TLD5501-2QV

Overview

The TLD5501-2QV is a synchronous Dual-Channel Buck DC/DC controller with built in protection features and SPI interface. The synchronous concept is beneficial for driving high power LEDs with maximum system efficiency or to provide a high power constant voltage supply for lighting and non-lighting application. To give maximum flexibility for different applications both DC/DC channels of the TLD5501-2QV can be operated separately or in multiphase.

Summary of Features

  • Dual-Channel synchronous Buck DC/DC Controller
  • Constant Current and Constant Voltage Regulation
  • Individual channel or Multiphase operation
  • Wide VIN Range (Device 4.5V to 40V, Power Stage 4.5V to 55V)
  • Wide LED forward voltage Range (2V to 50V)
  • LED current accuracy+/-3% at Tj=25° and 5% over the whole automotive temperature range
  • Switching Frequency Range from 200 kHz to 700 kHz
  • 16bit SPI for diagnostics and control, providing daisy chain capability
  • Maximum Efficiency in every condition (up to 96%)
  • Limp Home Function (Fail Safe Mode)
  • Flexible current sense (Highside or Lowside)
  • EMC optimized device: Features an auto Spread Spectrum concept to ensure best in class EMC performance
  • Provides output current accuracy calibration for improved system accuracy
  • LED current sense with dedicated monitor Output
  • Adjustable soft start feature to limit the current peak and the voltage overshoot at start-up
  • Smart power protection features for device and load (open load, short of Load, Overtemperature)
  • Enhanced Dimming features to adjust average LED current and PWM dimming
  • Available in a small thermally enhanced PG-VQFN-48-31 package
  • Automotive AEC Qualified

Potential Applications

  • Especially designed for driving high power LEDs and Laser modules in automotive applications with very high efficiency
  • Power supply for high power Matrix and Pixel light sources e.g. LED or Laser modules for DMD or parallel LED Matrix arrays
  • Non LED applications even with currents of >10A like USB, mobile wireless charger and multipurpose pre-regulation like for camera modules
  • General purpose current/voltage controlled DC/DC LED driver
Tools & Software
Training

Latest Training Highlights

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Infineon's solutions for automotive applications: Rear LED lighting

  • Understand the different LED driving concepts
  • Get to know the Infineon solutions regarding automotive rear LED lighting

Introduction to two-wheeler headlamp applications

4:13

The micro learning is an introduction to LITIX™ power devices for two-wheeler headlamp applications. It explains the two-wheeler market concept and shows the different motorcycle applications. In addition, it explains the key features of the three main segments and how the motorcycle LED headlamps work.

LITIX™ DC/DC controllers for two-wheeler headlamp application

3:31

The micro learning shows the LITIX™ power family devices for motorcycle applications. The LITIX™ power family provides easy-to-use devices available for headlamp and the training explains why they are the best-fit solution for each of the segments.

Driving high and low beam with only one DC/DC controller

7:48

The micro learning shows the key features of only using a single DC/DC controller in order to achieve the desired light function. It also shows how to lower costs and have less components, among other improvements, with the same current for both LED strings. In addition, it explains how the system manages the three light functions with just two switches.

TLD509xEP for two-wheeler market

5:57

This micro learning explains how TLD509xEP is the LITIX™ solution for headlamp applications for the entry level segment of the two-wheeler market. In addition, it explains the range of topologies that fulfills the load requirements and the best-fit features for headlamp applications.

Improving efficiency with H-bridge topology

5:02

The micro learning shows how H-bridge topology improves efficiency and its key benefits. In addition, it explains how TLD5190Qx achieves the best performance.

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