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(R)
ACS402-5SB4
QUAD AC LINE SWITCH ARRAY
ASDTM AC Switch Family
s
s
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 FEATURES 4 high voltage AC switch array Blocking voltage: VDRM / VRRM = 500V Clamping voltage: VCL = 600V Nominal current: IT(RMS) = 0.2 A per switch Nominal current: IT(RMS) = 0.4 A for the total array Switch integrated driver Triggering current is sourced by the gate Gate triggering current : IGT < 10 mA
s s s s s s s s
DIP-20
PIN OUT CONNECTION
1 OUT1 G1
OUT2
G2
BENEFITS Needs no external overvoltage protection. Enables the equipment to meet IEC61000-4-5 standard. Miniaturizes 4 switches in 1 package. Reduces the switch component count by up to 80%. Interfaces directly with the microcontroller. Eliminates any stressing gate kick back on the microcontroller.
s s s s s s
OUT3
G3
OUT4
G4
COM
COM
note : pins 1, 3, 5, 7, 9, 12, 14, 16, 18, 20 not connected.
DESCRIPTION The ACS402 belongs to the AC line switches array family built around the ASDTM concept. This high performance device includes 4 bi-directional a.c. switches able to control an 0.2 A resistive or inductive load device. 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. For further technical information, please refer to AN1172 the Application note.
ASD and ACS are a trademarks of STMicroelectronics .
FUNCTIONAL DIAGRAM
OUT1
OUT2
OUT3
OUT4
ACS402
S1 S2 S3 S4
ON
ON
ON
ON
D1
D2
D3
D4
Com
G1
G2
G3
G4
October 2001 - Ed: 6B
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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 repetitive rise of on-state current IG = 20mA (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 = 125 C Tamb = 110 C Tamb = 90 C F =50 Hz F =60 Hz F =120 Hz note 1 Value 500 0.2 0.4 5 5.5 20 2 - 40 to + 150 - 30 to + 125 260 Unit V A A A A A/s kV C C C
Note 1: according to test described by IEC61000-4-5 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 RL = 140 RL = 140 Tj=25C Tj=25C Tj=125C Tj=25C MAX. MAX. MIN. TYP. MAX. IL IG = 20mA Tj=25C TYP. MAX. VTM IDRM IRRM dV/dt (dI/dt)c VCL IOUT = 0.3A VOUT = VDRM VOUT = VRRM VOUT = 400V gate open (dV/dt)c = 10V/s ICL = 1mA tp = 1ms tp = 500s Tj=25C Tj=25C Tj=125C Tj=110C Tj=110C Tj=25C MAX. MAX. MAX. MIN. MIN. TYP. Values 10 1 0.15 25 60 30 65 1.1 2 200 500 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
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ACS402-5SB4
AC LINE SWITCH BASIC APPLICATION The ACS402 device is well adapted to washing machines, dishwashers, tumble driers, refrigerators, water heaters and cookware. It has been designed especially to switch ON and 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 the resistor 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. No protection device are required between the gates and common terminals. In appliance 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 performance, 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).
POWER LOAD (VA) Door lock Bulb Lamp Relay Valve Dispenser Micro-motor Solenoid Pump Fan < 40 < 20 POWER FACTOR 1 > 0.7 RMS LOAD CURRENT (A) < 0.2 < 0.1 (dIOUT/dt)c (A/ms) < 0.1 < 0.05 (dVOUT/dt)c (V/s) < 0.15 <2
< 40
> 0.2
< 0.2
< 0.1
< 10
(*): Measured with an ACS402 switch
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
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 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 safely withstand the AC line transient voltages either by clamping the low energy spikes or by breaking over under high energy shocks. The test circuit in Figure 3 is representative of the final ACSTM application and is also used to stress the ACSTM 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 in 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 a 150 - 10H load & VPP = 2kV.
Vout (200 V/div)
R
L
Iout (2 A/div)
OUT
AC LINE & SURGE VOLTAGE GENERATOR
S
ACSxx
ON
VAC + VPP
D
dI/dt = 100 A/s
COM
G
RG= 220
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ACS402-5SB4
Fig. 5: Maximum power dissipation versus RMS on-state current (per switch). Fig. 6: RMS on-state current versus ambient temperature.
P(W) 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0.00
IT(RMS)(A) 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00
4 switches ON
1 switch ON
IT(RMS)(A) 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40
Tamb(C) 0 25 50 75 100 125
Fig. 7: Relative variation of thermal impedance junction to ambient versus pulse duration (device mounted on printed circuit board FR4, e(Cu) = 35m)
Fig. 8: Relative variation of gate trigger current versus junction temperature.
Zth(j-a)/Rth(j-a)
1E+0
IGT [Tj] / IGT [Tj=25C]
3.0 2.5 2.0
1E-1
1 switch
1.5 1.0 0.5
1E-2
4 switches
tp (s)
1E-3 1E-4 1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2
0.0 -40 -20 0 20
Tj(C)
40 60 80 100 120 140
Fig. 9: Relative variation of holding and latching current versus junction temperature.
Fig. 10: Surge peak on-state current versus number of cycles.
IH,IL [Tj] / IH,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 -40 -20 0 20
ITSM(A) 6 5 4 3 2 1
Tamb=25C Repetitive Non repetitive Tj initial=25C
t=20ms
One cycle
Tj(C)
40 60 80 100 120 140
Number of cycles 0 1 10 100 1000
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ACS402-5SB4
Fig. 11: Non-repetitive surge peak on-state current for a sinusoidal pulse with width tp < 10ms, and corresponding value of I2t. Fig. 12: On-state characteristics (maximum values).
ITSM(A),It(As) 100.0
dI/dt limitation: 20A/s Tj initial=25C
ITM(A) 5.00 1.00
10.0
ITSM
1.0 tp(ms) 0.1 0.01 0.10 1.00
It
0.10
Tj max.: Vto = 0.9 V Rd = 300 m
VTM(V)
10.00
0.01 0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
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 10 20 30 40 50 60 70 80 90 100 110 120
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ACS402-5SB4
ORDERING INFORMATION
ACS
4
02
-
5
S
B4
AC Switch
Switch Number ITRMS 02 = 0.2A
VDRM 5 = 500V
DIP-20 Package
Gate Sensitivity S = 10mA
PACKAGE MECHANICAL DATA DIP-20 DIMENSIONS REF.
I
Millimetres Min. Typ. Max. Min. 0.020 1.65 0.055 0.45 0.25 25.4 8.5 2.54 22.86 7.1 3.93 3.3 1.34 0.508 1.39
Inches Typ. Max. 0.065 0.018 0.010 1.000 0.335 0.100 0.900 0.279 0.155 0.130 0.053
a1
a1 b B L e F Z e3 E D b1
B b b1 D E e
20 1
11 10
e3 F I L Z
OTHER INFORMATION
Ordering type ACS402-5SB4
s
Marking ACS4025
Package DIP-20
Weight 1.4 g.
Base qty 19
Delivery mode Tube
Epoxy meets UL94,V0
ASD and ACS are a 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) 2001 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 7/8

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