11W Automotive LED Lighting Driver Reference Design


Design files


PMP20305 is an LED driver circuit reference design using the LM5022-Q1 boost controller IC and two types of constant-current methods to drive 4 strings of LEDs. Two of the LED strings utilize the TL431 voltage reference as a driver to perform a constant current source, while the other two strings utilize the TL4242 linear LED driver IC, which also features a PWM-controlled brightness adjust scheme. The input voltage range of the circuit is 6Vin to 16Vin (24Vin Peak). The output of the LM5022-Q1 boost converter is set to 26.9Vout and is capable of supplying a total of 0.4A of current to the loads.

  • 2MHz switching to bypass AM band
  • PWM dimming capability
  • Simple standalone design
Output voltage options PMP20305.1
Vin (Min) (V) 6
Vin (Max) (V) 16
Vout (Nom) (V) 26.9
Iout (Max) (A) .4
Output Power (W) 10.76
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Non Sync
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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.

TIDUDZ1.PDF (1031 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRU81.PDF (213 K)

Detailed schematic diagram for design layout and components

TIDRU82.PDF (35 K)

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

TIDRU83.PDF (166 K)

Detailed overview of design layout for component placement

TIDRU85.ZIP (684 K)

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

TIDCE64.ZIP (437 K)

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

TIDRU84.PDF (1174 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

LM5022-Q16-60V Wide Vin, current mode boost, SEPIC and Flyback controller, AEC-Q100 qualified

Data sheet: PDF | HTML
Automotive LED drivers

TL4242-Q1Automotive adjustable LED driver

Data sheet: PDF
Shunt voltage references

TL431-Q1Automotive adjustable precision shunt regulator (pin layout: KRA)

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP20305 Test Results Dec. 07, 2017

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