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TPS549B22

ACTIVE

1.5-V to 18-V, 25-A synchronous SWIFT™ buck converter with differential remote sense and PMBus

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Data sheet

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TPS546B24A ACTIVE 2.95-V to 18-V, stackable 20-A synchronous SWIFT™ buck converter with pin-strapping and PMBus Stackable (x4) converter with PMBus.

TPS549B22

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 25 Vin (min) (V) 1.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 315 Switching frequency (max) (kHz) 1125 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Light Load Efficiency, Over Current Protection, PMBus, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable, Voltage Margining Control mode D-CAP3 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 2000 Duty cycle (max) (%) 80
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 25 Vin (min) (V) 1.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 315 Switching frequency (max) (kHz) 1125 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Light Load Efficiency, Over Current Protection, PMBus, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable, Voltage Margining Control mode D-CAP3 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 2000 Duty cycle (max) (%) 80
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • Input voltage (PVIN): 1.5V to 18V
  • Input bias voltage (VDD) range: 4.5V to 22V
  • Output voltage range: 0.6V to 5.5V
  • Integrated, 4.1mΩ and 1.9mΩ power MOSFETs with 25A continuous output current
  • Voltage reference 0.6V to 1.2V in 50mV steps using VSEL pin
  • ±0.5%, 0.9VREF tolerance range: –40°C to +125°C junction temperature
  • True differential remote sense amplifier
  • D-CAP3™ control mode
  • Adaptive on-time control with 8 PMBus frequencies: 315kHz, 425kHz, 550kHz, 650kHz, 825kHz, 900kHz, 1.025MHz, 1.125MHz
  • Temperature compensated and programmable current limit with RILIM and OC clamp
  • Choice of hiccup or latch-off OVP or UVP
  • VDD UVLO External Adjustment by Precision EN
  • Prebias start-up support
  • Eco-mode and FCCM selectable
  • Full suite of fault protection and PGOOD
  • Standard VOUT_COMMAND and VOUT_MARGIN (HIGH and LOW)
  • Pin-strapping and on-the-fly programming
  • Fault reporting and warning
  • NVM backup for selected commands
  • 1MHz PMBus with PEC and SMB_ALRT#
  • Create a custom design using the TPS549B22 with the WEBENCH Power Designer
  • Input voltage (PVIN): 1.5V to 18V
  • Input bias voltage (VDD) range: 4.5V to 22V
  • Output voltage range: 0.6V to 5.5V
  • Integrated, 4.1mΩ and 1.9mΩ power MOSFETs with 25A continuous output current
  • Voltage reference 0.6V to 1.2V in 50mV steps using VSEL pin
  • ±0.5%, 0.9VREF tolerance range: –40°C to +125°C junction temperature
  • True differential remote sense amplifier
  • D-CAP3™ control mode
  • Adaptive on-time control with 8 PMBus frequencies: 315kHz, 425kHz, 550kHz, 650kHz, 825kHz, 900kHz, 1.025MHz, 1.125MHz
  • Temperature compensated and programmable current limit with RILIM and OC clamp
  • Choice of hiccup or latch-off OVP or UVP
  • VDD UVLO External Adjustment by Precision EN
  • Prebias start-up support
  • Eco-mode and FCCM selectable
  • Full suite of fault protection and PGOOD
  • Standard VOUT_COMMAND and VOUT_MARGIN (HIGH and LOW)
  • Pin-strapping and on-the-fly programming
  • Fault reporting and warning
  • NVM backup for selected commands
  • 1MHz PMBus with PEC and SMB_ALRT#
  • Create a custom design using the TPS549B22 with the WEBENCH Power Designer

The TPS549B22 device is a compact single buck converter with adaptive on-time, D-CAP3 control mode. The device is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count and space-conscious power systems.

This device features full differential sense and TI integrated FETs with a high-side on-resistance of 4.1mΩ and a low-side on-resistance of 1.9mΩ. The device also features an accurate 0.5%, 0.9V reference with an ambient temperature range between –40°C and +125°C. Competitive features include: very low external component count, accurate load regulation and line regulation, auto-skip or FCCM mode operation, and internal soft-start control.

The TPS549B22 device is available in 7mm × 5mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).

The TPS549B22 device is a compact single buck converter with adaptive on-time, D-CAP3 control mode. The device is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count and space-conscious power systems.

This device features full differential sense and TI integrated FETs with a high-side on-resistance of 4.1mΩ and a low-side on-resistance of 1.9mΩ. The device also features an accurate 0.5%, 0.9V reference with an ambient temperature range between –40°C and +125°C. Competitive features include: very low external component count, accurate load regulation and line regulation, auto-skip or FCCM mode operation, and internal soft-start control.

The TPS549B22 device is available in 7mm × 5mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).
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TPS548B22 ACTIVE 1.5-V to 18-V, 25-A synchronous SWIFT™ buck converter with differential remote sense Offers same functionality without PMBus.
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Technical documentation

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Type Title Date
* Data sheet TPS549B22 1.5V to 18V VIN , 4.5V to 22V VDD , 25A SWIFT Step-Down Converter With Full Differential Sense and PMBus® datasheet (Rev. A) PDF | HTML 27 Feb 2024
Application note Measuring the Bode Plot of D-CAP™, D-CAP2™, and D-CAP3™ DC/DC Converters (Rev. A) PDF | HTML 21 Apr 2023
EVM User's guide TPS549B22 SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 03 Aug 2021
Application note DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications (Rev. A) PDF | HTML 04 May 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML 08 Jan 2020
Technical article Powering FPGAs - What to consider with Xilinx UltraScale+ FPGAs PDF | HTML 29 Jan 2018
Application note Calculating Output Capacitance to Meet Transient and Ripple Requirements 02 May 2017

Design & development

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

Evaluation board

TPS549B22EVM-847 — TPS549B22 DCAP3 High Performance, 25-A Single Synchronous Step-Down Converter Evaluation Module

The TPS549B22EVM-847 is designed to help the user easily evaluate and test the operation and functionality of the TPS549B22 buck converter. The EVM converts a 1.5-V to 18-V input voltage to a regulated 1.0-V output voltage that delivers up to 25 A in a 5-mm x 7-mm QFN package. This board has test (...)

User guide: PDF | HTML
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Simulation model

TPS549B22 PSpice Transient Model

SNVMBB5.ZIP (237 KB) - PSpice Model
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Package Pins CAD symbols, footprints & 3D models
LQFN-CLIP (RVF) 40 Ultra Librarian
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