ST ACS120-7SB, ACS120-7SFP, ACS120-7ST User Manual

®

ASD™

AC Switch Family

MAIN APPLICATIONS

AC static switching in appliance control systems

■

Drive of low power high inductive or resistive

■

loads like

- relay, valve, solenoid, dispenser

- pump, fan, micro-motor

- defrost heater

FEATURES

Blocking voltage : V

■

Avalanche controlled : VCLtyp = 1100 V

■

Nominal conducting current : I

■

Gate triggering current : IGT<10mA

■

■ Switch integrated driver

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

DRM/VRRM

= +/-700V

T(RMS)

=2A

ACS120-7SB/SFP/ST

AC LINE SWITCH

COM

G

OUT

DPAK

ACS120-7SB

G

COM

OUT

TO-220FPAB

ACS120-7SFP

BENEFITS

■ Needs no more external protection snubber or

varistor

■

Enables equipment to meet IEC 61000-4-5

■

Reduces component count up to 80 %

■

Interfaces directly with the microcontroller

■

Eliminates any gate kick back on the
microcontroller

■

Allows straightforward connection of several
ACS™ on same cooling pad.

DESCRIPTION

The ACS120 belongs to the AC line switch family
built around the ASD™ concept. This high perfor­manceswitchcircuitisableto control a loadup to 2
A.

The ACS™ switch embeds a high voltage clamp­ingstructure to absorb the inductiveturnoff energy
anda gate level shifterdriver to separate thedigital
controller from the main switch. It is triggered with
a negative gate current flowing out of the gate pin.

G

COM

OUT

TO-220AB

ACS120-7ST

FUNCTIONAL DIAGRAM

OUT

S

ON

D

April 2003 - Ed: 2A

COM

G

1/11

ACS120-7SB/SFP/ST

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 2.2 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 3.

GATE CHARACTERISTICS (maximum values)

Symbol Parameter Value Unit

P

G (AV)

I

GM

V

GM

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

wave 50 to 60 Hz

DPAK Tc = 115 °C 2 A

TO-220FPAB Tc = °C

TO-220AB Tc = 115 °C

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

Tj = 125°C

F =50 Hz 20 A
F =60 Hz 11 A

F = 120 Hz 50 A/µs

note 1

2kV

Average gate power dissipation 0.1 W
Peak gate current (tp = 20µs) 1 A
Peak positive gate voltage (in respect to pin COM) 5 V

THERMAL RESISTANCES

Symbol Parameter Value Unit

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

TO-220FPAB 60 °C/W

TO-220AB 60 °C/W

Rth (j-l) Junction to tab/lead for full cycle sine wave

conduction

S = Copper surface under Tab

DPAK 2.6 °C/W

TO-220FPAB 3.5 °C/W

TO-220AB 2.6 °C/W

2/11

PARAMETER DESCRIPTION

Parameter Symbol Parameter description

ACS120-7SB/SFP/ST

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 Values Unit

I

GT

V

GT

V

GD

I

H

I

L

V

TM

V

TO

Rd Tj=125°C MAX 200 mΩ

I

DRM

I

RRM

dV/dt V

(dI/dt)c (dV/dt)c = 20V/µs Tj=125°C MIN 1 A/ms

V

CL

V

=12V (DC) RL=140Ω QII - QIII Tj=25°C MAX 10 mA

OUT

V

=12V (DC) RL=140Ω QII - QIII Tj=25°C MAX 1 V

OUT

V

OUT=VDRMRL

I

= 100mA gate open Tj=25°C MAX 45 mA

OUT

=3.3kΩ Tj=125°C MIN 0.15 V

IG= 20mA Tj=25°C MAX 65 mA
I

= 2.8A tp=380µs Tj=25°C MAX 1.3 V

OUT

Tj=125°C MAX 0.85 V

/

V

= 700V Tj=25°C MAX 2 µA

OUT

Tj=125°C MAX 200

=460V gate open Tj=110°C MIN 500 V/µs

OUT

ICL= 1mA tp=1ms Tj=25°C TYP 1100 V

3/11

ACS120-7SB/SFP/ST

AC LINE SWITCH BASIC APPLICATION

The ACS120 device is well adapted to Washing machine, dishwasher, tumble drier, refrigerator,
air-conditioningsystems, and cookware.Ithas been designedespecially to switchon & off lowpower loads
such as solenoid, valve, relay, dispenser, micro-motor, pump, fan and defrost heaters.

