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TPS549D22

ACTIVE

1.5-V to 16-V, 40-A synchronous SWIFT™ buck converter with differential remote sense and PMBus

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Data sheet

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TPS546D24S ACTIVE 2.95-V to 16-V, stackable 40-A synchronous SWIFT™ step-down PMBus® converter with extended security Stackable (x4) converter with PMBus and extended security

TPS549D22

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 40 Vin (min) (V) 1.5 Vin (max) (V) 16 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) 40 Vin (min) (V) 1.5 Vin (max) (V) 16 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 Range (PVIN): 1.5 V to 16 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 2.9-mΩ and 1.2-mΩ Power MOSFETs With 40-A Continuous Output Current
  • Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
  • ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop
  • Adaptive On-Time Control with 8 PMBusTM Frequency: 315 kHz, 425 kHz, 550 kHz, 650 kHz, 825 kHz, 900 kHz, 1.025 MHz, 1.125 MHz
  • 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
  • 1-MHz PMBus with PEC and SMB_ALRT#
  • Create a Custom Design Using the TPS549D22 With the WEBENCH® Power Designer
  • Input Voltage Range (PVIN): 1.5 V to 16 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 2.9-mΩ and 1.2-mΩ Power MOSFETs With 40-A Continuous Output Current
  • Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
  • ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop
  • Adaptive On-Time Control with 8 PMBusTM Frequency: 315 kHz, 425 kHz, 550 kHz, 650 kHz, 825 kHz, 900 kHz, 1.025 MHz, 1.125 MHz
  • 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
  • 1-MHz PMBus with PEC and SMB_ALRT#
  • Create a Custom Design Using the TPS549D22 With the WEBENCH® Power Designer

The TPS549D22 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It 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, TI integrated FETs with a high-side on-resistance of 2.9 mΩ and a low-side on-resistance of 1.2 mΩ. The device also features accurate 0.5%, 0.9-V 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 TPS549D22 device is available in 7-mm × 5-mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).

The TPS549D22 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It 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, TI integrated FETs with a high-side on-resistance of 2.9 mΩ and a low-side on-resistance of 1.2 mΩ. The device also features accurate 0.5%, 0.9-V 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 TPS549D22 device is available in 7-mm × 5-mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).
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TPS548D22 ACTIVE 1.5-V to 16-V, 40-A synchronous SWIFT™ buck converter with differential remote sense Equivalent part without PMBus.
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Technical documentation

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Type Title Date
* Data sheet TPS549D22 1.5-V to 16-V VIN, 4.5-V to 22-V VDD, 40-A SWIFT™ Synchronous Step-Down Converter with Full Differential Sense and PMBus datasheet (Rev. A) PDF | HTML 06 Sep 2017
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 TPS549D22 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 Is PMBus still useful without telemetry? PDF | HTML 10 May 2017
Application note Calculating Output Capacitance to Meet Transient and Ripple Requirements 02 May 2017
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev 25 Jan 2017

Design & development

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

Evaluation board

TPS549D22EVM-784 — TPS549D22 DCAP3 High Performance, 40-A Single Synchronous Step-Down Converter Evaluation Module

The TPS549D22EVM-784 evaluation module (EVM) uses the TPS549D22. The TPS549D22 is a D-CAP3™ mode, 40A synchronous buck converter with integrated MOSFETs supporting PMBUS. It provides a fixed 1.0V output at up to 40A from a 12V input bus.
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS549D22 PSpice Transient Model

SLUM547.ZIP (208 KB) - PSpice Model
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Package Pins CAD symbols, footprints & 3D models
LQFN-CLIP (RVF) 40 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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