• Integrated SWIFT™ 9.9-mΩ and 4.3-mΩ MOSFETs Support 15-A Continuous IOUT
• Wide Conversion Input Voltage Range: 1.5 V to 20 V (with Snubber)
• Output Voltage Range from 0.6 V to 5.5 V
• Available PMBus™ Adjustments
  • Voltage Margin and Adjustment
  • Soft-Start Time
  • Power-On Delay
  • VDD UVLO Level
  • Fault Reporting
  • Switching Frequency
• Supports All Ceramic Output Capacitors
• Reference Voltage: 600 mV with ±0.5% Tolerance from –40°C to 85°C ambient temperature
• D-CAP3™ Control Mode With Fast Load-Step Response
• Hiccup Over Current Protection
• Auto-Skipping Eco-Mode™ for High Light-Load Efficiency
• FCCM for Tight Output Ripple and Voltage Tolerance Requirements
• Pre-charged Startup Capability
• Eight Selectable Frequency Settings from 200 kHz to 1 MHz via PMBus
• 4.5 mm x 3.5 mm, 28-Pin, VQFN-CLIP Package
• Supported at the WEBENCH™ Design Center SWIFT™

• Server, Cloud-Computing, Storage
• Telecom & Networking, Point-of-Load (POL)
• IPCs, Factory Automation, PLC, Test Measurement
• Performance DSPs, FPGAs

The TPS549A20 is a small-sized, synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device offers ease-of-use and low bill-of-material count for space-conscious power systems.

This device features high-performance integrated MOSFETs, accurate 0.6-V reference, and an integrated boost switch. Competitive features include very-low external-component count, fast load-transient response, auto-skip mode operation, internal soft-start control, and no requirement for compensation. The device also features fault report via PMBus™ to simplify the power supply design

A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS549A20 is available in a 28-pin VQFN-CLIP package and is specified from –40°C to 125°C ambient temperature.