STMicroelectronics ACST1235-7GTR Overvoltage protected ac switch Datasheet

ACST12
Overvoltage protected AC switch
Features
■
Triac with overvoltage crowbar technology
■
Low IGT (<10 mA) or high immunity
(IGT<35 mA) version
■
High noise immunity: static dV/dt > 2000 V/µs
OUT
OUT
G
G
OUT
COM
Benefits
■
Enables equipment to meet IEC 61000-4-5
■
High off-state reliability with planar technology
■
Need no external over voltage protection
■
Reduces the power passive component count
■
High immunity against fast transients
described in IEC 61000-4-4 standards
COM
D2PAK
ACST1210-7G
ACST1235-7G
TO-220AB
ACST1210-7T
ACST1235-7T
Figure 1.
Functional diagram
OUT
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
COM
Table 1.
Description
The ACST12 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 12 A.
This ACST12 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 standard. The ACST1210-7 needs
a low gate current to be activated (IGT < 10 mA)
and still provides a high electrical noise immunity
complying with the IEC 61000-4-4 standard. The
ACST1235-7 offers an extremely high static dV/dt
immunity of 2 kV/µs minimum.
December 2010
G
Device summary
Symbol
Value
Unit
IT(RMS)
12
A
VDRM/VRRM
700
V
IGT
10 or 35
mA
TM: ACS is a trademark of STMicroelectronics
®: A.S.D. is a registered trademark of STMicroelectronics
Doc ID 15238 Rev 4
1/13
www.st.com
13
Characteristics
ACST12
1
Characteristics
Table 2.
Absolute ratings (limiting values)
Symbol
IT(RMS)
ITSM
I
2t
Parameter
On-state rms current full sine wave
Non repetitive surge peak on-state current
Tj initial = 25 °C,( full cycle sine wave)
I2t
Value
Unit
TO-220AB
D2PAK
Tc = 104 °C
D2PAK
with 1cm2 of Cu
Tamb = 47
°C
F = 60 Hz
tp = 16.7 ms
126
A
F = 50 Hz
tp = 20.0 ms
120
A
tp = 10 ms
95
A2s
Tj = 125 °C
100
A/µs
for fuse selection
12
A
2
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 = 125 °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 soldering temperature during 10 s (at 3 mm from plastic case)
260
°C
PG(AV)
F = 120 Hz
1. According to test described in IEC 61000-4-5 standard and Figure 19
Table 3.
Electrical characteristics
Value
Symbol
Test conditions
Quadrant
Unit
Tj
ACST1210-7
ACST1235-7
Unit
10
35
mA
IGT(1)
VOUT = 12 V, RL = 33 Ω
I - II - III
25 °C
MAX.
VGT
VOUT = 12 V, RL = 33 Ω
I - II - III
25 °C
MAX.
1.0
V
VGD
VOUT = VDRM, RL = 3.3 Ω
I - II - III
125 °C
MIN.
0.2
V
IH(2)
IOUT = 500 mA
25 °C
MAX.
30
50
mA
IL
IG = 1.2 x IGT
25 °C
MAX.
50
70
mA
125 °C
MIN.
200
2000
V/µs
MIN.
5.3
dV/dt(2)
(dI/dt)c(2)
I - II - III
VOUT = 67% VDRM, gate open
(dV/dt)c = 15 V/µs
125 °C
Without snubber
VCL
A/ms
MIN.
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
2/13
Doc ID 15238 Rev 4
14
850
V
ACST12
Characteristics
Table 4.
Static characteristics
Symbol
VTM(1)
(1)
Test conditions
Value
Unit
IOUT = 17 A, tp = 500 µs
Tj = 25 °C
MAX.
1.5
V
Threshold voltage
Tj = 125 °C
MAX.
0.9
V
Rd(1)
Dynamic resistance
Tj = 125 °C
MAX.
30
mΩ
IDRM
IRRM
20
µA
VOUT = VDRM/ VRRM
1.5
mA
Value
Unit
VT0
Tj = 25 °C
MAX.
Tj = 125 °C
1. For both polarities of OUT pin referenced to COM pin
Table 5.
Thermal characteristics
Symbol
Parameter
TO-220AB
Rth(j-c)
Junction to case (AC)
Rth(j-a)
Junction to ambient
°C/W
1.5
2PAK
°C/W
D
TO-220AB
Figure 2.
