TPS542A50RJMR

TPS542A50 is a high-efficiency synchronous buck converter with differential remote sensing and I2C. The device offers fixed-frequency voltage-mode control with pin strapping and selectable internal compensation to reduce system cost and complexity. PWM can be synchronized to an external clock via the SYNC pin. Other key features include PFM (for improved light-load efficiency), low shutdown quiescent current consumption, adjustable UVLO (via the EN pin), and monotonic startup into pre-biased conditions. The device also features an I2C interface for device configuration and output voltage regulation. The TPS542A50 is a lead-free device, fully RoHS compliant without requiring any exemptions.

Applications

• Enterprise storage, SSD
• ASIC, SoC, FPGA, DSP core and I/O power rails
• Wired network switches and routers
• Industrial machinery and machine tools

Key features

• Integrated 9.1-mΩ and 2.6-mΩ MOSFETs support up to 15-A output current
• 0.5-V to 5.5-V output voltage range
• Fixed-frequency voltage control mode with selectable internal compensation
• Seven selectable frequency settings from 400 kHz to 2.2 MHz
• Synchronizes to an external clock
• Fully differential remote sense
• Device configurable by analog pinstrap resistors or through I2C interface
• VOUT adjustment with controlled slew rate through I2C from -20% to +10% in 0.028% steps
• Six selectable overcurrent limits, four soft-start slew rates, and two I2C addresses
• Monotonic start-up into pre-biased outputs
• EN pin allowing for adjustable input UVLO
• Power good indicator
• 17-μA typical shutdown quiescent current draw
• Selectable FCCM or PFM for light load efficiency
• –40 to +150°C operating junction temperature
• 4-mm × 4.5-mm VQFN package
• Create a custom design using the TPS542A50 with the WEBENCH Power Designer