STMicroelectronics-ACST310-8B
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ACST310-8B
Overvoltage protected AC switch
Datasheet
production data
Description
287
The ACST310-8B belongs to the ACS™ / ACST
®
power switch family built with A.S.D.
(application
specific discrete) technology. This high
performance device is suited to home appliances
or industrial systems and drives loads up to 3 A.
&20
*
This ACST310-8B switch embeds a Triac
structure with a high voltage clamping device able
to absorb the inductive turn-off energy and
withstand line transients such as those described
in the IEC 61000-4-5 standard.The component
‘3$.
Features
needs a low gate current to be activated (I
max.
GT
AC switch with self over voltage protection
10 mA) and still shows a high electrical noise
immunity complying with IEC standards such as
IEC 61000-4-4 (fast transient burst test).
Microcontroller direct driven (low gate current
max. 10 mA)
Three quadrants (Q1, Q2 and Q3)
UL94-V0 certified resin (flammability)
Figure 1. Functional diagram
®
ECOPACK 2
compliant component
287
Benefits
Enables equipment to meet IEC61000-4-5
High immunity against fast transients
*$7(
&20
described in IEC61000-4-4 standard
Needs no external overvoltage protection
High off-state reliability device
Interfaces directly with the microcontroller
Table 1. Device summary
– Reduces
component count
Symbol
Value
Unit
I
T(RMS)
3
A
mA
V
Applications
I
GT(Q1, Q2, Q3)
V
DRM
/V
RRM
10
AC static switching in appliances and industrial
800
control systems
Driving low power highly inductive loads or
resistive AC loads, such as motor control
circuits, small home appliances, lighting, fan
speed controllers, water valves, pumps, solid
state relays, vacuum cleaners, heaters
ACS™, is a trademark of STMicroelectronics.
®
: A.S.D., ECOPACK are registered trademarks
of STMicroelectronics
February 2017
DocID030200 Rev 1
1/14
This is information on a product in full production.
Characteristics
ACST310-8B
1
Characteristics
Table 2. Absolute ratings (limiting values)
Symbol
Parameter
Test conditions
T
c
= 112 °C
Value
Unit
I
T(RMS)
On-state RMS current (full sine wave)
3
A
f = 50 Hz
f = 60 Hz
t
p
= 20 ms
t
p
= 16.7 ms
t
p
= 10 ms
20
21
2.6
Non repetitive surge peak on-state current
(T
j
initial = 25 °C)
I
TSM
A
I
2
t
I
2
t value for fusing (T
j
initial = 25 °C)
A²s
Critical rate of rise of on-state current
dI/dt
f = 120 Hz
T
j
= 125 °C
50
A/µs
I
G
= 2 x I
G
T
,
t
r
100 ns
(1)
V
PP
Non repetitive line peak mains voltage
Average gate power dissipation
Peak gate power
T
j
= 25 °C
T
j
= 125 °C
T
j
= 125 °C
T
j
= 125°C
2
0.1
kV
W
W
A
P
G(AV)
P
GM
I
GM
T
stg
T
j
t
p
= 20 µs
t
p
= 20 µs
10
Peak gate current
1.6
Storage junction temperature range
Operating junction temperature range
-40 to +150
-40 to +125
260
°C
°C
°C
T
L
Maximum lead temperature for soldering during 10 s
Table 3. Electrical characteristics
Symbol
Test conditions
Quadrant
T
j
Value
Unit
(1)
I
GT
Max.
Max.
Min.
10
1.1
0.2
20
mA
V
V
OUT
= 12 V, R
L
= 33
I – II – III
I – II – III
25 °C
V
GT
V
GD
V
OUT
= V
DRM
,
R
L
= 3.3 k
125 °C
25 °C
V
(2)
I
H
I
OUT
= 100 mA
Max.
mA
I – III
II
25
I
L
I
G
= 1.2 x I
GT
25 °C
Max.
mA
35
dV/dt
(2)
V
OUT
= 67% V
DRM
, gate open
(dI/dt)c
(2)
(dV/dt)c = 0.1V/µs
125 °C
125 °C
125 °C
25 °C
Min.
