Calculation tool
Data sheet
TPS549A20
- 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
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 orderableSimilar products you might be interested in
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Technical documentation
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View all 8 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | 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) | PDF | HTML | 02 Dec 2015 |
| EVM User's guide | TPS549A20 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 | Minimize the impact of the MLCC shortage on your power application | 29 Mar 2019 | ||
| Technical article | Simplifying loop compensation and poles and zeros calculations | 18 Mar 2016 | ||
| Application note | SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC | 22 Feb 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
TPS549A20EVM-737 — TPS549A20 DCAP3 High Efficiency 15A Synchronous Buck Converter Evaluation Module
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 (...)
Application software & framework
FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software
Fusion Digital Power™ graphical user interface (GUI) software is used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
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 (...)
Reference designs
PMP11399 — PMBus Power System for Enterprise Ethernet Switches Reference Design
PMP11399 is a complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, VTT termination, and auxiliary voltages commonly found on high-performance Ethernet Switches. The hardware is accompanied by a GUI that allows the user to perform real-time configuration and monitoring of the power (...)
| Package | Pins | Download |
|---|---|---|
| VQFN-CLIP (RVE) | 28 | View options |
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