ACS102-5Tx ® ASD™ AC Switch Family AC LINE SWITCH PRELIMINARY DATASHEET MAIN APPLICATIONS n AC on-off static switching in appliance control systems n Drive of low power high inductive or resistive loads like - relay, valve, solenoid, dispenser - pump, fan, micro-motor - low power lamp bulb, door lock OUT G FEATURES n n n n n n COM TO92 ACS102-5TA Blocking voltage : VDRM / VRRM = 500V Clamping voltage : VCL = 600 V Nominal current : IT(RMS) = 0.2 A Gate triggering current : IGT < 5 mA Switch integrated driver SO-8 package: - drive reference COM connected to 2 cooling pins - 3 mm creepage distance from pin OUT to other pins NC COM COM G NC OUT NC NC BENEFITS n n n n n n Needs no more external protection snubber or varistor Enables equipment to meet IEC 1000-4-5 & IEC 335-1 Reduces component count by up to 80 % Interfaces directly with a microcontroller Eliminates any stressing gate kick back on microcontroller Allows straightforward connection of several ACS on same cooling pad SO-8 ACS102-5T1 NC: Not Connected FUNCTIONAL DIAGRAM OUT ACS102 DESCRIPTION The ACS102 belongs to the AC line switch family built around the ASD concept. This high performance 5 mA switch circuit is able to control an up to 0.3 A load. The ACS switch embeds a high voltage clamping 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. S ON D COM December 1999 - Ed: 4B G 1/8 ACS102-5Tx ABSOLUTE RATINGS (limiting values) Symbol Parameter VDRM / VRRM Value Unit Tj = 25 °C 500 V TO92 Tamb = 75 °C 0.2 A SO-8 Tamb = 75 °C 0.2 A 7.3 A Repetitive peak off-state voltage RMS on-state current full cycle sine wave 50 to 60 Hz IT(RMS) ITSM Non repetitive surge peak on-state current Tj initial = 25°C, full cycle sine wave F =50 Hz F =60 Hz 8 A dI/dt Critical rate of rise of on-state current IG = 10mA, tr = 100ns F =120 Hz 20 A/µs VPP Non repetitive line peak pulse voltage note 1 Tstg Storage temperature range Tj Operating junction temperature range Tl Maximum lead temperature for soldering during 10s 2 kV - 40 to + 150 °C 0 to + 110 °C 260 °C Value Unit 0.1 W note 1 : according to test described by IEC 1000-4-5 standard & Figure 4. SWITCH GATE CHARACTERISTICS (maximum values) Symbol Parameter Average gate power dissipation PG (AV) IGM Peak gate current (tp = 20µs) 1 A VGM Peak positive gate voltage (respect to the pin COM) 5 V THERMAL RESISTANCES Symbol Parameter Rth (j-a) Junction to ambient Rth (j-l) Junction to leads for full AC line cycle conduction Value Unit TO92 150 °C/W SO-8 150 °C/W TO92 60 °C/W Values Unit 5 mA ELECTRICAL CHARACTERISTICS For either positive or negative polarity of pin OUT voltage respect to pin COM voltage Symbol Test Conditions IGT VOUT=12V (DC) RL=140Ω Tj=25°C MAX VGT VOUT=12V Tj=25°C MAX 0.9 V VGD VOUT=VDRM RL=3.3kΩ Tj=110°C MIN 0.2 V IOUT= 100mA gate open Tj=25°C TYP 20 mA MAX tbd IH IL (DC) RL=140Ω IG= 20mA Tj=25°C TYP 25 MAX tbd Tj=25°C MAX 1.2 V Tj=25°C MAX 2 µA Tj=110°C MAX 50 VTM IOUT = 0.3A IDRM IRRM VOUT = VDRM VOUT = VRRM dV/dt VOUT=400V gate open Tj=110°C MIN 300 V/µs Turn off = 10ms, (dV/dt)c = 5V/µs Tj=110°C MIN 0.1 A/ms (dI/dt)c tp=380µs Turn off = 20ms, (dV/dt)c = 10V/µs VCL ICL = 1mA tbd = to be defined 2/8 mA tp=1ms 0.15 Tj=25°C TYP 600 V ACS102-5Tx PARAMETER DESCRIPTION Parameter Symbol Parameter Description IGT Gate triggering current VGT Gate triggering voltage VGD Non