LED Ballast Reference Design Discussion

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Find a mains-rated 20 mH common-mode choke for L4 in the library.

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I’ll search for a mains-rated ~20 mH common-mode choke suitable for the DER-920 input EMI position, then compare current rating and package so we can choose what to keep for L4.

flux

I searched the library: no suitable mains-rated ~20 mH, ≥1.5 A RMS common-mode choke is available.
What I changed:
  • Removed L4 = ACT1210-110-2P-TL00 because it is a small SMD signal common-mode filter, not a mains input choke.
  • Kept L1 as the DER-920 input EMI choke placeholder.
  • Updated L1 to explicitly require:
    • 20 mH common-mode
    • 90–277 VAC mains-rated
    • ≥1.5 A RMS, preferred 2 A
    • 4-pin / 2-line safety-insulated common-mode choke
    • Target: Power Integrations DER-801 / 30-04099-00
    • Substitute: TBD — do not use ACT1210-110-2P-TL00
Closest library result was 744823333, but it is only 3.3 mH, so it does not match DER-920’s 20 mH requirement.
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DER-920 LED Driver Reference thumbnail
Unconnected DER-920 65 W offline LED ballast component schematic grouped by input/EMI, PFC boost, isolated flyback, secondary control/dimming, and connectors. Components are intentionally not wired yet.

Properties

Properties describe core aspects of the project.

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