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

Target 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
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