TPS549B22

ACTIVE

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

A newer version of this product is available
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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
NEW TPS546B24A ACTIVE 2.95-V to 18-V, stackable 20-A synchronous SWIFT™ buck converter with pin-strapping and PMBus 20-A, optimized-PMBus converter with telemetry and 4x stackability.
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Product details

Parameters

Vin (Min) (V) 1.5 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 25 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 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

  • Input Voltage (PVIN): 1.5 V to 18 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 4.1-mΩ and 1.9-mΩ Power MOSFETs With 25-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 Frequencies: 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 TPS549B22 With the WEBENCH® Power Designer

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Description

The TPS549B22 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 and TI integrated FETs with a high-side on-resistance of 4.1 mΩ and a low-side on-resistance of 1.9 mΩ. The device also features an 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 TPS549B22 device is available in 7 mm × 5 mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).

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open-in-new Compare products
Similar but not functionally equivalent to the compared device:
TPS548B22 ACTIVE 1.5-V to 18-V, 25-A synchronous SWIFT™ buck converter with differential remote sense A pin-compatible product without PMBus.
TPS549D22 ACTIVE 1.5-V to 16-V, 40-A synchronous SWIFT™ buck converter with differential remote sense and PMBus A pin-compatible product with higher 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 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 (...)

Features
  • D-CAP3™ control mode for fast transient response and low external component count
  • 0.5%, 900-mV reference voltage and differential remote sense enable tight output voltage regulation accuracy
  • Output voltage margining and fault reporting via PMBus

Design tools & simulation

SIMULATION MODEL Download
SNVMBB5.ZIP (237 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

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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