ACST12-7CG-TR [STMICROELECTRONICS]
Transient protected AC power switch; 瞬态保护的交流电源开关
| 型号： | ACST12-7CG-TR |
| 厂家： | 
ST |
| 描述： | Transient protected AC power switch |
| 文件： | 总12页 (文件大小：181K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ACST12
Transient protected AC power switch
Features
OUT
■ Triac with overvoltage crowbar technology
OUT
■ Low IGT (<10 mA) or high immunity
(IGT<35 mA) version
G
■ High noise immunity: static dV/dt > 2000 V/µs
G
OUT
COM
COM
Benefits
D²PAK
ACST12-7xG
TO-220AB
ACST12-7xT
■ 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
Figure 1.
Functional diagram
■ High immunity against fast transients
OUT
described in IEC 61000-4-4 standards
Applications
■ AC mains static switching in appliance and
industrial control systems
G
■ Drive of medium power AC loads like:
– Universal drum motor of washing machine
– Compressor for fridge or air conditioner
COM
Table 1.
Symbol
IT(RMS)
DRM/VRRM
IGT
Device summary
Description
Value
Unit
The ACST12 series belongs to the ACS/ACST
family built with the ASD (application specific
discrete) technology. This high performance
device is adapted to home appliances or industrial
systems and drives loads up to 12 A.
12
A
V
V
700
10 or 35
mA
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 standards. The ACST12-7S needs a
low gate current to be activated (IGT < 10 mA) and
in the mean time provides a high electrical noise
immunity such as those described in the IEC
61000-4-4 standards. The ACST12-7C offers an
extremely high static dV/dt immunity of 2 kV/µs
minimum.
December 2008
Rev 1
1/12
www.st.com
Characteristics
ACST12
1
Characteristics
Table 2.
Symbol
Absolute ratings (limiting values)
Parameter
Value
Unit
TO-220AB
D²PAK
Tc = 104 °C
Tamb = 47 °C
12
IT(RMS) On-state rms current full sine wave
A
D²PAK
with 1cm² of Cu
2
F = 60 Hz
F = 50 Hz
tp = 16.7 ms
tp = 20.0 ms
tp = 10 ms
126
120
95
A
A
Non repetitive surge peak on-state current
Tj initial = 25 °C,( full cycle sine wave)
ITSM
I2t
I2t for fuse selection
A2s
Critical rate of rise on-state current
IG = 2 x IGT, (tr ≤ 100 ns)
Non repetitive line peak pulse voltage (1)
dI/dt
VPP
F = 120 Hz
Tj = 125 °C
100
A/µs
Tj = 125 °C
Tj = 125 °C
Tj = 125 °C
Tj = 125 °C
2
kV
W
W
A
PG(AV) Average gate power dissipation
0.1
PGM
IGM
Tstg
Tj
Peak gate power dissipation (tp = 20 µs)
Peak gate current (tp = 20 µs)
10
1
Storage temperature range
- 40 to + 150
- 40 to + 125
°C
°C
Operating junction temperature range
1. According to test described in IEC 61000-4-5 standard and Figure 19
Table 3.
Symbol
Electrical characteristics
Value
ACST12-7Sx ACST12-7Cx
Unit
Unit
Test conditions
Quadrant
Tj
(1)
IGT
VOUT = 12 V, RL = 33 Ω
VOUT = 12 V, RL = 33 Ω
I - II - III
I - II - III
25 °C
25 °C
125 °C
25 °C
25 °C
125 °C
MAX.
MAX.
MIN.
MAX.
MAX.
MIN.
MIN.
MIN.
10
35
mA
V
VGT
1.0
0.2
VGD
VOUT = VDRM, RL = 3.3 Ω I - II - III
V
(2)
IH
IOUT = 500 mA
30
50
50
70
mA
mA
V/µs
IL
IG = 1.2 x IGT
I - II - III
dV/dt(2) VOUT = 67% VDRM, gate open
200
5.3
2000
(dV/dt)c = 15 V/µs
(dI/dt)c(2)
125 °C
25 °C
A/ms
V
Without snubber
14
VCL
ICL = 0.1 mA, tp = 1 ms
850
1. Minimum I is guaranteed at 5% of I max
GT
GT
2. For both polarities of OUT pin referenced to COM pin
2/12
ACST12
Characteristics
Table 4.
Symbol
Static characteristics
Test conditions
Value
Unit
(1)
VTM
IOUT = 17 A, tp = 500 µs
Threshold voltage
Tj = 25 °C
Tj = 125 °C
Tj = 125 °C
Tj = 25 °C
Tj = 125 °C
MAX.
MAX.
MAX.
1.5
0.9
30
V
V
(1)
VT0
(1)
Rd
Dynamic resistance
mΩ
µA
mA
20
IDRM
IRRM
VOUT = VDRM/ VRRM
MAX.
1.5
1. For both polarities of OUT pin referenced to COM pin
Table 5.
