ACS108-5SA ACS108-5SN - STMicroelectronics

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ACS108-5Sx

October 2001 - Ed: 6C

AC LINE SWITCH

TO-92

ACS108-5SA

■Blocking voltage: VDRM /V

RRM = 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

FEATURES

The ACS108 belongs to the AC line switches built

aroundtheASD™concept.Thishighperformance

device is able to control an 0.8 A load device.

The ACS™ 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

AN1172 the Application note.

DESCRIPTION

OUT COM

■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.

BENEFITS

FUNCTIONAL DIAGRAM

COM

OUT

ACS108

ASD™

AC Switch Family

SOT-223

ACS108-5SN

OUT

COM

■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

MAIN APPLICATIONS

ASD and ACS are a trademarks of STMicroelectronics.

ACS108-5Sx

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Symbol Parameter Value Unit

VDRM /

VRRM Repetitive peak off-state voltage Tj = 125 °C 500 V

IT(RMS) RMS on-state current full cycle sine

wave 50 to 60 Hz TO-92 Tlead = 75 °C 0.8 A

TO-92 Tamb = 60 °C 0.3 A

SOT-223 Tamb = 75 °C 0.8 A

ITSM Non repetitive surge peak on-state current

Tj initial = 25°C, full cycle sine wave F =50 Hz 7.3 A

F =60 Hz 8 A

dI/dt Critical rate of repetitive rise of on-state current

IG= 20mA with tr = 100ns F =120 Hz 100 A/µs

VPP Non repetitive line peak pulse voltage note 1 2kV

Tstg Storage temperature range - 40 to + 150 °C

Tj Operating junction temperature range - 30 to + 125 °C

Tl Maximum lead temperature for soldering during 10s 260 °C

Note 1: according to test described by IEC61000-4-5 standard & Figure 3.

ABSOLUTE RATINGS (limiting values)

Symbol Parameter Value Unit

PG (AV) Average gate power dissipation 0.1 W

IGM Peak gate current (tp = 20µs) 1 A

VGM Peak positive gate voltage (respect to the pin COM) 5 V

SWITCH GATE CHARACTERISTICS (maximum values)

Symbol Parameter Value Unit

Rth (j-a) Junction to ambient TO-92 150 °C/W

SOT-223 (*) 60 °C/W

Rth (j-l) Junction to lead for full AC line cycle conduction TO-92 60 °C/W

Rth (j-t) Junction to tab for full AC line cycle conduction SOT-223 25 °C/W

(*) : with 5cm2copper (e=35µm) surface under tab

THERMAL RESISTANCES

Symbol Test Conditions Values Unit

IGT VOUT=12V RL=140ΩTj=25°C MAX. 10 mA

VGT VOUT=12V RL=140ΩTj=25°C MAX. 1 V

VGD VOUT=VDRM RL=3.3kΩTj=125°C MIN. 0.15 V

IHIOUT= 100mA gate open Tj=25°C TYP. 25 mA

MAX. 60 mA

ILIG= 20mA Tj=25°C TYP. 30 mA

MAX. 65 mA

VTM IOUT = 1.1A tp=500µs Tj=25°C MAX. 1.3 V

IDRM

IRRM VOUT =V

DRM

VOUT =V

RRM Tj=25°C MAX. 2 µA

Tj=125°C MAX. 200 µA

dV/dt VOUT=400V gate open Tj=110°C MIN. 500 V/µs

(dI/dt)c (dV/dt)c=10V/µs Tj=110°C MIN. 0.1 A/ms

(dI/dt)c* (dV/dt)c = 15V/µs Iout < 0 (note 3) Tj=110°C MIN. 0.3 A/ms

VCL ICL = 1mA tp=1ms Tj=25°C TYP. 600 V

ELECTRICAL CHARACTERISTICS

For either positive or negative polarity of pin OUT voltage respect to pin COM voltage excepted note 3

ACS108-5Sx

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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: 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

The ACS™ switch is triggered with a negative gate current flowing out of the gate pin G. It can be driven di-

rectly 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.

AC LINE SWITCH BASIC APPLICATION

LOAD

Load IRMS

Current

(A)

POWER

FACTOR

(dI/dt)c

(A/ms)

(dV/dt)c

(V/µs)

TURN-FF

DELAY

(ms)

Door Lock Lamp < 0.3 1 0.15 0.15 <10

< 0.8 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

Table 1: Load grouping versus their turn off commutation requirement (230V AC applications).

TYPICAL APPLICATION DIAGRAM

MAINS

ST 72 MCU

LOAD

-Vcc

COM

OUT

ACS108

ACS108-5Sx

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Fig.3:Overvoltageruggednesstestcircuit for resistive

and inductive loads according to IEC61000-4-5

standard.

R = 150Ω,L=5µH, VPP = 2kV.

Iout (2 A/div)

Vout (200 V/div)

dI/dt = 100 A/µs

Fig. 4: Current and voltage of the ACS™ during

IEC61000-4-5 standard test with a 150Ω-10µH

load & VPP = 2kV.

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.

Time (400µs/div)

IOUT

(10 mA/div)

VOUT

(200V/div)

VCL = 650V

VCL

IOUT

VOUT

= 220Ω

VAC +VPP

AC LINE &

SURGE VOLTAGE

GENERATOR

GCOM

OUT

ACSxx

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.

