50-W, 120-V AC Offline, LED Driver, No Magnetics, Reference Design for LED General Lighting


Design files


This reference design uses TPS92410 and TPS92411 with 50-W output power for area lighting with all components on a single printed-circuit board (PCB). This design uses four TPS92411 stages allowing 16 different switch states during the rising and falling rectified-AC waveform, which optimizes the current-regulating MOSFET headroom. TPS92410 allows monotonic analog dimming down to 3% before shutting off the current regulator. Electromagnetic interference (EMI) filtering without magnetics has been included and designed to meet FCC Title 47 Part 15 Class-B conduction requirements.

  • Non-isolated 120-V AC offline LED driver with no magnetics
  • Efficiency: 86.5%
  • Power factor: 0.97
  • THD: 10.5%
  • FCC Title 47 Part 15 Class-B tested EMI
  • Current regulator for power factor correction with multiplier for line regulation
  • Allows simple NTC thermal foldback
  • Monotonic analog dimming to 3% with shutdown
  • Deeper dimming using TSNS input
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Files used for 3D models or 2D drawings of IC components

TIDCDM5.ZIP (2215 K)

Design file that contains information on physical board layer of design PCB

TIDRRR4.PDF (1222 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Illumination LED drivers

TPS92410Switch-controlled, direct drive, linear controller for offline LED drivers

Data sheet: PDF
Illumination LED drivers

TPS92411Floating switch for offline AC linear direct drive of LEDs with Low Ripple current

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide TPS92410/411 50-W, 120-V AC Offline, LED Driver - No Magnetics Required for LEDs (Rev. A) Aug. 23, 2017

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