ACS108-5Sx
AC LINE SWITCH
ASDTM AC Switch Family
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 - defrost heater
OUT G COM
FEATURES
Blocking voltage: VDRM / VRRM = 500V Clamping voltage: VCL = 600V Nominal current: IT(RMS) = 0.8 A Gate triggering current : IGT < 10mA Triggering current is sourced by the gate Switch integrated driver Drive reference COM connected to the SOT-223 tab
TO-92 ACS108-5SA
BENEFITS
Needs no external overvoltage protection. Enables the equipment to meet IEC61000-4-5 standard. Allows straightforward connection of several SOT-223 devices on the same cooling pad. Reduces the switch component count by up to 80%. Interfaces directly with the microcontroller. Eliminates any stressing gate kick back on the microcontroller.
DESCRIPTION
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The ACS108 belongs to the AC line switches built around the ASDTM concept. This high performance device is able to control an 0.8 A load device. The 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. For further technical information, please refer to
ASD and ACS are a trademarks of STMicroelectronics.
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SOT-223 ACS108-5SN
FUNCTIONAL DIAGRAM
OUT
ACS108
S
ON
D
COM
G
June 2005
REV. 2
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ACS108-5Sx
ABSOLUTE RATINGS (limiting values) Symbol VDRM/ V RRM IT(RMS) 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 with tr = 100ns Non repetitive line peak pulse voltage Storage temperature range Operating junction temperature range Maximum lead temperature for soldering during 10s TO-92 TO-92 SOT-223 Tj = 125 C Tlead = 75 C Tamb = 60 C Tamb = 75 C F = 50 Hz F = 60 Hz F = 120 Hz note 1 Value 500 0.8 0.3 0.8 7.3 8 100 2 - 40 to + 150 - 30 to + 125 260 Unit V A A A A A A/s kV C C C
ITMS dI/dt VPP Tstg Tj Tl
Note 1: according to test described by IEC61000-4-5 standard & Figure 3.
SWITCH GATE CHARACTERISTICS (maximum values) Symbol PG(AV) IGM VGM Symbol Rth (j-a) Rth (j-l) Rth (j-t) Parameter Average gate power dissipation Peak gate current (tp = 20s) Peak positive gate voltage (respect to the pin COM)
THERMAL RESISTANCES Parameter Junction to ambient
Junction to lead for full AC line cycle conduction Junction to tab for full AC line cycle conduction
(*) : with 5 cm2 copper (e=35m) surface under tab
ELECTRICAL CHARACTERISTICS For either positive or negative polarity of pin OUT voltage respect to pin COM voltage excepted note 3 Symbol IGT VGT VGD IH IL VOUT = 12V VOUT = 12V VOUT = VDRM IOUT = 100mA IG = 20mA IOUT = 1.1A VOUT = VDRM VOUT = VRRM tp = 500s
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Value 0.1 1 5 Value 150 60 60 25
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Unit W A V
TO-92 SOT-223 (*) TO-92 SOT-223
Unit C/W C/W C/W C/W
Test conditions RL = 140 RL = 140 RL = 3.3k gate open
VTM I D RM / IRRM
dV/dt (dI/dt)c (dI/dt)c* VCL
2/8
VOUT = 400V gate open (dV/dt)c = 10V/s (dV/dt)c = 15V/sIOUT < 0 (note 3) ICL = 1mA tp = 1ms
Tj = 25C MAX. Tj = 25C MAX. Tj = 125C MIN. Tj = 25C TYP. MAX. Tj = 25C TYP. MAX. Tj = 25C MAX. Tj = 25C MAX. Tj = 125C MAX. Tj = 110C MIN. Tj = 110C MIN. Tj = 110C MIN. Tj = 25C TYP.
Values 10 1 0.15 25 60 30 65 1.3 2 200 500 0.1 0.3 600
Unit mA V V mA mA mA mA V A A V/s A/ms A/ms V
ACS108-5Sx
AC LINE SWITCH BASIC APPLICATION The ACS108 device is well adapted to washing machines, dishwashers, tumble driers, refrigerators, water heaters and cookware. It has been especially designed to switch ON and OFF low power loads such as solenoids, valves, relays, dispensers, micro-motors, fans, pumps, door locks and low power lamp bulbs. Pin COM Pin G Pin OUT : Common drive reference to connect to the power line neutral : Switch Gate input to connect to the digital controller through the resistor : Switch Output to connect to the load
This 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. The SOT-223 version allows several ACS108 devices to be connected on the same cooling PCB pad which is the COM pin : this cooling pad can be then reduced, and the printed circuit layout is simplified. In appliance systems, the ACS108 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 characteristics, the ACS108 switch drives a load, such as door lock, lamp, relay, valve and micro motor, up to 0.2 A without any turn-off aid circuit. Switching off the ACS within one full AC line cycle will extend its current up to 0.8 A on resistive load. Table 1: Load grouping versus their turn off commutation requirement (230V AC applications). LOAD Load IRMS current (A) < 0.3 < 0.8 Relay Valve Dispenser Micro-motor Pump Fan < 0.1 POWER FACTOR 1 1 > 0.7 (dI/dt)c (A/ms) (dV/dt)c
Door lock, lamp
< 0.2 < 0.6
TYPICAL APPLICATION DIAGRAM
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LOAD
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< 10 < 20 < 10
TURN-OFF DELAY (ms)
< 10 < 10
< 10 < 20
AC MAINS
N
L R
OUT
S
ON
ACS108
D
COM
G
ST 72 MCU
- Vcc
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ACS108-5Sx
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 ACS108 switch with an electro valve: waveform of the gate current IG, pin OUT current IOUT & voltage VOUT. Fig. 2: ACS108 switch static characteristic.
