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ACS120-7SB/SFP/ST
®
April 2003 - Ed: 2A
AC LINE SWITCH
DPAK
ACS120-7SB
■Blocking voltage : VDRM /V
RRM = +/-700V
■Avalanche controlled : VCL typ = 1100 V
■Nominal conducting current : IT(RMS) =2A
■Gate triggering current : IGT <10mA
■Switch integrated driver
■High noise immunity : static dV/dt >500V/µs
FEATURES
The ACS120 belongs to the AC line switch family
built around the ASD™ concept. This high perfor-
manceswitchcircuitisabletocontrolaloadupto2
A.
The ACS™ switch embeds a high voltage clamp-
ingstructureto absorb the inductive turnoffenergy
andagatelevelshifterdrivertoseparatethedigital
controller from the main switch. It is triggered with
a negative gate current flowing out of the gate pin.
DESCRIPTION
COM
OUT
G
■Needs no more external protection snubber or
varistor
■Enables equipment to meet IEC 61000-4-5
■Reduces component count up to 80 %
■Interfaces directly with the microcontroller
■Eliminates any gate kick back on the
microcontroller
■Allows straightforward connection of several
ACS™ on same cooling pad.
BENEFITS
OUT
COM G
S
D
ON
FUNCTIONAL DIAGRAM
ASD™
AC Switch Family
TO-220FPAB
ACS120-7SFP
OUT
COM
G
■AC static switching in appliance control systems
■Drive of low power high inductive or resistive
loads like
- relay, valve, solenoid, dispenser
- pump, fan, micro-motor
- defrost heater
MAIN APPLICATIONS
OUT
COM
G
TO-220AB
ACS120-7ST
ACS120-7SB/SFP/ST
2/11
Symbol Parameter Value Unit
VDRM /V
RRM Repetitive peak off-state voltage Tj = -10 °C 700 V
IT(RMS) RMS on-state current full cycle sine
wave 50 to 60 Hz DPAK Tc = 115 °C 2 A
TO-220FPAB Tc = °C
TO-220AB Tc = 115 °C
ITSM Non repetitive surge peak on-state current
Tj initial = 25°C, full cycle sine wave F =50 Hz 20 A
F =60 Hz 11 A
I2t Fusing capability tp = 10ms 2.2 A²s
dI/dt Repetitive on-state current critical rate
of rise IG= 10mA (tr < 100ns) Tj = 125°C F = 120 Hz 50 A/µs
VPP Non repetitive line peak pulse voltage note 1 2kV
Tstg Storage temperature range - 40 to + 150 °C
Tj Operating junction temperature range - 30 to + 125 °C
Tl Maximum lead soldering temperature during 10s 260 °C
Note 1: according to test described by IEC61000-4-5 standard & Figure 3.
ABSOLUTE RATINGS (limiting values)
For either positive or negative polarity of pin OUT voltage in respect to pin COM voltage
Symbol Parameter Value Unit
PG (AV) Average gate power dissipation 0.1 W
IGM Peak gate current (tp = 20µs) 1 A
VGM Peak positive gate voltage (in respect to pin COM) 5 V
GATE CHARACTERISTICS (maximum values)
Symbol Parameter Value Unit
Rth (j-a) Junction to ambient S = 0.5cm² DPAK 70 °C/W
TO-220FPAB 60 °C/W
TO-220AB 60 °C/W
Rth (j-l) Junction to tab/lead for full cycle sine wave
conduction DPAK 2.6 °C/W
TO-220FPAB 3.5 °C/W
TO-220AB 2.6 °C/W
S = Copper surface under Tab
THERMAL RESISTANCES
ACS120-7SB/SFP/ST
3/11
Symbol Test Conditions Values Unit
IGT VOUT=12V (DC) RL=140ΩQII - QIII Tj=25°C MAX 10 mA
VGT VOUT=12V (DC) RL=140ΩQII - QIII Tj=25°C MAX 1 V
VGD VOUT=VDRM RL=3.3kΩTj=125°C MIN 0.15 V
IHIOUT= 100mA gate open Tj=25°C MAX 45 mA
ILIG= 20mA Tj=25°C MAX 65 mA
VTM IOUT = 2.8A tp=380µs Tj=25°C MAX 1.3 V
VTO Tj=125°C MAX 0.85 V
Rd Tj=125°C MAX 200 mΩ
IDRM /
IRRM VOUT = 700V Tj=25°C MAX 2 µA
Tj=125°C MAX 200
dV/dt VOUT=460V gate open Tj=110°C MIN 500 V/µs
(dI/dt)c (dV/dt)c = 20V/µs Tj=125°C MIN 1 A/ms
VCL ICL = 1mA tp=1ms Tj=25°C TYP 1100 V
ELECTRICAL CHARACTERISTICS
For either positive or negative polarity of pin OUT voltage in respect to pin COM voltage.
