ACS402-5SB4 - STMicroelectronics

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ACS402-5SB4

October 2001 - Ed: 6B

QUAD AC LINE SWITCH ARRAY

DIP-20

■4 high voltage AC switch array

■Blocking voltage: VDRM /V

RRM = 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 <10mA

FEATURES

The ACS402 belongs to the AC line switches array

family built around the ASD™ concept. This high

performance device includes 4 bi-directional a.c.

switches able to control an 0.2 A resistive or induc-

tive load device.

Each ACS™ 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.

DESCRIPTION

■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.

BENEFITS

PIN OUT CONNECTION

OUT1

OUT2

OUT3

OUT4

COMCOM

note : pins 1, 3, 5, 7, 9, 12, 14, 16, 18, 20 not connected.

■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™

AC Switch Family

ASD and ACS are a trademarks of STMicroelectronics .

G1 G2 G3 G4

Com

OUT1 OUT2 OUT3 OUT4

ACS402

ON ON

FUNCTIONAL DIAGRAM

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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 per switch Tamb = 110 °C 0.2 A

total array Tamb = 90 °C 0.4 A

ITSM Non repetitive surge peak on-state current

Tj initial = 25°C, full cycle sine wave F =50 Hz 5 A

F =60 Hz 5.5 A

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

IG= 20mA (tr = 100ns) F =120 Hz 20 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 90 °C/W

THERMAL RESISTANCE

Symbol Test conditions Values Unit

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

VGT VD= 12V RL= 140ΩTj=25°C MAX. 1 V

VGD VOUT =V

DRM 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 = 0.3A tp = 500µs Tj=25°C MAX. 1.1 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

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

ELECTRICAL CHARACTERISTICS PER SWITCH

For either positive or negative polarity of pin OUT1, OUT2, OUT3, OUT4 voltage respect to pin COM voltage.

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LOAD POWER

(VA) POWER

FACTOR

RMS LOAD

CURRENT

(A)

(dIOUT/dt)c

(A/ms)

(dVOUT/dt)c

(V/µs)

Door lock Bulb

Lamp < 40 1 < 0.2 < 0.1 < 0.15

Relay Valve

Dispenser

Micro-motor

Solenoid

< 20 > 0.7 < 0.1 < 0.05 < 2

Pump Fan < 40 > 0.2 < 0.2 < 0.1 < 10

(*): Measured with an ACS402 switch

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

MAINS

VALVE / DISPENSER DOOR LOCK RELAY PUMP/FAN

G1 G2 G3 G4

COM

OUT1 OUT2 OUT3 OUT4

ACS402

PA0 ST72 MCU

PA1 PA3PA2

Vcc Vss

ON ON

TYPICAL APPLICATION DIAGRAM

The ACS402 device is well adapted to washing machines, dishwashers, tumble driers, refrigerators, water

heatersandcookware.IthasbeendesignedespeciallytoswitchONand OFF low power loads such as so-

lenoids, 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 ACS™ 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 protec-

tion device are required between the gates and common terminals.

In appliance systems, this ACS™ 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.

AC LINE SWITCH BASIC APPLICATION

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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 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 kVabovethe peak line voltage. It willbreak over safely even on resis-

tive 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.

AC LINE TRANSIENT VOLTAGE RUGGEDNESS

Fig 3: Overvoltage ruggedness test circuit 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 ACS402 switch

with an electro valve: waveform of the gate current

IG, pin OUT current IOUT & voltage VOUT.

Time (400µs/div)

IOUT

(10 mA/div)

VOUT

(200V/div)

VCL = 650V

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.

Theenergystoredinthe inductanceofthe loaddependson theholdingcurrent IHandtheinductance (upto

10H); it can reach about 20 mJand is dissipated in the clamping sectionthat is especially designed for that

purpose.

HIGH INDUCTIVE SWITCH-OFF OPERATION

Fig 2: ACS402 switch static characteristic.

VCL

IOUT

VOUT

= 220Ω

VAC +VPP

AC LINE &

SURGE VOLTAGE

GENERATOR

GCOM

OUT

ACSxx

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0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

IT(RMS)(A)

P(W)

Fig. 5: Maximum power dissipation versus RMS

on-state current (per switch).

0 25 50 75 100 125

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

Tamb(°C)

IT(RMS)(A)

4 switches ON

1 switch ON

Fig. 6: RMS on-state current versus ambient

temperature.

1E-4 1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2

1E-3

1E-2

1E-1

1E+0

tp (s)

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

1 switch

4 switches

Fig. 7: Relative variation of thermal impedance

junction to ambient versus pulse duration (device

mounted on printed circuit board FR4, e(Cu) =

35µm)

-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.

1 10 100 1000

Number of cycles

ITSM(A)

Non repetitive

Tj initial=25°C

Tamb=25°C

Repetitive

One cycle

t=20ms

Fig. 10: Surge peak on-state current versus

number of cycles.

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

junction temperature.

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

dI/dt limitation: 20A/µs

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-state characteristics (maximum

values).

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Informationfurnishedisbelievedtobeaccurateandreliable.However,STMicroelectronicsassumesnoresponsibilityfortheconsequencesof

useofsuch information nor for any infringement of patents or otherrightsof third parties which may result from its use. Nolicenseis 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 ap-

proval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics

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PACKAGE MECHANICAL DATA

DIP-20

101

REF.

DIMENSIONS

Millimetres Inches

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

a1 0.508 0.020

B 1.39 1.65 0.055 0.065

b 0.45 0.018

b1 0.25 0.010

D 25.4 1.000

E 8.5 0.335

e 2.54 0.100

e3 22.86 0.900

F 7.1 0.279

I 3.93 0.155

L 3.3 0.130

Z 1.34 0.053

ACS 4 02 - 5 S B 4

AC Switch Switch

Number

02 = 0.2A

TRMS Gate

DIP-20 Package

Sensitivity

S = 10mA

5 = 500V

DRM

ORDERING INFORMATION

Ordering type Marking Package Weight Base qty Delivery mode

ACS402-5SB4 ACS4025 DIP-20 1.4 g. 19 Tube

■Epoxy meets UL94,V0

OTHER INFORMATION

ASD and ACS are a trademarks of STMicroelectronics .