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Texas Instruments TPS5138x 8A Synchronous Buck Converters

Texas Instruments TPS5138x 8A Synchronous Buck Converters come with adaptive on-time D-CAP3 control mode. Integrated low RDS(on) power MOSFETs enable high efficiency and offer ease of use with minimum external component count for space-constrained power systems. Features include an accurate reference voltage, fast load transient response, and auto-skip mode operation for light load efficiency. The devices also have OOA light load operation with > 25kHz switching frequency, D-CAP3 control mode with a good line, and load regulation, and does not require external compensation.

The Texas Instruments TPS51383 provides a fixed 3.36V 8AMAX output and a 3.3V, 100mAMAX LDO output with switch-over functionality. The TPS51384 offers a fixed 1.82V 8AMAX output and a 1.8-V, 100-mAMAX LDO with switch-over functionality. Both the TPS51383 and TPS51384 have ultra-low quiescent current functions for extended battery life in system standby mode. The TPS5138x devices are available in a thermally enhanced 12-pin QFN package and are designed to operate from –40°C to 125°C junction temperature.

Features

  • 4.5V to 24V input voltage range
  • 3.36V output voltage (TPS51383)
  • 3.3V, 100mA LDO with switch over (TPS51383)
  • 1.82V output voltage (TPS51384)
  • 1.8V, 100mA LDO with switch over (TPS51384)
  • Integrated 22mΩ and 11mΩ MOSFETs
  • Support 8A continuous IOUT
  • 80µA low quiescent current
  • ±1% reference voltage at 25°C
  • ±1.5% reference voltage at -40°C to 125°C
  • D-CAP3™ control mode for fast transient response
  • Support POSCAP and all MLCC output capacitor
  • Output discharge function
  • Selectable PSM and OOA modes under light load
  • Power Good indicator to monitor the output voltage
  • Latched output OV and UV protection
  • Non-latched UVLO and OT protection
  • Cycle-by-cycle overcurrent protection
  • Built-in output discharge feature
  • Small 2.00mm × 3.00mm HotRod™ QFN package

Applications

  • Notebook and PC computers
  • Ultrabooks, tablet computers
  • TV and STB, point-of-load (POL)
  • Distributed power systems

Functional Block Diagram

Block Diagram - Texas Instruments TPS5138x 8A Synchronous Buck Converters

Related Development Tool

Texas Instruments TPS51383EVM Converter Evaluation Module

A single synchronous buck converter board provides 3.36V at 8A from a 4.5V to 24V input.

Learn Moreabout Texas Instruments TPS51383EVM Converter Evaluation Module View Productsrelated to Texas Instruments TPS51383EVM Converter Evaluation Module
Published: 2022-11-09 | Updated: 2022-11-21