Parameter Symbol Parameter description
IGT Triggering gate current
VGT Triggering gate voltage
VGD Non-triggering gate voltage
IHHolding current
ILLatching current
VTM Peak on-state voltage drop
VTO On state threshold voltage
Rd On state dynamic resistance
IDRM /I
RRM Maximum forward or reverse leakage current
dV/dt Critical rate of rise of off-state voltage
(dV/dt)c Critical rate of rise of commutating off-state voltage
(dI/dt)c Critical rate of decrease of commutating on-state current
VCL Clamping voltage
ICL Clamping current
PARAMETER DESCRIPTION
ACS120-7SB/SFP/ST
4/11
The ACS120 device is well adapted to Washing machine, dishwasher, tumble drier, refrigerator,
air-conditioningsystems,andcookware.Ithasbeendesignedespeciallytoswitch on & offlowpowerloads
such as solenoid, valve, relay, dispenser, micro-motor, pump, fan and defrost heaters.
Pin COM: Common drive reference to connect to the power line neutral
Pin G: Switch Gate input to connect to the digital controller
Pin OUT: Switch Output to connect to the load
ThisACS™switch is triggered witha negative gate currentflowingout of the gatepinG. It can bedriven di-
rectly by the digital controller through a resistor as shown on the typical application diagram.
Thanks to its thermal and turn off commutation performances, the ACS120 switch is able to drive with no
turn off additional snubber an inductive load up to 2 A.
AC LINE SWITCH BASIC APPLICATION
OUT
ACS120
COM G
S
D
ON
ST72 MCU
N
AC
MAINS
L
R
-Vcc
L
M
LOAD
TYPICAL APPLICATION DIAGRAM
At the end of the last conduction half-cycle, the load current reaches the holding current level IH, and the
ACS™ switch turns off. Because of the inductance L of the load, the current flows then through the ava-
lanche diode D and decreases linearly to zero. During this time, the voltage across the switch is limited to
the clamping voltage VCL.
The energy stored in the inductance of the load depends on the holding current IHand the inductance (up
to10H);itcanreachabout10mJandisdissipatedinthe clamping diode section. The ACS switch sustains
the turn off energy because its clamping section is designed for that purpose.
HIGH INDUCTIVE SWITCH-OFF OPERATION
ACS120-7SB/SFP/ST
5/11
Fig. A: Turn-off operation of the ACS120 switch
with an electro-valve: waveform of the pin OUT
current IOUT and voltage VOUT.
VOUT
IOUT
VCL
IH
Fig. B: ACS120 switch static characteristic.
The ACS120 switch is able to sustain safely the AC line transient voltages either by clamping the low en-
ergy spikes or by breaking over under high energy shocks, even with high turn-on current rises.
The test circuit of the figure C is representative of the final ACS application and is also used to stress the
ACS switch according to the IEC 61000-4-5 standard conditions. Thanks to the load, the ACS switch sus-
tains the voltage spikes up to 2 kV above the peak line voltage. It will break over safely even on resistive
load where the turn on current rise is high as shown on figure D. Such non repetitive test can be done 10
times on each AC line voltage polarity.
AC LINE TRANSIENT VOLTAGE RUGGEDNESS
L
R
VAC +VPP
SURGEVOLTAGE
AC LINE & GENERATOR
RG = 220Ω
COM
OUT
G
S
DON
ACSxx
Fig. C: Overvoltage ruggedness test circuit
for resistive and inductive loads according to
IEC61000-4-5 standards.
R = 150Ω, L = 10µH, VPP = 2kV.
Fig. D: Current and Voltage of the ACS120 dur-
ing IEC61000-4-5 standard test with R,L&V
PP .
ACS120-7SB/SFP/ST
6/11
Maximum power dissipation vs RMS on state current.
RMS on-state current vs ambient temperature, case temperature
Relative variation of thermal impedance junction to ambient vs pulse duration and package
Relative variation of gate trigger current vs junction temperature
Relative variation of holding, latching and gate current vs junction
Relative variation of dV/dt vs Tj
Relative variation of (dV/dt)cvs (di/dt)c
Surge peak on-state current vs number of cycles
Non repetitive surge peak on-state current for a sinusoidal pulse with tp<10ms, and corresponding of I²t.
On-state characteristics (maximal values)
Thermal resistance junction to ambient vs copper surface under tab (DPAK)
Relative variation of critical (di/dt)c vs junction temperature
OTHER FIGURES
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
α=180°
P(W)
180°
αα
I (A)
T(RMS)
Fig. 1: Maximum power dissipation versus RMS
on-state current.
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
0 25 50 75 100 125
Tc(°C)
α=180° TO-220AB/DPAK
TO-220FPAB
I (A)
T(RMS)
Fig. 2-1: RMS on-state current versus case
temperature.
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0 25 50 75 100 125
α=180°
Printed circuit board FR4
Natural convection
S=0.5cm²
I (A)
T(RMS)
T (°C)
amb
Fig. 2-2: RMS on-state current versus ambient
temperature.
1.E-02
1.E-01
1.E+00
1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03
Zth(j-a)
Zth(j-c)
DPAK
TO-220FPAB
DPAK
TO-220FPAB
t (s)
p
K=[Zth/Rth]
Fig. 3: Relative variation of thermal impedance
versus pulse duration.