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

ThisACS™switch is triggered with anegative gate current flowing outofthe gate pin G. Itcan be driven di­rectly by the digital controller through a resistor as shown on the typical application diagram.

Thanks to its thermal and turn off commutation performances, the ACS120 switch is able to drive with no
turn off additional snubber an inductive load up to 2 A.

TYPICAL APPLICATION DIAGRAM

L

AC

MAINS

N

-Vcc

D

COM

LOAD

L

M

R

OUT

ACS120

S

ON

G

ST72 MCU

HIGH INDUCTIVE SWITCH-OFF OPERATION

At the end of the last conduction half-cycle, the load current reaches the holding current level I

, and the

H

ACS™ switch turns off. Because of the inductance L of the load, the current flows then through the ava­lanche diode D and decreases linearly to zero. During this time, the voltage across the switch is limited to
the clamping voltage V

The energy stored in the inductance of the load depends on the holding current I

CL

.

and the inductance (up

H

to10 H); it canreach about 10 mJandis dissipated intheclamping diode section.TheACS switch sustains
the turn off energy because its clamping section is designed for that purpose.

4/11

ACS120-7SB/SFP/ST

Fig. A: Turn-off operation of the ACS120 switch

Fig. B: ACS120 switch static characteristic.

with an electro-valve: waveform of the pin OUT
current I

and voltage V

OUT

OUT

.

IOUT

IH

VCL

AC LINE TRANSIENT VOLTAGE RUGGEDNESS

The ACS120 switch is able to sustain safely the AC line transient voltages either by 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 C is representative of the final ACS application and is also used to stress the
ACS switch according to the IEC 61000-4-5 standard conditions. Thanks to the load, the ACS switch sus­tains 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 on figure D. Such non repetitive test can be done 10
times on each AC line voltage polarity.

VOUT

Fig. C: Overvoltage ruggedness test circuit

for resistive 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

ACSxx

S

PP

ON

D

COM

G

RG = 220Ω

Fig. D: Current and Voltage of the ACS120 dur-

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

PP

.

5/11

ACS120-7SB/SFP/ST

OTHER FIGURES

Maximum power dissipation vs RMS on state current.
RMS on-state current vs ambient temperature, case temperature
Relative variation of thermal impedance junction to ambient vs pulse duration and package
Relative variation of gate trigger current vs junction temperature
Relative variation of holding, latching and gate current vs junction
Relative variation of dV/dt vs Tj
Relative variation of (dV/dt)
Surge peak on-state current vs number of cycles
Non repetitive surge peak on-state current for a sinusoidal pulse with tp<10ms, and corresponding of I²t.
On-state characteristics (maximal values)
Thermal resistance junction to ambient vs copper surface under tab (DPAK)
Relative variation of critical (di/dt)c vs junction temperature

vs (di/dt)

c

c

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

P(W)

2.4

α=180°

2.2

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

I (A)

T(RMS)

180°

α

α

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

I (A)

T(RMS)

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

T (°C)

amb

α=180°

Printed circuitboardFR4

Natural convection

S=0.5cm²

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

I (A)

T(RMS)

2.4

α=180°

2.2

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

Tc(°C)

TO-220AB/DPAK

TO-220FPAB

Fig. 3: Relative variation of thermal impedance
versus pulse duration.

K=[Zth/Rth]

1.E+00

DPAK

1.E-01

1.E-02

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

Zth

(j-c)

TO-220FPAB

DPAK

Zth

(j-a)

t (s)

p

TO-220FPAB

6/11

ACS120-7SB/SFP/ST

Fig. 4: Relative variation of gate trigger current,

holding current and latching versus junction
temperature (typical values).

