ST ACST6 User Manual

ACST6
Overvoltage protected AC switch
Features
Triac with overvoltage protection
Low I
TO-220FPAB insulated package: 1500 V rms
(< 10 mA)
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
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
OUT
G
OUT
COM
TO-220AB
ACST610-8T
OUT
G
COM
TO-220FPAB
ACST610-8FP
OUT
D²PAK
ACST610-8G
ACST610-8R

Figure 1. Functional diagram

OUT
G
OUT
COM
G
OUT
COM
I²PAK
Description
The ACST6 series belongs to the ACS™/ACST power switch family built with A.S.D. 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 (I
< 10 mA) and still shows a high noise
GT
immunity complying with IEC standards such as IEC 61000-4-4 (fast transient burst test).
July 2010 Doc ID 7297 Rev 10 1/15
®
(application
G
COM

Table 1. Device summary

Symbol Value Unit
I
T(RMS)
V
DRM/VRRM
I
GT
6A
800 V
10 mA
TM: ACS is a trademark of STMicroelectronics. ®: A.S.D. is a registered trademark of STMicroelectronics
www.st.com
15
Characteristics ACST6

1 Characteristics

Table 2. Absolute ratings (limiting values)

Symbol Parameter Value Unit
TO-220FPAB T
TO-220AB/
2
I
T(RMS)
I
TSM
I
dI/dt
V
P
G(AV)
P
I
GM
T
V
INS(RMS)
On-state rms current (full sine wave)
Non repetitive surge peak on-state current Tj initial = 25 °C, ( full cycle sine wave)
2
tI2t for fuse selection tp = 10 ms 13 A2s
Critical rate of rise on-state current
= 2 x I
I
G
Non repetitive line peak pulse voltage
PP
GT, (tr
100 ns)
(1)
Average gate power dissipation Tj = 125 °C 0.1 W
Peak gate power dissipation (tp = 20 µs) Tj = 125 °C 10 W
GM
Peak gate current (tp = 20 µs) Tj = 125 °C 1.6 A
Storage temperature range -40 to +150 °C
stg
T
Operating junction temperature range -40 to +125 °C
j
Maximum lead solder temperature during 10 ms (at 3 mm from plastic case) 260 °C
T
l
Insulation rms voltage
1. According to test described in IEC 61000-4-5 standard and Figure 19.

Table 3. Electrical characteristics

D
PA K / I2PA K
D2PA K w i t h
2
copper
1cm
F = 60 Hz t
F = 50 Hz t
F = 120 Hz T
TO-220FPAB
= 92 °C
c
6
= 106 °C
T
c
= 62 °C 1.5
T
amb
= 16.7 ms 47 A
p
= 20 ms 45 A
p
= 125 °C 100 A/µs
j
Tj = 25 °C 2 kV
1500 V
A
Symbol Test conditions Quadrant T
(1)
I
GT
V
V
I
H
dV/dt
(dI/dt)
V
1. Minimum IGT is guaranteed at 5% of IGT max
V
= 12 V, RL = 33 Ω I - II - III 25 °C MAX. 10 mA
OUT
V
= 12 V, RL = 33 Ω I - II - III 25 °C MAX. 1.0 V
GT
GD
I
I
CL
(2)
L
L
OUT
V
= V
OUT
I
= 500 mA 25 °C MAX. 25 mA
OUT
I
= 1.2 x I
G
I
= 1.2 x I
G
(2)
V
OUT
(2)
(dV/dt)c = 15 V/µs 125 °C MIN. 3.5 A/ms
c
I
= 0.1 mA, t
CL
, RL = 3.3 kΩ I - II - III 125 °C MIN. 0.2 V
DRM
GT
GT
= 67 % V
, gate open 125 °C MIN. 500 V/µs
DRM
= 1 ms 25 °C MIN. 850 V
p
2. For both polarities of OUT pin referenced to COM pin
2/15 Doc ID 7297 Rev 10
j
Val ue Unit
I - III 25 °C MAX. 30 mA
II 25 °C MAX. 40 mA
ACST6 Characteristics

Table 4. Static characteristics

Symbol Test conditions Value Unit
I
= 2.1 A, t
OUT
(1)
V
V
R
I I
TM
T0
(1)
d
DRM
RRM
(1)
= 8.5 A, t
I
OUT
Threshold voltage Tj = 125 °C MAX. 0.9 V
Dynamic resistance Tj = 125 °C MAX. 80 mΩ
V
= V
OUT
1. For both polarities of OUT pin referenced to COM pin

