ACST12 STMicroelectronics, ACST12 Datasheet

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ACST12

Manufacturer Part Number
ACST12
Description
Overvoltage protected AC switch
Manufacturer
STMicroelectronics
Datasheet

Specifications of ACST12

High Noise Immunity
static dV/dt > 2000 V/μs

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Features
Benefits
Applications
Description
The ACST12 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
or industrial systems and drives loads up to 12 A.
This ACST12 switch embeds a Triac structure and
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 ACST1210-7 needs
a low gate current to be activated (I
and still provides a high electrical noise immunity
complying with the IEC 61000-4-4 standard. The
ACST1235-7 offers an extremely high static dV/dt
immunity of 2 kV/µs minimum.
December 2010
Triac with overvoltage crowbar technology
Low I
(I
High noise immunity: static dV/dt > 2000 V/µs
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
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
GT
<35 mA) version
GT
(<10 mA) or high immunity
GT
®
(application
< 10 mA)
Doc ID 15238 Rev 4
Overvoltage protected AC switch
Figure 1.
Table 1.
TM: ACS is a trademark of STMicroelectronics
®: A.S.D. is a registered trademark of STMicroelectronics
OUT
V
DRM
Symbol
I
T(RMS)
ACST1210-7T
ACST1235-7T
I
GT
TO-220AB
/V
RRM
Functional diagram
Device summary
G
COM
OUT
10 or 35
G
Value
700
12
COM
OUT
OUT
ACST1210-7G
ACST1235-7G
ACST12
D
2
PAK
COM
Unit
mA
A
V
www.st.com
G
1/13
13

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ACST12 Summary of contents

Page 1

... This high performance device is suited to home appliances or industrial systems and drives loads This ACST12 switch embeds a Triac structure and 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 ...

Page 2

... T = 125 °C 100 A/µ 125 ° 125 °C 0 125 ° 125 °C 1 150 - 125 260 Value Unit ACST1210-7 ACST1235-7 Unit 10 35 1.0 0 200 2000 V/µs 5.3 A/ms 14 850 °C °C ° ...

Page 3

... ACST12 Table 4. Static characteristics Symbol ( 500 µs TM OUT p (1) V Threshold voltage T0 (1) R Dynamic resistance d I DRM OUT DRM RRM I RRM 1. For both polarities of OUT pin referenced to COM pin Table 5. Thermal characteristics Symbol R Junction to case (AC) th(j-c) R Junction to ambient th(j-a) Figure 2 ...

Page 4

... Number of cycles 10 100 Relative variation of gate triggering current and gate voltage versus junction temperature (typical value Q1-Q2 GT Q1-Q2-Q3 - decrease of main current (di/dt)c versus (dV/dt)c ACST12-7Cxx ACST12 - 7Sxx (dV/dt)c (V/µ ACST12 t=20ms One cycle 1000 T j (°C) 100 125 100 ...

Page 5

... ACST12 Figure 12. Relative variation of critical rate of decrease of main current versus junction temperature (dI/dt)c (dI/dt)c[T j =125° Figure 14. Relative variation of maximum clamping voltage, V junction temperature ° 1.15 1.10 1.05 1.00 Minimum values 0.95 0.90 0.85 -50 - Figure 13. Relative variation of static dV/dt dV/dt dV/dt[T j =125° ...

Page 6

... The ACST12 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 ACST12 switch is able to drive an inductive load 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 motor ...

Page 7

... Figure 17. Universal drum motor control – typical diagram 2.2 AC line transient voltage ruggedness In comparison with standard Triacs, which are not robust against surge voltage, the ACST12 is self-protected against over-voltage, specified by the new parameter V switch can safely withstand AC line transient voltages either by clamping the low energy spikes, such as the inductive spikes at switch off switching to the on state (for less than 10 ms) to dissipate higher energy shocks through the load ...

Page 8

... Application information Figure 18. Overvoltage ruggedness test circuit for resistive and inductive loads for IEC 61000-4-5 standards Filtering unit AC Mains Figure 19. Typical voltage and current waveforms across the ACST12 during IEC 61000-4-5 standard test 8/ µH, Vsurge = 2 kV Surge generator 2kV surge ...

Page 9

... ACST12 3 Ordering information scheme Figure 20. Ordering information scheme AC switch Topology T = Triac On-state rms current Sensitivity Voltage 7 = 700 V Package G = D²PAK T = TO-220AB Delivery mode TR = Tape and reel (DPAK) Blank = Tube (TO-220FPAB, DPAK) Ordering information scheme ACS ...

Page 10

... F1 1.14 1.70 0.044 F2 1.14 1.70 0.044 G 4.95 5.15 0.194 G1 2.40 2.70 0.094 H2 10 10.40 0.393 L2 16.4 typ 0.511 L5 2.65 2.95 0.104 L6 15.25 15.75 0.600 L7 6.20 6.60 0.244 L9 3.50 3.93 0.137 M 2.6 typ. Diam. 3.75 3.85 0.147 ACST12 ® Inches Max. 0.181 0.051 0.107 0.027 0.034 0.066 0.066 0.202 0.106 0.409 0.645 typ. 0.551 0.116 0.620 0.259 0.154 0.102 typ. 0.151 ...

Page 11

... ACST12 2 Table 7. D PAK dimensions Figure 21. Footprint (dimensions in mm) Ref 2mm min. FLAT ZONE 16.90 10.30 8.90 Doc ID 15238 Rev 4 Package information Dimensions Millimeters Inches Min. Typ. Max. Min. Typ. ...

Page 12

... ACST1210-7G ACST1210-7GTR ACST1235-7T ACST1235-7G ACST1235-7GTR 6 Revision history Table 9. Document revision history Date 02-Dec-2008 13-Apr-2010 01-Jul-2010 07-Dec-2010 12/13 Marking Package TO-220AB 2 ACST12107 D PAK 2 D PAK TO-220AB 2 ACST12357 D PAK 2 D PAK Revision 1 First issue. Updated ECOPACK statement. Reformatted for consistency with 2 other datasheets in this product class. ...

Page 13

... ACST12 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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