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ACST4-7SB |ACST47SBSTN/a100avaiAC POWER SWITCH
ACST4-7SFP |ACST47SFPSTN/a100avaiAC POWER SWITCH


ACST4-7SB ,AC POWER SWITCHFEATURESn Blocking voltage : V /V = +/-700VDRM RRMn Avalanche controlled : V typ = 1100 VCLn Nomina ..
ACST4-7SFP ,AC POWER SWITCHAPPLICATIONSn AC static switching in appliance control systemsOUTn Drive of low power high inductiv ..
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ACST67S. ,OVER VOLTAGE PROTECTED AC POWER SWITCHFEATURESn V /V = +/- 700VDRM RRMn Avalanche controlled devicen I =1.5 A with no heat sink and T = 4 ..
ACST6-7SG ,OVER VOLTAGE PROTECTED AC POWER SWITCH®ACST6-7SOVER VOLTAGE PROTECTEDASD™AC POWER SWITCHAC Switch FamilyMAIN
ACST6-7ST ,OVER VOLTAGE PROTECTED AC POWER SWITCHFEATURESn V /V = +/- 700VDRM RRMn Avalanche controlled devicen I =1.5 A with no heat sink and T = 4 ..
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AD8051ART , Low Cost, High Speed, Rail-to-Rail Amplifiers
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ACST4-7SB-ACST4-7SFP
AC POWER SWITCH
ACST4 Series
AC POWER SWITCH Blocking voltage: VDRM /VRRM= +/-700V Avalanche controlled: VCL typ= 1100V Nominal conducting current: IT(RMS) =4A High surge current capability: 30A for 20ms full
wave Gate triggering current: IGT<10 mAor 25mA Switch integrated driver High noise immunity: static dV/dt >500V/μs
FEATURES

The ACST4 belongsto the AC power switch family
built around the ASD™ technology. This high per-
formance deviceis adaptedto home appliancesor
inductrial systems and drives loadsupto4A.
The ACS™ switch embedsa Triac structure witha
high voltage clamping deviceto absorb the induc-
tive turn-off energy and withstand line transients
suchas those describedin the IEC61000-4-5 stan-
dards.
DESCRIPTION
Enables equipmentto meet IEC 61000-4-5 High off-state reliability with planar technology No external overvoltage protection needed Reduces the power component factor Interfaces directly with the microcontroller Direct interface with the microcontroller for the
ACST4-7S (IGT< 10mA)
BENEFITS
FUNCTIONAL DIAGRAM

ASD™ Switch Family AC static switchingin appliance control systems Driveof low power high inductiveor resistive
loads like spray pumpin dishwashers fanin air-conditioners
MAIN APPLICATIONS
ACST4 Series
Note1:
accordingtotest describedby IEC61000-4-5 standard& FigureB.
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
ACST4 Series
ELECTRICAL CHARACTERISTICS

For either positiveor negative polarityof pin OUT voltagein respectto pin COM voltage.
PARAMETER DESCRIPTION
ACST4 Series
The ACST4 device has been designedto switchon&off low power, but highly inductiveor resistive loads
suchas dishwashers spray pumps, and air-conditioners fan.
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
ACST4-7S triggering current hastobe sunk from the gate pinG. The switch can thenbe driven directlyby
logic level circuits througha resistoras shownon the typical application diagram( FigA).
Thankstoits thermal and turnoff commutation performances, the ACST4 switchis ableto drive withno
turnoff additional snubberan inductive loadupto4A. LINE SWITCH BASIC APPLICATION
TYPICAL APPLICATION DIAGRAM
(Fig.A)
The ACST4 switchis ableto sustain safely the AC line transient voltages eitherby clamping the low energy
spikesorby breaking over under high energy shocks, even with high turn-on current rises.
The test circuitof the figure2is representativeof the final ACST application andis also usedto stress the
ACST switch accordingto the IEC 61000-4-5 standard conditions. Thanksto the load, the ACST switch
sustains the voltage spikesupto2kV above the peak line voltage.It will break oversafely evenon resistive
load where the turnon current rateof rise,isas highas shownon figure3. Such non-repetitive test canbe
done10 timeson each AC line voltage polarity.
AC LINE TRANSIENT VOLTAGE RUGGEDNESS
Fig.B: Overvoltage ruggedness test circuitfor re-
sistive and inductive loads according to
IEC61000-4-5 standards.= 150Ω,L= 10μH, VPP= 2kV.
Fig. C:
Current and Voltageof the ACST4 dur-
ing IEC61000-4-5 standard test with R,L&VPP.
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
P(W)
Fig.1:
Maximum power dissipation versus RMS
on-state current.
4.5 25 50 75 100 125 (A)T(RMS)
Fig. 2-1:
RMS on-state current versus case
temperature.
ACST4 Series
2.0 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+01 1.E+02 1.E+03
K = [Zth/Rth]
Fig.3:
Relative variationof thermal impedance
versus pulse duration.
-40-30-20-100102030405060708090100110120130,I,I [Tj] / I,I,I [Tj = 25°C]GTHL GTHL
Fig.4:
Relative variationof gate trigger current,
holding current and latching versus junction
temperature (typical values). 50 75 100 125
dV/dt [Tj] / dV/dt [Tj = 125°C]
Fig.5:
Relative variationof static dV/dt versus
junction temperature.
1.2 1020 3040 5060 7080 90 100
(dI/dt)c [(dV/dt)c] / Specified (dI/dt)c
Fig. 6-1:
Relative variationof critical rateof de-
creaseof main current versus reapplied dV/dt
(typical values).
(dI/dt)c [(dV/dt)c] / Specified (dI/dt)c
1.2 5 10 15 20 25 30 35 40 45 50
Fig. 6-2:
Relative variationof critical rateof de-
creaseof main current versus reapplied dV/dt
(typical values).
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