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Texas Instruments TPS544C26 Synchronous Step-Down Converter

Texas Instruments TPS544C26 Synchronous Step-Down Converter is a highly integrated buck converter with D-CAP+ control topology for the fast transient response. All programmable parameters can be configured by the I²C interface and stored in NVM as the new default values to minimize the external component count. These features make the device well-suited for space-constrained applications. The TPS544C26 device is designed to work with Intel CPUs and fits well for single-phase, low-to-mid current SVID rails in Intel’s server and SoC platforms.

Fault management and status reports for the Overcurrent limit, V_OUT OVF/UVF, and OTF are provided on the device. The TPS544C26 device offers a complete set of telemetry, including V_OUT, I_OUT, and IC temperature. Additionally, input power monitoring through an external sensing resistor is provided for board-level power management. The Texas Instruments TPS544C26 device is lead-free and RoHS compliant without exemption.

Features

Single-chip power supply for SVID rails
Intel VR13 SVID compliant
I²C interface with NVM for configuration, telemetry (V/I/T), and fault reporting
Input power monitoring for DDR5 memory RAPL
Integrated 4.0mΩ and 1.0mΩ MOSFETs for 35A continuous current operation
Supports external 5V bias improving efficiency and enabling 2.7V minimum input voltage
V_OUT programmable from 0.25V to 3.04V
Precision voltage reference and differential remote sense for high output accuracy
- ±0.5% V_OUT tolerance from 0°C to 85°C T_J
- ±1% V_OUT tolerance from –40°C to 125°C T_J

D-CAP+™ control topology with a fast transient response, supporting all ceramic output capacitors
Programmable internal loop compensation, including droop
Selectable cycle-by-cycle valley current limit
Selectable operation frequency 0.6MHz to 1.2MHz with DCM or FCCM operation
Safe start-up into pre-biased outputs
Programmable soft-start time from 1ms to 16ms
Programmable soft-stop time from 0.5ms to 4ms
Open-drain power-good output (VRRDY) and Catastrophic fault indicator (CAT_FAULT#)
Programmable overcurrent, overvoltage, undervoltage, overtemperature protections
5mm × 6mm, 37-pin WQFN-FCRLF package

Applications

Server and cloud-computing POLs
Hardware accelerator
Network interface card

Texas Instruments TPS544C26 Synchronous Step-Down Converter

Features

Applications

Functional Block Diagram

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