LED PWM Dimming Reference Design Using High Efficiency Buck-Boost Converter

(PREVIEW) PMP10592

Description & Features

Technical Documents

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View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


Description

The reference design contains a complete LM5175 based buck-boost converter and a driver and FET for PWM dimming. This design has been optimized for the 12-V automotive supply rail with support for cold-crank profile based on ISO 7637-2 pulse 4. The design provides 1.1-A constant current output to a string of 8 LEDs.

Features
  • Wide VIN 4.5V-42V
  • Drive 8 LEDs in series
  • 1-A constant current loop
  • PWM dimming driver/fet
  • 0-100% PWM dimming range
  • Meets ISO 7637-2 Pulse 4 (cold-crank)

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18537NQ5A  60-V N-Channel NexFET™ Power MOSFET  Power MOSFET  Sample & Buy View Design Kits & Evaluation Modules
LM5110  Dual 5A Compound Gate Driver with Negative Output Voltage Capability  MOSFET and IGBT Gate Drivers  Sample & Buy Not Available
LM5175  42V Wide Vin 4-Switch Synchronous Buck-Boost Controller  Buck/Boost, Inverting or Split-Rail  Sample & Buy View Design Kits & Evaluation Modules
LM5175-Q1  42V Wide Vin Synchronous 4-Switch Buck-Boost Controller  Buck/Boost, Inverting or Split-Rail  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 950 10 Mar 2015 70
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 449 10 Mar 2015 25
ZIP 746 10 Mar 2015 21
PDF 1403 10 Mar 2015 12
PDF 256 10 Mar 2015 9
PDF 86 10 Mar 2015 10
PDF 201 10 Mar 2015 53


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