ACS402-5SB4 ® ASD™ AC Switch Family QUAD AC LINE SWITCH ARRAY MAIN APPLICATIONS n AC Line switch for appliance control systems n Drive of low power high inductive or resistive loads like: - solenoid, relay, valve, dispenser - micro-motor - door lock - low power lamp bulb - pump - fan FEATURES n 4 high voltage AC switch array n VDRM / VRRM = 500V n Avalanche controlled device IT(RMS) = 0.2 A per switch n IT(RMS) = 0.4 A for the total array n n Gate triggering current : IGT < 10 mA n Switch integrated driver DIL20 PIN OUT CONNECTION 1 BENEFITS n Miniaturizes 4 switches in 1 package. n Reduces the switch component count by up to 80%. n Needs no more external protection snubber & varistor. n Enables the equipment to meet IEC1000-4-5 standard. n Interfaces directly with the microcontroller. n Eliminates any stressing gate kick back on the microcontroller. DESCRIPTION The ACS402 belongs to the AC line switches array family built around the ASD™ concept. This high performance planar technology device includes 4 bi-directional a.c. switches able to control an 0.2 A resistive or inductive load. OUT1 G1 OUT2 G2 OUT3 G3 OUT4 G4 COM COM note : pins 1, 3, 5, 7, 9, 12, 14, 16, 18, 20 not connected. Each ACS™ switch integrates a high voltage clamping structure to absorb the inductive turn off energy and a gate level shifter driver to separate the digital controller from each main switch. It is triggered with a negative gate current flowing out of the gate pin. Note: For further technical information, please refer to the Application note AN1172 FUNCTIONAL DIAGRAM OUT1 OUT3 OUT2 OUT4 ACS402 S1 S2 ON ON D1 Com November 1999 - Ed: 3B S3 ON ON D2 G1 S4 D3 G2 D4 G3 G4 1/6 ACS402-5SB4 ABSOLUTE RATINGS (limiting values) Symbol Parameter VDRM VRRM Repetitive peak off-state voltage IT(RMS) RMS on-state current full cycle sine wave 50 to 60 Hz ITSM dI/dt Value Unit 500 V Tj = 25 °C per switch Tamb = 90 °C 0.2 A total array Tamb = 75 °C 0.4 A A Non repetitive surge peak on-state current Tj initial = 25°C, full cycle sine wave F =50 Hz 5 F =60 Hz 5.5 A Critical rate of rise of on-state current IG = 20mA with tr = 100ns Repetitive F =120 Hz note 1 20 A/µs VPP Non repetitive line peak pulse voltage 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 3. SWITCH GATE CHARACTERISTICS (maximum values) Symbol PG (AV) Parameter Average gate power dissipation IGM Peak gate current (tp = 20µs) 1 A VGM Peak positive gate voltage (respect to the pin COM) 5 V Value Unit 90 °C/W THERMAL RESISTANCE Symbol Rth (j-a) Parameter Junction to ambient ELECTRICAL CHARACTERISTICS PER SWITCH For either positive or negative polarity of pin OUT1, OUT2, OUT3, OUT4 voltage respect to pin COM voltage Symbol IGT VD = 12V (DC) RL = 140Ω (DC) RL = 140Ω Values Unit Tj=25°C MAX 10 mA Tj=25°C MAX 1 V VGT VD = 12V VGD VOUT = VDRM RL = 3.3kΩ Tj=110°C MIN 0.2 V IH IOUT = 100mA gate open Tj=25°C TYP 25 mA MAX 60 mA TYP 30 mA MAX 65 mA Tj=25°C MAX 1.1 V Tj=25°C MAX 2 µA Tj=110°C MAX 50 µA VOUT = 400V gate open Tj=110°C MIN 500 V/µs (dVOUT/dt)c = 10V/µs Tj=110°C MIN 0.1 A/ms ICL = 1mA Tj=25°C TYP 600 V IL IG = 20mA VTM IOUT = 0.3A IDRM IRRM VOUT = VDRM VOUT = VRRM dV/dt (dI/dt)c VCL 2/6 Test conditions Tj=25°C tp = 380µs tp = 1ms ACS402-5SB4 AC LINE SWITCH BASIC APPLICATION The ACS402 device is well adapted to washing machine, dishwasher, tumble drier, refrigerator, water heater and cookware. It has been designed especially to switch ON and OFF low power loads such as solenoid, valve, relay, micro-motor, pump, fan, door lock and low wattage lamp bulb. Pin COM: Common drive reference to connect to the power line neutral Pin G: Switch Gate input to connect to the digital controller Pin OUT: Switch Output to connect to the load Each 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. Note