ACS108-5Sx. ASD AC Switch Family AC LINE SWITCH ACS108 MAIN APPLICATIONS FEATURES

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1 FEATURES V RM / V RRM = 500V Avalache cotrolled device I T(RMS) = 0.8 A ate triggerig curret : I T <10mA Switch itegrated driver rive referece coected to the SOT223 tab BENEFITS AS AC Switch Family MAIN APPLICATIONS AC Lie switch for appliace cotrol systems rive of low power high iductive or resistive loads like: - soleoid, relay, valve, dispeser - micro-motor - door lock - low power lamp bulb - pump - fa Needs o more exteral protectio subber & varistor. Eables the equipmet to meet IEC stadard. Allows straightforward coectio of several SOT223 devices o the same coolig pad. Reduces the switch compoet cout by up to 80%. Iterfaces directly with the microcotroller. Elimiates ay stressig gate kick back o the microcotroller. ACS108-5Sx AC LINE SWITCH FUNCTIONAL IARAM TO92 ACS108-5SA SOT223 ACS108-5SN ESCRIPTION The ACS108 belogs to the AC lie switches built aroud the AS cocept. This high performace full plaar techology device is able to cotrol a 0.8 A load. The ACS switch embeds a high voltage clampig structure to absorb the iductive tur-off eergy ad a gate level shifter driver to separate the digital cotroller from the mai switch. It is triggered with a egative gate curret flowig out of the gate pi. ACS108 S ON Note: For further techical iformatio, please refer to the Applicatio ote AN1172. November Ed: 3B 1/7

2 ABSOLUTE RATINS (limitig values) 2/7 Symbol Parameter Value Uit V RM Repetitive peak off-state voltage Tj = 25 C 500 V V RRM I T(RMS) RMS o-state curret full cycle sie TO92 Tlead = 60 C 0.8 A wave 50 to 60 Hz TO92 Tamb = 60 C 0.3 A SOT223 Tamb = 55 C 0.8 A I TSM No repetitive surge peak o-state curret F =50 Hz 7.3 A Tj iitial = 25 C, full cycle sie wave F =60 Hz 8 A di/dt Critical rate of rise of o-state curret Repetitive 20 A/µs I = 20mA with tr = 100s F =120 Hz V PP No repetitive lie peak pulse voltage ote 1 2 kv Tstg Storage temperature rage - 40 to C Tj Operatig juctio temperature rage 0 to C Tl Maximum lead temperature for solderig durig 10s 260 C ote 1 : accordig to test described by IEC stadard & Figure 3. SWITCH ATE CHARACTERISTICS (maximum values) Symbol Parameter Value Uit P (AV) Average gate power dissipatio 0.1 W I M Peak gate curret (tp = 20 µ s) 1 A VM Peak positive gate voltage (respect to the pi ) 5 V THERMAL RESISTANCES Symbol Parameter Value Uit Rth (j-a) Juctio to ambiet TO C/W SOT223 (*) 60 C/W Rth (j-l) Juctio to lead for full AC lie cycle coductio TO92 60 C/W Rth (j-t) Juctio to tab for full AC lie cycle coductio SOT C/W (*) : with 5cm2 copper (e=35µm) surface uder tab ELECTRICAL CHARACTERISTICS For either positive or egative polarity of pi voltage respect to pi voltage Symbol Test Coditios Values Uit IT V=12V (C) RL=140Ω Tj=25 C MAX 10 ma VT V=12V (C) RL=140Ω Tj=25 C MAX 1 V V V =V RM R L =3.3kΩ Tj=110 C MIN 0.2 V I H I = 100mA gate ope Tj=25 C TYP 25 ma MAX 60 ma I L I = 20mA Tj=25 C TYP 30 ma MAX 65 ma VTM I = 1.1A tp=380µs Tj=25 C MAX 1.3 V I RM V =V RM Tj=25 C MAX 2 µa IRRM V = VRRM Tj=110 C MAX 50 µa dv/dt V =400V gate ope Tj=110 C MIN 500 V/µs (di/dt)c (dv /dt)c=10v/µs Tj=110 C MIN 0.1 A/ms V CL ICL = 1mA tp=1ms Tj=25 C TYP 600 V

