 2.1 A, tp = 500 µs
IOUT = 8.5 A, tp = 500 µs
Tj = 25 °C
MAX.
V
1.7
VT0(1)
Threshold voltage
Tj = 125 °C
MAX.
0.9
V
Rd(1)
Dynamic resistance
Tj = 125 °C
MAX.
80
mΩ
IDRM
IRRM
Tj = 25 °C
MAX.
20
µA
VOUT = VDRM/ VRRM
Tj = 125 °C
MAX.
500
µA
Value
Unit
1. For both polarities of OUT pin referenced to COM pin
Table 5.
Thermal resistances
Symbol
Parameter
Junction to ambient
Rth(j-a)
Junction to ambient (soldered on 1 cm2 copper pad)
Junction to case for full cycle sine wave conduction
Rth(j-c)
Figure 2.
8
Maximum power dissipation versus Figure 3.
rms on-state current
P(W)
α = 180°
7
7
180°
TO-220AB
TO-220FPAB
60
I²PAK
65
D²PAK
45
°C/W
TO-220FPAB
4.25
TO-220AB
D²PAK , I²PAK
2.5
°C/W
On-state rms current versus case
temperature (full cycle)
IT(RMS)(A)
α = 180°
6
TO-220FPAB
6
5
TO-220AB
D²PAK
I²PAK
5
4
4
3
3
2
2
1
1
IT(RMS)(A)
0
0
1
2
3
4
5
TC(°C)
0
6
0
Doc ID 7297 Rev 9
25
50
75
100
125
3/15
Characteristics
Figure 4.
ACST6
On-state rms current versus
ambient temperature (free air
convection, full cycle)
Figure 5.
IT(RMS)(A)
2.5
1.0E+00
1.5
K = [Zth / Rth]
Zth(j-c)
α=180°
D2PAK with
copper
surface = 1
cm2
2.0
Relative variation of thermal
impedance versus pulse duration
Zth(j-a)
TO-220AB
D²PAK
I²PAK
TO-220FPAB
TO220AB
1.0E-01
TO-220FPAB
I2PAK
1.0
0.5
Ta(°C)
0.0
0
25
Figure 6.
3.0
50
75
100
125
Relative variation of gate trigger
current (IGT) and voltage (VGT)
versus junction temperature
IGT, VGT[Tj] / IGT, VGT[Tj = 25 °C]
(typical values)
tp(s)
1.0E-02
1.0E-03
Figure 7.
2.5
1.0E-01
1.0E+01
1.0E+03
Relative variation of holding
current (IH) and latching current (IL)
versus junction temperature
IH, IL[Tj] / IH, IL[Tj = 25 °C]
(typical values)
IGT Q3
2.5
2.0
IGT Q1-Q2
2.0
1.5
1.5
1.0
VGT Q1-Q2-Q3
1.0
IL
0.5
0.5
Tj (°C)
0.0
-50
-25
Figure 8.
50
0
25
50
75
100
125
Surge peak on-state current
versus number of cycles
IH
0.0
-50
Figure 9.
