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ACS120-7SB-ACS120-7ST
AC LINE SWITCH
ACS120-7SB/SFP/STAC LINE SWITCH Blocking voltage: VDRM /VRRM= +/-700V Avalanche controlled: VCL typ= 1100V Nominal conducting current: IT(RMS) =2A Gate triggering current: IGT <10mA Switch integrated driver High noise immunity: static dV/dt >500V/μs
FEATURESThe ACS120 belongsto the AC line switch family
built around the ASD™ concept. This high perfor-
mance switch circuitis ableto controla loadupto2
The ACS™ switch embedsa high voltage clamp-
ing structureto absorb the inductive turnoff energy
anda gate level shifter driverto separate the digital
controller from the main switch.Itis triggered with negative gate current flowing outof the gate pin.
DESCRIPTION Needs no more external protection snubberor
varistor Enables equipmentto meet IEC 61000-4-5 Reduces component countupto80% Interfaces directly with the microcontroller Eliminates any gate kick back on the
microcontroller Allows straightforward connection of several
ACS™on same cooling pad.
BENEFITS
FUNCTIONAL DIAGRAMASD™ Switch Family AC static switchingin appliance control systems Driveof low power high inductiveor resistive
loads like relay, valve, solenoid, dispenser pump, fan, micro-motor defrost heater
MAIN APPLICATIONS
ACS120-7SB/SFP/ST
Note1: accordingtotest describedby IEC61000-4-5 standard& Figure3.
ABSOLUTE RATINGS (limiting values)
For either positiveor negative polarityof pin OUT voltagein respectto pin COM voltage
GATE CHARACTERISTICS (maximum values)= Copper surface under Tab
THERMAL RESISTANCES
ACS120-7SB/SFP/ST
ELECTRICAL CHARACTERISTICSFor either positiveor negative polarityof pin OUT voltagein respectto pin COM voltage.
PARAMETER DESCRIPTION
ACS120-7SB/SFP/STThe ACS120 deviceis well adapted to Washing machine, dishwasher, tumble drier, refrigerator,
air-conditioning systems, and cookware.It has been designed especiallyto switch on&off low power loads
suchas solenoid, valve, relay, dispenser, micro-motor, pump, fan and defrost heaters.
Pin COM: Common drive referenceto connectto the power line neutral
PinG: Switch Gate inputto connectto the digital controller
Pin OUT: Switch Outputto connectto the load
This ACS™ switchis triggered witha negative gate current flowing outof the gate pinG.It canbe drivendi-
rectlyby the digital controller througha resistoras shownon the typical application diagram.
Thankstoits thermal and turnoff commutation performances, the ACS120 switchis ableto drive withno
turnoff additional snubberan inductive loadupto2A.
LINE SWITCH BASIC APPLICATION
TYPICAL APPLICATION DIAGRAM the endof the last conduction half-cycle, the load current reaches the holding current levelIH, and the
ACS™ switch turns off. Becauseof the inductanceLof the load, the current flows then through the ava-
lanche diodeD and decreases linearlyto zero. During this time, the voltage across the switchis limitedto
the clamping voltage VCL.
The energy storedin the inductanceof the load dependson the holding currentIH and the inductance (up10 H);it can reach about10 mJ andis dissipatedin the clamping diode section. The ACS switch sustains
the turnoff energy becauseits clamping sectionis designedfor that purpose.
HIGH INDUCTIVE SWITCH-OFF OPERATION
ACS120-7SB/SFP/ST
Fig.A: Turn-off operationof the ACS120 switch
with an electro-valve: waveformof the pin OUT
current IOUT and voltage VOUT.
Fig.B: ACS120 switch static characteristic.
The ACS120 switchis ableto sustain safely the AC line transient voltages eitherby clamping the low en-
ergy spikesorby breaking over under high energy shocks, even with high turn-on current rises.
The test circuitof the figureCis representativeof the final ACS application andis also usedto stress the
ACS switch accordingto the IEC 61000-4-5 standard conditions. Thanksto the load, the ACS switch sus-
tains the voltage spikesupto2 kV above the peak line voltage.It will break over safely evenon resistive
load where the turnon current riseis highas shownon figureD. Such non repetitive test canbe done10
timeson each AC line voltage polarity.
LINE TRANSIENT VOLTAGE RUGGEDNESS
Fig. C: Overvoltage ruggedness test circuit
for resistive and inductive loads accordingto
IEC61000-4-5 standards.
Fig.D: Current and Voltageof the ACS120 dur-
ing IEC61000-4-5 standard test with R,L&VPP.
ACS120-7SB/SFP/STMaximum power dissipationvs RMSon state current.
RMS on-state currentvs ambient temperature, case temperature
Relative variationof thermal impedance junctionto ambientvs pulse duration and package
Relative variationof gate trigger currentvs junction temperature
Relative variationof holding, latching and gate currentvs junction
Relative variationof dV/dtvsTj
Relative variationof (dV/dt)cvs (di/dt)c
Surge peak on-state currentvs numberof cycles
Non repetitive surge peak on-state currentfora sinusoidal pulse with tp<10ms, and correspondingofI²t.
On-state characteristics (maximal values)
Thermal resistance junctionto ambientvs copper surface under tab (DPAK)
Relative variationof critical (di/dt)cvs junction temperature
OTHER FIGURES0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
P(W)
Fig.1: Maximum power dissipation versus RMS
on-state current.
2.4 25 50 75 100 125
(A)T(RMS)
Fig. 2-1: RMS on-state current versus case
temperature.
0.01.8 25 50 75 100 125
(A)T(RMS)
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
K=[Zth/Rth]
Fig.3: Relative variationof thermal impedance
versus pulse duration.
