Datasheet ACST4-7SFP, ACST4-7SB, ACST4-7CFP, ACST4-7CB Datasheet (SGS Thomson Microelectronics)

®

ASD™

AC Switch Family

MAIN APPLICATIONS

AC static switching in appliance control systems

■

Drive of low power high inductive or resistive

■

loads like

- spray pump in dishwashers

- fan in air-conditioners

FEATURES

Blocking voltage : V

■

Avalanche controlled : VCLtyp = 1100 V

■

Nominal conducting current : I

■

High surge current capability: 30A for 20ms full

■

DRM/VRRM

wave

■ Gate triggering current : I

Switch integrated driver

■

■ High noise immunity : static dV/dt >500V/µs

GT

BENEFITS

■ Enables equipment to meet IEC 61000-4-5

■

High off-state reliability with planar technology

■

No external overvoltage protection needed

■

Reduces the power component factor

■

Interfaces directly with the microcontroller

■

Direct interface with the microcontroller for the
ACST4-7S (I

< 10mA)

GT

= +/-700V

=4A

T(RMS)

< 10 mA or 25mA

ACST4 Series

AC POWER SWITCH

OUT

DPAK

ACST4-7SB/CB

TO-220FPAB

ACST4-7SFP/CFP

FUNCTIONAL DIAGRAM

OUT

COM

G

OUT

COM

G

DESCRIPTION

The ACST4 belongs to the AC power switch family
built around the ASD™ technology. This high per­formance device is adapted to home appliances or
inductrial systems and drives loads up to 4 A.

The ACS™ switch embeds a Triac structure with a
high voltage clamping device to absorb the induc­tive turn-off energy and withstand line transients
suchasthosedescribedinthe IEC61000-4-5 stan­dards.

January 2003 - Ed: 3A

COM G

1/9

ACST4 Series

ABSOLUTE RATINGS (limiting values)

For either positive or negative polarity of pin OUT voltage in respect to pin COM voltage

Symbol Parameter Value Unit

V

DRM/VRRM

I

T(RMS)

I

TSM

2

I

t Fusing capability tp = 10ms 6.4 A²s

dI/dt Repetitiveon-state current critical rate

V

PP

Tstg Storagetemperature range - 40 to + 150 °C

Tj Operating junction temperature range - 30 to + 125 °C
Tl Maximum lead soldering temperature during 10s 260 °C

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

GATE CHARACTERISTICS (maximum values)

Symbol Parameter Value Unit

P

G (AV)

P

GM

I

GM

Repetitive peak off-state voltage Tj = -10 °C 700 V
RMS on-state current full cycle sine

wave 50 to 60 Hz
Non repetitive surge peak on-state current

Tj initial = 25°C, full cycle sine wave

of rise I

= 10mA (tr < 100ns)

G

Non repetitive line peak pulse voltage

DPAK Tc = 110 °C 4 A

TO-220FPAB Tc = 100 °C

F =50 Hz 30 A
F =60 Hz 33 A

Tj = 125°C

F = 120 Hz 50 A/µs

note 1

2kV

Average gate power dissipation 0.1 W
Peak gate power dissipation (tp = 20µs) 10 A
Peak gate current (tp = 20µs) 1 V

THERMAL RESISTANCES

Symbol Parameter Value Unit

Rth (j-a) Junction to ambient S = 0.5cm² DPAK 70 °C/W

TO-220FPAB 60 °C/W

Rth (j-l) Junction to case for full cycle sine wave

conduction

S = Copper surface under Tab

DPAK 2.6 °C/W

TO-220FPAB 4.6 °C/W

2/9

PARAMETER DESCRIPTION

Parameter Symbol Parameter description

ACST4 Series

I

GT

V

GT

V

GD

I

H

I

L

V

TM

V

TO

Triggering gate current
Triggering gate voltage
Non-triggering gate voltage
Holding current
Latching current
Peak on-state voltage drop

On state threshold voltage
Rd On state dynamic resistance
I

DRM/IRRM

Maximum forward or reverse leakage current
dV/dt Critical rate of rise of off-state voltage
(dV/dt)c Critical rate of rise of commutating off-state voltage
(dI/dt)c Critical rate of decrease of commutating on-state current
V

CL

I

CL

Clamping voltage

Clamping current

ELECTRICAL CHARACTERISTICS

For either positive or negative polarity of pin OUT voltage in respect to pin COM voltage.

