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reference designLM5175 | Demoboard PMP10592

Texas Instruments LM5175 | Demoboard PMP10592

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

Overview

TopologyBuck-Boost Converter
Input voltage4.5-42 V
Output 11.1 A
IC revisionA

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)

More information

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Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
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SamplesAvailability & Sample
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74435571500
SPECWE-HCI SMT Flat Wire High Current Inductor, 15 µH, 14.1 A
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance15 µH
Performance Rated Current14.1 A
Saturation Current @ 10%10.75 A
Saturation Current @ 30%14 A
DC Resistance9 mΩ
Self Resonant Frequency14 MHz
MaterialMnZn 
Packaging Unit150 
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