TPS546E25 Datasheet | Texas Instruments

Features - 4V to 18V input voltage without external bias - 2.7V to 18V input voltage with external bias - 0.4V to 5.5V output voltage - Supports 50A single-phase or 2 ×, 3 ×, or 4 × stacked configurations - Rdson_HS = 2.9mΩ, Rdson_LS = 1mΩ - 400k Hz to 2MHz operating frequency (four discrete settings through pinstrap, additional settings through PMBus) - PMBus® programmability - Revision 1.5 pliant with PASSKEY security feature - Input voltage, output voltage, output current, temperature telemetry - Programmable overcurrent, overvoltage, undervoltage, overtemperature protections - Includes single mand write function in stacked configuration - Extended write protection feature - Non-volatile memory to store configuration settings - Two methods for programming the output voltage - Internal resistor divider (discrete settings), with boot-up voltage selected by pin strapping - External resistor divider (continuous settings), with boot-up voltage selected by VBOOT field - Precision voltage reference and differential remote sense for high output accuracy - +/- 0.5% DAC accuracy from 0°C to 85°C junction - +/- 1% VOUT tolerance from - 40°C to 125°C junction - Selectable FCCM/DCM in single phase only - Start-up without PMBus munication through pin strapping - Safe start-up into prebiased output - Programmable soft-start time from 0.5ms to 16ms - Programmable soft-stop time from 0.5ms to 4ms - D-CAP4 control topology with fast transient response, supporting all ceramic output capacitors - Programmable internal loop pensation - Selectable cycle-by-cycle valley current limit - Open-drain power-good output 2 Applications - Server and cloud-puting POLs - Hardware accelerator - Network interface card 3 Description The TPS546E25 device is a highly integrated, buck converter with D-CAP4 control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in NVM as the new default values to minimize the external ponent...