ITSM(A)
1000
Tj(°C)
-25
0
25
50
75
100
125
Non repetitive surge peak on-state
current and corresponding value of
I2t versus sinusoidal pulse width
ITSM(A), I²t (A²s)
dl /dt limitation: 100 A / µs
Tj initial = 25 °C
t = 20 ms
40
One cycle
ITSM
100
Non repetitive
Tj initial = 25 °C
30
20
I²t
Repetitive
TC =106 °C
10
10
Number of cycles
tp(ms)
Number of cycles
0
1
4/15
10
100
1000
1
0.01
Doc ID 7297 Rev 9
0.10
1.00
10.00
ACST6
Characteristics
Figure 10. On-state characteristics
(maximum values)
Figure 11. Relative variation of critical rate of
decrease of main current (dI/dt)c
versus junction temperature
ITM(A)
100
8
(dl/dt)c [Tj] / (dl/dt)c[Tj = 125 °C]
7
6
5
10
4
Tjmax:
Vto = 0.90 V
Rd = 80 mΩ
3
2
Tj = 125 °C
Tj = 25 °C
1
VTM(V)
1
0
1
2
3
4
25
5
Figure 12. Relative variation of static dV/dt
immunity versus junction
temperature (gate open)
6
Tj(°C)
0
50
75
100
125
Figure 13. Relative variation of leakage
current versus junction
temperature
IDRM/IRRM [Tj; VDRM / VRRM] / IDRM/IRRM[Tj = 125 °C; 800 V]
dV/dt [Tj] / dV/dt [Tj = 125 °C]
1.0E+00
VD = VR = 536 V
VDRM = VRRM = 800V
5
Different blocking voltages
VDRM = VRRM = 600 V
1.0E-01
4
3
1.0E-02
2
VDRM = VRRM = 200 V
1
Tj(°C)
0
25
50
75
100
Figure 14. Relative variation of clamping
voltage (VCL) versus junction
temperature (minimum values)
1.15
Tj(°C)
1.0E-03
125
25
50
75
100
125
Figure 15. Thermal resistance junction to
ambient versus copper surface
under tab
80
VCL[Tj] / VCL [Tj = 25 °C]
Rth(j-a)(°C/W)
1.10
60
1.05
50
D²PAK
Printed circuit board FR4,
copper thickness = 35 µm
70
40
1.00
30
0.95
20
0.90
10
Tj(°C)
-50
-25
0
25
50
75
100
SCU(cm²)
0
0.85
125
0
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10
15
20
25
30
35
40
5/15
Application information
ACST6
2
Application information
2.1
Typical application description
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
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
Rg
Power supply
Gate
Driver
Power supply
Compressor with integrated e-starter
6/15
Doc ID 7297 Rev 9
Rg
Gate
Driver
Compressor with external electronic drive
ACST6
Application information
Figure 17. 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 are not robust against surge voltage, the ACST6
is self-protected against over-voltage, specified by the new parameter VCL. The ACST6
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 9
7/15
Application information
ACST6
Figure 18. Overvoltage ruggedness test circuit for resistive and inductive loads for
IEC 61000-4-5 standards
R = 18 Ω, L = 2 µH, Vsurge = 2 kV
Rg = 220 Ω
Surge generator
2kV surge
Rgene
Model of the load
Filtering unit
R
L
ACST6
AC Mains
Rg
Figure 19. Typical current and voltage waveforms across the ACST6 during
IEC 61000-4-5 standard test
Vpeak = VCL
1.2/50 µs voltage surge
V
0
Ipeak = 120 A
I
8/20 µs current surge
0
dI/dt = 150 A/µs
8/15
Doc ID 7297 Rev 9
ACST6
3
Ordering information scheme
Ordering information scheme
Figure 20. Ordering information scheme
ACS T 6 10 - 8
T TR
AC switch
Topology
T = Triac
On-state rms current
6=6A
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 9
9/15
Package information
4
ACST6
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® 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.
Table 6.
TO-220AB dimensions
Dimensions
Ref.
Dia
Min.
Max.
Min.
Max.
A
4.40
4.60
0.173
0.181
C
1.23
1.32
0.048
0.051
D
2.40
2.72
0.094
0.107
E
0.49
0.70
0.019
0.027
F
0.61
0.88
0.024
0.034
F1
1.14
1.70
0.044
0.066
F2
1.14
1.70
0.044
0.066
G
4.95
5.15
0.194
0.202
G1
2.40
2.70
0.094
0.106
H2
10
10.40
0.393
0.409
C
L5
L7
L6
L2
F2
D
L9
L4
L2
F
M
G1
Inches
A
H2
F1
Millimeters
16.4 typ.
0.645 typ.
L4
13
14
0.511
0.551
L5
2.65
2.95
0.104
0.116
L6
15.25
15.75
0.600
0.620
L7
6.20
6.60
0.244
0.259
L9
3.50
3.93
0.137
0.154
E
G
M
Diam.
10/15
Doc ID 7297 Rev 9
2.6 typ.
3.75
3.85
0.102 typ.
0.147
0.151
ACST6
Package information
Table 7.
