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(R)
ACS302-5T3
THREE LINES AC SWITCH ARRAY
ASDTM AC Switch Family
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MAIN APPLICATIONS AC on-off static switching in appliance & industrial control systems Drive of low power high inductive or resistive loads like: - relay, valve, solenoid, dispenser - pump, fan, micro-motor - low power lamp bulb, door lock
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FEATURES
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THREE HIGH VOLTAGE AC SWITCH ARRAY BLOCKING VOLTAGE: VDRM / VRRM = 500V CLAMPING VOLTAGE: VCL = 600 V NOMINAL CONDUCTING CURRENT PER LINE: IT(RMS) = 0.2 A NOMINAL CONDUCTING CURRENT FOR TOTAL ARRAY: IT(RMS) = 0.4 A GATE TRIGGERING CURRENT: IGT < 5 mA
SO-20 Wired package
PIN-OUT
11.2cm = 2.54'' OUTPUT 1 1 2 8.5cm 3 4 OUTPUT 2 5 6 7 8 OUTPUT 3 9 10 18 17 16 15 14 13 12 11 GATE 3 2.54cm = 1'' COM Pins 2, 3, 4, 6, 7, 8, 10, and 19, 17, 15, 14, 12 are not connected. GATE 2 3.81cm = 1.5''
Pin 1
20 19
COM
Pin 11
BENEFITS Needs no external overvoltage protection Enables equipment to meet IEC61000-4-5 standard Interfaces directly with a microcontroller Eliminates any stressing gate kick back on the microcontroller Array structure: design simplified, increase reliability and space saving aspects Mounting in SO-20 package enables the device to meet IEC335-1 standard
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GATE 1
DESCRIPTION The ACS302 belongs to the AC line switch family built around the ASDTM concept. This high performance device inludes 3 bidirectionnal AC switches able to control an 0.2A resistive or inductive load device. Each ACSTM 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.
ASD and ACS are trademarks of STMicroelectronics.
FUNCTIONAL DIAGRAM
OUT1 OUT2 OUT3
ACS302
S1
S2
S3
COM
G1
G2
G3
January 2003 - Ed: 2
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ACS302-5T3
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 repetitive rise of on-state current IG = 10mA with tr = 100ns Non repetitive line peak pulse voltage Storage temperature range Operating junction temperature range Maximum lead temperature for soldering during 10s Tj = 125 C Tamb = 90 C F =50 Hz F =60 Hz F =120 Hz note 1 Value 500 Array: 0.4 7.3 7.6 20 2 - 40 to + 150 - 30 to + 125 260 Tamb = 110 C One switch on = 0.2 Unit V A A A A A/s kV C C C
Note 1: according to test described by IEC61000-4-5 standard and 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 RESISTANCES
Symbol Rth (j-a) Junction to ambient Parameter Value 93 Unit C/W
ELECTRICAL CHARACTERISTICS
Symbol IGT VGT VGD IH VOUT = 12V VOUT = 12V VOUT = VDRM RL = 140 RL = 140 RL = 3.3k Test Conditions Tj=25C Tj=25C Tj=125C Tj=25C MAX MAX MIN TYP MAX IL IG = 10mA Tj=25C TYP MAX VTM IDRM IRRM dV/dt (dI/dt)c IOUT = 0.3A VOUT = VDRM VOUT = VRRM VOUT = 400V gate open (dV/dt)c = 5V/s IOUT > 0 tp = 380s Tj=25C Tj=25C Tj=125C Tj=110C Tj=110C Tj=110C Tj=25C MAX MAX MAX MIN MIN MIN TYP Values 5 0.9 0.15 20 45 25 50 1.2 2 200 300 0.1 0.15 600 V/s A/ms A/s V V A mA Unit mA V V mA
IOUT = 100mA gate open
(dV/dt)c = 10V/s IOUT < 0 VCL ICL = 1mA tp = 1ms
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ACS302-5T3
ELECTRICAL CHARACTERISTICS
Symbol IGT VGT VGD IH IL VTM Vt0 Rd IDRM/IRRM dV/dt (dV/dt)c (dI/dt)c VCL ICL Parameter Triggering gate current Triggering gate voltage Non-triggering gate voltage Holding current Latching current Peak on-state voltage drop On-state threshold voltage On-state dynamic resistance
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AC LINE SWITCH BASIC APPLICATION The ACS302 device is well adapted to washing machines, dishwashers, tumble driers, refrigerators, water heaters, and cookwares. It has been designed especially to switch ON & OFF low power loads such as solenoids, valves, relays, micro-motors, pumps, fans, door locks and low power lamp 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
Maximum forward or reverse leakage current
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Critical rate of rise of off-state voltage Critical rate of decrease of commutating off-state voltage Critical rate of decrease of commutating on-state current Clamping voltage Clamping current
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. No protection devices are required between the gates and common terminals.
In appliances systems, this ACSTM switch intends to drive low power loads in full cycle ON / OFF mode. Thanks to its thermal and turn off commutation performances, the ACS302-5TA switch is able to drive three loads up to 0.2A each, as, for example, two water valves and a door lock in a dishwasher, without any additionnal turn-off snubber.