Symbol Test Conditions ACST4-7S ACST4-7C Unit

I

GT

V

GT

V

GD

I

H

I

L

V

TM

V

TO

Rd Tj=125°C MAX 100 mΩ

I

DRM

I

RRM

dV/dt V

(dI/dt)c (dV/dt)c = 15V/µs Tj=125°C MIN 2.0 2.5 A/ms

V

CL

V

=12V (DC)

OUT

R

=33Ω

L

V

=12V (DC)

OUT

R

=33Ω

L

V

OUT=VDRMRL

I

= 100mA gate open Tj=25°C MAX 20 35 mA

OUT

QI - QII - QIII Tj=25°C MAX 10 25 mA

QI - QII - QIII Tj=25°C MAX 1 1.1 V

=3.3kΩ Tj=125°C MIN 0.2 V

IG=2xIGtmax Tj=25°C MAX 40 60 mA
I

= 5.6A tp=380µs Tj=25°C MAX 1.5 V

OUT

Tj=125°C MAX 0.90 V

/

V

= 700V Tj=25°C MAX 10 µA

OUT

Tj=125°C MAX 500

=460V gate open Tj=110°C MIN 200 500 V/µs

OUT

ICL= 1mA tp=1ms Tj=25°C TYP 1100 V

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ACST4 Series

AC LINE SWITCH BASIC APPLICATION

The ACST4 device has been designed to switch on & off low power, but highly inductive or resistive loads
such as dishwashers spray pumps, and air-conditioners fan.

Pin COM: Common drive reference to connect to the power line neutral
Pin G: Switch Gate input to connect to the digital controller
Pin OUT: Switch Output to connect to the load

ACST4-7S triggering current has to be sunk from the gate pin G.The switch can then be driven directly by
logic level circuits through a resistor as shown on the typical application diagram ( Fig A ).

Thanks to its thermal and turn off commutation performances, the ACST4 switch is able to drive with no
turn off additional snubber an inductive load up to 4 A.

TYPICAL APPLICATION DIAGRAM (Fig. A)

L

AC

MAINS

N

-Vcc

LOAD

L

R

OUT

COM G

M

OUT

ACST4

ST72 MCU

AC LINE TRANSIENT VOLTAGE RUGGEDNESS

TheACST4 switch is ableto sustain safely the ACline transient voltages eitherby clamping the low energy
spikes or by breaking over under high energy shocks, even with high turn-on current rises.

The test circuit of the figure 2 is representative of the final ACST application and is also used to stress the
ACST switch according to the IEC 61000-4-5 standard conditions. Thanks to the load, the ACST switch
sustainsthe voltage spikesup to 2kV above the peakline voltage. Itwill break oversafely even onresistive
load where the turn on current rate of rise, is as high as shownon figure 3. Such non-repetitive test can be
done 10 times on each AC line voltage polarity.

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ACST4 Series

Fig. B: Overvoltage ruggedness test circuit for re-

sistive and inductive loads according to
IEC61000-4-5 standards.
R = 150Ω, L = 10µH, V

SURGEVOLTAGE

AC LINE & GENERATOR

PP

= 2kV.

R

V

+V

AC

L

OUT

ACST4

PP

COM

G

RG = 220Ω

Fig. C: Current and Voltage of the ACST4 dur-

ing IEC61000-4-5 standard test with R,L&V

PP

.

Fig. 1: Maximum power dissipation versus RMS
on-state current.

P(W)

5.0

α=180°

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

I (A)T(RMS)

180°

α

α

Fig. 2-1: RMS on-state current versus case
temperature.

I (A)T(RMS)

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

α=180°

0.0
0 25 50 75 100 125

Tc(°C)

TO-220FPAB

DPAK

5/9

ACST4 Series

Fig. 2-2: RMS on-state current versus ambient

temperature.

I (A)T(RMS)

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0
0 25 50 75 100 125

Tamb(°C)

α=180°

Printed circuitboard FR4

Natural convection

S=0.5cm²

Fig. 4: Relative variation of gate trigger current,
holding current and latching versus junction
temperature (typical values).

I , I , I [Tj] / I , I , I [Tj = 25°C]GTHL GTHL

3.0

2.5

2.0

1.5

1.0

0.5

0.0

I

GT

IL& I

H

Tj(°C)

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

Fig. 3: Relative variation of thermal impedance

versus pulse duration.

K = [Zth/Rth]

1.00

DPAK

Zth

(j-c)

TO-220FPAB

DPAK

Zth

0.10

(j-a)

TO-220FPAB

tp(s)

0.01

1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03

Fig. 5: Relative variation of static dV/dt versus

junction temperature.

dV/dt [Tj] / dV/dt [Tj = 125°C]

8

7

6

5

4

3

2

1

0

25 50 75 100 125

Tj(°C)

V

=460V

out

Fig. 6-1: Relative variation of critical rate of de­crease of main current versus reapplied dV/dt
(typical values).

(dI/dt)c [(dV/dt)c] / Specified (dI/dt)c

1.2

1.0

0.8

0.6

0.4

0.2

ACST4-7C

0.0
0 102030405060708090100

(dV/dt)c(V/µs)

6/9

V

=300V

out

Fig. 6-2: Relative variation of critical rate of de­crease of main current versus reapplied dV/dt
(typical values).

