IXDN0036 datasheet(32/41 Pages) IXYS

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ATAVRFBKIT / EVLD001 User Guide

7-33

7597A–AVR–02/06

Section 7

Conclusion

The ballast demonstrator shows that the AT90PWMx microcontroller can control and

regulate fluorescent lamps from any of the three (DALI, 0 – 10VDC & SWISS) methods

of dimming. It can automatically sense the control method used thereby providing lamp

controller manufacturers with maximum flexibility in their design. One or more lamps can

be controlled with flexibility and precision. Universal input and power factor control adds

to the flexibility of the design with a minimal addition of more expensive active

components.

Additionally, the programmability of the microcontroller offers the lamp manufacturer the

flexibility to add more design features than are shown here to enhance their market

position. The ballast demonstrator, with it's many features, does not address all the pos-

sibilities available to the lamp controller designer.

7.1

Appendix 1:

SWISS DIM

The SwissDIM allows dimming control using a simple switch connected to the mains

phase.

SwissDIM operation

The SwissDIM operation is as follows:

With the lamp switched on:

A short push switches the luminary off and stores the current light level.

A long push gradually dims the light level. (Change direction by briefly taking your finger

off the button and pressing down again)

With the lamp switched off:

A short push switches the lamp on to the last light level used. (Optional: Use a soft start

from minimum level to last level used)

A longer push starts on the last light level used and gradually raises the light level to the

required brightness.

IXDN0036 датащи(PDF) 32 Page - IXYS Corporation