STMICROELECTRONICS ACST830-8FP

ACST8
Overvoltage protected AC switch
Features
OUT
■
Triac with overvoltage protection
■
High noise immunity: static dV/dt > 2000 V/µs
■
TO-220FPAB insulated package: 1500 V rms
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
ACST830-8T
■
TO-220FPAB
ACST830-8FP
OUT
G
COM
D²PAK
ACST830-8G
Applications
■
G
OUT
COM
AC mains static switching in appliance and
industrial control systems
Figure 1.
Functional diagram
Drive of medium power AC loads such as:
– Universal motor of washing machine drum
– Compressor for fridge or air conditioner
OUT
Description
The ACST8 series belongs to the ACS™/ ACST
power switch family built around A.S.D.®
(application specific discrete) technology. This
high performance device is suited to home
appliances or industrial systems and drives an
induction motor up to 8 A.
This ACST8 device embeds a Triac structure with
a high voltage clamping device to absorb the
inductive turn off energy and withstand line
transients such as those described in the
IEC 61000-4-5 standards.
ACST8 shows a high noise immunity complying
with IEC standards such as IEC 61000-4-4 (fast
transient burst test).
December 2009
G
COM
Table 1.
Device summary
Symbol
Value
Unit
IT(RMS)
8
A
VDRM/VRRM
800
V
IGT
30
mA
TM: ACS is a trademark of STMicroelectronics.
®: A.S.D. is a registered trademark of
STMicroelectronics
Doc ID 7463 Rev 7
1/13
www.st.com
13
Characteristics
ACST8
1
Characteristics
Table 2.
Absolute ratings (limiting values)
Symbol
Parameter
Value
Unit
8
A
TO-220FPAB
Tcase = 91 °C
TO-220AB /
D2PAK
Tcase = 105 °C
D2PAK with
1 cm2 Cu
Tamb = 43 °C
2
A
F = 50 Hz
tp = 20 ms
80
A
F = 60 Hz
tp = 16.7 ms
84
A
Thermal constraint for fuse selection
tp = 10 ms
42
A2s
Non repetitive on-state current critical rate of rise
IG = 10 mA (tr < 100 ns)
Rate period > 1 mn
100
A/µs
VPP (1)
Non repetitive line peak pulse voltage
Tj = 25 °C
2
kV
PG(AV)
Average gate power dissipation
Tj = 125 °C
0.1
W
PGM
Peak gate power dissipation (tp = 20 ms)
Tj = 125 °C
10
W
IGM
Peak gate current (tp = 20 ms)
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 soldering temperature during 10 s
260
°C
1500
V
IT(RMS)
On-state rms current (full sine wave)
Non repetitive surge peak on-state
current Tj initial = 25 °C, full cycle sine
wave
ITSM
I 2t
dI/dt
VINS(RMS) Insulation rms voltage
TO-220FPAB
1. According to test described in IEC 61000-4-5 standard and Figure 18.
Table 3.
Electrical characteristics per switch
Symbol
Test conditions
Quadrant
Tj
Unit
IGT(1)
VOUT = 12 V, RL = 33 Ω
I - II - III
25 °C
Max
30
mA
VGT
VOUT = 12V, 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
25 °C
Max
30
mA
25 °C
Max
50
mA
VOUT = 67% VDRM, gate open
125 °C
Min
2000
V/µs
Without snubber
125 °C
Min
8
A/ms
ICL = 0.1 mA, tp = 1 ms
25 °C
Min
850
V
IH
(2)
IOUT = 500 mA
IL
dV/dt
IG = 1.2 x IGT
(2)
(2)
(dI/dt)c
VCL
I - II - III
1. Minimum IGT is guaranteed at 5% of IGT(Max)
2. For either positive or negative polarity of OUT pin with reference to COM pin
2/13
Value
Doc ID 7463 Rev 7
ACST8
Characteristics
Table 4.
Static characteristics
Symbol
Test conditions
Value
Unit
VTM
ITM = 11.3 A tp = 500 µs
Tj = 25 °C
Max
1.5
V
VTO
Threshold voltage
Tj = 125 °C
Max
0.9
V
RD
Dynamic resistance
Tj = 125 °C
Max
50
mΩ
IDRM
IRRM
20
µA
VOUT = VDRM / VRRM
1
mA
Tj = 25 °C
Table 5.
