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Ballast Demonstrator User Guide
7629A–AVR–04/06
If lamp currents exceed power limits by 10% (as determined by lamp type), set half-
bridge drive off due to over current. Start re-ignition sequence. Repeat 6 times and if still
out of spec, shutdown PFC and half-bridge drive.
PD6 rectified AC drive
Checks are made for the presence of the rectified mains (haversine) and bus voltage
throughout normal operation. Mains voltage < 90 VAC or 265 VAC peak faults the PFC
to off, turns off the half-bridge and initiates a restart.
