Datasheet ACS102-6TA-TR Specification

Transient protected AC switch (ACS™)

Features

■ 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 microcontroller

■ Common package tab connection supports

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

■ Integrated structure based on ASD technology

■ Overvoltage protection by crowbar technology

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

ACS102-6T

G (5)

COM (6)
COM (7)
NC (8)

SO-8

ACS102-6T1

Figure 1. Functional diagram

NC (4)

NC (3)

OUT (2)

NC (1)

ACS102-6TA

OUT

TO-92

OUT

COM

G

Applications

■ Alternating current 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

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.

G

COM

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

Table 1. Device summary

Symbol Value Unit

I

T(RMS)

V

DRM/VRRM

I

GT

0.2 A

600 V

5mA

TM: ACS is a trademark of STMicroelectronics

ASD: Application specific devices

May 2011 Doc ID 11961 Rev 3 1/11

www.st.com

11

Characteristics ACS102-6T

1 Characteristics

Table 2. Absolute maximum ratings (T

= 25 °C, unless otherwise specified)

amb

Symbol Parameter Value Unit

I

T(RMS)

I

On-state rms current (full sine wave)

Non repetitive surge peak on-state current

TSM

(full cycle sine wave, Tj initial = 25 °C)

SO-08 T

f = 60 Hz t = 16.7 ms 7.6

f = 50 Hz t = 20 ms 7.3

I²t I²t Value for fusing t

TO-92 T

dI/dt

V

V

P

T

1. According to test described by IEC 61000-4-5 standard and Figure 17

Table 3. Electrical characteristics (Tj = 25 °C, unless otherwise specified)

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 tp = 20 µs Tj = 125 °C 1 A

GM

Peak positive gate voltage Tj = 125 °C 10 V

GM

Average gate power dissipation Tj = 125 °C 0.1 W

G(AV)

Storage junction temperature range

stg

T

Operating junction temperature range

j

(1)

f = 120 Hz T

= 100 °C

amb

= 100 °C

amb

= 10 ms 0.38 A²s

p

= 125 °C 50 A/µs

j

0.2 A

Tj = 25 °C 2 kV

-40 to +150

-30 to +125

A

°C

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 MAX 20 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 MIN 0.15 A/ms

, RL =3.3 kΩ, Tj = 125 °C II - III MIN 0.15 V

DRM

GT

gate open, Tj = 125 °C MIN 300 V/µs

DRM,

ICL = 0.1 mA, tp = 1 ms, Tj = 125 °C MIN 650 V

II - III MAX 5 mA

II - III MAX 0.9 V

MAX 25 mA

2/11 Doc ID 11961 Rev 3

ACS102-6T Characteristics

Table 4. Static electrical characteristics

Symbol Test conditions Value Unit

(1)

V

V

TM

TO

R

I

DRM

I

RRM

(1)

D

(1)

I

= 0.3 A, tp = 380 µs Tj = 25 °C MAX 1.2 V

TM

Tj = 125 °C MAX 0.80 V

Tj = 125 °C MAX 500 mΩ

V

OUT

= 600 V

Tj = 25 °C

MAX

Tj = 125 °C 0.2 mA

2µA

1. for both polarities of OUT referenced to COM

Table 5. Thermal resistance

Symbol Parameter Value Unit

R

th (j-l)

Junction to lead (AC) TO-92 60

TO-92 150

R

th (j-a)

Figure 2. Maximum power dissipation

Junction to ambient

versus on-state rms current

S = 40 mm² SO-8 150

Figure 3. On-state rms current versus

ambient temperature (full cycle)

(full cycle)

P (W)

0.18

0.16

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0.00

α=180°

180°

I (A)

T(RMS)

0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20

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

a=180°

Printed circuit board FR4

Natural convection

T°C

amb

°C/W

Doc ID 11961 Rev 3 3/11

Characteristics ACS102-6T

(

)

Figure 4. Relative variation of junction to

ambient thermal impedance versus
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 6. Non repetitive surge peak on-state

current versus number of cycles

I

(A)

TSM

10

9

8

7

6

Non repetitive
Tj initial=25°C

5

4

3

Repetitive

T

=100°C

amb

2

1

0

1 10 100 1000

t=20ms

One cycle

Number of cycles

Figure 5. Relative variation of gate trigger,

holding and latching current versus
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 7. Non repetitive surge peak on-state

current for a sinusoidal pulse, and
corresponding value of I²t

(A), I²t (A²s)

I

TSM

1.E+03

1.E+02

1.E+01

1.E+00

(ms)t

1.E-01

p

0.01 0.10 1.00 10.00

Tjinitial=25 °C
Pulse width tp< 10 ms

I

TSM

I²t

Figure 8. On-state characteristics

(maximal values)

Figure 9. SO-8 junction to ambient thermal

resistance versus copper surface
under tab

R

I

A

TM

10.00

Tjmax.:
V

= 0.8 V

to

R

= 500 mΩ

d

1.00

Tj=125°C

Tj=25°C

0.10

0.01

VTM(V)

