Datasheet ACST10 Datasheet (ST)

ACST10

Overvoltage protected AC switch

Features

■ Triac with overvoltage crowbar technology

■ Low I

(I

■ High noise immunity: static dV/dt > 2000 V/µs

■ TO-220FPAB insulated package: 1500 V rms

(< 10 mA) or high immunity

GT

< 35 mA) version

GT

Benefits

■ Enables equipment to meet IEC 61000-4-5

■ High off-state reliability with planar technology

■ Need no external over voltage protection

■ Reduces the power passive component count

■ High immunity against fast transients

described in IEC 61000-4-4 standards

Applications

■ AC mains static switching in appliance and

industrial control systems

■ Drive of medium power AC loads such as:

– Universal motor of washing machine drum
– Compressor for fridge or air conditioner

OUT

G

OUT

COM

TO-220AB
ACST1010-7T
ACST1035-7T

TO-220FPAB
ACST1010-7FP
ACST1035-7FP

Figure 1. Functional diagram

OUT

G

COM

Table 1. Device summary

COM

G

OUT

Description

The ACST10 series belongs to the ACS™/ACST
power switch family built with A.S.D.
specific discrete) technology. This high
performance device is suited to home appliances

®

(application

Symbol Value Unit

I

T(RMS)

V

DRM/VRRM

I

GT

10 A

700 V

10 or 35 mA

or industrial systems, and drives loads up to 10 A.

This ACST10 switch has a Triac structure and a
high voltage clamping device to absorb the
inductive turn-off energy and withstand transients
such as those described in the IEC 61000-4-5
standard. The ACST1010-7 needs a low gate
current to be activated (I
shows a high noise immunity complying with IEC
61000-4-4 standard. The ACST1035-7 offers a

< 10 mA) and still

GT

TM: ACS is a trademark of STMicroelectronics

®: A.S.D. is a registered trademark of STMicroelectronics

high static dV/dt immunity of 2 kV/µs minimum.

July 2010 Doc ID 15237 Rev 3 1/13

www.st.com

13

Characteristics ACST10

1 Characteristics

Table 2. Absolute ratings (limiting values)

Symbol Parameter Value Unit

I

T(RMS)

I

TSM

dI/dt

V

P

G(AV)

P

I

T

V

INS(RMS)

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

Table 3. Electrical characteristics

On-state rms current (full sine wave)

TO-220FPAB T

Non repetitive surge peak on-state current
Tj initial = 25 °C, ( full cycle sine wave)

2

I

tI2t for fuse selection tp = 10 ms 66 A2s

Critical rate of rise on-state current

= 2 x I

I

G

Non repetitive line peak pulse voltage

PP

GT, (tr

≤ 100 ns)

F = 60 Hz t

F = 50 Hz t

F = 120 Hz T

(1)

Average gate power dissipation Tj = 125 °C 0.1 W

Peak gate power dissipation (tp = 20 µs) Tj = 125 °C 10 W

GM

Peak gate current (tp = 20 µs) Tj = 125 °C 1.6 A

GM

Storage temperature range -40 to +150 °C

stg

T

Operating junction temperature range -40 to +125 °C

j

Maximum lead solder temperature during 10 ms (at 3 mm from case) 260 °C

T

l

Insulation rms voltage T0-220FPAB 1500 V

TO-220AB T

= 105 °C

c

= 84 °C

c

= 16.7 ms 105 A

p

= 20 ms 100 A

p

= 125 °C 100 A/µs

j

10 A

Tj = 25 °C 2 kV

Symbol Test conditions Quadrant T

(1)

V

I

GT

V

GT

V

GD

(2)

I

H

I

L

dV/dt

(dI/dt)c

(2)

(2)

= 12 V, RL = 33 Ω I - II - III 25 °C MAX. 10 35 mA

OUT

V

= 12 V, RL = 33 Ω I - II - III 25 °C MAX. 1.0 V

OUT

V

= V

OUT

I

= 500 mA 25 °C MAX. 30 50 mA

OUT

I

= 1.2 x I

G

V

OUT

, RL = 3.3 Ω I - II - III 125 °C MIN. 0.2 V

DRM

GT

= 67 % V

I - II - III 25 °C MAX. 50 70 mA

, gate open 125 °C MIN. 200 2000 V/µs

DRM

(dV/dt)c = 15 V/µs

j

125 °C MIN.