IOUT (10 mA/div)
IOUT
VCL = 650V
IH
IH
VOUT (200V/div)
Time
(400s/div)
AC LINE TRANSIENT VOLTAGE RUGGEDNESS
The ACS108 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 4 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 testing 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.
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VCL
VOUT
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) Iout (2 A/div)
OUT
S
ACSxx
SURGE VOLTAGE
VAC + V PP
D
dI/dt = 100 A/s
ON
COM
G
RG= 220
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ACS108-5Sx
Fig. 5: Maximum power dissipation versus RMS on-state current.
P(W) 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0.0
1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0
Fig. 6: RMS on-state current versus ambient temperature.
IT(RMS)(A)
ACS108-5SA (TO92, Tamb=Tlead) ACS108-5SN with 5cm² copper surface under tab
ACS108-5SA (TO92)
IT(RMS)(A) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Tamb(C)
0 10 20 30 40 50 60 70 80 90 100 110 120 130
Fig. 7-1: Relative variation of thermal impedance junction to ambient versus pulse duration (ACS108-5SA) (TO-92).
Zth(j-a) / Rth(j-a) 1.00
Fig. 7-2: Relative variation of thermal impedance junction to ambient versus pulse duration (ACS108-5SN) (SOT-223).
Zth(j-a) / Rth(j-a) 1.00
0.10
tp(s) 0.01 1E-3 1E-2 1E-1 1E+0 1E+1
1E+2 5E+2
Fig. 8: Relative variation of gate trigger current versus junction temperature.
IGT [Tj] / IGT [Tj=25C] 3.0 2.5 2.0
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1.5 1.0 0.5
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Fig. 9: Relative variation of holding and latching current versus junction temperature.
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
Tj(C) 0.0 -40 -20 20 40 60 80 100 120 140
0.2 0.0 -40 -20 0 20
Tj(C) 40 60 80 100 120 140
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ACS108-5Sx
Fig. 10: Non repetitive surge peak on-state current versus number of cycles. Fig. 11: Non-repetitive surge peak on-state current for a sinusoidal pulse with width tp < 10ms, and corresponding value of I2t.
ITSM(A),I²t(A²s) 100.0
ITSM
t=20ms
ITSM(A) 9 8 7 6 5 4 Tamb=25C 3 Repetitive 2 1 Number of cycles 0 1 10
Tj initial=25C
One cycle
10.0
Tj initial=25C Non repetitive
1.0
I²t
tp(ms)
100
1000
0.1 0.01
0.10
1.00
10.00
Fig. 12: On-state characteristics (maximum values).
Fig. 13: Thermal resistance junction to ambient versus copper surface under tab (Epoxy printed circuit board FR4, copper thickness: 35m).
Rth(j-a) (C/W) 130 120 110 100 90 80 70 60 50 40 30 20 10 0 0.0 0.5 1.0 1.5
ITM(A) 5.00 1.00
0.10
Tj max.: Vto = 0.9 V Rd = 300 m
VTM(V) 0.01 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Fig. 14: Relative variation of critical (dl/dt)c versus junction temperature.
(dI/dt)c [Tj] / (dI/dt)c [Tj=110C] 3.0
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S(Cu) (cm²) 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Tj(C) 10 20 30 40 50 60 70 80 90 100 110 120
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ACS108-5Sx
ORDERING INFORMATION
ACS
1
08
-
5
S
A
-TR
AC Switch
Switch Number
VDRM 5 = 500V
A = TO-92 N = SOT-223 -TR = SOT-223 Tape & Reel
ITRMS 08 = 0.8A
PACKAGE MECHANICAL DATA SOT-223
Gate Sensitivity S = 10mA
DIME NS IONS
A A1 B e1 D B1
PIN 1 2 3 DESCRIPTION GATE DRAIN BASE COLLECTOR
c V
REF. A A1 B B1 c D e e1 E H V
Millimeters Min. 0.02 0.60 2.90 0.24 6.30
SOURCE EMITTER DRAIN
4
HE
4
COLLECTOR
1
2
3
e
PACKAGE MECHANICAL DATA SOT-223
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3.30 6.70
Typ. Max. Min. 1.80 0.10 0.001 0.70 0.85 0.024 3.00 3.15 0.114 0.26 0.35 0.009 6.50 6.70 0.248 2.3 4.6 3.50 3.70 0.130 7.00 7.30 0.264 10 max
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Inches
Typ. Max. 0.071 0.004 0.027 0.033 0.118 0.124 0.010 0.014 0.256 0.264 0.090 0.181 0.138 0.146 0.276 0.287
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Recommended soldering pattern SOT-223
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ACS108-5Sx
PACKAGE MECHANICAL DATA TO-92 (Plastic) DIME NS IONS
A a B C
REF. A B C D E F a
Millimeters Min.
Inches Max. 0.185
F
D
E
Typ. Max. Min. Typ. 1.35 0.053 4.70 2.54 0.100 4.40 0.173 12.70 0.500 3.70 0.45
0.146 0.017
OTHER INFORMATION Ordering type ACS108-5SA ACS108-5SA-TR ACS108-5SN REVISION HISTORY Date Apr-2004 21-Jun-2005 Revision 1 2 Marking ACS108/5S ACS108/5S ACS1/085S Package TO-92 TO-92 SOT-223 Weight 0.2 g 0.2 g 0.12 g Base qty 2500 2000 1000
First Issue Marking information updated from ACSxxxx to ACS1xxx
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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. All other names are the property of their respective owners 2005 STMicroelectronics - All rights reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States www.st.com
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Description of Changes
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Delivery mode Bulk Tape & reel Tape & reel
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