SEPIC Converter Regulates 0.5A in LED String Reference Design


Design files


This wide input voltage range SEPIC operates from an input of 6V - 36V and regulates the current in a string of 8 LEDs to 0.5A. An external PWM input allows dimming over a wide duty cycle.

Output voltage options PMP8943.1
Vin (Min) (V) 6
Vin (Max) (V) 36
Vout (Nom) (V) 30
Iout (Max) (A) .5
Output Power (W) 15
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Sepic- CCM
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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.

SLUUAH8.PDF (1112 K)

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

SLURA81.PDF (114 K)

Detailed schematic diagram for design layout and components

SNVR277.PDF (18 K)

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

SLUUAH9.PDF (2639 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Boost controllers (external switch)

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

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP8943 Test Results May 22, 2013

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