Table 5. Thermal resistances

Symbol Parameter Value Unit
= 500 µs
p
= 500 µs 1.7
p
Tj = 25 °C MAX.
Tj = 25 °C MAX. 20 µA
/ V
DRM
RRM
= 125 °C MAX. 500 µA
T
j
1.4 V
Rt
h(j-a)
2
copper pad) D2PA K 4 5
R
Junction to ambient (soldered on 1 cm
Junction to case for full cycle sine wave conduction
th(j-c)
Figure 2. Maximum power dissipation versus
rms on-state current
P(W)
Junction to ambient
8
α = 180°
7
6
5
4
3
2
1
0
0123456
180°
I
(A)
T(RMS)
TO-220AB TO-220FPAB
2
PAK 65
I
60
°C/W
TO-220FPAB 4.25
TO-220AB
2
D
PA K , I2PA K
2.5
°C/W
Figure 3. On-state rms current versus case
temperature (full cycle)
I
(A)
T(RMS)
7
6
5
4
3
2
1
0
0 25 50 75 100 125
TO-220FPAB
TC(°C)
TO-220AB
D²PAK
I²PAK
α
= 180°
Doc ID 7297 Rev 10 3/15
Characteristics ACST6
Figure 4. On-state rms current versus
ambient temperature
Figure 5. Relative variation of thermal
impedance versus pulse duration
(free air convection, full cycle)
I
(A)
T(RMS)
2.5
2.0
1.5
TO-220FPAB
TO220AB
1.0
0.5
0.0
0 25 50 75 100 125
I2PAK
D2PAK with
copper
surface = 1
2
cm
Ta(°C)
α=180°
Figure 6. Relative variation of gate trigger
current (I
) and voltage (VGT)
versus junction temperature
Figure 7. Relative variation of holding
K = [Zth/ Rth]
1.0E+00
Z
th(j-c)
Z
TO-220AB
D²PAK
1.0E-01
I²PAK
TO-220FPAB
1.0E-02
1.0E-03 1.0E-01 1.0E+01 1.0E+03
current (IH) and latching current (IL) versus junction temperature
th(j-a)
tp(s)
IGT,VGT[Tj] / IGT,VGT[Tj= 25 °C]
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-50 -25 0 25 50 75 100 125
IGTQ3
V Q1-Q2-Q3
GT
IGTQ1-Q2
Figure 8. Surge peak on-state current
versus number of cycles
I
(A)
TSM
50
40
30
20
Repetitive TC=106 °C
10
0
1 10 100 1000
Non repetitive
Tjinitial = 25 °C
(typical values)
t = 20 ms
One cycle
Number of cycles
Number of cycles
Tj(°C)
IH,IL[Tj] / IH,IL[Tj= 25 °C]
2.5
2.0
1.5
1.0
0.5
0.0
-50 -25 0 25 50 75 100 125
Tj(°C)
(typical values)
I
L
I
H
Figure 9. Non repetitive surge peak on-state
current and corresponding value of
2
I
t versus sinusoidal pulse width
I
(A), I²t (A²s)
TSM
1000
100
10
1
0.01 0.10 1.00 10.00
dl /dt limitation: 100 A / µs
Tjinitial = 25 °C
I
TSM
I²t
tp(ms)
4/15 Doc ID 7297 Rev 10
ACST6 Characteristics
Figure 10. On-state characteristics
(maximum values)
ITM(A)
100
10
Tj= 125 °C
1
012345
Tj= 25 °C
Tjmax: Vto= 0.90 V Rd= 80 m
VTM(V)
Ω
Figure 12. Relative variation of static dV/dt
immunity versus junction temperature (gate open)
dV/dt [Tj] / dV/dt [Tj= 125 °C]
6
5
4
VD=VR= 536 V
Figure 11. Relative variation of critical rate of
decrease of main current (dI/dt)
c
versus junction temperature
(dl/dt)c[Tj] / (dl/dt)c[Tj= 125 °C]
8
7
6
5
4
3
2
1
0
25 50 75 100 125
Tj(°C)
Figure 13. Relative variation of leakage
current versus junction temperature
I
DRM/IRRM[Tj;VDRM/VRRM
1.0E+00
Different blocking voltages
1.0E-01
V
DRM=VRRM
] / I
DRM/IRRM[Tj
V
DRM=VRRM
= 600 V
= 125 °C; 800 V]
= 800V
3
2
1
0
25 50 75 100 125
Figure 14. Relative variation of clamping
voltage (V
) versus junction
CL
temperature (minimum values)
V[Tj] / V [Tj= 25 °C]
CL CL
1.15
1.10
1.05
1.00
0.95
0.90
0.85
-50 -25 0 25 50 75 100 125
Tj(°C)
Tj(°C)
1.0E-02
1.0E-03
25 50 75 100 125
V
DRM=VRRM
= 200 V
Tj(°C)
Figure 15. Thermal resistance junction to
ambient versus copper surface under tab
Rth(j-a)(°C/W)
80
70
60
50
40
30
20
10
0
0 5 10 15 20 25 30 35 40
Printed circuit board FR4, copper thickness = 35 µm
SCU(cm²)
D²PAK
Doc ID 7297 Rev 10 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
AC Mains
PTC
ACST
ACST
Power supply
Compressor with integrated e-starter
Electronic
thermostat
Gate
Driver
2
1
3
Rg
Electronic
starter
logical circuitry
Compressor
AC Mains
PTC
ACST
Run
ACST
switch
Rg
Gate
Power supply
Driver
Compressor with external electronic drive
Start
switch
Rg
6/15 Doc ID 7297 Rev 10
ACST6 Application information
Figure 17. Universal drum motor control – typical diagram
Universal motor
Stator
AC Mains
Speed motor
Rotor
ACST
regulation
Vcc

