8/13/2019 New 600V AC Switches Bring Higher Capability

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New 600V AC switches bringhigher capability

New ACSTM series allows switching at highertemperatures and reduces gate drive consumption

The home appliance industry is shifting to electroniccontrol on a worldwide basis. Together with this trend,electronics can now cope with AC mains constraints wherehigh voltage robustness and transient voltage compatibility

are the key challenges.

STMicroelectronics, the leading thyristors and triacs

supplier, has designed ACS to control the numerous ACloads necessary for the appliance process. These ACswitches meet the requirements for reliability,compactness and mass production capability.

The new generation of 600V rated ACS ensure overallsystem reliability and efficiency, and can be directly

controlled by a microcontroller.

www.st.com/thyristors

Main features Load control of up to 0.2A (ACS102) and 0.8A

(ACS108)

Static dV/dt > 300V/s (ACS102) and > 500V/s

(ACS108)

Holding (IH) and latching (IL) current of 30mA max.

and 25mA max. respectively

Voltage capability increased to 600V

IGT< 5mA (ACS102) and < 10mA (ACS108)

Benefits Gate drive consumption decreased by 50%

Needs neither external protection snubber nor varistor

Overvoltage crowbar technology

Enables equipment to meet IEC 61000-4-5

Reduces component count up to 80%

Higher temperature specified up to 125C

Interfaces directly with the microcontroller

Common package tab connection allows connection

of several ACS on same cooling pad

Key markets and applications Wet appliances

Washing machines, dishwashers, dryers

Hot appliances Ovens, cooking ranges, coffee machines

Cold appliances Refrigerators, freezers, air conditioners

New ACS 600V comparison chart

+25%h

igher

capability

10timesbett

er

Symbol Test conditions QuadrantSensitivity

Unit03 1007 09

Symbol Test conditions Values UnitQuadrant

IGT VOUT=12V RL=33 II-III Max 10 mA

dV/dt VD=67% VRAM gate-open Tj=110C Min 625 V/s

IGT VOUT=12V RL=140 Tj=25C Max 10 mA

dV/dt VD=67% VRAM gate-open Tj=110C Min 500 V/s

IGT VD=12V RL=30 I-II-III-IV Max3 5 10 25

mA5 7 10 25dV/dt VD=67% VRAM gate-open Tj=110C Min 10 20 50 100 V/s

New ACS108 600V version (IGT=10mA)

Old ACS108 500V version (IGT=10mA)

A sensitive standard triac

8/13/2019 New 600V AC Switches Bring Higher Capability

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STMicroelectronics - June 2006 - Printed in Italy - All rights reservedThe STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies. All other names are the property of their respective owners.

For selected STMicroelectronics sales offices fax:China +86 21 52574820; France +33 1 55489569; Germany +49 89 4605454; Italy +39 02 8250449; Japan +81 3 57838216; Singapore +65 6481 5124;

Sweden +46 8 58774411; Switzerland +41 22 9292900; United Kingdom and Eire +44 1628 890391; USA +1 781 861 2678

Full product information at www.st.com

Recycled and chlorine free paperOrder code: FLACS0606

ACS108-6Sx and ACS102-6Tx profile: towardssimplicityAfter six years experience with many key appliance

market players, the highly established ACS102-5Tx and

ACS108-5Sx have been re-designed to improve the

overall electrical performance of these high reliability

switches. The new versions are now launched as the

ACS102-6Tx and ACS108-6Sx with a voltage capability

(VDRM/VRRM) increased from 500V to 600V. This allows

the crowbar structure to protect the system at a higher

voltage level than the previous version, and the

robustness has been re-qualified because the higher

crowbar threshold voltage causes a higher energy than

the switch must sustain.

The static characteristics have also been improved. The

latching and holding levels have been drastically

reduced (50% of the previous version), allowing a more

optimized gate pulse control mode, especially in case of

lower power rated loads, thus helping to save energy.

The dynamic characteristics also show enhanced

performance. The switching capabilities and the

electrical noise immunity have been improved by

approximately 15%. This new performance gives a

higher guard margin in case of specific load control.

Continuous improvementACS and ACST devices are now well known in the

appliance world. The development of new products,

dedicated to specific loads, provides global kits to the

electronic designer who wants to provide robustness,

immunity and new functions in systems. In parallel with

the new device developments, the current versions of

ACS are re-designed to benefit from the continuous

design improvements in the technology.

ValveDrum motor

AC mains

Electromagnet

ACSTACSACS

Power supply

Cut-off relay

Valve

ACSTACS

Pump

ACSACS

AC

ControllerVDD

101

VSS

Vertical axis washer with AC switch devices

AC switches typical application