Min.
Min.
Min.
1000
5
V/µs
A/ms
A/ms
V
(dI/dt)c
(2)
(dV/dt)c = 10 V/µs
1
(2)
V
CL
I
CL
= 0.1 mA, tp = 1 ms
850
1. Minimum
I
GT
is guaranteed at 5% of I
GT
max.
2. For
both polarities of OUT pin referenced to COM pin
2/14
DocID030200 Rev 1
ACST310-8B
Characteristics
Value Unit
Table 4. Static characteristics
Test conditions
Symbol
(1)
V
TM
V
TO
I
TM
= 4.2 A, t
p
= 380 µs
T
j
= 25 °C
Max.
Max.
Max.
1.8
0.9
200
10
V
V
Threshold voltage
Dynamic resistance
T
j
= 125 °C
T
j
= 125 °C
T
j
= 25 °C
T
j
= 125 °C
R
D
m
I
DRM
I
RRM
V
OUT
= V
DRM
/ V
RRM
Max.
µA
500
1. For
both polarities of OUT pin referenced to COM pin
Table 5. Thermal resistances
Parameter
Symbol
Value
Unit
R
th(j-c)
Junction to case (AC)
R
th(j-a)
Junction to ambient
1. S
cu
= copper surface under tab
3
°C/W
°C/W
S
Cu
(1)
= 0.5 cm²
70
Figure 2. Maximum power dissipation versus
RMS on-state current (full cycle)
Figure 3. On-state RMS current versus case
temperature
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14
Characteristics
ACST310-8B
Figure 4. On-state RMS current versus ambient
temperature (free air convection)
Figure 5. Relative variation of thermal
impedance versus pulse duration
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Figure 6. Non repetitive surge peak on-state
current for a sinusoidal pulse with width:
tp < 10ms
Figure 7. Surge peak on-state current versus
number of cycles
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DocID030200 Rev 1
ACST310-8B
Characteristics
Figure 8. Relative variation of holding current
and latching current versus junction
temperature (typical values)
Figure 9. Relative variation of gate trigger
current and gate trigger voltage versus junction
temperature (typical values)
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Figure 10. On-state characteristics
(maximum values)
Figure 11. Relative variation of critical rate of
decrease of main current versus junction
temperature (typical values)
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DocID030200 Rev 1
5/14
14
Characteristics
ACST310-8B
Figure 12. Relative variation of static dV/dt
immunity versus junction temperature
Figure 13. Relative variation of leakage current
versus junction temperature (typical values)
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Figure 14. Relative variation of critical rate of
decrease of main current versus reapplied
(dV/dt) (typical value)
Figure 15. Relative variation of the maximal
clamping voltage versus junction temperature
(min. value)
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6/14
DocID030200 Rev 1
ACST310-8B
Application information
2
Application information
2.1
Typical application description
The ACST310-8B device has been designed to switch on and off, or by phase angle control,
highly inductive or resistive loads such as pump, valve, fan, or bulb lamps. Thanks to its
high sensitivity (I
max = 10 mA), this device can be driven directly by logic level circuits
GT
Figure 16. Typical application schematic
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14
Application information
ACST310-8B
Figure 17. Phase angle control typical diagram (inductive or resistive load)
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DocID030200 Rev 1
ACST310-8B
Application information
2.2
AC line transient voltage ruggedness
In comparison with standard Triacs, which are not robust against surge voltage, the
ACST310-8B is self-protected against over-voltage, specified by the parameter V
. In
CL
addition, the ACST310-8B is a sensitive device (I
max. 10 mA), but provides a high noise
GT
immunity level against fast transients. The ACST310-8B 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 ACST310-8B switch according to the IEC 61000-4-5 standard conditions. With the
additional effect of the load which is limiting the current, the ACST310-8B 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 ACST310-8B folds back safely to the on state as
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.
