WeEn Semiconductors

TOPT16-800C0

TOPTriac

TOPT16-800C0

Product data sheet

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22 August 2018

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11.7 Application schematics

The following schematics show possible implementations of TOPTriac. Gate trigger

current is from a 5 V minimum logic supply. It is possible to trigger from a 3.3 V

microcontroller by using a transistor level shifter to a higher voltage gate drive power

supply, which may be 5 V minimum or the 12 V supply that may already be available for

other loads such as lighting, indication and sounders.

For

DC triggering, reset is achieved by removing the gate drive at any time and

For

pulse triggering, reset is achieved by removing and reapplying the gate bleed

(up to 5V max) and will most likely be direct drive from the microcontroller output.

In all of the following circuits, gate trigger and gate bleed current are applied by logic zero

drive from the microcontroller.

Fig. 16. DC triggering from 5 V microcontroller

Fig. 17. Pulse triggering from 5 V microcontroller

Fig. 18. DC triggering from 3.3 V microcontroller

Fig. 19. Pulse triggering from 3.3 V microcontroller