triggering voltage IH Holding current IL Latching current VTM On state voltage IDRM / IRRM Forward or reverse leakage current dV/dt Static pin OUT voltage rise (dl/dt)C Turn off current rate of decay VCL Clamping voltage AC LINE SWITCH BASIC APPLICATION The ACS102 device is well adapted to washing machine, dish washer, tumble drier, refrigerator, water heaters, and cookware. It has been designed especially to switch on & off low power loads such as solenoid, valve, relay, dispenser, micro-motor, pump, fan, door lock, and low wattage lamps bulbs. Pin COM : Common drive reference to connect to the power line neutral Pin G : Switch Gate input to connect to the digital controller through a resistor Pin OUT : Switch Output to connect to the load This ACS switch is triggered with a negative gate current flowing out of the gate pin G. It can be driven directly by the digital controller through a resistor as shown on the typical application diagram. No protection device (zener or capacitor) are required between gate and COM terminals. The SO-8 version allows to connect several ACS102 devices on the same cooling PCB pad which is the COM pin. In appliances systems, the ACS102 switch intends to drive low power load in full cycle ON / OFF mode. The turn off commutation characteristics of these loads are described in table 1. Thanks to its thermal and turn off commutation performances, the ACS102 switch is able to drive with no turn off aid snubber a load up to 0.2 A (door lock, lamp, relay, valve & micro motor) when this load has to switch off within one half AC line cycle, and up to 0.3 A (pump, fan) when this load can switch off within one full AC line cycle. Table 1: Low power load turn off commutation requirement (230V AC applications). (dI/dt)c IRMS (dV/dt)c TURN-OFF DELAY POWER FACTOR LOAD (A/ms) (V/µs) (ms) Door lock, lamp < 0.2 1 < 0.1 < 0.15 < 10 Relay Valve Dispenser Micro-motor < 0.2 > 0.7 < 0.1 <5 < 10 Pump Fan < 0.3 > 0.2 < 0.15 < 10 < 20 (A) 3/8 ACS102-5Tx TYPICAL APPLICATION DIAGRAM LOAD L AC MAINS L N R OUT S ACS102 ON D COM G ST 72 MCU - Vcc HIGH INDUCTIVE SWITCH-OFF OPERATION At the end of the last conduction half-cycle, the load current reaches the holding current level IH, and the ACS™ switch turns off. Because of the inductance L of the load, the current flows through the avalanche diode D and decreases linearly to zero. During this time, the voltage across the switch is limited to the clamping voltage VCL. The energy stored in the inductance of the load depends on the holding current IH and the inductance (up to 10 H); it can reach about 20 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. Fig 1: Turn-off operation of the ACS102 switch with an electro valve: waveform of the gate current IG, pin OUT current IOUT & voltage VOUT. Fig 2: ACS102 switch static characteristic. IOUT IOUT (10 mA/div) VCL = 650V IH IH VOUT VCL VOUT (200V/div) Time 4/8 (400µs/div) ACS102-5Tx AC LINE TRANSIENT VOLTAGE RUGGEDNESS The ACS102 switch is able to sustain safely the AC line transient voltages either by clamping the low energy spikes or by breaking over under high energy shocks, even with high turn-on current rates of increase. The test circuit of the figure 3 is representative of the final ACS application and is also used to stress the ACS switch according to the IEC1000-4-5 