STMicroelectronics ACS102-6T DATA SHEET

Main product characteristics

ACS102-6T

AC switch family

Transient protected AC switch (ACS™)

I

T(RMS)

V

DRM/VRRM

I

GT

■ Overvoltage protection by crowbar technology

■ High noise immunity - static dV/dt > 300 V/µs

0.2 A

600 V

5 mA

Applications

■ AC ON/OFF static switching in appliances and

industrial control systems

■ Drive of low power high inductive or resistive

loads like:
– relay, valve, solenoid,

– dispenser, door lock
– micro-motor

Benefits

■ Needs no external protection snubber or

varistor.

■ Enables equipment to meet IEC 61000-4-5.

■ Reduces component count by up to 80%.

■ Interfaces directly with the micro-controller.

■ Common package tab connection supports

connection of several alternating current
switches (ACS) on the same cooling pad.

■ Integrated structure based on ASD

technology

(1)

G

COM

COM

NC

SO-8

ACS102-6T1

NC

OUT

NC

NC

G

OUT

TO-92

ACS102-6TA

COM

Description

The ACS102-6T belongs to the AC line switch
family. This high performance switch can control a
load of up to 0.2A.

The ACS102-6T switch includes an overvoltage
crowbar structure to absorb the overvoltage
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.

Functional diagram

OUT

G

Order code

Part number Marking

ACS102-6TA ACS1026T

ACS102-6TA-TR ACS1026T

ACS102-6T1 ACS1026T

ACS102-6T1-TR ACS1026T

1. ASD: Application Specific Devices

January 2006 1/11

COM Common drive reference to connect to the

mains
OUT Output to connect to the load.
G Gate input to connect to the controller through

gate resistor

TM: ACS is a trademark of STMicroelectronics

COM

Rev 1

www.st.com

11

1 Characteristics ACS102-6T

1 Characteristics

Table 1. Absolute maximum ratings (T

= 25 °C, unless otherwise specified)

amb

Symbol Parameter Value Unit

= 100 °C

I

T(RMS)

I

RMS on-state current (full sine wave)

Non repetitive surge peak on-state current

TSM

(full cycle sine wave, T

initial = 25 °C)

j

SO-08

f = 60 Hz t = 16.7 ms 7.6

f = 50 Hz t = 20 ms 7.3

I²t I²t Value for fusing

TO-92

dI/dt

V

V

P

T

1. according to test described by IEC 61000-4-5 standard and Figure 16

Critical rate of rise of on-state current
I

= 2xIGT, tr ≤ 100 ns

G

Non repetitive line peak mains voltage

PP

I

Peak gate current

GM

Peak positive gate voltage

GM

Average gate power dissipation

G(AV)

Storage junction temperature range

stg

Operating junction temperature range

T

j

(1)

f = 120 Hz

= 20 µs Tj = 125 °C

t

p

T

amb

T

amb

= 10 ms

t

p

= 125 °C

T

j

Tj = 25 °C

= 125 °C

T

j

= 125 °C

T

j

= 100 °C

0.2 A

0.38 A²s

50 A/µs

2kV

1A

10 V

0.1 W

-40 to +150

-30 to +125

A

°C

Table 2. Electrical characteristics (T

= 25 °C, unless otherwise specified)

j

Symbol Test conditions Quadrant Value Unit

(1)

I

GT

V

GT

V

GD

(2)

I

H

(2)

I

L

dV/dt

(dI/dt)c

V

CL

1. minimum IGT is guaranteed at 10% of IGT max

2. for both polarities of OUT referenced to COM

V

= 12 V, RL = 33 Ω

OUT

V

= V

OUT

I

= 100 mA

OUT

IG = 1.2 x I

(2)

V

= 67% V

OUT

(2)

Without snubber (15 V/µs), turn-off time ≤ 20 ms, Tj = 125 °C

, RL =3.3 kΩ, Tj = 125 °C

DRM

GT

gate open, Tj = 125 °C

DRM,

ICL = 0.1 mA, tp = 1 ms, Tj = 125 °C

II - III MAX 5

II - III MAX 0.9

II - III MIN 0.15

MAX 20

MAX 25

MIN 300

MIN 0.15

MIN 650

mA

V

V

mA

mA

V/µs

A/ms

V

2/11

ACS102-6T 1 Characteristics

Table 3. Static electrical characteristics

Symbol Test conditions Value Unit

(1)

V

TM

VTO

(1)

ITM= 0.3 A, tp = 380 µs

Tj = 25 °C MAX 1.2 V

Tj = 125 °C MAX 0.80 V

R

I

DRM

I

RRM

(1)