Symbol
Thermal characteristics
Parameter
Value
Unit
TO-220AB
D²PAK
°C/W
°C/W
°C/W
°C/W
Rth(j-c) Junction to case (AC)
Rth(j-a) Junction to ambient
1.5
TO-220AB
60
45
D²PAK with 1cm² of Cu
Figure 2.
Maximum power dissipation vs.
on-state rms current (full cycle)
Figure 3.
On-state rms current vs. case
temperature (full cycle)
P(W)
IT(RMS)(A)
13
15
α
=180 °
14
13
12
11
10
9
12
11
10
9
8
7
8
6
7
6
5
5
4
4
3
3
2
2
TC(°C)
IT(RMS)(A)
1
1
0
0
0
25
50
75
100
125
0
1
2
3
4
5
6
7
8
9
10
11
12
Figure 4.
On-state rms current vs. ambient
temperature (free air convection full
cycle)
Figure 5.
Relative variation of thermal
impedance vs. pulse duration
K=[Z /R
th th
]
I
(A)
T(RMS)
1.0E+00
1.0E-01
1.0E-02
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Z
D2PAK
With 1cm2 of cu
(j
th -
c)
Z
(j a)
th -
TO-220AB
T
(°C)
amb
t
(s)
p
0
25
50
75
100
125
1.0E-03
1.0E-02
1.0E-01
1.0E+00
1.0E+01
1.0E+02
1.0E+03
3/12
Characteristics
ACST12
Figure 6.
On-state characteristics
(maximum values)
Figure 7.
Non repetitive surge peak on-state
current vs. number of cycles
(Tj initial = 25 °C)
ITM (A)
ITSM(A)
130
1000
100
10
120
110
100
90
t=20ms
One cycle
Non repetitive
Tj initial=25 °C
80
70
60
50
40
30
20
Repetitive
TC=104 °C
Tj max :
to = 0.90 V
Rd = 30 mΩ
V
10
0
Number of cycles
Tj=125 °C
Tj=25 °C
VTM (V)
1
1
10
100
1000
0
1
2
3
4
5
Figure 8.
Non repetitive surge peak on-state Figure 9.
current for a sinusoidal pulse and
corresponding value of I²t
Relative variation of gate triggering
current (IGT) and voltage (VGT) vs.
junction temperature (typical value)
ITSM(A), I2t (A2s)
IGT, VGT[Tj] / IGT, VGT[Tj = 25 °C]
3.0
2.5
2.0
1.5
1.0
0.5
0.0
10000
1000
100
dI/dt limitation: 100 A/µs
Tj initial=25 °C
IGT Q3
ITSM
IGT Q1-Q2
I²t
VGT Q1-Q2-Q3
10
T (°C)
j
tP(ms)
1
-50
-25
0
25
50
75
100
125
0.01
0.10
1.00
10.00
Figure 10. Relative variation of holding
Figure 11. Relative variation of critical rate of
decrease of main current (di/dt)c
vs. (dV/dt)c
current (IH) and latching current (IL)
vs. junction temperature
I ,I [T]/I , I [T = 25 °C]
H
L
j
H
L
j
(di/dt)c[(dV/dt)c] / Specified(di/dt)c
1.6
2.5
2.0
1.5
1.0
0.5
0.0
1.4
1.2
ACST12-7Cxx
1.0
0.8
Typical values
ACST12-7Sxx
0.6
IL
0.4
IH
0.2
(dV/dt)c (V/µs)
Tj(°C)
0.0
0.1
1
10
100
-50
-25
0
25
50
75
100
125
4/12
ACST12
Characteristics
Figure 12. Relative variation of critical rate of Figure 13. Relative variation of static dV/dt
decrease of main current vs.
immunity vs. junction temperature
junction temperature
(dI/dt)c[T ] / (dI/dt)c[T =125°C]
dV/dt[T ] / dV/dt[T =125°C]
j
j
j
j
12
11
10
11
10
VD=VR=400 V
9
9
8
7
6
5
4
3
2
1
0
8
7
6
5
4
3
2
1
0
T (°C)
j
T (°C)
j
25
50
75
100
125
25
50
75
100
125
Figure 14. Relative variation of maximum
Figure 15. Variation of thermal resistance
junction to ambient vs. copper
surface under tab
clamping voltage, VCL vs. junction
temperature
VCL[TJ/VCL[TJ = 25 °C]
Rth(j-a)(°C/W)
80
1.15
1.10
1.05
1.00
0.95
0.90
0.85
Epoxy printed circuit board
FR4, copper thickness = 35 µm
70
D²PAK
60
50
40
30
20
10
0
Minimum values
SCU(cm²)
TJ(°C)
100
0
5
10
15
20
-50
-25
0
25
50
75
125
5/12
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, with no turn off additional snubber, an inductive load up to
12 A. 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 ACST12-7S can be driven directly by a MCU through a
simple gate resistor as shown in Figure 16.
