ABR-42022 - Fairchild Semiconductor

ABR-42022 ML4833 220V Non-Dimming Ballast Design

This Application Brief exists as a supplement to Application Note 63. When used with Application Note 63, this document contains all the necessary information to convert an ML4833 Evaluation Board into a low-cost, non-dimming 220V ballast. This power factor corrected, 60W non-dimming ballast operates over a 187 to 253VRMS line, and is designed to power two s.

Features

of the dimming ballast, which include:
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• 0.99 minimum power factor Less than 10% THD Programmable starting sequence for low glow current and extended lamp life Greater than 92% efficiency All American On-chip thermal and lamp out detection circuitry Capsco Power down threshold for GFI or end of lamp life protection Future Active Inc. Digi-Key Corp. Premier Magnetics (800) 538-8587 (800) 723-5817, (408) 434-9599 (800) 344-4539 (714) 362-4211 (800) 222-6001 Shaded items in Table 1 indicate changes to the original ML4833 Evaluation Board parts list. VENDOR LIST CONVERSION To convert th.