D

V

= 600 V

OUT

Tj = 125 °C MAX 500 mΩ

Tj = 25 °C

2µA

MAX

Tj = 125 °C 0.2 mA

1. for both polarities of OUT referenced to COM

Table 4. Thermal resistance

Symbol Parameter Value Unit

R

th (j-l)

R

th (j-a)

Figure 1. Maximum power dissipation vs RMS

P (W)

0.18

0.16

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0.00

0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20

Junction to lead (AC) TO-92 60

TO-92 150

Junction to ambient

S = 40 mm² SO-8 150

Figure 2. RMS on-state current vs ambient

on-state current (full cycle)

α=180°

I(A)

T(RMS)

180°

I (A)

T(RMS)

0.22

0.20

0.18

0.16

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0.00

0 25 50 75 100 125

temperature (full cycle)

a=180°

Printed circuit board FR4

Natural convection

T°C

amb

°C/W

3/11

1 Characteristics ACS102-6T

Figure 3. Relative variation of junction to

ambient thermal impedance vs
pulse duration and package

K=[Z

1.E+00

1.E-01

1.E-02

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

th(j-a)/Rth(j-a)

TO-9 2

]

SO-8

t (S)

P

Figure 5. Non repetitive surge peak on-state

current vs number of cycles

I

(A)

TSM

10

9

8

7

6

5

4

3

2

1

0

1 10 100 1000

Repetitive

T

=100°C

amb

Non repetitive
Tj initial=25°C

t=20ms

One cycle

Number of cycles

Figure 4. Relative variation of gate trigger

current, holding current and
latching current vs junction
temperature

I

,I

,I

[T

]/I

,I

,I

[T

GT

H

L

IL& I

j

H

2.5

2.0

1.5

1.0

0.5

0.0

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

=25°C]

GT

H

L

j

I

GT

Tj(°C)

Figure 6. Non repetitive surge peak on-state

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

(A), I²t (A²s)

I

TSM

1.E+03

1.E+02

1.E+01

1.E+00

1.E-01

0.01 0.10 1.00 10.00

initial = 25 °C).

j

I

TSM

(ms)t

p

Tj initial=25°C

I²t

4/11

ACS102-6T 1 Characteristics

Figure 7. On-state characteristics (maximal

values)

I

(A)

TM

10.00

Tjmax.:
V

= 0.8 V

to

= 500 mΩ

R

d

1.00

0.10

0.01

Tj=125°C

Tj=25°C

VTM(V)

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Figure 9. Relative variation of critical rate of

decrease of main current (di/dt)c
versus junction temperature

(dI/dt) [T ] / (dI/dt) [T =125 °C]

cc

20

18

16

14

12

10

8

6

4

2

0

55 65 75 85 95 105 115 125

jj

T (°C)

j

V

= 400 V

out

Figure 8. SO-8 junction to ambient thermal

resistance versus copper surface
under tab (PCB FR4, copper
thickness 35 µm)

R

(°C/W)

th(j-a)

160

140

120

100

80

60

40

20

0

0 50 100 150 200 250 300

SCU(mm²)

SO-8

Figure 10. Relative variation of critical rate of

decrease of main current (di/dt)c vs
(dV/dt)c, with turn-off time < 20 ms

] / Specified (dI/dt)

[(dV/dt)

(dI/dt)

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

0.1 1 10 100

c

c

c

(dV/dt)c(V/µs)

V

= 400 V

out

Figure 11. Relative variation of static dV/dt

versus junction temperature

=125°C]

]/dV/dt[T

dV/dt [ T

8

7

6

5

4

3

2

1

0

j

25 50 75 100 125

j

V

=400V

out

Tj(°C)

Figure 12. Relative variation of the maximal

clamping voltage versus junction
temperature (min value)

VCL[Tj]/V

1.20

1.10

1.00

0.90

0.80

0.70

0.60

0.50

-25 0 25 50 75 100 125

5/11

DRM

Tj(°C)

2 AC line switch - basic application ACS102-6T

2 AC line switch - basic application

The ACS102-6T switch is triggered by a negative gate current flowing from the gate pin G. The
switch can be driven directly by the digital controller through a resistor as shown in Figure 13.

Thanks to its overvoltage protection and turn-off commutation performance, the ACS102-6T
switch can drive a small power high inductive load with neither varistor nor additional turn-off
snubber.

Figure 13. Typical application program

Valve

AC Mains

V

Power supply

ss

MCU

V

dd

Rg

ACS102-6T

2.1 Protection against overvoltage: the best choice is ACS

In comparison with standard triacs, which are not robust against surge voltage, the ACS102-6T
is over-voltage self-protected, specified by the new parameter V
operating conditions: in case of turn-off of very inductive load, and in case of surge voltage that
can occur on the electrical network.

2.1.1 High inductive load switch-off: turn-off overvoltage clamping

With high inductive and low RMS current loads the rate of decrease of the current is very low.
An overvoltage can occur when the gate current is removed and the OUT current is lower than
I

.

