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Resonant two-string LED driver with power factor correction and passive current sharing

Resonant two-string LED driver with power factor correction and passive current sharing

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A resonant two-string LED driver with power factor correction and passive current sharing is proposed. By controlling one output current, the other output current of the two-string LED driver can be controlled via passive current sharing, which makes its control simple. The proposed converter uses only one active switch and one magnetic component with single-stage power conversion, thus it benefits from low cost, small volume, light weight and high efficiency. The proposed converter is studied and experimental results of a 75 W two-string LED driver are provided to verify the studied results.

References

    1. 1)
    2. 2)
      • 2. Electromagnetic Compatibility (EMC), Part 3–2: Limits–limits for harmonic current emissions (equipment current ≤ 16 A per phase), International Standard IEC 61000-3-2, 2009.
    3. 3)
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2015.1366
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