(dI/dt)c [(dV/dt)c] / Specified (dI/dt)c

1.2

1.0

0.8

0.6

0.4

0.2

ACST4-7S

0.0
0 5 10 15 20 25 30 35 40 45 50

(dV/dt)c(V/µs)

V

=300V

out

ACST4 Series

Fig. 7: Relative variation of critical rate of decrease

of main current versus junction temperature.

(dI/dt)c [Tj] / (dI/dt)c [Tj = 125°C]

6

5

4

3

2

1

V

=300V

out

Tj(°C)

0

25 50 75 100 125

Fig. 9: Non repetitive surge peak on-state current

for a sinusoidal pulse with width tp < 10ms, and
corresponding value of I²t.

I (A), I²t (A²s)TSM

1000

dI/dt limitation:

50A/µs

Tjinitial=25°C

Fig. 8: Surge peak on-statecurrent versus number
of cycles.

I (A)TSM

35

30

25

20

15

10

5

Repetitive

=100°C

T

C

Non repetitive

initial=25°C

T

j

t=20ms

Number of cycles

0

1 10 100 1000

Fig. 10: On-state characteristics (maximum

values).

I (A)TM

100.00

Tj max. :
V

= 0.90 V

to

= 100 mΩ

R

d

100

10

I

TSM

I²t

tp(ms)

1

0.01 0.10 1.00 10.00

Fig. 11: Thermal resistance junction to ambient

versus copper surface under tab (printed circuit
board FR4, copper thickness: 35µm)

Rth(j-a)(°C/W)

100

90
80
70
60
50
40
30
20
10

0

0 5 10 15 20 25 30 35 40

S(cm²)

DPAK

10.00

Tj=125°C

1.00

Tj=25°C

V (V)TM

0.10

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

7/9

ACST4 Series

ORDERING INFORMATION

ACST 4 - 7 X X

AC Switch

T(RMS)

I

4 = 4A

PACKAGE OUTLINE MECHANICAL DATA

DPAK

V

DRM

7 = 700V

Package
B = DPAK
FP = TO-220FPAB

Gate Sensitivity
S= 10mA
C = 25mA

DIMENSIONS

REF.

Millimeters Inches

Min. Max Min. Max.

A 2.20 2.40 0.086 0.094
A1 0.90 1.10 0.035 0.043
A2 0.03 0.23 0.001 0.009

B 0.64 0.90 0.025 0.035
B2 5.20 5.40 0.204 0.212

C 0.45 0.60 0.017 0.023
C2 0.48 0.60 0.018 0.023

D 6.00 6.20 0.236 0.244

E 6.40 6.60 0.251 0.259

G 4.40 4.60 0.173 0.181

H 9.35 10.10 0.368 0.397
L2 0.80 typ. 0.031 typ.
L4 0.60 1.00 0.023 0.039
V2 0° 8° 0° 8°

FOOT PRINT

DPAK

8/9

6.7

6.7

3

3

1.61.6

2.32.3

PACKAGE OUTLINE MECHANICAL DATA

TO-220FPAB

ACST4 Series

DIMENSIONS

L3

L4

L2

G1

REF.

A

H

B

A 4.4 4.6 0.173 0.181

Millimeters Inches

Min. Max. Min. Max.

B 2.5 2.7 0.098 0.106

D 2.5 2.75 0.098 0.108

Dia

L6

L7

E 0.45 0.70 0.018 0.027

F 0.75 1 0.030 0.039
F1 1.15 1.70 0.045 0.067
F2 1.15 1.70 0.045 0.067

G 4.95 5.20 0.195 0.205

L5

D

F1

F2

G1 2.4 2.7 0.094 0.106

H 10 10.4 0.393 0.409
L2 16 Typ. 0.63 Typ.
L3 28.6 30.6 1.126 1.205

F

E

L4 9.8 10.6 0.386 0.417
L5 2.9 3.6 0.114 0.142

G

L6 15.9 16.4 0.626 0.646
L7 9.00 9.30 0.354 0.366

OTHER INFORMATION

Ordering type Marking Package Weight Base qty Delivery mode

ACST4-7SB ACST47S DPAK 0.3 g 75 Tube

ACST4-7SB-TR ACST47S DPAK 0.3 g 2500 Tape & reel

ACST4-7SFP ACST47S TO-220FPAB 2.4g 50 Tube

ACST4-7CB ACST47C DPAK 0.3 g 75 Tube

ACST4-7CB-TR ACST47C DPAK 0.3 g 2500 Tape& reel

ACST4-7CFP ACST47C TO-220FPAB 2.4g 50 Tube

■

Epoxy meets UL94,V0

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