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ACS120-7SB/SFP/ST
April 2003 - Ed: 2A
AC LINE SWITCH
DPAK
ACS120-7SB
s
Blocking voltage : V
DRM
/ V
RRM
= +/-700V
s
Avalanche controlled : V
CL
typ = 1100 V
s
Nominal conducting current : I
T(RMS)
= 2A
s
Gate triggering current : I
GT
< 10 mA
s
Switch integrated driver
s
High noise immunity : static dV/dt >500V/s
FEATURES
The ACS120 belongs to the AC line switch family
built around the ASDTM concept. This high perfor-
mance switch circuit is able to control a load up to 2
A.
The ACSTM switch embeds a high voltage clamp-
ing structure to absorb the inductive turn off energy
and a gate level shifter driver to separate the digital
controller from the main switch. It is triggered with
a negative gate current flowing out of the gate pin.
DESCRIPTION
COM
OUT
G
s
Needs no more external protection snubber or
varistor
s
Enables equipment to meet IEC 61000-4-5
s
Reduces component count up to 80 %
s
Interfaces directly with the microcontroller
s
Eliminates
any
gate
kick
back
on
the
microcontroller
s
Allows straightforward connection of several
ACSTM on same cooling pad.
BENEFITS
OUT
COM
G
S
D
ON
FUNCTIONAL DIAGRAM
ASDTM
AC Switch Family
TO-220FPAB
ACS120-7SFP
OUT
COM
G
s
AC static switching in appliance control systems
s
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
V
DRM
/ V
RRM
Repetitive peak off-state voltage
Tj = -10 C
700
V
I
T(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
I
TSM
Non repetitive surge peak on-state current
Tj initial = 25C, full cycle sine wave
F =50 Hz
20
A
F =60 Hz
11
A
I
2
t
Fusing capability
tp = 10ms
2.2
As
dI/dt
Repetitive on-state current critical rate
of rise I
G
= 10mA (tr < 100ns)
Tj = 125C
F = 120 Hz
50
A/
s
V
PP
Non repetitive line peak pulse voltage
note 1
2
kV
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
P
G (AV)
Average gate power dissipation
0.1
W
I
GM
Peak gate current (tp = 20s)
1
A
V
GM
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 = 0.5cm
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
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Symbol
Test Conditions
Values
Unit
I
GT
V
OUT
=12V (DC)
R
L
=140
QII - QIII
Tj=25C
MAX
10
mA
V
GT
V
OUT
=12V (DC)
R
L
=140
QII - QIII
Tj=25C
MAX
1
V
V
GD
V
OUT
=V
DRM
R
L
=3.3k
Tj=125C
MIN
0.15
V
I
H
I
OUT
= 100mA gate open
Tj=25C
MAX
45
mA
I
L
I
G
= 20mA
Tj=25C
MAX
65
mA
V
TM
I
OUT
= 2.8A
tp=380
s
Tj=25C
MAX
1.3
V
V
TO
Tj=125C
MAX
0.85
V
Rd
Tj=125C
MAX
200
m
I
DRM
/
I
RRM
V
OUT
= 700V
Tj=25C
MAX
2
A
Tj=125C
MAX
200
dV/dt
V
OUT
=460V gate open
Tj=110C
MIN
500
V/
s
(dI/dt)c
(dV/dt)c = 20V/
s
Tj=125C
MIN
1
A/ms
V
CL
I
CL
= 1mA
tp=1ms
Tj=25C
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
I
GT
Triggering gate current
V
GT
Triggering gate voltage
V
GD
Non-triggering gate voltage
I
H
Holding current
I
L
Latching current
V
TM
Peak on-state voltage drop
V
TO
On state threshold voltage
Rd
On state dynamic resistance
I
DRM
/ 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
V
CL
Clamping voltage
I
CL
Clamping current
PARAMETER DESCRIPTION
ACS120-7SB/SFP/ST
4/11
The ACS120 device is well adapted to Washing machine, dishwasher, tumble drier, refrigerator,
air-conditioning systems, and cookware. It has been designed especially to switch on & off low power loads
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
This ACSTM switch is triggered with a negative gate current flowing out of the gate pin G. It can be driven 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 I
H
, and the
ACSTM 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 V
CL
.
The energy stored in the inductance of the load depends on the holding current I
H
and the inductance (up
to 10 H); it can reach about 10 mJ and is dissipated in the 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 I
OUT
and voltage V
OUT
.
V
OUT
I
OUT
V
CL
I
H
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
V
AC
+ V
PP
SURGE VOLTAGE
AC LINE & GENERATOR
RG = 220
COM
OUT
G
S
D
ON
ACSxx
Fig. C: Overvoltage ruggedness test circuit
for resistive and inductive loads according to
IEC61000-4-5 standards.
R = 150
, L = 10H, V
PP
= 2kV.
Fig. D: Current and Voltage of the ACS120 dur-
ing IEC61000-4-5 standard test with R, L & V
PP
.
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