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Product details

Parameters

Vin (Min) (V) 1.5 Vin (Max) (V) 16 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 40 Iq (Typ) (uA) 2000 Switching frequency (Min) (kHz) 315 Switching frequency (Max) (kHz) 1125 Features Adjustable Current Limit, Enable, Light Load Efficiency, Over Current Protection, I2C/PMBus, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable, Voltage Margining, Adaptive/Dynamic Voltage Scaling, Differential Remote Sense, Forced PWM, Soft Start Adjustable Operating temperature range (C) -40 to 85 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

  • 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

All trademarks are the property of their respective owners.

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Description

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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Similar but not functionally equivalent to the compared device:
TPS548D22 ACTIVE 1.5-V to 16-V, 40-A synchronous SWIFT™ buck converter with differential remote sense A pin-compatible product without PMBus.
TPS549B22 ACTIVE 1.5-V to 18-V, 25-A synchronous SWIFT™ buck converter with differential remote sense and PMBus A pin-compatible product with lower current.

Technical documentation

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
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.
Features
  • 40A DC Steady State Output Current
  • ±0.5% 0.9VREF Tolerance Over -40 to 150°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3 Control Loop to Support Large Bulk Cap and/or Small MLCCs Without External Compensation
  • Eco-Mode and FCCM Selectable
  • Temp Compensated and Programmable Current (...)

Design tools & simulation

SIMULATION MODEL Download
SLUM547.ZIP (208 KB) - PSpice Model
SIMULATION TOOL 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
  • (...)

CAD/CAE symbols

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

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

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