Without snubber 12

V

1. Minimum IGT is guaranteed at 5% of IGT max

2. For both polarities of OUT pin referenced to COM pin

CL

I

= 0.1 mA, t

CL

= 1 ms 25 °C MIN. 850 V

p

2/13 Doc ID 15237 Rev 3

Val u e

Unit

ACST1010-7 ACST1035-7

4.4
A/ms

ACST10 Characteristics

Table 4. Static characteristics

Symbol Test conditions Value Unit

(1)

V

V

R

I
I

TM

T0

d

DRM

RRM

I

= 14.1 A, t

OUT

(1)

Threshold voltage Tj = 125 °C MAX. 0.9 V

(1)

Dynamic resistance Tj = 125 °C MAX. 35 mΩ

= 500 µs Tj = 25 °C MAX. 1.5 V

p

Tj = 25 °C MAX. 20 µA

= V

V

OUT

DRM

/ V

RRM

= 125 °C MAX. 1.2 mA

T

j

1. For both polarities of OUT pin referenced to COM pin

Table 5. Thermal characteristics

Symbol Parameter Value Unit

TO-220AB 1.7 °C/W

R

th(j-c)

R

th(j-a)

Figure 2. Maximum power dissipation vs.

P(W)

12

11

10

9

8

7

6

5

4

3

2

1

0

012345678 910

Figure 4. On-state rms current vs. ambient

Junction to case (AC)

Junction to ambient

rms on-state current (full cycle)

I (A)

T(RMS)

temperature (free air convection full

TO-220FPAB 3.5 °C/W

TO-220AB
TO-220FPAB

60 °C/W

Figure 3. On-state rms current vs. case

temperature (full cycle)

I (A)

T(RMS)

11

10

9

8

7

6

5

4

3

2

1

0

0 25 50 75 100 125

T (°C)

C

TO-220FPAB

TO-220AB

Figure 5. Relative variation of thermal

impedance vs. pulse duration

cycle)

I (A)

T(RMS)

3,0

2,5

2,0

1.0E+00

K=[Z /R ]

th th

TO-220AB

-220FPAB

TO

Z

th(j-c)

Z

th(j-a)

1,5

1,0

0,5

0,0

0 25 50 75 100 125

T

amb

(°C)

Doc ID 15237 Rev 3 3/13

1.0E-01

TO-220AB

TO-220FPAB

1.0E-02

1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03

tp(s)

Characteristics ACST10

)

Figure 6. On-state characteristics

(maximal values)

I (A)

TM

100

(A)

10

TM

I

Tjmax :

V

(V)

V

Tj=125 °C

1

012345

Tj=25 °C

TM

to

R

d

= 0.90 V

= 35 mΩ

Figure 8. Non repetitive surge peak on-state

current for a sinusoidal pulse and
corresponding value of I²t

I (A), I t (A s)

TSM

10000

1000

22

dI/dt limitation: 100 A/µs

Tjinitial=25 °C

I

TSM

Figure 7. Non repetitive surge peak on-state

current vs. number of cycles
(T

initial = 25 °C)

I(A

TSM

110

100

90

80

70

60

50

40

30

20

Repetitive

10

T

=105 °C

C

0

1 10 100

j

Non repetitive

initial=25 °C

T

j

t=20ms

One cycle

Number of cycles

Figure 9. Relative variation of gate triggering

current (I

) and gate triggering

GT

voltage vs. junction temperature

I ,V ,[T /I [T = 25 °C]

GT

GT

3.0

2.5

2.0

jGT j

IQ3

GT

I Q1-Q2

GT

100

I²t

10

t (ms)

p

1

0.01 0.10 1.00 10.00

Figure 10. Relative variation of holding (IH)

and latching current (I

) vs.