Theenergy storedintheinductance oftheload dependsonthe holdingcurrentIHandthe inductance(upto

10H);it can reach about 20 mJ and is dissipatedinthe clamping section that is especially designed for that

purpose.

HIGH INDUCTIVE SWITCH-OFF OPERATION

TheACS108 switch is able to safely withstandthe AC line transient voltages either byclamping the low en-

ergy spikes or by breaking over under high energy shocks.

The test circuit in Figure 4 is representative of the final ACS™ application and is also used to stress the

ACS™ switch according to the IEC61000-4-5 standard conditions. Thanks to the load, the ACS™ switch

withstandsthevoltage spikes up to 2 kV above the peaklinevoltage.It will break over safely even on resis-

tive 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.

AC LINE TRANSIENT VOLTAGE RUGGEDNESS

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0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

IT(RMS)(A)

P(W)

Fig. 5: Maximum power dissipation versus RMS

on-state current.

0 10 20 30 40 50 60 70 80 90 100 110 120 130

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Tamb(°C)

IT(RMS)(A)

ACS108-5SA (TO92, Tamb=Tlead)

ACS108-5SN with 5cm² copper surface under tab

ACS108-5SA (TO92)

Fig. 6: RMS on-state current versus ambient

temperature.

1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2

0.01

0.10

1.00

tp(s)

Zth(j-a) / Rth(j-a)

Fig. 7-1: Relative variation of thermal impedance

junction to ambient versus pulse duration

(ACS108-5SA) (TO-92).

-40 -20 0 20 40 60 80 100 120 140

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Tj(°C)

IGT [Tj] / IGT [Tj=25°C]

Fig. 8: Relative variation of gate trigger current

versus junction temperature.

-40 -20 0 20 40 60 80 100 120 140

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

Tj(°C)

IH,IL [Tj] / IH,IL [Tj=25°C]

Fig. 9: Relative variation of holding and latching

current versus junction temperature.

1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2

0.01

0.10

1.00

tp(s)

Zth(j-a) / Rth(j-a)

Fig. 7-2: Relative variation of thermal impedance

junction to ambient versus pulse duration

(ACS108-5SN) (SOT-223).

ACS108-5Sx

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1 10 100 1000

Number of cycles

ITSM(A)

Tj initial=25°C

Non repetitive

Tamb=25°C

Repetitive

One cycle

t=20ms

Fig. 10: Nonrepetitivesurgepeakon-statecurrent

versus number of cycles.

0.01 0.10 1.00 10.00

0.1

1.0

10.0

100.0

tp(ms)

ITSM(A),I²t(A²s)

Tj initial=25°C

ITSM

I²t

Fig. 11: Non-repetitive surge peak on-state

current for a sinusoidal pulse with width tp<10ms,

and corresponding value of I2t.

0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6

0.01

0.10

1.00

5.00

VTM(V)

ITM(A)

Tj max.:

Vto = 0.9 V

Rd = 300 mΩ

Fig.12: On-statecharacteristics(maximum values).

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

100

110

120

130

S(Cu) (cm²)

Rth(j-a) (°C/W)

Fig. 13: Thermal resistance junction to ambient

versus copper surface under tab (Epoxy printed

circuit board FR4, copper thickness: 35µm).

0 10 20 30 40 50 60 70 80 90 100 110 120

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Tj(°C)

(dI/dt)c [Tj] / (dI/dt)c [Tj=110°C]

Fig. 14: Relative variation of critical (dI/dt)c versus

junction temperature.

ACS108-5Sx

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PACKAGE MECHANICAL DATA

SOT-223

DESCRIPTIONPIN

GATE

DRAIN

SOURCE

DRAIN

BASE

COLLECTOR

EMITTER

ACS 1 08 - 5 S A -TR

AC Switch Switch

Number

08 = 0.8A

TRMS Gate

Sensitivity

S = 10mA

A = TO-92

N = SOT-223

5 = 500V

DRM

-TR = SOT-223

Tape & Reel

ORDERING INFORMATION

Recommended soldering pattern SOT-223

PACKAGE MECHANICAL DATA

SOT-223

REF. DIMENSIONS

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 1.80 0.071

A1 0.02 0.10 0.001 0.004

B 0.60 0.70 0.85 0.024 0.027 0.033

B1 2.90 3.00 3.15 0.114 0.118 0.124

c 0.24 0.26 0.35 0.009 0.010 0.014

D 6.30 6.50 6.70 0.248 0.256 0.264

e 2.3 0.090

e1 4.6 0.181

E 3.30 3.50 3.70 0.130 0.138 0.146

H 6.70 7.00 7.30 0.264 0.276 0.287

V 10° max

ACS108-5Sx

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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 ap-

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PACKAGE MECHANICAL DATA

TO-92 (Plastic)

REF. DIMENSIONS

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 1.35 0.053

B 4.70 0.185

C 2.54 0.100

D 4.40 0.173

E 12.70 0.500

F 3.70 0.146

a 0.45 0.017

Ordering type Marking Package Weight Base qty Delivery mode

ACS108-5SA ACS08/5S TO-92 0.2 g 2500 Bulk

ACS108-5SA-TR ACS08/5S TO-92 0.2 g 2000 Tape & reel

ACS108-5SN ACS/085S SOT-223 0.12 g 1000 Tape & reel

OTHER INFORMATION