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TPS51511 - Synchronous Switcher Controller

General Description

The TPS51511 is a 350-kHz D-CAP-mode synchronous switcher with a 2-A, source-only low drop-out (LDO) regulator.

It is specifically designed for low cost/low noise/low external-component count power systems for GPU applications.

Key Features

  • Switcher Controller:.
  • Adjustable-Output Buck Converter, 0.75 V to 3.3 V.
  • Wide Input Voltage Range: 3.0-V to 28-V.
  • D-CAP™ Mode with 100-ns Load Step Response.
  • Current Mode Option Supports Ceramic Output Capacitors.
  • Current Sensing From RDS(ON) or Resistor.
  • Internal Switch Supports Dynamic Output Voltage Change.
  • Advanced PGOOD Mask Feature.
  • Equipped With PGOOD, OVP and UVP.
  • Output Discharge.
  • 5 V UVL.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.ti.com TPS51511 SLVS735A – FEBRUARY 2007 – REVISED APRIL 2007 Synchronous Switcher Controller With 2-A LDO for GPU Power FEATURES • Switcher Controller: – Adjustable-Output Buck Converter, 0.75 V to 3.3 V – Wide Input Voltage Range: 3.0-V to 28-V – D-CAP™ Mode with 100-ns Load Step Response – Current Mode Option Supports Ceramic Output Capacitors – Current Sensing From RDS(ON) or Resistor – Internal Switch Supports Dynamic Output Voltage Change – Advanced PGOOD Mask Feature – Equipped With PGOOD, OVP and UVP – Output Discharge – 5 V UVLO Protection • LDO Regulator: – 2-A LDO for GPU I/O Power – Input Range: Up to 5 V – Output Range: 0.75 V to 3.