Max
Tj = 125 °C
Thermal resistances
Symbol
Parameter
Value
Junction to ambient
TO-220FPAB
TO-220AB
60
Junction to ambient (soldered on 1 cm2 copper pad)
D2PAK
45
TO-220FPAB
3.6
Rth(j-a)
Rth(j-c)
Junction to case (AC)
Figure 2.
TO-220AB, D2PAK
Maximum power dissipation versus Figure 3.
on-state rms current
P(W)
°C/W
2
On-state rms current versus case
temperature (full cycle)
IT(RMS)(A)
10
9
α=180 °
9
Unit
α=180°
TO-220AB
D2PACK
8
8
TO-220FPAB
7
7
6
6
5
5
4
4
3
3
2
2
180°
TC(°C)
1
IT(RMS)(A)
1
0
0
0
1
2
3
4
5
6
7
8
0
Doc ID 7463 Rev 7
25
50
75
100
125
3/13
Characteristics
Figure 4.
ACST8
On-state rms current versus
ambient temperature (free air
convection, fulle cycle)
Figure 5.
Relative variation of thermal
impedance versus pulse duration
K=[Zth/Rth]
IT(RMS)(A)
1.0E+00
3.0
TO-220AB
α=180°
Zth(j-c)
Zth(j-a)
D2PAK
Copper surface
= 1cm2
2.5
TO-220FPAB
2.0
TO-220
1.0E-01
1.5
1.0
TO-220AB
TO-220FPAB
0.5
Tamb(°C)
tp(s)
0.0
0
25
Figure 6.
50
75
100
125
Relative variation of gate trigger
current (IGT) and voltage (VGT)
versus junction temperature
1.0E-02
1.0E-03
Figure 7.
1.0E-01
1.0E+00
1.0E+01
1.0E+02
1.0E+03
Relative variation of holding
current (IH) and latching current (IL)
versus junction temperature
IH, IL [T j] / IH, IL [T j=25 °C]
IGT, VGT[T j] / IGT, VGT[T j=25 °C]
3.0
1.0E-02
2.5
IGT Q3
Typical values
2.5
2.0
IGT Q1-Q2
2.0
1.5
1.5
1.0
1.0
VGT Q1-Q2-Q3
IL
0.5
0.5
0.0
-50
-25
Figure 8.
90
IH
Tj(°C)
Tj(°C)
0.0
0
25
50
75
100
125
-50
-25
Surge peak on-state current versus Figure 9.
number of cycles
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)
ITSM(A)
1000
Tj initial=25 °C
80
t=20ms
70
One cycle
Non repetitive
Tj initial=25 °C
60
ITSM
dI/dt limitation: 100 A/µs
100
50
40
I²t
30
10
Repetitive
TC=105 °C
20
sinusoidal pulse
with width tP < 10 ms
10
Number of cycles
0
1
4/13
10
100
1000
1
0.01
Doc ID 7463 Rev 7
tP(ms)
0.10
1.00
10.00
ACST8
Characteristics
Figure 10. On-state characteristics (maximum Figure 11. Relative variation of critical rate of
values)
decrease of main current (dI/dt)c
versus junction temperature
ITM (A)
(dI/dt)c[Tj] / (dI/dt)c[Tj=125°C]
100
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
10
Tj=125 °C
Tj max :
Vto = 0.90 V
Rd = 50 mΩ
VTM (V)
Tj=25 °C
1
0
1
2
3
4
25
5
Figure 12. Relative variation of static dV/dt
immunity versus junction
temperature (gate open)
dV/dt[Tj] / dV/dt[Tj=125°C]
Tj(°C)
50
125
IDRM/IRRM [Tj;V DRM/ VRRM]/IDRM/IRRM [Tj=125°C; 8 00V]
VD=VR=530 V
10
100
Figure 13. Relative variation of leakage
current versus junction
temperature
1.0E+00
11
75
VDRM=VRRM=800 V
Different blocking voltages
9
8
VDRM=VRRM=600 V
1.0E-01
7
6
5
4
VDRM=VRRM=200 V
1.0E-02
3
2
Tj(°C)
1
Tj(°C)
1.0E-03
0
25
50
75
100
25
125
Figure 14. Relative variation of clamping
voltage (VCL) versus junction
temperature (minimum values)
50
75
100
125
Figure 15. Thermal resistance junction to
ambient versus copper surface
under tab
VCL [Tjj/VCL[Tj=25°C]
80
1.15
Rth(j-a) (°C/W)
D²PAK
Printed circuit board FR4,
copper thickness = 35 µm
70
1.10
60
1.05
50
1.00
40
30
0.95
20
0.90
10
Tj (°C)
SCU(cm²)
0.85
0
-50
-25
0
25
50
75
100
125
0
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10
15
20
25
30
35
40
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Application information
ACST8
2
Application information
2.1
Typical application description
The ACST8 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 ACST8
switch is able to drive an inductive load up to 8 A with no turn off additional snubber. It also
provides high thermal performances in static and transient modes such as high torque
operating conditions or inrush current of an AC motor.