standard conditions. Thanks to the load, the ACS switch sustains the voltage spikes up to 2 kV above the peak line voltage. It will breaks over safely even on resistive load where the turn on current rate of increase is high as shown on figure 4. Such non repetitive test can be done 10 times on each AC line voltage polarity. Fig. 3: Overvoltage ruggedness test circuit for resistive and inductive loads according to IEC 1000-4-5 standard. R = 150Ω, L = 5µH, VPP = 2kV. R Fig. 4: Current and Voltage of the ACS during IEC 1000-4-5 standard test with R = 150Ω, L = 5µH & VPP = 2kV. L Vout (200 V/div) Iout (2.5 A/div) OUT AC LINE & ACSxx S VAC + V PP SURGE VOLTAGE GENERATOR ON D COM G dI/dt = 70 A/µs RG= 220Ω Fig 5: Relative variation of gate trigger current versus junction temperature Fig 6: Relative variation of holding & latching currents versus junction temperature IH[Tj]/IH[Tj=25°C] & IL[Tj]/IL[Tj=25°C] IGT[Tj]/IGT[Tj=25°C] 2.00 2.0 1.75 1.8 1.6 1.50 1.4 1.25 1.2 1.00 1.0 0.75 0.8 0.6 0.50 0.4 0.25 0.00 Tj(°C) 0 25 50 0.2 75 100 125 0.0 Tj(°C) 0 25 50 75 100 125 5/8 ACS102-5Tx Fig 7: Typical on state characteristics @ Tj max VTO = 0.85 V & RT = 0.40 Ω (maximum values) Pon = V TO . 2. 2 . I T ( RMS ) Π + RT x I T ( RMS ) 2 Fig 8: Maximum RMS switch current versus ambient temperature on inductive load (PF>0.1) and a low repetitive rate (F < 0.1 Hz) for both TO92 and SO8. Iout_m (A) IT(RMS) (A) 2 0.4 Full cycle turn off delay 1 0.8 0.6 0.5 0.4 0.3 Half cycle turn-off delay 0.3 0.2 0.2 0.1 0.1 Tamb (°C) 0.07 0.05 0.75 Von (V) 1 0 1.25 0 1.5 Fig. 9-1: Relative variation of the junction to ambient thermal impedance versus conducting pulse duration for the SO8. Standard foot print with 35µm copper layout thickness. 10 20 30 40 50 80 90 100 110 120 Zth (j-a) / Rth (j-a) Zth (j-a) / Rth (j-a) 1 0.1 0.1 tp (s) 0.01 70 Fig. 9-2: Relative variation of the junction to ambient thermal impedance versus conducting pulse duration for the TO92. 1 0.01 0.001 60 0.1 1 tp (s) 10 0.01 0.001 100 0.01 0.1 1 10 ORDERING INFORMATION 6/8 ACS 1 02 AC Switch Number of Switch ITRMS 02 = 0.2 A - 5 T X VDRM 5 = 500V Gate sensistivity T = 5 mA A = TO 92 1 = SO-8 100 ACS102-5Tx PACKAGE OUTLINE MECHANICAL DATA SO-8 DIMENSIONS L REF. c1 C Millimetres Min. Typ. Inches Max. Min. Typ. Max. a3 A a2 e b A b1 a1 S a1 1.75 0.1 0.25 a2 D M 5 F 1 0.004 0.010 E e3 8 0.069 1.65 a3 0.65 0.85 0.025 0.033 b 0.35 0.48 0.014 0.019 b1 0.19 0.25 0.007 0.010 C 0.25 0.50 0.010 0.020 0.50 c1 4 0.065 45° (typ) D 4.8 5.0 0.189 0.197 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 F 3.8 4.0 0.15 0.157 L 0.4 1.27 0.016 0.050 M S 0.6 0.024 8° (max) PACKAGE FOOT PRINT SO-8 6.8 0.6 4.2 1.27 7/8 ACS102-5Tx PACKAGE OUTLINE MECHANICAL DATA TO92 Plastic DIMENSIONS REF. A a B Millimeters Min. A Typ. Max. E D Max. 0.053 4.70 C F Typ. 1.35 B C Inches Min. 0.185 2.54 0.100 D 4.40 0.173 E 12.70 0.500 F 3.70 0.146 a 0.45 0.017 Ordering type Marking Package Weight Base qty Delivery mode ACS102-5TA ACS102 TO92 0.2g 2500 Bulk ACS102-5TA-TR ACS102 TO92 0.2g 2000 Tape & reel ACS102-5T1-TR ACS102 SO-8 0.11g 2500 Tape & reel TM: ASD and ACS are trademarks of STMicroelectronics . Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics © 1999 STMicroelectronics - Printed in Italy - All rights reserved. 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