Overvoltage protected AC switch

1 This is information on a product in full production. May 2017 DocID7297 Rev 111/20 ACST6 Overvoltage protected AC switchDatasheet - production data Figure 1. Functional diagramFeatures Triac with Overvoltage protection Low IGT (< 10 mA) TO-220 FPAB insulated package: complies with UL standards (file ref: E81734) insulation voltage: 2000 VRMSB enefits 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 standardsApplications 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 conditionerDescriptionThe ACST6 series belongs to the ACS/ACST power switch family built with (application specific discrete) technology.

2 This high performance device is suited to home appliances or industrial systems, and drives loads up to 6 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 (IGT < 10 mA) and still shows a high noise immunity complying with IEC standards such as IEC 61000-4-4 (fast transient burst test). TO-220 ABACST610-8 TTO-220 FPABACST610-8 FPD PAKACST610-8GI PAKACST610-8 RGOUTOUTCOMGOUTCOMGOUTCOMGOUTOUTCOMGCOMO UTT able 1. Device summarySymbolValueUnitIT(RMS)6 Rev 111 Characteristics Table 2. Absolute ratings (limiting values)SymbolParameterValueUnitIT(RMS)On -state rms current (full sine wave)TO-220 FPAB Tc = 92 C 6 ATO-220AB/ D2 PAK / I2 PAKTc = 106 CD2 PAK with 1cm2 copperTamb = 62 repetitive surge peak on-state current Tj initial = 25 C, ( full cycle sine wave) F = 60 Hztp = ms 47AF = 50 Hztp = 20 ms45AI2tI2t for fuse selection tp = 10 ms13A2sdI/dtCritical rate of rise on-state current IG = 2 x IGT, (tr 100 ns) F = 120 HzTj = 125 C100 A/ sVPPNon repetitive line peak pulse voltage (1)Tj = 25 C2 kV PG(AV)Average gate power dissipationTj = 125 gate power dissipation (tp = 20 s)Tj = 125 C10 WIGMPeak gate current (tp = 20 s)Tj = 125 temperature range-40 to +150 CTj Operating junction temperature range -40 to +125 CTl Maximum lead solder temperature during 10 ms (at 3 mm from plastic case)260 CVINS(RMS)

3 Insulation RMS voltage (60 seconds)TO-220 FPAB2000V1. According to test described in IEC 61000-4-5 standard and Figure 3. Electrical characteristicsSymbolTest conditionsQuadrantTjValueUnitIGT(1)VOUT = 12 V, RL = 33 I - II - III25 = 12 V, RL = 33 I - II - III25 = VDRM, RL = k I - II - III125 (2)IOUT = 500 mA25 = x IGTI - III25 = x IGTII25 (2)VOUT = 67 % VDRM, gate open125 s(dI/dt)c(2)(dV/dt)c = 15 V/ s125 = mA, tp = 1 ms25 Minimum IGT is guaranteed at 5% of IGT max2. For both polarities of OUT pin referenced to COM pinDocID7297 Rev 113/20 ACST6 Characteristics20 Table 4. Static characteristicsSymbolTest conditionsValueUnitVTM(1)IOUT = A, tp = 500 sTj = 25 = A, tp = 500 (1)Threshold voltageTj = 125 (1)Dynamic resistanceTj = 125 IDRMIRRM VOUT = VDRM/ VRRMTj = 25 ATj = 125 A1.

4 For both polarities of OUT pin referenced to COM pinTable 5. Thermal resistancesSymbolParameterValueUnitRth(j -a)Junction to ambientTO-220AB TO-220 FPAB60 C/WI2 PAK 65 Junction to ambient (soldered on 1 cm2 copper pad)D2 PAK 45 Rth(j-c)Junction to case for full cycle sine wave C/WTO-220 ABD2 PAK , I2 PAK 2. Maximum power dissipation versus RMS on-state current Figure 3. On-state RMS current versus case temperature (full cycle)0123456780123456P(W) = 180 IT(RMS)(A)180 012345670255075100125IT(RMS)(A)TC( C)TO-220 FPABTO-220 ABD PAKI PAK = 180 CharacteristicsACST64/20 DocID7297 Rev 11 Figure 4. On-state rms current versus ambient temperature(free air convection, full cycle)Figure 5. Relative variation of thermal impedance versus pulse durationIT(RMS)(A)Ta( C) =180 D2 PAK withcoppersurface = 1cm2TO-220 FPABTO220 ABI2PA KK = [Zth/ Rth] +00tp(s) + +03 Zth(j-c)Zth(j-a)TO-220 ABD PAKI PAKTO-220 FPABF igure 6.