D2PAK
Maximum power dissipation versus Figure 3.
on-state rms current (full cycle)
P(W)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
of Cu
60
°C/W
45
°C/W
On-state rms current versus case
temperature (full cycle)
IT(RMS) (A)
13
α=180 °
12
11
10
9
8
7
6
5
4
3
2
IT(RMS)(A)
TC(°C)
1
0
0
1
2
Figure 4.
3.0
with 1
cm2
3
4
5
6
7
8
9
10
11
12
On-state rms current versus
ambient temperature (free air
convection full cycle)
0
25
Figure 5.
IT(RMS)(A)
1.0E+00
50
75
100
125
Relative variation of thermal
impedance versus pulse duration
K=[Zth/Rth]
Z th(j-c)
D2PAK
With 1cm2 of cu
Zth(j-a)
2.5
2.0
TO-220AB
1.5
1.0E-01
1.0
0.5
Tamb(°C)
tp(s)
0.0
0
25
50
75
100
125
1.0E-02
1.0E-03
Doc ID 15238 Rev 4
1.0E-02
1.0E-01
1.0E+00
1.0E+01
1.0E+02
1.0E+03
3/13
Characteristics
Figure 6.
ACST12
On-state characteristics
(maximum values)
Figure 7.
ITM (A)
1000
Non repetitive surge peak on-state
current versus number of cycles
(Tj initial = 25 °C)
ITSM(A)
130
120
110
t=20ms
100
90
100
One cycle
Non repetitive
Tj initial=25 °C
80
70
60
50
40
10
30
Tj=125 °C
Tj=25 °C
20
Tj max :
Vto = 0.90 V
Rd = 30 mΩ
VTM (V)
1
Figure 8.
10000
2
3
4
Number of cycles
0
1
0
Repetitive
TC=104 °C
10
1
5
10
Non repetitive surge peak on-state Figure 9.
current for a sinusoidal pulse and
corresponding value of I2t
ITSM(A), I2t (A2s)
100
1000
Relative variation of gate triggering
current and gate voltage versus
junction temperature (typical value)
IGT, VGT[Tj] / IGT, VGT[Tj = 25 °C]
3.0
dI/dt limitation: 100 A/µs
Tj initial=25 °C
2.5
1000
IGT Q3
ITSM
IGT Q1-Q2
2.0
100
1.5
I²t
1.0
VGT Q1-Q2-Q3
10
0.5
tP(ms)
1
0.01
0.10
1.00
T j(°C)
0.0
10.00
-50
-25
0
25
50
75
100
125
Figure 10. Relative variation of holding
Figure 11. Relative variation of critical rate of
current (IH) and latching current (IL)
decrease of main current (di/dt)c
versus junction temperature
versus (dV/dt)c
IH,IL[Tj]/IH, IL[Tj = 25 °C]
2.5
1.6
(di/dt)c[(dV/dt)c] / Specified(di/dt)c
1.4
2.0
1.2
ACST12-7Cxx
1.0
1.5
Typical values
0.8
1.0
ACST12-7Sxx
0.6
IL
0.5
0.4
IH
0.2
Tj (°C)
0.0
-50
4/13
-25
0
25
50
75
100
125
0.0
0.1
Doc ID 15238 Rev 4
(dV/dt)c (V/µs)
1
10
100
ACST12
Characteristics
Figure 12. Relative variation of critical rate of
decrease of main current versus
junction temperature
Figure 13. Relative variation of static dV/dt
immunity versus junction
temperature
(dI/dt)c[Tj] / (dI/dt)c[Tj=125°C]
11
12
10
11
9
10
dV/dt[Tj] / dV/dt[Tj=125°C]
VD=VR=469 V
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
Tj(°C)
Tj(°C)
0
0
25
50
75
100
125
Figure 14. Relative variation of maximum
clamping voltage, VCL versus
junction temperature
1.15
25
50
75
100
125
Figure 15. Variation of thermal resistance
junction to ambient versus copper
surface under tab
VCL[TJ/VCL[TJ = 25 °C]
Rth(j-a)(°C/W)
80
Epoxy printed circuit board
FR4, copper thickness = 35 µm
70
1.10
D²PAK
60
1.05
50
1.00
40
Minimum values
0.95
30
20
0.90
10
SCU(cm²)
TJ(°C)
0.85
0
-50
-25
0
25
50
75
100
125
0
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10
15
20
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Application information
ACST12
2
Application information
2.1
Typical application description
The ACST12 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
ACST12 switch is able to drive an inductive load up to 12 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 ACST1210-7 can be driven directly by a MCU
through a simple gate resistor as shown in Figure 16.