L

junction temperature

I ,I [T ]/I ,I [T = 25 °C]

HL J HL

2.5

2.0

1.5

1.0

0.5

0.0

-50 -25 0 25 50 75 100 125

j

Typical values

I

L

I

T (°C)

J

H

1.5

V Q1-Q2-Q3

1.0

GT

0.5

T (°C)

0.0

-50 -25 0 25 50 75 100 125

j

Figure 11. Relative variation of critical rate of

decrease of main current (di/dt)c
vs. (dV/dt)c

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

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

0.1 1 10 100

ACST10-7Cxx

ACST10-7Sxx

(dV/dt)c (V/µs)

4/13 Doc ID 15237 Rev 3

ACST10 Characteristics

Figure 12. Relative variation of critical rate of

decrease of main current (di/dt)c

Figure 13. Relative variation of static dV/dt vs.

junction temperature

vs. junction temperature

(dI/dt)c[T ] /j(dI/dt)c[T =125°C]

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1
0

25 50 75 100 125

Tj(°C)

j

(dV/dt)[T ] / (dV/dt)[T = 125 °C]

11

10

9

8

7

6

5

4

3

2

1

0

jj

V=V= 469V

DR

Tj(°C)

25 50 75 100 125

Figure 14. Relative variation of maximum clamping voltage, VCL vs. junction temperature

V [T ] / V [T = 25 °C]

1.15

1.10

1.05

1.00

0.95

CLjCL

j

Minimum values

0.90

0.85

-50 -25 0 25 50 75 100 125

t (°C)

j

Doc ID 15237 Rev 3 5/13

Application information ACST10

2 Application information

2.1 Typical application description

The ACST10 device has been designed to control medium power load, such as AC motors
in home appliances. Thanks to its thermal and turn off commutation performances, the
ACST10 switch is able to drive an inductive load up to 10 A with no turn off additional
snubber. It also provides high thermal performances in static and transient modes such as
the compressor inrush current or high torque operating conditions of an AC motor. Thanks
to its low gate triggering current level, the ACST1010-7 can be driven directly by an MCU
through a simple gate resistor as shown Figure 15.

Figure 15. Compressor control – typical diagram

Compressor

AC Mains

PTC

ACST

ACST

Power supply

Compressor with integrated e-starter

Electronic

thermostat

Gate

Driver

2

1

3

Rg

Electronic

starter

logical circuitry

Compressor

AC Mains

PTC

ACST

Run

ACST

switch

Rg

Gate

Power supply

Driver

Compressor with external electronic drive

Start

switch

Rg

6/13 Doc ID 15237 Rev 3

ACST10 Application information

Figure 16. Universal drum motor control – typical diagram

Universal motor

Stator

AC Mains

Speed motor

regulation

Rotor

12V

ACST

Vcc

2.2 AC line transient voltage ruggedness

Motor direction
setting

MCU

Rg

MCU

In comparison with standard Triacs, which are not robust against surge voltage, the ACST10
is self-protected against over-voltage, specified by the new parameter V

. The ACST10

CL

switch can safely withstand AC line transient voltages either by clamping the low energy
spikes, such as inductive spikes at switch off, or by switching to the on state (for less than 10
ms) to dissipate higher energy shocks through the load. This safety feature works even with
high turn-on current ramp up.