160

140

120

100

80

60

40

20

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

4/11 Doc ID 11961 Rev 3

(°C/W)

th(j-a)

PCB FR4, copper thickness 35 µm

SCU(mm²)

0

0 50 100 150 200 250 300

SO-8

ACS102-6T Characteristics

Figure 10. 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

12

11

10

9

8

7

6

5

4

3

2

1

0

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

jj

T (°C)

j

V

=300 V

out

Figure 12. Relative variation of static dV/dt

versus junction temperature

]/dV/dt[T

dV/dt [ T

8

7

6

5

4

3

2

1

0

j

25 50 75 100 125

=125°C]

j

Tj(°C)

V

=400V

out

Figure 11. Relative variation of critical rate of

decrease of main current (di/dt)c
versus (dV/dt)c

(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

Turn-off time < 20 ms

c

(dV/dt)c(V/µs)

V

= 400 V

out

] / Specified (dI/dt)

[(dV/dt)

Figure 13. 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

DRM

Tj(°C)

Doc ID 11961 Rev 3 5/11

Alternating current line switch - basic application ACS102-6T

2 Alternating current 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 14.

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 turn­off snubber.

Figure 14. 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 overvoltage self-protected, specified by the new parameter V
is useful in two 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

As shown in Figure 15 and Figure 16, at the end of the last conduction half cycle, the load
current decreases (1). The load current reaches the holding current level I
ACS 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
of the load is 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).

.

H

. The energy stored in the inductance

CL

. This feature

CL

(2), and the

H

6/11 Doc ID 11961 Rev 3

ACS102-6T Alternating current line switch - basic application

Figure 15. Effect of the switching off of a high

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

Figure 16. Description of the different steps

during switching off of a high
inductive load

I

I

OUT

OUT

1

1

2

2

I

I

H

H

5

5

2.1.2 Alternating current 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 rise.

The test circuit shown in Figure 17 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 18. The
ACS102-6T recovers its blocking voltage capability after the surge (switch off back at the
next zero crossing of the current).

3

3

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 17. Overvoltage ruggedness test circuit

for resistive and inductive loads

Surge generator
"1.2/50 waveform"

Rgene

2

2.4 kV surge

Conditions equivalent to IEC 61000-4-5 standards

Model of the load

R

150

L

5µH

ACS102-6Tx

Rg
220

Doc ID 11961 Rev 3 7/11

Figure 18. 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

Ordering information scheme ACS102-6T

3 Ordering information scheme

Figure 19. 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

Packag e

A = TO-92
1 = SO-8

Packing

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

RMS

(SO-8) Tube

8/11 Doc ID 11961 Rev 3

ACS102-6T Package information

4 Package information

● Epoxy meets UL94, V0

● Lead-free packages

In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK

Table 6. TO-92 dimensions

®

packages, depending on their level of environmental compliance. ECOPACK®

®

is an ST trademark.

Dimensions

Ref

Millimeters Inches

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

A

B

C

A1.35 0.053

a

B4.700.185

C2.54 0.100

F

DE

D4.40 0.173

E 12.70 0.500

F3.700.146

a0.500.019

Table 7. SO-8 dimensions

Dimensions

b

ppp C

Ref.

Seating

Plane

C

A

A2

A1

e

C

k

h x 45°

A1.750.069

A1 0.1 0.25 0.004 0.010

A2 1.25 0.049

L

Millimeters Inches

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

b 0.28 0.48 0.011 0.019

L1

D

C 0.17 0.23 0.007 0.009

D 4.80 4.90 5.00 0.189 0.193 0.197

E 5.80 6.00 6.20 0.228 0.236 0.244

8

1

5

E

E1

4

E1 3.80 3.90 4.00 0.150 0.154 0.157

e 1.27 0.050

h 0.25 0.50 0.010 0.020

L 0.40 1.27 0.016 0.050

L1 1.04 0.041

k0° 8°0° 8°

ppp 0.10 0.004

Doc ID 11961 Rev 3 9/11

Ordering information ACS102-6T

Figure 20. Footprint, dimensions in mm (inches)

6.8

(0.268)

4.2

(0.165)

0.6

(0.024)

1.27

(0.050)

5 Ordering information

Table 8. Ordering information

Order code Marking Package Weight Base qty Packing mode

ACS102-6TA ACS1026T TO-92 0.2 g 2500 Bulk

ACS102-6TA-TR ACS1026T TO-92 0.2 g 2000 Tape and reel

ACS102-6T1 ACS1026T SO-8 0.11 g 100 Tube

ACS102-6T1-TR ACS1026T SO-8 0.11 g 2500 Tape and reel

6 Revision history

Table 9. Document revision history

Date Revision Changes

05-Jan-2006 1 Initial release.

07-Jun-2006 2 Reformatted to current standards. Replaced Figure 9.

24-May-2011 3 Added pin indications on first page. Corrected dimensions in Table 7.

10/11 Doc ID 11961 Rev 3

ACS102-6T

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