H

As shown in Figure 14 and Figure 15, at the end of the last conduction half-cycle, the load
current decreases (1). The load current reaches the holding current level I
turns off (3). The water valve, as an inductive load (up to 15 H), reacts as a current generator
and an overvoltage is created, which is clamped by the ACS (4). The current flows through the
ACS avalanche and decreases linearly to zero. During this time, the voltage across the switch is
limited to the clamping voltage V
dissipated in the clamping section that is designed for this purpose. When the energy has been
dissipated, the ACS voltage falls back to the mains voltage value (5).

. The energy stored in the inductance of the load is

CL

. This feature is useful in two

CL

(2), and the ACS

H

6/11

ACS102-6T 2 AC line switch - basic application

Figure 14. Effect of the switching off of a high

Figure 15. Description of the different steps
inductive load - typical clamping
capability of ACS102-6T

4

V

I

OUT

(5 mA/div)

100µs/div

3

1

I

H

2

PEAK=VCL

V

OUT

(200 V/div)

5

2.1.2 AC line transient voltage ruggedness

The ACS102-6T switch is able to withstand safely the AC line transients 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 shown in Figure 16 is representative of the final ACS102-6T application, and is
also used to test the ACS switch according to the IEC 61000-4-5 standard conditions. Thanks
to the load limiting the current, the ACS102-6T switch withstands the voltage spikes up to 2 kV
above the peak line voltage. The protection is based on an overvoltage crowbar technology.
Actually, the ACS102-6T breaks over safely as shown in Figure 17. The ACS102-6T recovers
its blocking voltage capability after the surge (switch off back at the next zero crossing of the
current).

during switching off of a high
inductive load

I

I

OUT

OUT

1

1

3

3

2

2

I

I

H

H

5

5

4

4

V

V

OUT

OUT

V

V

CL

CL

Such non-repetitive tests can be done 10 times on each AC line voltage polarity.

Figure 16. Overvoltage ruggedness test circuit

for resistive and inductive loads
with conditions equivalent to
IEC 61000-4-5 standards

Surge generator
"1.2/50 waveform"

Rgene

2

2.4 kV surge

Model of the load

R

150

L

5µH

ACS102-6Tx

Rg
220

Figure 17. Typical current and voltage

waveforms across the ACS102-6T
during IEC 61000-4-5 standard test

V

PEAK

I

OUT

(2 A/div)

V

OUT

(200 V/div)

200ns/div

7/11

3 Ordering information scheme ACS102-6T

3 Ordering information scheme

ACS 1 02 - 6 T A -TR

AC Switch series

Number of switches

Current

02 = 0.2 A

Voltage

6 = 600 V

Sensitivity

T = 5 mA

Package

A = TO-92
1 = SO-8

Packing

TR = Tape and reel
Blank = (TO-92) Bulk

RMS

(SO-8) Tube

4 Package information

4.1 TO-92 Mechanical data

A

B

C

F

DE

DIMENSIONS

REF

Millimeters Inches

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

A 1.35 0.053

a

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 0.50 0.019

8/11

ACS102-6T 4 Package information

4.2 SO-8 Mechanical data

DIMENSIONS

ddd C

A2

A1

B

8

e

D

5

E

41

(Seating

Plane)

A

H

Figure 18. SO-8 Footprint

REF.

Millimetres Inches

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

A 1.350 1.75 0.053 0.069

C

k

h x 45°

(Gage Plane)

L

0.25mm

A1 0.100 0.250 0.004 0.010

A2 1.100 1.650 0.043 0.065

B 0.330 0.510 0.013 0.020

C 0.190 0.250 0.008 0.010

D 4.800 5.000 0.189 0.197

E 3.800 4.000 0.150 0.157

e 1.270 0.050

H 5.800 6.200 0.228 0.244

h 0.250 0.500 0.010 0.020

L 0.400 1.270 0.016 0.050

k0° 8°0° 8°

ddd 0.100 0.004

6.8

0.6

4.2

1.27

In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect . The category of
second level interconnect is marked on the package and on the inner box label, in compliance
with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also
marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are
available at: www.st.com.

9/11

5 Ordering information ACS102-6T

5 Ordering information

Part number Marking Package Weight Base Qty Packing mode

ACS102-6TA ACS1026T TO-92 Bulk

ACS102-6TA-TR ACS1026T TO-92 Tape and Reel

ACS102-6T1 ACS1026T SO-8 Tube

ACS102-6T1-TR ACS1026T SO-8 Tape & reel

6 Revision history

Date Revision Changes

05-Jan-2006 1 Initial release.

10/11

ACS102-6T 6 Revision history

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by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
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11/11