1.5-V to 20-V, 15-A synchronous SWIFT™ buck converter with PMBus
Product details
Parameters
Package | Pins | Size
Features
- Integrated SWIFT 9.9-mΩ and 4.3-mΩ MOSFETs Support 15-A Continuous IOUT
- Wide Conversion Input Voltage Range: 1.5 V to 20 V (with Snubber)
- Output Voltage Range from 0.6 V to 5.5 V
- Available PMBus Adjustments
- Voltage Margin and Adjustment
- Soft-Start Time
- Power-On Delay
- VDD UVLO Level
- Fault Reporting
- Switching Frequency
- Supports All Ceramic Output Capacitors
- Reference Voltage: 600 mV with ±0.5% Tolerance from –40°C to 85°C ambient temperature
- D-CAP3 Control Mode With Fast Load-Step Response
- Hiccup Over Current Protection
- Auto-Skipping Eco-Mode for High Light-Load Efficiency
- FCCM for Tight Output Ripple and Voltage Tolerance Requirements
- Pre-charged Startup Capability
- Eight Selectable Frequency Settings from
200 kHz to 1 MHz via PMBus - 4.5 mm x 3.5 mm, 28-Pin, VQFN-CLIP Package
- Supported at the WEBENCH Design Center
Description
The TPS549A20 is a small-sized, synchronous buck converter with anadaptive on-time D-CAP3 control mode. The device offers ease-of-use and low bill-of-material countfor space-conscious power systems.
This device features high-performance integrated MOSFETs, accurate 0.6-V reference, andan integrated boost switch. Competitive features include very-low external-component count, fastload-transient response, auto-skip mode operation, internal soft-start control, and no requirementfor compensation. The device also features fault report viaPMBus to simplify the power supply design
A forced continuous conduction mode helps meet tight voltage regulation accuracyrequirements for performance DSPs and FPGAs. The TPS549A20 is available in a28-pin VQFN-CLIP package and is specified from –40°C to 125°C ambient temperature.
For all available packages, see the orderableTechnical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS549A20 1.5-V to 20-V (4.5-V to 25-V Bias) Input, 15-A Synchronous Step-Down SWIFT™ Converter With PMBus™ datasheet (Rev. A) | Dec. 02, 2015 |
Selection guide | Buck Converter Quick Reference Guide (Rev. A) | Mar. 31, 2020 | |
Application note | Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) | Jan. 08, 2020 | |
Application note | DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications | Aug. 14, 2019 | |
Technical articles | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 | |
Technical articles | Simplifying loop compensation and poles and zeros calculations | Mar. 18, 2016 | |
Application note | SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC | Feb. 22, 2016 | |
User guide | Using the TPS549A20: Synchronous Step-Down SWIFT™ Converter | Nov. 30, 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPS549A20EVM-737 is designed to help the user easily evaluate and test the operation and functionality of the TPS549A20 buck converter. The EVM converts a 1.5-V to 20-V input voltage to a regulated 1.2-V output voltage that delivers up to 15 A in a 4.5-mm x 3.5-mm QFN package. This board (...)
Features
- D-CAP3™ control for fast transient response and low external component count
- 0.5%, 600-mV reference voltage and differential remote sense enable tight output voltage regulation accuracy
- Output voltage margining and fault reporting via PMBus
Software development
Features
Some of the tasks you can perform with the GUI include:
- Turn on or off the power supply output, either through the hardware control line or the PMBus OPERATION command
- Monitor real-time data. Items such as input voltage, output voltage, output current, temperature, and warnings/faults are continuously (...)
Design tools & simulation
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
Design files
-
download PMP11399 BOM .pdf (287KB) -
download PMP11399 Assembly Drawing .pdf (531KB) -
download PMP11399 CAD Files.zip (9337KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN-CLIP (RVE) | 28 | View options |
Ordering & quality
- 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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