3 AC LINE SWITCH BASIC APPLICATION The ACS108 device is well adapted to washig machie, dishwasher, tumble drier, refrigerator, water heater ad cookware. It has bee desiged especially to switch ON ad OFF low power loads such as soleoid, valve, relay, micro-motor, fa, pump, door lock ad low wattage lamp bulb. Pi : Commo drive referece to coect to the power lie eutral Pi : Switch ate iput to coect to the digital cotroller Pi : Switch Output to coect to the Load The ACS switch is triggered with a egative gate curret flowig out of the gate pi. It ca be drive directly by the digital cotroller through a resistor as show o the typical applicatio diagram. Note that o protectio device (zeer or capacitor) should be added betwee gates ad commo termials. The SOT223 versio allows several ACS108 devices to be coected o the same coolig PCB pad which is the pi : this coolig pad ca be the reduced, ad the prited circuit layout is simplified. I appliaces systems, the ACS108 switch iteds to drive low power load i full cycle ON / OFF mode. Whe the gate sigal is removed, the load is switched off after a delay time that is equal to oe half lie cycle or oe full lie cycle depedig o the load drive strategy. The tur off commutatio characteristics of these loads ca be classified i 3 groups as show i table 1. Thaks to its thermal ad tur off commutatio performaces, the ACS108 switch is able to drive with o additioal tur off subber, a resistive or iductive load up to 0.2 A (whe this load has to switch off withi oe half AC lie cycle), a iductive load up to 0.6 A or a resistive load up to 0.8 A (whe this load has to switch off withi oe full AC lie cycle). Table 1: Load groupig versus their tur off commutatio requiremet (230V AC applicatios). IRMS (di/dt)c (dv/dt)c TURN-FF LOA POWER ELAY FACTOR (A) (A/ms) (V/µs) (ms) oor Lock Lamp < <10 < < 20 Relay Valve ispeser Micro-motor < 0.1 > 0.7 < 0.05 < 5 < 10 Pump Fa < 0.2 > 0.2 < 0.1 < 10 < 10 < 0.6 > 0.2 < 0.3 < 10 < 20 TYPICAL APPLICATION IARAM L AC MAINS N LOA L R S ON ACS108 ST 72 MCU - Vcc 3/7

4 INUCTIVE SWITCH-OFF OPERATION At the ed of the last coductio half-cycle, the load curret reaches the holdig curret level I H, ad the ACS switch turs off. Because of the iductace L of the load, the curret flows through the avalache diode ad decreases liearly to zero. urig this time, the voltage across the switch is limited to the clampig voltage V CL. The eergy stored i the iductace of the load depeds o the holdig curret I H ad the iductace (up to 10 H); it ca reach about 20 mj ad is dissipated i the clampig sectio that is especially desiged for that purpose. Fig 1: Tur-off operatio of the ACS108 switch with a electro valve: waveform of the gate curret I, pi curret I & voltage V. Fig 2: ACS108 switch static characteristic. I (10 ma/div) VCL = 650V I IH IH V V (200V/div) VCL Time (400µs/div) AC LINE TRANSIENT VOLTAE RUENESS The ACS108 switch is able to sustai safely the AC lie trasiet voltages either by clampig the low eergy spikes or by breakig over uder high eergy shocks, eve with high tur-o curret rises. The test circuit of the figure 4 is represetative of the fial ACS applicatio ad is also used to stress the ACS switch accordig to the IEC stadard coditios. Thaks to the load, the ACS switch sustais the voltage spikes up to 2 kv above the peak lie voltage. It will break over safely eve o resistive load where the tur o curret rise is high as show o figure 4. Such o repetitive test ca be doe 10 times o each AC lie voltage polarity. Fig 3: Overvoltage ruggedess test circuit for resistive ad iductive loads accordig to IEC stadard. R = 150Ω, L=5µH, V PP = 2kV. Fig 4: Curret ad voltage of the ACS durig IEC stadard test with a 220Ω -10µH load & V PP = 2kV. R L Vout (200 V/div) Iout (2 A/div) ACLINE & SUREVOLTAE ENERATOR VAC +VPP S ON ACSxx di/dt = 100 A/µs R= 220Ω 4/7