Figure 18. Overvoltage ruggedness test circuit for resistive and inductive loads for
IEC 61000-4-5 standards
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1. R
= 30
Ω
, L = 10 µH, V
pp
= 2 kV (Surge Generator), Rg = 220
Ω
, AC mains = 230 V
RMS
50 Hz
DocID030200 Rev 1
9/14
14
Application information
ACST310-8B
Figure 19. Typical voltage and current waveforms across the ACST310-8B
during IEC 61000-4-5 standard test
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2.3
Electrical noise immunity
The ACST310-8B is a sensitive device (I
max. 10 mA) and can be controlled directly
GT
through a simple resistor by a logic level circuit, and still provides a high electrical noise
immunity. The intrinsic immunity of the ACST310-8B is shown by the specified dV/dt equal
to 1000 V/
μ
s at 125 °C. This immunity level is 5 to 10 times higher than the immunity
provided by an equivalent standard technology Triac with the same sensitivity. In other
words, the ACST310-8B with I
= 10 mA has immunity comparable only for higher gate
GT
current device (I
higher than 35 mA).
GT
10/14
DocID030200 Rev 1
ACST310-8B
Package information
3
Package information
Epoxy meets UL94-V0
Lead-free package
Halogen free molding compound
In order to meet environmental requirements, ST offers these devices in different grades of
®
®
ECOPACK packages,
depending on their level of environmental compliance. ECOPACK
®
ECOPACK is
an ST trademark.
3.1
DPAK package information
Figure 20. DPAK package outline
DocID030200 Rev 1
11/14
14
Package information
ACST310-8B
Table 6. DPAK package mechanical data
Dimensions
Ref.
Millimeters
Inches
(1)
Min.
Typ.
Min.
Max.
Typ.
Max.
A
2.18
0.90
0.03
0.64
4.95
0.46
0.46
5.97
4.95
6.35
4.32
2.40
1.10
0.23
0.90
5.46
0.61
0.60
6.22
5.60
6.73
5.50
0.0858
0.0354
0.0012
0.0252
0.1949
0.0181
0.0181
0.2350
0.1949
0.2500
0.1701
0.0945
0.0433
0.0091
0.0354
0.2150
0.0240
0.0236
0.2449
0.2205
0.2650
0.2165
A1
A2
b
b4
c
c2
D
D1
E
E1
e
2.286
0.09
e1
4.40
9.35
1.00
4.70
10.40
1.78
1.27
1.02
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0.1732
0.3681
0.0394
0.1850
0.4094
0.0701
0.0500
0.0402
+8 °
H
L
L2
L4
0.60
-8 °
0.0236
-8 °
V2
1. Inches
only for reference
Figure 21. DPAK recommended footprint
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DocID030200 Rev 1
ACST310-8B
Ordering information
4
Ordering information
Figure 22. Ordering information scheme
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ꢆꢊ ꢊꢆꢊ$
6HQVLWLYLW
ꢄꢂꢊ ꢊꢄꢂꢊP$
9ROWDJH
ꢉꢊ ꢊꢉꢂꢂꢊ9
3DFNDJH
%ꢊ ꢊ’3$.
3DFNLQJꢊPRGH
75ꢊ ꢊ
7
D
SHꢊDQGꢊUHHO
%ODQN
%ODQNꢊ ꢊ7XEH
Table 7. Ordering information
Order code
Marking
Package
Weight
Base qty.
Packing mode
ACST310-8B
75
Tube
ACST 3108
DPAK
0.32 g per pc.
ACST310-8BTR
2500
T
a
pe and reel
5
Revision history
Table 8. Document revision history
Revision Changes
Date
24-Feb-2017
1
Initial release.
DocID030200 Rev 1
13/14
14
ACST310-8B
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DocID030200 Rev 1
