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TPS544E27

PREVIEW

4V to 18V input, 40A, PMBus and SVID synchronous step-down converter

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Data sheet

TPS544E27

PREVIEW
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 40 Vin (max) (V) 18 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 0.25 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Extended security, Forced PWM, Light-load efficiency, Overcurrent protection, PMBus, Power good, Prebias soft start, SVID, Soft-start adjustable, Synchronous rectification, Telemetry, UVLO adjustable, VID Interface, Voltage Margining Control mode D-CAP+ Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.009 Duty cycle (max) (%) 80
Rating Catalog Topology Buck Iout (max) (A) 40 Vin (max) (V) 18 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 0.25 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Extended security, Forced PWM, Light-load efficiency, Overcurrent protection, PMBus, Power good, Prebias soft start, SVID, Soft-start adjustable, Synchronous rectification, Telemetry, UVLO adjustable, VID Interface, Voltage Margining Control mode D-CAP+ Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.009 Duty cycle (max) (%) 80
WQFN-FCRLF (RXX) 37 30 mm² (6 mm × 5 mm)
  • Single chip power supply for SVID rails
  • Intel VR14 and VR13 compliant
  • VR14.Cloud compliant with telemetry level 1 and security level 2
  • PMBus 1.5 interface with NVM for configuration, telemetry (V/I/T), and fault reporting
  • Input voltage: 4V to 18V
  • Output voltage: 0.25V to 5.5V
  • Supports external 5V bias improving efficiency and enabling 2.7V minimum input voltage
  • Output current: 40A continuous and 50A peak
  • Cycle-by-cycle valley IOUT OCF limit programmable up to 50A
  • Input power monitoring (PIN sense)
  • Programmable DCM or FCCM operation
  • Switching frequency: 400kHz to 2MHz
  • Programmable internal loop compensation including droop (DC load line)
  • Programmable soft-start time from 0.5ms to 16ms
  • Programmable soft-stop time from 0.5ms to 4ms
  • Programmable output voltage slew rate: 0.625mV/µs to 25mV/µs
  • Programmable VIN UVLO, VOUT OVF/UVF, and OTF
  • Safe start-up into prebiased outputs
  • Precision voltage reference and differential remote sense for high output accuracy
    • ±0.5% tolerance from 0°C to 85°C junction
    • ±1% tolerance from –40°C to 125°C junction
  • Analog output current output pin (IMON)
  • D-CAP+™ control topology with fast transient response
  • Open-drain power-good output (VRRDY)
  • Single chip power supply for SVID rails
  • Intel VR14 and VR13 compliant
  • VR14.Cloud compliant with telemetry level 1 and security level 2
  • PMBus 1.5 interface with NVM for configuration, telemetry (V/I/T), and fault reporting
  • Input voltage: 4V to 18V
  • Output voltage: 0.25V to 5.5V
  • Supports external 5V bias improving efficiency and enabling 2.7V minimum input voltage
  • Output current: 40A continuous and 50A peak
  • Cycle-by-cycle valley IOUT OCF limit programmable up to 50A
  • Input power monitoring (PIN sense)
  • Programmable DCM or FCCM operation
  • Switching frequency: 400kHz to 2MHz
  • Programmable internal loop compensation including droop (DC load line)
  • Programmable soft-start time from 0.5ms to 16ms
  • Programmable soft-stop time from 0.5ms to 4ms
  • Programmable output voltage slew rate: 0.625mV/µs to 25mV/µs
  • Programmable VIN UVLO, VOUT OVF/UVF, and OTF
  • Safe start-up into prebiased outputs
  • Precision voltage reference and differential remote sense for high output accuracy
    • ±0.5% tolerance from 0°C to 85°C junction
    • ±1% tolerance from –40°C to 125°C junction
  • Analog output current output pin (IMON)
  • D-CAP+™ control topology with fast transient response
  • Open-drain power-good output (VRRDY)

The TPS544E27 is a highly-integrated buck converter with D-CAP+ control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in non-volatile memory (NVM) as the new default values to minimize the external component count. These features make the device well-designed for space-constrained applications.

The TPS544E27 device is designed to work with Intel CPUs and fits well for single-phase, low-to-mid current SVID rails in the Intel server and SoC platforms requiring VR13, VR14, or VR14.Cloud compliance.

Fault management and status reports for the overcurrent fault (OCF), VOUT overvoltage fault (OVF), undervoltage fault (UVF), and overtemperature fault are provided on the device. The TPS544E27 device provides a full set of telemetry, including output voltage, output current, and device temperature. Additionally, input power monitoring through an external sensing resistor is provided for board-level power management.

TPS544E27 is a lead-free device and is RoHS compliant without exemption.

The TPS544E27 is a highly-integrated buck converter with D-CAP+ control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in non-volatile memory (NVM) as the new default values to minimize the external component count. These features make the device well-designed for space-constrained applications.

The TPS544E27 device is designed to work with Intel CPUs and fits well for single-phase, low-to-mid current SVID rails in the Intel server and SoC platforms requiring VR13, VR14, or VR14.Cloud compliance.

Fault management and status reports for the overcurrent fault (OCF), VOUT overvoltage fault (OVF), undervoltage fault (UVF), and overtemperature fault are provided on the device. The TPS544E27 device provides a full set of telemetry, including output voltage, output current, and device temperature. Additionally, input power monitoring through an external sensing resistor is provided for board-level power management.

TPS544E27 is a lead-free device and is RoHS compliant without exemption.

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Technical documentation

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* Data sheet TPS544E27 4V to 18V Input, 40A Buck Converter With SVID and PMBus® datasheet (Rev. A) PDF | HTML Jun 26, 2026
Application brief Using Improved TPS544E27 in Existing TPS544C26 Applications. PDF | HTML Dec 17, 2025
Application note Point-of-Load Designs in Data Center Applications for Intel Xeon Sapphire Rapids Scalable Processors (Rev. C) PDF | HTML Oct 9, 2024

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS544E27EVM — TPS544E27 evaluation module

The TPS544E27EVM evaluation module (EVM) is configured to evaluate the operation of the TPS544E27 converter in a single-output configuration. The input voltage range is 8V to 16V, the output voltage is 1V and the maximum output current is 40A. The TPS544E27EVM allows programming and monitoring (...)
User guide: PDF | HTML
Supported products & hardware
Evaluation board

USB-TO-GPIO2 — USB-TO-GPIO2 USB interface adapter evaluation module

This EVM serves as an interface adapter or a bridge between a host PC and one or multiple targeted devices through a standard type-A to mini-B USB cable. The communication between the USB interface adapter and the host PC is via USB, while the communication between the USB interface adapter and (...)
User guide: PDF | HTML
Supported products & hardware
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Application software & framework

FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software

Fusion Digital Power™ graphical user interface (GUI) software is used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.

Supported products & hardware
Design tool

PMBUS-DESIGN-TOOL — Support PMBus Interface for Buck Converters and Modules

Digital Fusion support for PMBus converters and modules. USB-TO-GPIO2 adapter is needed.
Supported products & hardware
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WQFN-FCRLF (RXX) 37 Ultra Librarian
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