ACS120-7SB/SFP/ST
7/11
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
IGT
I& I
LH
I , I , I [T ] / I , I , I [T = 25°C]
GTHLj GTHL j
T (°C)
j
Fig. 4: Relative variation of gate trigger current,
holding current and latching versus junction
temperature (typical values).
0
1
2
3
4
5
6
7
8
25 50 75 100 125
T (°C)
j
dV/dt [T ] / dV/dt [T = 125°C]
jj
V
OUT=460V
Fig. 5: Relative variation of static dV/dt versus
junction temperature.
0
2
4
6
8
10
12
14
16
18
20
22
1 10 100 1000
t=20ms
Number of cycles
Non repetitive
T initial=25°C
j
Repetitive
T =105°C
ab
I (A)
TSM
Fig. 8: Surgepeakon-statecurrentversusnumber
of cycles.
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0 5 10 15 20 25 30 35 40 45 50
(dI/dt) [(dV/dt) ] / Specified (dI/dt)
cc c
V
OUT=400V
(dV/dt) (V/µs)
c
Fig. 6: Relative variation of critical rate of de-
crease of main current versus reapplied dV/dt
(typical values).
1
10
100
1000
0.01 0.10 1.00 10.00
dI/dt limitation:
50A/µS
t (ms)
p
ITSM
I²t
I (A), I²t (A²s)
TSM
T initial=25°C
j
Fig. 9: Non repetitive surge peak on-state current
for a sinusoidal pulse with width tp < 10ms, and
corresponding value of I²t.
0
2
4
6
8
10
12
14
16
18
20
25 50 75 100 125
(dI/dt) [Tj] / (dI/dt) [T = 125°C]
ccj
T (°C)
j
VOUT=400V
Fig. 7: Relative variation of critical rate of decrease
of main current versus junction temperature.
ACS120-7SB/SFP/ST
8/11
0
10
20
30
40
50
60
70
80
90
100
0 5 10 15 20 25 30 35 40
DPAK
S(cm²)
Rth (°C/W)
(j-a)
Fig. 11: Thermal resistance junction to ambient
versus copper surface under tab (printed circuit
board FR4, copper thickness: 35µm)
ACS 1 20 - 7 S X
AC Switch
Number of switches
I
20 = 2.0A
T(RMS)
V
7 = 700V
DRM
Gate Sensitivity
S= 10mA
Package
B = DPAK
FP = TO-220FPAB
T = TO-220AB
ORDERING INFORMATION
0.01
0.10
1.00
10.00
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
V (V)
TM
T max. :
V =0.85V
R =200m
jto
dΩ
Tj=25°C
Tj=125°C
I (A)
TM
Fig. 10: On-state characteristics (maximum
values).
ACS120-7SB/SFP/ST
9/11
PACKAGE OUTLINE MECHANICAL DATA
DPAK
REF. DIMENSIONS
Millimeters Inches
Min. Max Min. Max.
A 2.20 2.40 0.086 0.094
A1 0.90 1.10 0.035 0.043
A2 0.03 0.23 0.001 0.009
B 0.64 0.90 0.025 0.035
B2 5.20 5.40 0.204 0.212
C 0.45 0.60 0.017 0.023
C2 0.48 0.60 0.018 0.023
D 6.00 6.20 0.236 0.244
E 6.40 6.60 0.251 0.259
G 4.40 4.60 0.173 0.181
H 9.35 10.10 0.368 0.397
L2 0.80 typ. 0.031 typ.
L4 0.60 1.00 0.023 0.039
V2 0° 8° 0° 8°
6.7
6.7
3
3
1.61.6
2.32.3
FOOT PRINT
DPAK
ACS120-7SB/SFP/ST
10/11
PACKAGE OUTLINE MECHANICAL DATA
TO-220FPAB
H
L3
L2
L4
L6
G
G1 F
F1
L5
D
E
L7
A
B
Dia
F2
REF.
DIMENSIONS
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
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
ACS120-7SB/SFP/ST
11/11
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implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice. This publication supersedes and replaces all information previously supplied.
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proval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics
© 2003 STMicroelectronics - Printed in Italy - All rights reserved.
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PACKAGE OUTLINE MECHANICAL DATA
TO-220AB
A
C
D
L7
Dia
L5
L6
L9
L4
F
H2
G
G1
L2 F2
F1
E
M
REF. DIMENSIONS
Millimeters Inches
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 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
M 2.6 typ. 0.102 typ.
Diam. 3.75 3.85 0.147 0.151
Ordering type Marking Package Weight Base qty Delivery mode
ACS120-7SB ACS1207S DPAK 0.3 g 75 Tube
ACS120-7SB-TR ACS1207S DPAK 0.3 g 2500 Tape & reel
ACS120-7SFP ACS1207S TO-220FPAB 2.4 g 50 Tube
ACS120-7ST ACS1207S TO-220AB 2.3 g 250 Bulk
■Epoxy meets UL94,V0
OTHER INFORMATION