The test circuit of Figure 17 represents the ACST10 application, and is used to stress the
ACST switch according to the IEC 61000-4-5 standard conditions. With the additional effect
of the load which is limiting the current, the ACST switch withstands the voltage spikes up to
2 kV on top of the peak line voltage. The protection is based on an overvoltage crowbar
technology. The ACST10 folds back safely to the on state as shown in Figure 18. The
ACST10 recovers its blocking voltage capability after the surge and the next zero current
crossing. Such a non repetitive test can be done at least 10 times on each AC line voltage
polarity.

Doc ID 15237 Rev 3 7/13

Application information ACST10

Figure 17. Overvoltage ruggedness test circuit for resistive and inductive loads for

IEC 61000-4-5 standards

R = 8 , L = 4 µH,VPP= 2 kVΩ

Surge generator

2kV surge

Rgene

Model of the load

R

L

ACST10

A

C Mains

Filtering unit

Figure 18. Typical current and voltage waveforms across the ACST10 during

IEC 61000-4-5 standard test

V

peak=VCL

1.2/50 µs voltage surge

V

0

Rg

8/20 µs current surge

I

8/13 Doc ID 15237 Rev 3

0

ACST10 Ordering information scheme

3 Ordering information scheme

Figure 19. Ordering information scheme

ACS T 10 10 - 7 FP

AC switch

Topology

T = Triac

On-state rms current

10 = 10 A

Sensitivity

10 = 10 mA
35 = 35 mA

Voltage

7 = 700 V

Package

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

Doc ID 15237 Rev 3 9/13

Package information ACST10

4 Package information

● Epoxy meets UL94, V0

● Recommended torque: 0.4 to 0.6 N·m

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-220AB dimensions

®

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

®

is an ST trademark.

.

Dimensions

Ref.

Millimeters Inches

Min. Max. Min. Max.

A 4.40 4.60 0.173 0.181

H2

Dia

A

C

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

L2

F2

F1

L5

L6

L9

L4

F

G1

L7

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

D

G1 2.40 2.70 0.094 0.106

H2 10 10.40 0.393 0.409

L2 16.4 typ. 0.645 typ.

M

E

L4 13 14 0.511 0.551

L5 2.65 2.95 0.104 0.116

G

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

10/13 Doc ID 15237 Rev 3

M 2.6 typ. 0.102 typ.

Diam. 3.75 3.85 0.147 0.151

ACST10 Package information

Table 7. TO-220FPAB dimensions

Dimensions

Ref.

Millimeters Inches

Min. Max. Min. Max.

A 4.4 4.6 0.173 0.181

A

H

B

B 2.5 2.7 0.098 0.106

D 2.5 2.75 0.098 0.108

E 0.45 0.70 0.018 0.027

Dia

L6

L2

L3

L5

F1

L4

F2

F

G1

G

D

L7

E

F 0.75 1 0.030 0.039

F1 1.15 1.50 0.045 0.059

F2 1.15 1.50 0.045 0.059

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

L4 9.8 10.6 0.386 0.417

L5 2.9 3.6 0.114 0.142

L6 15.9 16.4 0.626 0.646

L7 9.00 9.30 0.354 0.366

Diam. 3.00 3.20 0.118 0.126

Doc ID 15237 Rev 3 11/13

Ordering information ACST10

5 Ordering information

Table 8. Ordering information

Order code Marking Package Weight Base qty Packing mode

ACST1010-7T

ACST1010-7FP TO-220FPAB 2.3 g 50 Tube

ACST1035-7T

ACST1035-7FP TO-220FPAB 2.3 g 50 Tube

ACST10107

ACST10357

6 Revision history

Table 9. Document revision history

Date Revision Changes

02-Dec-2008 1 First issue

13-Apr-2009 2

01-Jul-2010 3 Updated order code in Table 3.

TO-220AB 2.3 g 50 Tube

TO-220AB 2.3 g 50 Tube

Updated ECOPACK statement. Reformatted for consistency with
other datasheets in this product class.

12/13 Doc ID 15237 Rev 3

ACST10

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Doc ID 15237 Rev 3 13/13