TPS51511 - Texas Instruments

TPS51511 Synchronous Switcher Controller

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. The integrated 'OD' switch in the buck controller supports dynamic output voltage change. The current mode option of the synchronous.

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 3.3 V
  – Requires Only 20-µF Ceramic Output Capacitor for LDO Output
  – Optional.