TLD5541-1QU中文资料Power-Lighting ICs-LITIX™ - Automotive LED Driver IC-LITIX™ Power Flex数据手册Infineon规格书

描述 Description

The TLD5541-1QU is a synchronous MOSFET H-Bridge DC/DC controller with built in protection features and SPI interface. This concept of a synchronous and seamless buck-boost regulation provides a very efficient solution for circuits where the output (load) voltage is on the same level as the input voltage, e.g. in short chains with 2 to 3 high power LEDs or laser diodes connected to a 12 V electrical system. Furthermore in combination with its fast dynamic load jump behavior, it is also an innovative solution for realizing cost-optimized LED headlamps with complete protection and diagnosis features – e.g. by driving two, three or more separately switched LED loads in one string, with up-to 55 V string voltage, with just one TLD5541-1QU.

特性 Features

• MOSFET H-Bridge with Single Inductor DC/DC Controller for high power BUCK-BOOST LED control
• Constant Current and Constant Voltage Regulation
• Wide VIN Range (IC 4.5 V to 40 V, Power 4.5 V to 55 V)
• Wide LED forward voltage Range (2V up to 55V)
• Switching Frequency Range from 200 kHz to 700 kHz
• LED current accuracy +/- 3% at TJ = 25°C and 4% over the whole automotive temperature range
• 16-bit SPI for diagnostics and control, providing daisy chain capability
• Maximum Efficiency in every condition (up to 96%)
• Drives multiple loads with a single IC thanks to the Fast Output Discharge operation
• Limp Home Function (Fail Safe Mode)
• EMC optimized device: Auto and programmable Spread Spectrum
• LED and Input current sense with dedicated monitor Outputs
• 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: Analog and PWM dimming
• Available in a small thermally enhanced PG-TQFP-48-9 package
• Automotive AEC qualified

优势:

应用 Application

• Especially designed for driving high power LEDs and Laser modules in automotive applications with very high efficiency
• Ideal for driving (LED) loads on supply/battery voltage level
• Full LED headlamp assemblies e.g. LB, HB, DRL/POS with just one DC/DC
• Power supply for high power Matrix and Pixel light sources like LED or Laser modules for DMD or parallel LED arrays
• General purpose current/voltage controlled DC/DC LED driver