TYPICAL APPLICATION DIAGRAM
VALVE / DISPENSER DOOR LOCK PUMP / FAN
L
MAINS
M
N
OUT1 OUT2 OUT3
ACS302
S1
S2
S3
COM
G1
G2
G3
Vcc
PA0 Vss
PA1
ST72 MCU
PA2
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ACS302-5T3
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 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 diode section that is especially designed for that purpose. Fig. 1: Turn-off operation of the ACS302 switch with an electro valve: waveform of the pin OUT current IOUT & voltage VOUT. Fig. 2: ACS302 switch static characteristic.
IOUT
IH VCL
VOUT
AC LINE TRANSIENT VOLTAGE RUGGEDNESS The ACS302 switch is able to withstand safely the AC line transient voltages either by clamping the low energy spikes or by breaking over under high energy shocks. The test circuit of the figure 3 is representative of the final ACSTM application and is also used to stress the ACS switch according to the IEC61000-4-5 standard conditions. Thanks to the load, the ACSTM switch withstands 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 IEC61000-4-5 standard. R = 150, L = 5H, VPP = 2kV. Fig. 4: Current and Voltage of the ACSTM during IEC61000-4-5 standard test with R = 150, L = 5H & VPP = 2kV.
R
L
OUT ACS302
G
SURGE VOLTAGE AC LINE & GENERATOR
VAC + VPP
COM
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ACS302-5T3
Fig. 5: Maximum power dissipation versus RMS on-state current (per switch).
P(W)
0.20 0.18 0.16 0.14 0.12 0.10 0.08
= 180
Fig. 6: RMS on-state current versus ambient temperature.
IT(RMS)(A)
0.45 0.40 0.35 0.30 0.25
1 switch ON 3 switches ON = 180
0.20 0.15
0.06 0.04 0.02 0.00 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16
180
IT(RMS)(A)
0.10 0.05 0.00
Tamb(C)
0 25 50 75 100 125
0.18
0.20
Fig. 7: Relative variation of thermal impedance junction to ambient versus pulse duration .
K=[Zth(j-a) / Rth(j-a)]
1.E+00
Fig. 8: Relative variation of gate trigger current versus junction temperature (typical value).
IGT [Tj] / IGT [Tj=25C]
3.0 2.5 2.0
1.E-01
1 cell
1.5
3 cells
1.E-02
1.0 0.5
tp(s)
1.E-03 1.E-04
Tj(C)
0.0
1.E+00 1.E+01 1.E+02 1.E+03
1.E-03
1.E-02
1.E-01
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120 130
Fig. 9: Relative variation of holding and latching current versus junction temperature (typical values).
IL,IH [Tj] / IL,IH [Tj=25C]
2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
Fig. 10: Surge peak on-state current versus number of cycles.
ITSM(A)
8 7
t=20ms
6
One cycle
5 4 3 2 1
Tamb=25C Repetitive
Tj initial=25C Non repetitive
Tj(C)
0 1 10
Number of cycles
100 1000
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ACS302-5T3
Fig. 11: Non-repetitive surge peak on-state current for a sinusoidal pulse with width tp<10ms, and corresponding value of I2t.
ITSM(A),It(As)
100.0
Tj initial=25C dI/dt limitation: 20A/s
Fig. 12: On-state characteristics (maximum values).
ITM(A)
10.00
ITSM
10.0
1.00
1.0
It
0.10
tp(ms)
0.1 0.01 0.10 1.00 10.00
0.01 0.0 0.5 1.0 1.5 2.0
VTM(V)
2.5 3.0 3.5
Tj max. Vto = 0.85 V Rd = 400 m
4.0
4.5
5.0
Fig. 13: Relative variation of critical (dI/dt)c versus junction temperature .
(dI/dt)c [Tj] / (dI/dt)c [Tj=110C]
3.0
2.5
2.0
1.5
1.0
0.5
Tj(C)
0.0 0 20 40 60 80 100 120
ORDERING INFORMATION
ACS
AC Switch
3
02
ITRMS xx = x.xA
-
5
T
3
VDRM y = y00V
Package: 3 = SO-20
Switch Number
Gate Sensitivity T = 5mA
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ACS302-5T3
PACKAGE OUTLINE MECHANICAL DATA SO-20 DIMENSIONS REF.
D hx45 A B e A1
K L
Millimeters Min. Typ. Max. Min. 2.65 0.20 0.51 0.32 13.0 7.60 1.27 10.0 0.25 0.50 10.65 0.394 0.75 0.010 1.27 0.020 8 (max) 0.092 0.004 0.013 0.009 0.484 0.291
Inches Typ. Max. 0.104 0.008 0.020 0.013 0.512 0.299 0.050 0.419 0.029 0.050
C
E
H
A A1 B C D E e H h L K
2.35 0.10 0.33 0.23 12.6 7.40
FOOT PRINT DIMENSIONS (in millimeters)
11.2 0.6 8.5
1.27
OTHER INFORMATION
Ordering type ACS302-5T3 Marking ACS302 Package SO-20 Weight 0.55g Base qty 40 Delivery mode Tube
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) 2003 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 7/8

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