Applications of random phase crossing triac drivers

The MOC30XX family of random phase (non-zero crossing) triac drivers consist of an aluminum gallium arsenide infrared LED, optically coupled to a silicon detector chip. These two chips are assembled in a 6-pin DIP package, providing 7.5KV_AC(PEAK) of insulation between the LED and the output detector. These output detector chips are designed to drive triacs controlling loads on 115V and 220V AC power lines. The detector chip is a complex device that functions in the same manner as a small triac, generating the signals necessary to drive the gate of a larger triac such as Fairchild锟絪 FKPF12N80. The MOC30XX triacs are capable of controlling larger power triacs with a minimum number of additional components.

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