50W Dual-stage LED Driver Reference Design with Adaptive Pre-boost Control for Automotive Headlights


Design files


The TIDA-01520 dual-stage reference design drives two strings of LEDs for automotive headlight applications while automatically adapting the pre-boost voltage without the need of a microcontroller (MCU) which saves space and cost. Additionally, the design’s adaptive, pre-boost control reduces switching losses, maximizing system efficiency in automotive headlights.

  • Automatic adaption of pre-boost voltage to string length and temperature variations
  • Maximum LED string length per channel: 14 LEDs
  • CISPR 25 tested
  • Support of dynamic input voltage
  • Support of dynamic loads (Matrix/Dimming)

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.

TIDUCA2.PDF (4119 K)

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

TIDRVL1.ZIP (1214 K)

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


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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Automotive LED drivers

TPS92515HV-Q165-V automotive 2-A shunt-PWM dimmable LED driver with Integrated NFET and current calibration

Data sheet document-pdfAcrobat PDF open-in-new HTML
Boost controllers (external switch)

LM5122-Q1Automotive, 3-V to 65-V wide VIN, current mode synchronous boost controller with multiphase

Data sheet document-pdfAcrobat PDF open-in-new HTML
General-purpose op amps

OPA348-Q1Automotive-grade, single, 5.5-V, 1-MHz, low quiescent current (45-μA), RRIO operational amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide 50-W, Dual-Stage LED Driver Reference Design With Pre-Boost Control Feb. 06, 2018

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