OM1654A Simple Zero Crossing Triac Control IC
The OM1654A integrated circuit has been designed as simple to use, low-cost, zero crossing triac control integrated circuit requiring a minimum number of external components in temperature control applications. The OM1654A is powered directly from the mains via high ohmic resistors thus providing inherent immunity to mains-born transients. The OM1654A integrated circuit is also a very cost effective electronic replacement of traditional bimetallic thermostats. OM1654A bring features such as accurate temperature control, variable/ adjustable temperature setting and indicator to end products such as hair styling tools.
features
Zero crossing triac control Low external components count Low supply current requirement Direct AC mains powered (110V/ 240V mains)		Mains AC powered sensor Easy gate pulse width adjustment On chip protection against gate spikes Small size packaging (SO8)
benefits
No external DC supply required Minimal RFI filtering circuit Small PCB footprint		Low external component count translates to low electronic circuitry cost Lifetime accuracy Proven reliability
applications
Hair styling tools Hair straighteners Hair crimpers Hair curlers/ curling irons Hot hair rollers		Home heating appliances Electric frypan Deep fryer Electric iron Toster Oven
OM1654A block diagram
application support
Application note AN002: Using the OM1654A Simple Triac Control IC The operating principles and external circuit component requirements of OM1654A are discussed. Specifically designed for triac control of medium and high power resistive heating loads. Application note AN002 also contains design examples of an electric frypan and deep fryer. Application note AN004: Input Sensing Circuit Design for OM1654A The operating principles and requirements of the standard input sensor circuit as well as bridge sensing circuit for improved accuracy of OM1654A are discussed. Such sensing circuits are suited to applications requiring triac control of medium and high power resistive heating loads. Demo board HM194: Standard OM1654A demo Demo board HM231: OM1654A/ IES5521A hair straightener application Specifically designed to demonstrate the features of OM1654A / IES5521A in hair straightener / curling irons application. News about OM1654A for hair styling tools is on Electronicstalk