5 Relative variation of gate trigger current (IGT) and voltage (VGT) versus junction temperature (typical values)Figure 7. Relative variation of holding current (IH) and latching current (IL) versus junction temperature (typical values) 0-2502 55 07 5100125 IGT,VGT[Tj] / IGT,VGT[Tj= 25 C ]Tj( C )IGTQ3 IGTQ1-Q 2VQ 1-Q2-Q 0-2502 55 07 5100125IH,IL[Tj] / IH,IL[Tj= 25 C ]Tj( C )ILIHF igure 8. Surge peak on-state current versus number of cyclesFigure 9. Non repetitive surge peak on-state current versus sinusoidal pulse widthITSM(A)Number of cycles010203040501101001000 Number of cyclesRepetitiveTC=106 CNon repetitiveTjinitial = 25 COne cyclet = 20 /dt limitation:100 A / sTjinitial = 25 CITS MITSM(A), I2t (A2s)tp(ms)DocID7297 Rev 115/20 ACST6 Characteristics20 Figure 10. On-state characteristics(maximum values)Figure 11.

6 Relative variation of critical rate of decrease of main current (dI/dt)c versus junction temperature110100012345 ITM(A)VTM(V)Tjmax:Vto= VRd= 80 m Tj= 125 CTj= 25 C012345678255075100125(dl/dt)c[Tj] / (dl/dt)c[Tj= 125 C]Tj( C)Figure 12. Relative variation of static dV/dt immunity versus junction temperature (gate open)Figure 13. Relative variation of leakage current versus junction temperature0123456255075100125dV/dt [Tj] / dV/dt [Tj= 125 C]Tj( C)VD=VR= 536 V255075100125 IDRM/IRRM[Tj;VDRM/VRRM] / IDRM/IRRM[Tj= 125 C; 800 V] +00Tj( C)VDRM=VRRM= 200 VVDRM=VRRM= 600 VVDRM=VRRM= 800 VDifferent blocking voltagesFigure 14. Relative variation of clamping voltage (VCL) versus junction temperature (minimum values)Figure 15. Thermal resistance junction to ambient versus copper surface under tab V[Tj] / V [Tj= 25 C] ( C) 6&X FP 5WK M D & : (SR[\ SULQWHG ERDUG )5 H&8 PApplication informationACST66/20 DocID7297 Rev 112 Application Typical application descriptionThe ACST6 device has been designed to control medium power load, such as AC motors in home appliances.]

7 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 16. Compressor control typical diagramCompressorElectronicstarterElectr onicthermostatACSTRgACSTP ower supplyAC MainsGateDriverlogical circuitry123 PTCC ompressor with integrated e-starterCompressorStartswitchRunswitchP TCRgACSTP ower supplyGateDriverACSTRgAC MainsCompressor with external electronic driveDocID7297 Rev 117/20 ACST6 Application information20 Figure 17. Universal drum motor control typical AC line transient voltage ruggednessIn comparison with standard Triacs, which are not robust against surge voltage, the ACST6 is self- protected against over-voltage, specified by the new parameter VCL.

8 The ACST6 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 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.

9 Such a non repetitive test can be done at least 10 times on each AC line voltage motorMotor directionsettingSpeed motorregulationRgAC MainsStatorMCUVcc12 VACSTR otorMCUA pplication informationACST68/20 DocID7297 Rev 11 Figure 18. Overvoltage ruggedness test circuit for resistive and inductive loads for IEC 61000-4-5 standardsFigure 19. Typical current and voltage waveforms across the ACST6 during IEC 61000-4-5 standard testAC MainsRFiltering unitRgModel of the loadRgeneSurge generatorACST62kV surgeLR = 18 , L = 2 H, Vsurge = 2 kVRg = 220 IV00 Vpeak= s voltage surge8/20 s current surgeIpeak= 120 AdI/dt = 150 A/ sDocID7297 Rev 119/20 ACST6 Ordering information scheme203 Ordering information schemeFigure 20. Ordering information schemeACS T 6 10 - 8 G TRAC switchTopologyOn-state rms currentRepetitive peak off-state voltagePackageT = Triac6 = 6 A8 = 800 VFP = TO-220 FPABT = TO-220 ABTriggering gate currentDelivery mode10 = 10 mAR = I PAKG = D PAKTR = Tape and reelBlank = TubePackage informationACST610/20 DocID7297 Rev 114 Package information Epoxy meets UL94, V0 Cooling method: by conduction (C) Recommended torque value (TO220AB, TO220 FPAB): to N mIn order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance.

10 ECOPACK specifications, grade definitions and product status are available at: ECOPACK is an ST Rev 1111/20 ACST6 Package TO-220AB package informationFigure 21. TO-220AB package outline(1)Resin gate accepted in one of the two positionsor in the symmetrical oppositesResin gate mm (1)Package informationACST612/20 DocID7297 Rev 11 Table 6. TO-220AB package mechanical typ. Rev 1113/20 ACST6 Package TO-220 FPAB package informationFigure 22. TO-220 FPAB package outline+$%'LD/ / / ) ) )'(/ * */ / Package informationACST614/20 DocID7297 Rev 11 Table 7. TO-220 FPAB package mechanical Rev 1115/20 ACST6 Package D2 PAK package informationFigure 23. D2 PAK package outlinePackage informationACST616/20 DocID7297 Rev 11 Figure 24. Footprint (dimensions in mm)Table 8. D2 PAK package mechanical 8 0 8 Rev 1117/20 ACST6 Package I2 PAK package informationFigure 25.