Figure 16. AC induction motor control – typical diagram
AC Motor
AC
induction
motor
AC Mains
C
ACST
Phase shift capacitor +
protective air inductance
ACST
Rg
Vcc
MCU
6/13
L
Doc ID 7463 Rev 7
Rg
Selection of the
rotor direction
ACST8
2.2
Application information
AC line transient voltage ruggedness
In comparison with standard Triacs, which are not robust against surge voltage, the ACST8
is self-protected against over-voltage, specified by the new parameter VCL. The ACST8
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 ACST8 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 ACST8 folds back safely to the on state as shown in Figure 18. The ACST8
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.
Figure 17. Overvoltage ruggedness test circuit for resistive and inductive loads for
IEC 61000-4-5 standards
R = 13 Ω, L = 2 µH, Vsurge = 2 kV
Rg = 82 Ω
Surge generator
2kV surge
Rgene
Model of the load
Filtering unit
R
L
ACST8
AC Mains
Rg
Doc ID 7463 Rev 7
7/13
Ordering information scheme
ACST8
Figure 18. Typical current and voltage waveforms across the ACST8 during
IEC 61000-4-5 standard test
Vpeak = VCL
1.2/50 µs voltage surge
V
0
Ipeak = 160 A
I
8/20 µs current surge
0
dI/dt = 180 A/µs
3
Ordering information scheme
Figure 19. Ordering information scheme
ACS T 8 30 - 8
AC switch
Topology
T = Triac
On-state rms current
8=8A
Triggering gate current
30 = 30 mA
Repetitive peak off-state voltage
8 = 800 V
Package
FP = TO-220FPAB
T = TO-220AB
G = D2PAK
Delivery mode
TR = Tape and reel
Blank = Tube
8/13
Doc ID 7463 Rev 7
FP TR
ACST8
4
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.
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.
Doc ID 7463 Rev 7
2.6 typ.
3.75
3.85
0.102 typ.
0.147
0.151
9/13
Package information
Table 7.
ACST8
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
10/13
Doc ID 7463 Rev 7
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
Diam.
3.00
3.20
0.118
0.126
ACST8
Package information
Table 8.
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°
0.016 typ.
8°
0°
8°
Figure 20. Footprint (dimensions in mm)
16.90
10.30
5.08
1.30
8.90
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11/13
Ordering information
5
ACST8
Ordering information
Table 9.
Ordering information
Order code
Marking
ACST830-8FP
ACST830-8T
ACST8308
Package
Weight
Base qty
Packing mode
TO-220FPAB
2.4 g
50
Tube
TO-220AB
2.3 g
50
Tube
D2PAK
1.5 g
500
Tape and reel
ACST830-8GTR
6
Revision history
Table 10.
12/13
Document revision history
Date
Revision
Changes
Jan-2002
4B
08-Nov-2004
5
TO-220AB and D2PAK packages added.
24-Nov-2004
6
Table 6 page 3: IGT parameter added
18-Dec-2009
7
Added ECOPACK statement. Reformatted for consistency with other
datasheets in this product class. Order codes updated.
Last update.
Doc ID 7463 Rev 7
ACST8
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Doc ID 7463 Rev 7
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