2.2 AC line transient voltage ruggedness

12V
Motor direction setting
MCU
Rg
MCU
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 V
. The ACST6
CL
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 10 7/15
Application information ACST6
Figure 18. Overvoltage ruggedness test circuit for resistive and inductive loads for
IEC 61000-4-5 standards
R = 18 , L = 2 µH, Vsurge = 2 kV
Rg = 220ΩΩ
Surge generator
2kV surge
Rgene
Filtering unit
Model of the load
R
L
AC Mains
Figure 19. Typical current and voltage waveforms across the ACST6 during
IEC 61000-4-5 standard test
V
peak=VCL
1.2/50 µs voltage surge
V
0
ACST6
Rg
I
= 120 A
peak
I
8/15 Doc ID 7297 Rev 10
8/20 µs current surge
0
dI/dt = 150 A/µs
ACST6 Ordering information scheme

3 Ordering information scheme

Figure 20. Ordering information scheme

ACS T 6 10 - 8 G TR
AC switch
Topology
T = Triac
On-state rms current
6 = 6 A
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 10 9/15
Package information ACST6

4 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 specifications, grade definitions and product status are available at: www.st.com ECOPACK

Table 6. TO-220AB dimensions

®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
.
Dimensions
Ref.
Millimeters Inches
Min. Max. Min. Max.
A 4.40 4.60 0.173 0.181
C 1.23 1.32 0.048 0.051
H2
Dia
A
C
D 2.40 2.72 0.094 0.107
E 0.49 0.70 0.019 0.027
L2
F2
F1
L5
L6
L9
L4
F
G1
L7
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
D
G1 2.40 2.70 0.094 0.106
H2 10 10.40 0.393 0.409
L2 16.4 typ. 0.645 typ.
M
E
L4 13 14 0.511 0.551
L5 2.65 2.95 0.104 0.116
G
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
10/15 Doc ID 7297 Rev 10
M 2.6 typ. 0.102 typ.
Diam. 3.75 3.85 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
A
H
B
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
Dia
L6
L2
L3
L5
F1
L4
F2
F
G1
G
D
L7
E
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
L2 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
Doc ID 7297 Rev 10 11/15
Package information ACST6
Table 8. D
L2
L
L3
2
PAK dimensions
E
A1
B2
B
G
* FLAT ZONE NO LESSTHAN 2mm
Dimensions
Ref.
Millimeters Inches
Min. Max. Min. Max.
A 4.40 4.60 0.173 0.181
A
A1 2.49 2.69 0.098 0.106
C2
A2 0.03 0.23 0.001 0.009
B 0.70 0.93 0.027 0.037
D
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
C
R
D 8.95 9.35 0.352 0.368
E 10.00 10.40 0.393 0.409
A2
G 4.88 5.28 0.192 0.208
L 15.00 15.85 0.590 0.624
M
*
V2
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
R 0.40 typ. 0.016 typ.
V2

Figure 21. Footprint (dimensions in mm)

16.90
10.30
8.90
3.70
5.08
1.30
12/15 Doc ID 7297 Rev 10
ACST6 Package information

Table 9. I2PAK double track dimensions

Dimensions
Ref.
Millimeters Inches
Min. Max. Min. Max.
A
E
L2
L3
L
Cropping direction
C2
D
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
A1
G
B2
B
C
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
Doc ID 7297 Rev 10 13/15
Ordering information ACST6

5 Ordering information

Table 10. Ordering information

Order code Marking Package Weight Base Qty Packing mode
ACST610-8FP
ACST610-8G D2PAK 1.5 g 50 Tube
ACST610-8GTR D
ACST6108
ACST610-8R I
ACST610-8T TO-220AB 1.5 g 50 Tube

6 Revision history

Table 11. Document revision history

Date Revision Changes
Jan-2002 7F Previous issue.
09-May-2005 8 Layout update. No content change.
18-Dec-2009 9
01-Jul-2010 10 Updated Figure 20.
TO-220FPAB 2.4 g 50 Tube
2
PAK 1.5 g 1000 Tape and reel
2
PAK 2.3 g 50 Tube
Document structure and parameter presentation revised for consistency with other ACST documents. No technical changes. Order codes updated.
14/15 Doc ID 7297 Rev 10
ACST6
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Doc ID 7297 Rev 10 15/15
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