that no protection device (zener or capacitors) should be added between gates and common terminals. In appliances systems, this ACS™ switch intends to drive low power load in full cycle ON / OFF mode. The turn off commutation characteristics of these loads can be classified in 3 groups as shown in table 1. Thanks to its thermal and turn off commutation performances, each switch of the ACS402 is able to drive an inductive or resistive load up to 0.2 A with no additional turn off snubber. Table 1: Load grouping versus their turn off commutation requirement (230V AC applications). IRMS (dI/dt)c (dV/dt)c TURN-OFF DELAY (ms) POWER FACTOR LOAD (A/ms) (V/µs) < 0.3 1 0.15 0.15 < 10 < 0.6 1 0.4 0.15 < 20 Relay Valve Dispenser Micro-motor < 0.1 > 0.7 < 0.05 <5 < 10 Pump Fan < 0.2 > 0.2 < 0.1 < 10 < 10 < 0.6 > 0.2 < 0.3 < 10 < 20 (A) Door lock Lamp TYPICAL APPLICATION DIAGRAM VALVE / DISPENSER DOOR LOCK RELAY PUMP/FAN L MAINS M N OUT1 S1 S2 S3 ON ON PA0 Vcc S4 G2 D4 G3 PA1 Vss ACS402 ON D3 G1 OUT4 ON D2 D1 COM OUT3 OUT2 G4 PA2 PA3 ST72 MCU 3/6 ACS402-5SB4 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 section that is especially designed for that purpose. Fig 1: Turn-off operation of the ACS402 switch with an electro valve: waveform of the gate current IG, pin OUT current IOUT & voltage VOUT. Fig 2: ACS402 switch static characteristic. IOUT IOUT (10 mA/div) VCL = 650V IH IH VOUT VCL VOUT (200V/div) Time (400µs/div) AC LINE TRANSIENT VOLTAGE RUGGEDNESS Each ACS402 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 rises. 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 break over safely even on resistive load where the turn on current rise 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. Fig 4: Current and voltage of the ACS™ during IEC 1000-4-5 standard test with a 220Ω - 10µH load & VPP = 2kV. Vout(200 V/div) R L Iout(2 A /div) OUT AC LINE & SURGE VOLTAGE GENERATOR ACSxx S VAC + V PP ON D COM G RG= 220Ω 4/6 dI/dt= 100 A /µs ACS402-5SB4 Fig 5: Relative variation of gate trigger current versus junction temperature IH[Tj]/IH[Tj=25°C] & IL[Tj]/IL[Tj=25°C] IGT[Tj]/IGT[Tj=25°C] 2.00 Fig 6: Relative variation of holding & latching currents versus junction temperature 2.0 1.8 1.75 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 0.2 Tj(°C) 0.00 0 25 50 75 100 125 Fig 7: On state characteristics @Tj max VTO = 0.90 V & RT = 0.3 Ω (maximum values) Pon = V TO . 2. 2 . I T ( RMS ) Π + RT x I T ( RMS ) 2 0.0 Tj(°C) 0 25 50 75 100 125 Fig 8: Maximum total RMS current versus ambient temperature on an inductive load (PF>0.1) and a low repetitive rate (F<1Hz) 0.7 IOUT (A) 0.6 5 0.5 Total Maximum RMS current 0.4 2 1 0.8 0.6 0.5 0.4 0.3 0.2 (A) 0.3 0.2 0.1 0.07 0.05 0.5 0.1 VTM (V) 0 0.75 1 1.25 1.5 1.75 2 0 20 40 60 80 100 120 Ambient Temperature (°C) Fig 9: Relative variation of thermal impedance junction to ambient versus pulse duration (epoxy printed circuit board FR4, 35µm copper layout thickness). Zth(j-a)/Rth(j-a) 1E+0 1E-1 1 switch 1E-2 4 switches tp (s) 1E-3 1E-4 1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2 5/6 ACS402-5SB4 ORDERING INFORMATION TM ACS 4 02 - Number of Switch AC Switch 5 S B 4 DIL plastic VDRM 5 = 500V 20 pins Gate Sensitivity S = 10mA ITRMS 02 = 0.2A PACKAGE MECHANICAL DATA DIL20 Plastic DIMENSIONS REF. Min. I a1 L B b b1 e F e3 Z E D 20 11 1 10 Millimeters a1 0.38 B 1.40 Typ. Max. Min. Typ. Max. 0.015 1.65 0.055 0.065 b 0.45 0.018 b1 0.25 0.010 D 26.3 1.035 E 10.90 0.430 e 2.54 e3 0.100 22.86 F 0.900 6.6 I 0.260 4.32 L 0.170 3.3 0.130 Z n Inches 1.84 0.072 Ordering type Marking Package Weight Base qty Delivery mode ACS402-5SB4 ACS402 5 DIL20 1.4g. 19 Tube Epoxy meets UL94,V0 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. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 6/6