TPS544C25

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4.5-V to 18-V, 30-A Voltage Mode PMBus™ SWIFT™ Step-Down DC-DC Converter with FSYNC

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 18 Vout (Min) (V) 0.5 Vout (Max) (V) 5 Iout (Max) (A) 30 Iq (Typ) (mA) 7.7 Iq (Typ) (uA) 7700 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Frequency Synchronization, I2C/PMBus, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable, Voltage Margining, Differential Remote Sense, Over Current Protection, Adjustable Current Limit, Forced PWM, Soft Start Adjustable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

LQFN-CLIP (RVF) 40 35 mm² 7 x 5 open-in-new Find other Buck converters (integrated switch)

Features

  • 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

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Description

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 5 mm × 7 mm 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.

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Technical documentation

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Type Title Date
* Datasheet TPS544x25 4.5-V to 18-V, 20-A and 30-A SWIFT Synchronous Buck Converters with PMBus and Frequency Synchronization datasheet May 15, 2015
Application notes Programming the NVM of PMBus Buck Converters to Support Mass-Production Needs (Rev. B) May 13, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Maximizing power density and thermal performance in power-module designs Dec. 12, 2018
Application notes Analysis and Design of Input Filter for DC-DC Circuit Nov. 27, 2017
Application notes SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC Feb. 22, 2016
Application notes MOSFET power losses and how they affect power-supply efficiency Jan. 26, 2016
User guides Using the TPS544B25 and TPS544C25 (Rev. A) Sep. 16, 2015
Technical articles Select the correct PMBus POL solution for your application Aug. 03, 2015
Application notes Not All Jitter Is Created Equal (Rev. A) Jul. 04, 2015

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description

The TPS544C25EVM-681 evaluation module (EVM) is designed as a single output DC-DC converter that demonstrates a typical low-voltage application while providing a number of test points to evaluate the performance. It uses a nominal 12-V input bus to produce a regulated 0.95-V output at up to (...)

Features

 

  • Regulated 0.95-V output up to 30-ADC, steady-state output current
  • Configurable features via the PMBus interface include Output Voltage, UVLO, Soft Start, Enable, Fault Limits and Programmable Response
  • Convenient Test Points for Probing Critical Waveforms
  • Optional External Temperature Sensor

 

Software development

DRIVERS & LIBRARIES Download
Linux Driver for PMBUS
PMBUSSW-LINUX The Linux driver supports PMBus controlled Buck Controllers. The Linux driver supports communication through the PMBus and interfaces with the HWMon framework.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • tps40400
  • tps40422
  • tps544b20
  • tps544b25
  • (...)

Design tools & simulation

SIMULATION MODELS Download
SLUM462.ZIP (109 KB) - PSpice Model
SIMULATION MODELS Download
SLUM467A.ZIP (158 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Reference Design for Powering a Xilinx Zynq UltraScale+ Remote Radio Head (RRH) or Backhaul (BH)
PMP12004-HE — This design for powering Xilinx Zynq UltraScale+ (www.xilinx.com/power) Remote Radio Heads (RRH) features the TPS6508640 and is a small and highly efficient solution. The PMIC reduces size, cost, and power loss by having integrated rails into 1 device, high switching frequency and separate rails for (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
12V to 1V 30A Voltage Mode Synchronous Buck Converter with PMBus Control Reference Design
PMP20023 Fixed frequency voltage mode control is used for communications and computing applications where a predictable frequency and / or synchronization to an external clock is needed. With control and power in one IC and inductor on top of the IC with its raised leads, a very small size solution is (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
PMBus Power System for Enterprise Ethernet Switches Reference Design
PMP11399 PMP11399 is a complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, VTT termination, and auxiliary voltages commonly found on high-performance Ethernet Switches. The hardware is accompanied by a GUI that allows the user to perform real-time configuration and monitoring of the power (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
30A PMBus Reference Design for Xilinx Zynq Ultrascale+ ZU9EG MPSoC Core Rail for Base Stations
PMP11328 The PMP11328 is a high power density 30A PMBus power supply meeting the Xilinx Ultrascale+ ZU9EG FPGA core rail power specifications for Base Station Remote Radio Unit (RRU) applications. The power supply regulates 0.85V for the core rail at 25A in 55mm x 40mm total power supply PCB area. PMBus (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Generating AVS SmartReflex Core Voltage for K2E Using TPS544C25 and PMBus Reference Design
TIDEP0042 The K2E requires the use of AVS SmartReflex control for the CVDD core voltage. This design provides method of generating the proper voltage using software and the PMBus interface of the TPS544C25. The circuit can be implemented on the XEVMK2EX.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Generating AVS SmartReflex core voltage, PMBus for K2E reference design
TIDEP0041 The K2E requires the use of AVS SmartReflex control for the CVDD core voltage. This design provides method of generating the proper voltage without the need for any software. The circuit is currently implemented on the XEVMK2EX.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Complete PMBus Power System for Enterprise Ethernet Switches Reference Design
PMP10896 Complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, and auxiliary voltages found on high-performance Ethernet Switches.
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
LQFN-CLIP (RVF) 40 View options

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