Figure 16. Compressor control – typical diagrams
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
6/13
Rg
Gate
Driver
Compressor with external electronic drive
Doc ID 15238 Rev 4
ACST12
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 ACST12
is self-protected against over-voltage, specified by the new parameter VCL. The ACST12
switch can safely withstand AC line transient voltages either by clamping the low energy
spikes, such as the 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 ACST12 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 ACST12 folds back safely to the on state as shown in Figure 19. The
ACST12 recovers its blocking voltage capability after the surge and the next zero crossing
current. Such a non repetitive test can be done at least 10 times on each AC line voltage
polarity.
Doc ID 15238 Rev 4
7/13
Application information
ACST12
Figure 18. Overvoltage ruggedness test circuit for resistive and inductive loads for
IEC 61000-4-5 standards
R = 20 Ω, L = 2 µH, Vsurge = 2 kV
Surge generator
2kV surge
Rgene
Model of the load
Filtering unit
R
L
ACST12
AC Mains
Rg
Figure 19. Typical voltage and current waveforms across the ACST12
during IEC 61000-4-5 standard test
V peak = V CL
1.2/50 µs voltage surge
V
0
8/20 µs current surge
I
0
8/13
Doc ID 15238 Rev 4
ACST12
3
Ordering information scheme
Ordering information scheme
Figure 20. Ordering information scheme
ACS T 12 10 - 7 G TR
AC switch
Topology
T = Triac
On-state rms current
12 = 12 A
Sensitivity
10 = 10 mA
35 = 35 mA
Voltage
7 = 700 V
Package
G = D²PAK
T = TO-220AB
Delivery mode
TR = Tape and reel (DPAK)
Blank = Tube (TO-220FPAB, DPAK)
Doc ID 15238 Rev 4
9/13
Package information
4
ACST12
Package information
●
Epoxy meets UL94, V0
●
Recommended torque (TO-220AB): 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
C
L5
L7
L6
L2
F2
D
L9
L4
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
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.
10/13
Doc ID 15238 Rev 4
2.6 typ.
3.75
3.85
0.102 typ.
0.147
0.151
ACST12
Package information
Table 7.
D2PAK dimensions
Dimensions
Ref.
Millimeters
Min.
A
E
C2
L2
D
L
Typ.
Inches
Max.
Min.
Typ.
Max.
A
4.30
4.60
0.169
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
1.25
C
0.45
0.60
0.017
0.024
C2
1.21
1.36
0.047
0.054
D
8.95
9.35
0.352
0.368
E
10.00
10.28 0.393
0.405
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
L3
1.40
0.048 0.055
A1
B2
R
C
B
G
A2
2mm min.
FLAT ZONE
V2
R
V2
0.40
0°
0.016
8°
0°
8°
Figure 21. Footprint (dimensions in mm)
16.90
10.30
5.08
1.30
8.90
Doc ID 15238 Rev 4
3.70
11/13
Ordering information
5
ACST12
Ordering information
Table 8.
Ordering information
Order code
Marking
ACST1210-7T
ACST1210-7G
Package
Weight
Base qty
Packing mode
TO-220AB
ACST12107
Tube
1.5 g
50
Tube
2
D PAK
D PAK
1.5 g
1000
Tape and reel
ACST1235-7T
TO-220AB
ACST12357
ACST1235-7GTR
2.3 g
50
Tube
2
D PAK
1.5 g
50
Tube
2PAK
1.5 g
1000
Tape and reel
D
Revision history
Table 9.
12/13
50
ACST1210-7GTR
ACST1235-7G
6
2.3 g
2
Document revision history
Date
Revision
Changes
02-Dec-2008
1
First issue.
13-Apr-2010
2
Updated ECOPACK statement. Reformatted for consistency with
other datasheets in this product class.
01-Jul-2010
3
Updated Figure 20.
07-Dec-2010
4
Updated Table 3.
Doc ID 15238 Rev 4
ACST12
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