5 Fig 5: Relative variatio of gate trigger curret versus juctio temperature 2.00 IT[Tj]/IT[Tj=25 C] Tj( C) Fig 6: Relative variatio of holdig & latchig currets versus juctio temperature IH[Tj]/IH[Tj=25 C] & IL[Tj]/IL[Tj=25 C] Tj( C) Fig 7: O state max V TO = 0.90 V & R T = 0.3 Ω (maximum values) 2 Po = VTO I T ( RMS ) Π + RT x I T( RMS ) I (A) 5 Fig 8: Maximum RMS switch curret versus ambiet temperature o iductive load (PF>0.1) ad a low repetitive rate (F < 1 Hz) (*): with 5cm 2 copper (e=35µm) surface uder tab VTM (V) IT(RMS) (A) SOT223 (*) 0.6 TO Tamb ( C) Fig 9-1: Relative variatio of the juctio to ambiet thermal impedace versus coductig pulse duratio for the SOT223 Stadard foot prit with 35µm copper layout thickess. Fig 9-2: Relative variatio of the juctio to ambiet thermal impedace versus coductig pulse duratio for the TO92. Zth(j-a)/Rth(j-a) Zth(j-a)/Rth(j-a) tp (s) E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2 tp (s) E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2 5/7

6 Fig. 10: SOT223 thermal resistace juctio to ambiet versus copper surface uder tab (Epoxy prited circuit board FR4, copper thickess: 35µm) Rth(j-a) ( C/W) S(Cu) (cm) ORERIN INFORMATION TM ACS S A AC Switch Number of Switch VRM 5 = 500V A = TO92 N = SOT223 ITRMS 08 = 0.8A ate Sesitivity S = 10mA PACKAE MECHANICAL ATA SOT223 IMENSIONS A A1 B e1 B1 V c REF. Millimeters Iches Mi. Typ. Max. Mi. Typ. Max. A A B B c e H E e E H e V 10 max 6/7

7 PACKAE MECHANICAL ATA SOT223 PACKAE MECHANICAL ATA TO92 Plastic IMENSIONS A REF. Millimeters Iches Mi. Typ. Max. Mi. Typ. Max. a A B C B C F E E F a Orderig type Markig Package Weight Base qty elivery mode ACS108-5SA ACS08/5S TO92 0.2g 2500 Bulk ACS108-5SN ACS/085S SOT g 1000 Tape & reel TM: AS ad ACS are trademarks of STMicroelectroics. Iformatio furished is believed to be accurate ad reliable. However, STMicroelectroics assumes o resposibility for the cosequeces of use of such iformatio or for ay ifrigemet of patets or other rights of third parties which may result from its use. No licese is grated by implicatio or otherwise uder ay patet or patet rights of STMicroelectroics. Specificatios metioed i this publicatio are subject to chage without otice. This publicatio supersedes ad replaces all iformatio previously supplied. STMicroelectroics products are ot authorized for use as critical compoets i life support devices or systems without express writte approval of STMicroelectroics. The ST logo is a registered trademark of STMicroelectroics 1999 STMicroelectroics - Prited i Italy - All rights reserved. STMicroelectroics ROUP OF PANIES Australia - Brazil - Chia - Filad - Frace - ermay - Hog Kog - Idia - Italy - Japa - Malaysia Malta - Morocco - Sigapore - Spai - Swede - Switzerlad - Uited Kigdom - U.S.A. 7/7

Symbol Parameter Value Unit Peak pulse load dump overvoltage

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