PMP4791

55Vdc-80Vdc Input, 2-Channel, 350mA LED Driver (10V to 50V String)

PMP4791

Design files

Overview

This reference design contains two duplicate LED drivers. Each circuit drives a 10V to 50V series connected string of LEDs at 350mA. The input range is 55VDC to 75VDC. The TPS40210 boost controller is used in an "upside-down" buck topology for a simple, low-cost solution. This circuit includes an enable, PWM dimming, current trimming, and a current sense functions for interfacing with an external microprocessor.

Output voltage options PMP4791.1
Vin (Min) (V) 55
Vin (Max) (V) 75
Vout (Nom) (V) 50
Iout (Max) (A) .35
Output Power (W) 17.5
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Non Sync

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.

SLUU887.PDF (1134 K)

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

SLUR840.PDF (103 K)

Detailed schematic diagram for design layout and components

SLUR841.PDF (29 K)

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

Products

Includes TI products in the design and potential alternatives.

Boost controllers (external switch)

TPS402104.5~52V Wide Input Range Boost/SEPIC/Flyback DC-DC Controller

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

Technical documentation

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Type Title Date
Test report PMP4791 Test Results Feb. 22, 2012

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