Range boost converter reference design to drive two strings of automotive LEDs


Design files


This wide input voltage range boost operates from an input of 9V - 32V and regulates current in two strings of 13 LEDs. A second control loop monitors and regulates the input current during drop outs or faults. Discrete linear regulators at the bottom of each string control the individual string current while feedback minimizes the output voltage based on the LED voltage mismatch or shorts. This low cost design operates at near 94% efficiency.

Output voltage options PMP9010.1
Vin (Min) (V) 9
Vin (Max) (V) 32
Vout (Nom) (V) 33
Iout (Max) (A) .22
Output Power (W) 7.26
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- CCM^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.

SLVRBA3.PDF (1293 K)

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


Detailed schematic diagram for design layout and components


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

SLVA631.PDF (107 K)

Detailed overview of design layout for component placement

SLVUA20.PDF (2583 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)

TPS402114.5-V to 52-V wide input range current mode boost controller with 260-mV reference voltage

Data sheet: PDF | HTML
Analog current-sense amplifiers

INA1692.7 to 60V, 440kHz Variable gain current sense amplifier

Data sheet: PDF | HTML
Analog current-sense amplifiers

INA169-Q1AEC-Q100, 2.7 to 60V, 440kHz Variable gain current sense amplifier

Data sheet: PDF | HTML
General-purpose op amps

TLV274Quad, 16-V, 3-MHz operational amplifier

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP9010 Test Results Dec. 15, 2013

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