TO-220FPAB dimensions
Dimensions
Ref.
Millimeters
Inches
Min.
Max.
Min.
Max.
A
4.4
4.6
0.173
0.181
B
2.5
2.7
0.098
0.106
D
2.5
2.75
0.098
0.108
E
0.45
0.70
0.018
0.027
F
0.75
1
0.030
0.039
F1
1.15
1.70
0.045
0.067
F2
1.15
1.70
0.045
0.067
G
4.95
5.20
0.195
0.205
G1
2.4
2.7
0.094
0.106
H
10
10.4
0.393
0.409
A
B
H
Dia
L6
L2
L7
L3
L5
F1
L4
D
F2
F
L2
E
G1
G
Doc ID 7297 Rev 9
16 Typ.
0.63 Typ.
L3
28.6
30.6
1.126
1.205
L4
9.8
10.6
0.386
0.417
L5
2.9
3.6
0.114
0.142
L6
15.9
16.4
0.626
0.646
L7
9.00
9.30
0.354
0.366
Dia.
3.00
3.20
0.118
0.126
11/15
Package information
Table 8.
ACST6
D2PAK dimensions
Dimensions
Ref.
Millimeters
Inches
Min.
Max.
Min.
Max.
A
4.40
4.60
0.173
0.181
A1
2.49
2.69
0.098
0.106
A2
0.03
0.23
0.001
0.009
B
0.70
0.93
0.027
0.037
B2
1.14
1.70
0.045
0.067
C
0.45
0.60
0.017
0.024
C2
1.23
1.36
0.048
0.054
D
8.95
9.35
0.352
0.368
E
10.00
10.40
0.393
0.409
G
4.88
5.28
0.192
0.208
L
15.00
15.85
0.590
0.624
L2
1.27
1.40
0.050
0.055
L3
1.40
1.75
0.055
0.069
M
2.40
3.20
0.094
0.126
A
E
C2
L2
D
L
L3
A1
B2
R
C
B
G
A2
M
*
V2
* FLAT ZONE NO LESS THAN 2mm
R
V2
0.40 typ.
0°
8°
Figure 21. Footprint (dimensions in mm)
16.90
10.30
5.08
1.30
8.90
12/15
Doc ID 7297 Rev 9
3.70
0.016 typ.
0°
8°
ACST6
Package information
Table 9.
I2PAK double track dimensions
Dimensions
Ref.
A
E
C2
L2
L
D
Cropping
direction
L3
A1
G
C
B2
B
Doc ID 7297 Rev 9
Millimeters
Inches
Min.
Max.
Min.
Max.
A
4.40
4.60
0.173
0.181
A1
2.49
2.69
0.098
0.106
B
0.70
0.93
0.027
0.037
B2
1.14
1.70
0.045
0.067
C
0.45
0.60
0.018
0.024
C2
1.23
1.36
0.048
0.053
D
8.95
9.35
0.352
0.368
E
10
10.40
0.394
0.409
G
4.88
5.28
0.192
0.208
L
16.70
17.5
0.657
0.689
L2
1.27
1.40
0.050
0.055
L3
13.82
14.42
0.544
0.568
13/15
Ordering information
5
ACST6
Ordering information
Table 10.
Ordering information
Order code
Package
Weight
Base Qty
Packing mode
ACST610-8FP
TO-220FPAB
2.4 g
50
Tube
ACST610-8G
D2PAK
1.5 g
50
Tube
D2PAK
1.5 g
1000
Tape and reel
2PAK
2.3 g
50
Tube
TO-220AB
1.5 g
50
Tube
ACST610-8GTR
Marking
ACST6108
ACST610-8R
I
ACST610-8T
6
Revision history
Table 11.
14/15
Document revision history
Date
Revision
Changes
Jan-2002
7F
09-May-2005
8
Layout update. No content change.
18-Dec-2009
9
Document structure and parameter presentation revised for
consistency with other ACST documents. No technical changes.
Order codes updated.
Previous issue.
Doc ID 7297 Rev 9
ACST6
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Doc ID 7297 Rev 9
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