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Texas Instruments TPS54116-Q1 Synchronous Step-Down Converters

Texas Instruments TPS54116-Q1 Synchronous Step-Down Converters have two integrated MOSFETs and a 1A sink/source double data rate (DDR) VTT termination regulator with VTTREF buffered reference output. These buck regulators minimize solution size by integrating the MOSFETs and reducing inductor size with up to 2.5MHz switching frequency. The switching frequency can be set above the medium wave radio band for noise-sensitive applications and synchronizes to an external clock. The synchronous rectification keeps the frequency fixed across the entire output load range. The efficiency is maximized through integrated 25mΩ low-side and 33mΩ high-side MOSFETs. The cycle-by-cycle peak current limit protects the Texas Instruments TPS54116-Q1 during an over-current condition. It is also adjustable with a resistor at the ILIM pin to optimize for smaller inductors.

Features

  • AEC-Q100 qualified with the following results
    • Device temperature Grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • 4A synchronous buck converter
    • Integrated 33mΩ high-side and 25mΩ low-side MOSFETs
    • Fixed frequency current-mode control
    • Adjustable frequency from 100kHz to 2.5MHz
    • Synchronizable to an external clock
    • 0.6V ±1% voltage reference over temperature
    • Adjustable cycle-by-cycle peak current limit
    • Monotonic start-up into pre-biased outputs
  • Single-chip DDR2, DDR3, and DDR3L memory power solution
  • 1A source/sink termination LDO with ±20mV DC accuracy
    • Stable with 2×10µF MLCC capacitor
    • 10mA source/sink buffered reference output regulated to within 49% to 51% of VDDQ
  • Independent enable pins with adjustable UVLO and hysteresis
  • Thermal shutdown
  • –40°C to 150°C operating TJ
  • 24-pin, 4mm×4mm WQFN package

Applications

  • DDR2, DDR3, DDR3L, and DDR4 memory power supplies in embedded computing systems
  • SSTL_18, SSTL_15, SSTL_135, SSTL_12 and HSTL termination
  • Infotainment and cluster
  • Advanced Driver Assistance Systems (ADAS)

Simplified Schematic

Schematic - Texas Instruments TPS54116-Q1 Synchronous Step-Down Converters

Related Development Tool

Texas Instruments TPS54116-Q1EVM-830 DDR Power Solution EVM

Facilitates the evaluation of the TPS54116-Q1, an automotive DDR power solution .

Learn Moreabout Texas Instruments TPS54116-Q1EVM-830 DDR Power Solution EVM View Productsrelated to Texas Instruments TPS54116-Q1EVM-830 DDR Power Solution EVM
Published: 2016-09-13 | Updated: 2025-03-06