TPS51518 - Texas Instruments

TPS51518 Single Phase D-CAP/D-CAP2 Controller

The TPS51518 is a single phase, D-CAP™/ D-CAP2™ synchronous buck controller with 2-bit VID inputs which can select up to four independent externally programmable output voltage levels where full external programmability in the voltage level, step setting and voltage transition slew rate is desired. It is used for GFX applications where multiple voltage level.

Features

1
•2 Differential Voltage Feedback
• DC Compensation for Accurate Regulation
• Wide Input Voltage Range: 3 V to 28 V
• Flexible, 2-Bit VID Supports Output Voltage from 0.5 V to 2.0 V
• Adaptive On-Time Modulation with Selectable Control Architecture
  – D-CAP™ Mode at 350 kHz for Fast Transient Response
  – D-CAP2™ Mode at 350 kHz for Ultra-Low/Low ESR Output Capacitor
• 4700 ppm/°C, Low-Side RDS(on) Current Sensing
• Programmable Soft-Start Time and Output Voltage Transition Time
• Built-In Output Discharge
• Power Good Output
• Integrated Boost Switch
• Built-In OVP/UVP/OCP
• Thermal Shutdown (N.