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ACS402-5SB4
QUAD AC LINE SWITCH ARRAY
ASDTM AC Switch Family
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 OUT1 G1
OUT2
G2
Each ACSTM 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 OUT2 OUT3 OUT4
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 ASDTM 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.
OUT3
G3
OUT4
G4
COM
COM
note : pins 1, 3, 5, 7, 9, 12, 14, 16, 18, 20 not connected.
ACS402
S1 S2 S3 S4
ON
ON
ON
ON
D1
D2
D3
D4
Com
G1
G2
G3
G4
November 1999 - Ed: 3B
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ACS402-5SB4
ABSOLUTE RATINGS (limiting values)
Symbol VDRM VRRM IT(RMS) ITSM dI/dt VPP Tstg Tj Tl Parameter Repetitive peak off-state voltage RMS on-state current full cycle sine wave 50 to 60 Hz Non repetitive surge peak on-state current Tj initial = 25C, full cycle sine wave Critical rate of rise of on-state current IG = 20mA with tr = 100ns Non repetitive line peak pulse voltage Storage temperature range Operating junction temperature range Maximum lead temperature for soldering during 10s per switch total array Tj = 25 C Tamb = 90 C Tamb = 75 C F =50 Hz F =60 Hz Repetitive F =120 Hz note 1 Value 500 0.2 0.4 5 5.5 20 2 - 40 to + 150 0 to + 110 260 Unit V A A A A A/s kV C C C
note 1 : according to test described by IEC 1000-4-5 standard & Figure 3.
SWITCH GATE CHARACTERISTICS (maximum values)
Symbol PG (AV) IGM VGM Peak gate current (tp = 20s) Peak positive gate voltage (respect to the pin COM) Parameter Average gate power dissipation Value 0.1 1 5 Unit W A V
THERMAL RESISTANCE
Symbol Rth (j-a) Junction to ambient Parameter Value 90 Unit C/W
ELECTRICAL CHARACTERISTICS PER SWITCH For either positive or negative polarity of pin OUT1, OUT2, OUT3, OUT4 voltage respect to pin COM voltage
Symbol IGT VGT VGD IH VD = 12V VD = 12V Test conditions (DC) RL = 140 (DC) RL = 140 Tj=25C Tj=25C Tj=110C Tj=25C MAX MAX MIN TYP MAX IL IG = 20mA Tj=25C TYP MAX VTM IDRM IRRM dV/dt (dI/dt)c VCL 2/6 IOUT = 0.3A VOUT = VDRM VOUT = VRRM VOUT = 400V gate open (dVOUT/dt)c = 10V/s ICL = 1mA tp = 1ms tp = 380s Tj=25C Tj=25C Tj=110C Tj=110C Tj=110C Tj=25C MAX MAX MAX MIN MIN TYP Values 10 1 0.2 25 60 30 65 1.1 2 50 500 0.1 600 Unit mA V V mA mA mA mA V A A V/s A/ms V
VOUT = VDRM RL = 3.3k IOUT = 100mA gate open
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 ACSTM 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 ACSTM 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 LOAD (A) Door lock Lamp Relay Valve Dispenser Micro-motor Pump Fan < 0.3 < 0.6 < 0.1 1 1 > 0.7 POWER FACTOR (A/ms) 0.15 0.4 < 0.05 (V/s) 0.15 0.15 <5 (dI/dt)c (dV/dt)c TURN-OFF DELAY (ms) < 10 < 20 < 10
< 0.2 < 0.6
> 0.2 > 0.2
< 0.1 < 0.3
< 10 < 10
< 10 < 20
TYPICAL APPLICATION DIAGRAM
VALVE / DISPENSER DOOR LOCK RELAY PUMP/FAN
L
MAINS
M
N
OUT1
OUT2
OUT3
OUT4
S1
S2
S3
S4
ACS402
ON
ON
ON
ON
D1
D2
D3
D4
COM
G1
G2
G3
G4
PA0 Vcc
PA1 Vss
PA2
PA3
ST72 MCU
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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 ACSTM 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 (10 mA/div)
IOUT
VCL = 650V
IH
IH VOUT
VOUT (200V/div)
VCL
Time
(400s/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 ACSTM application and is also used to stress the ACSTM switch according to the IEC1000-4-5 standard conditions. Thanks to the load, the ACSTM 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 = 150, L = 5H, VPP = 2kV. Fig 4: Current and voltage of the ACSTM during IEC 1000-4-5 standard test with a 220 - 10H load & VPP = 2kV.
Vout( 200 V/ v) di
R
L
I out( A / v) 2 di
OUT
AC LINE & SURGE VOLTAGE GENERATOR
S
ACSxx
ON
VAC + VPP
D
dIdt= 100 A / / s
COM
G
RG= 220
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ACS402-5SB4
Fig 5: Relative variation of gate trigger current versus junction temperature
2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0.00 0 25 50 Tj(C) 75 100 125 IGT[Tj]/IGT[Tj=25C]
Fig 6: Relative variation of holding & latching currents versus junction temperature
IH[Tj]/IH[Tj=25C] & IL[Tj]/IL[Tj=25C] 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 25 50 Tj(C) 75 100 125
Fig 7: On state characteristics @Tj max VTO = 0.90 V & RT = 0.3 (maximum values) Pon = V TO . 2. 2 . I T ( RMS ) + RT x I T ( RMS ) 2
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)
5 2 1 0.8 0.6 0.5 0.4 0.3 0.2 0.1 0.07 0.05 0.5
0.6 0.5
Total Maximum RMS current 0.4 (A)
0.3 0.2 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, 35m 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
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ACS402-5SB4
ORDERING INFORMATION
ACS
TM
4
02
-
5
S
B
4
AC Switch
Number of Switch ITRMS 02 = 0.2A
VDRM 5 = 500V Gate Sensitivity S = 10mA
DIL plastic
20 pins
PACKAGE MECHANICAL DATA DIL20 Plastic
DIMENSIONS REF.
I
Millimeters Min. Typ. Max. 1.65 0.45 0.25 26.3 10.90 2.54 22.86 6.6 4.32 3.3 1.84 Min. 0.015 0.055 0.38 1.40
Inches Typ. Max. 0.065 0.018 0.010 1.035 0.430 0.100 0.900 0.260 0.170 0.130 0.072
a1
a1 b B L e F Z e3 E D b1
B b b1 D E e e3
20 1
11 10
F I L Z
Ordering type ACS402-5SB4
n
Marking ACS402 5
Package DIL20
Weight 1.4g.
Base qty 19
Delivery mode 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 (c) 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
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