Figure 16. Compressor control – typical diagram
Compressor
Compressor
AC Mains
AC Mains
PTC
PTC
Electronic
ACST
starter
ACST
logical circuitry
1
Start
switch
ACST
Run
switch
Electronic
thermostat
ACST
Rg
Rg
Rg
Gate
Driver
Gate
Driver
Power supply
Power supply
6/12
ACST12
Application information
Figure 17. Universal drum motor control – typical diagram
Universal motor
Stator
Rotor
12V
AC Mains
Motor direction
setting
MCU
ACST
Speed motor
regulation
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 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 rises.
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. Thanks to the load which
is limiting the current, the ACST switch withstands the voltage spikes up to 2 kV above the
peak line voltage. The protection is based on an overvoltage crowbar technology. The
ACST12 switches safely to the on state as shown in Figure 19. The ACST12 recovers its
blocking voltage capability after the surge. Such a non repetitive test can be done at least 10
times on each AC line voltage polarity.
7/12
Ordering information scheme
ACST12
Figure 18. Overvoltage ruggedness test circuit Figure 19. Typical current and voltage
for resistive and inductive loads for
IEC 61000-4-5 standards
waveforms across the ACST12
during IEC 61000-4-5 standard test
R = 5 Ω, L = 2 µH, Vsurge = 2 kV
Surge generator
VPEAK = VCL
2kV surge
VOUT
Rgene
Model of the load
Filtering unit
L
R
IOUT
L
ACST12
Rg
AC Mains
C
3
Ordering information scheme
Figure 20. Ordering information scheme
ACST 12 - 7
S
G
-TR
AC switch series
On-state rms current
12 = 12 ARMS
Repetitive peak off-state voltage
7 = 700 V
Sensitivity
S = 10 mA
C = 35 mA
Package
G = D²PAK
T = TO-220AB
Packing
TR = Tape and reel
Blank : Tube
8/12
ACST12
Package information
4
Package information
●
●
Epoxy meets UL94, V0
Recommende torque: 0.4 to 0.6 N·m
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a lead-free second level interconnect. The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at www.st.com.
Table 6.
TO-220AB dimensions
Dimensions
Millimeters
Ref.
Inches
Min.
Max.
Min.
Max.
A
C
4.40
1.23
2.40
0.49
0.61
1.14
1.14
4.95
2.40
10
4.60
1.32
2.72
0.70
0.88
1.70
1.70
5.15
2.70
10.40
0.173
0.048
0.094
0.019
0.024
0.044
0.044
0.194
0.094
0.393
0.181
0.051
0.107
0.027
0.034
0.066
0.066
0.202
0.106
0.409
A
H2
D
Dia
C
E
L5
L7
F
F1
F2
G
L6
L2
F2
F1
D
L9
G1
H2
L2
L4
L5
L6
L7
L9
M
L4
16.4 typ.
0.645 typ.
F
M
13
14
0.511
0.104
0.600
0.244
0.137
0.551
0.116
0.620
0.259
0.154
G1
E
2.65
15.25
6.20
3.50
2.95
15.75
6.60
3.93
G
2.6 typ.
0.102 typ.
Diam.
3.75
3.85
0.147
0.151
9/12
Package information
Table 7.
ACST12
D2PAK dimensions
Dimensions
Millimeters
Min. Typ. Max. Min. Typ. Max.
Ref.
Inches
A
4.30
4.60 0.169
2.69 0.098
0.23 0.001
0.93 0.027
0.181
0.106
0.009
0.037
A
A1 2.49
A2 0.03
E
C2
L2
B
0.70
B2 1.25 1.40
0.45
C2 1.21
D
0.048 0.055
L
C
0.60 0.017
1.36 0.047
9.35 0.352
10.28 0.393
5.28 0.192
15.85 0.590
1.40 0.050
1.75 0.055
0.024
0.054
0.368
0.405
0.208
0.624
0.055
0.069
L3
A1
B2
B
R
C
D
E
G
L
8.95
10.00
4.88
G
A2
2mm min.
FLAT ZONE
15.00
L2 1.27
L3 1.40
R
V2
0.40
0.016
V2
0°
8°
0°
8°
Figure 21. Footprint (dimensions in mm)
16.90
10.30
5.08
1.30
3.70
8.90
10/12
ACST12
Ordering information
5
Ordering information
Table 8.
Order code
ACST12-7CT
Ordering information
Marking
Package
Weight
Base qty
Packing mode
TO-220AB
D2PAK
2.3 g
1.5 g
1.5 g
2.3 g
1.5 g
1.5 g
50
50
Tube
Tube
ACST12-7CG
ACST12-7CG-TR
ACST12-7ST
ACST127C
D2PAK
1000
50
Tape and reel
Tube
TO-220AB
D2PAK
ACST12-7SG
ACST127S
50
Tube
ACST12-7SG-TR
D2PAK
1000
Tape and reel
6
Revision history
Table 9.
Date
02-Dec-2008
Document revision history
Revision
Changes
1
First issue
11/12
ACST12
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