• PMBus 1.2 Compliant Converters: 20 A and 30 A
• Input Voltage Range: 4.5 V to 18 V
• Output Voltage Range: 0.5 V to 5.5 V
• 5 mm × 7 mm LQFN Package
• Single Thermal Pad
• Integrated 5.5-mΩ and 2.0-mΩ Stacked NexFET™ Power Stage
• 500-mV to 1500-mV Reference for Adapative Voltage Scaling (AVS) and Margining through PMBus
• 0.5% Reference Accuracy at 600 mV and Above
• Lossless Low-Side MOSFET Current Sensing
• Voltage Mode Control with Input Feed-Forward
• Differential Remote Sensing
• Monotonic Start-Up into Pre-Biased Output
• Output Voltage and Output Current Reporting
• External Temperature Monitoring with 2N3904 Transistor
• Programmable via the PMBus interface
  • VOUT_COMMAND and AVS VOUT Transition Rate
  • Overcurrent Protection with Thermal Compensation
  • UVLO, Soft-Start and Soft-Stop
  • PGOOD, OV, UV, OT Levels
  • Fault Responses
  • Turn-On and Turn-Off Delays
• Thermal Shutdown
• Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
• Frequency Synchronization to an External Clock
• Footprint Compatible 20-A, 30-A Converters

• Test and Instrumentation
• Ethernet Switches, Optical Switches, Routers, Base Stations
• Servers
• Enterprise Storage SSD
• High-Density Power Solutions

The TPS544x25 devices are PMBus 1.2 Compliant, non-isolated DC-DC converters with integrated FETs, capable of high-frequency operation and 20-A or 30-A current output from a 5mm × 7mm package. High-frequency, low-loss switching, provided by an integrated NexFET™ power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current and an optional external temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.