120 VAC 7W PFC Wall Dimmable AC Linear Floating Switch LED Driver Reference Design
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This magnetic-free (no transformer/inductor), small form-factor, LED driver circuit is ideal for use in LED lamps, downlights, and fixtures.  The design takes advantage of relatively new high forward-voltage (22V), low-current (20mA) white LEDs to realize a compact design producing >800 lumens from about 9W of input power.  The novel floating switch architecture produces low LED current ripple comparable to single-stage SMPS based designs while providing excellent compatability with a wide range of common household wall dimmers.

  • 6-7W LED output power, >800 Lumens
  • Operates with forward (TRIAC) and reverse-phase wall dimmers
  • Power factor corrected > 0.9
  • Low LED current ripple
  • Low conducted EMI, no radiated EMI

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Design Files

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TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS92411  Floating switch for offline AC linear direct drive of LEDs with Low Ripple current  LED drivers  Sample & Buy View Design Kits & Evaluation Modules

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TPS92411 Download

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