Boost converter for 4 LED strings reference design
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PMP10505 is a boost converter for LEDs which utilizes the LM5020-2 controller.  The switching frequency is set to 100 kHz for high efficiency at a nominal output power of 18.5W. The design features switch current limiting, output over-voltage limiting and summing feedback for multiple LED strings. Constant current regulation allows for wide variation of output voltage.

  • Constant current output
  • Summing feedback for multiple strings
  • Allows for wide variation of output voltage
  • Output over-voltage limiting
  • Cycle by cycle switch current limit
  • Synchronizable to external clock
  • Thermal shut down protection
  • Programmable input under-voltage lockout



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Schematic/Block Diagram

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Design Files

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TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5020  13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller  Step-up (boost) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5020 Download Download
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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1272 01 Apr 2015
Design files (7)
Title Type Size (KB) Date
ZIP 145 01 Apr 2015
ZIP 430 01 Apr 2015
PDF 229 01 Apr 2015
PDF 101 01 Apr 2015
PDF 79 01 Apr 2015
PDF 105 01 Apr 2015
PDF 117 01 Apr 2015

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