I , I , I [T ] / I , I , I [T = 25°C]

GTHLj GTHL j

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

I

GT

I& I

LH

T (°C)

j

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

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

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

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

cc c

V

=400V

OUT

(dV/dt) (V/µs)

c

0 5 10 15 20 25 30 35 40 45 50

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

dV/dt [T ] / dV/dt [T = 125°C]

8

7

6

5

4

3

2

1

0

jj

V

=460V

OUT

T (°C)

j

25 50 75 100 125

Fig. 7: Relative variation of critical rate of decrease
of main current versus junction temperature.

(dI/dt) [Tj] / (dI/dt) [T = 125°C]

ccj

20
18
16
14
12
10

8
6
4
2
0

25 50 75 100 125

T (°C)

j

V

=400V

OUT

Fig. 8: Surge peak on-statecurrentversus number
of cycles.

I (A)

TSM

22
20
18
16
14
12
10

8
6
4
2
0

1 10 100 1000

Repetitive
T =105°C

ab

Non repetitive
T initial=25°C

j

Number of cycles

t=20ms

Fig. 9: Non repetitive surgepeak 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

100

10

t (ms)

p

1

0.01 0.10 1.00 10.00

T initial=25°C

j

I

TSM

I²t

7/11

ACS120-7SB/SFP/ST

Fig. 10: On-state characteristics (maximum

values).

I (A)

TM

10.00

T max. :

j

V =0.85V

to

Ω

R =200m

d

1.00

Tj=125°C

0.10

0.01

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

Tj=25°C

V (V)

TM

ORDERING INFORMATION

ACS 1 20 - 7 S X

AC Switch

Number of switches

Fig. 11: Thermal resistance junction to ambient
versus copper surface under tab (printed circuit
board FR4, copper thickness: 35µm)

Rth (°C/W)

(j-a)

100

90
80
70
60
50
40
30
20
10

0

0 5 10 15 20 25 30 35 40

S(cm²)

Package

V

DRM

7 = 700V

B = DPAK
FP = TO-220FPAB
T = TO-220AB

DPAK

T(RMS)

I

20 = 2.0A

Gate Sensitivity
S= 10mA

8/11

PACKAGE OUTLINE MECHANICAL DATA

DPAK

ACS120-7SB/SFP/ST

DIMENSIONS

REF.

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°

Millimeters Inches

Min. Max Min. Max.

FOOT PRINT

DPAK

6.7

6.7

3

3

1.61.6

2.32.3

9/11

ACS120-7SB/SFP/ST

PACKAGE OUTLINE MECHANICAL DATA

TO-220FPAB

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

Dia

D 2.5 2.75 0.098 0.108

E 0.45 0.70 0.018 0.027

L6

L7

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

L5

D

F1

F2

G 4.95 5.20 0.195 0.205

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

10/11

PACKAGE OUTLINE MECHANICAL DATA

TO-220AB

H2

L2

F1

Dia

L5

L6

F2

L9

L4

F

G1

G

C

D

M

ACS120-7SB/SFP/ST

DIMENSIONS

REF.

A

L7

E

A 4.40 4.60 0.173 0.181
C 1.23 1.32 0.048 0.051
D 2.40 2.72 0.094 0.107
E 0.49 0.70 0.019 0.027

F 0.61 0.88 0.024 0.034
F1 1.14 1.70 0.044 0.066
F2 1.14 1.70 0.044 0.066

G 4.95 5.15 0.194 0.202

G1 2.40 2.70 0.094 0.106
H2 10 10.40 0.393 0.409

L2 16.4 typ. 0.645 typ.
L4 13 14 0.511 0.551
L5 2.65 2.95 0.104 0.116
L6 15.25 15.75 0.600 0.620
L7 6.20 6.60 0.244 0.259
L9 3.50 3.93 0.137 0.154

M 2.6 typ. 0.102 typ.

Diam. 3.75 3.85 0.147 0.151

Millimeters Inches

Min. Max. Min. Max.

OTHER INFORMATION

Ordering type Marking Package Weight Base qty Delivery mode

ACS120-7SB ACS1207S DPAK 0.3 g 75 Tube

ACS120-7SB-TR ACS1207S DPAK 0.3 g 2500 Tape & reel

ACS120-7SFP ACS1207S TO-220FPAB 2.4 g 50 Tube

ACS120-7ST ACS1207S TO-220AB 2.3 g 250 Bulk

■

Epoxy meets UL94,V0

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