TIDA-01444

180-W, Dual-Channel, Step-Down Converter Reference Design with 97% Efficiency for Server PSU

TIDA-01444

Design files

Overview

This is a reference design for server PSU, PC PSU and other step-down converter applications that implements a 180-W buck, dual-channel DC/DC converter with a regulatory 12-V DC input voltage designed to provide the terminal load voltage with greater than 97% efficiency and good thermal performance. The switching frequency synchronization between the dual channels is easily realized. The true differential remote sense of the dual outputs compensates the line voltage drop providing more accurate voltage for the terminal load. For improved high-power density and a low profile, this integrated circuit reference design uses a planar inductor to replace the traditional discrete inductor. This design has protection and temperature-sense functions.

Features
  • 180-W dual output buck converter
  • Efficiency: 96% (typ) at 180-W load; 97% (typ) at 83-W load
  • Switching frequency synchronization between dual channels
  • Differential remote sensing for both output channels
  • Planner inductor as output inductor
  • Compact form factor (47 mm x 59 mm) for compatibility with server PSU application

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUD57.PDF (2565 K)

Reference design overview and verified performance test data

TIDRRK8.PDF (352 K)

Detailed schematic diagram for design layout and components

TIDRRK9.PDF (210 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRRL0.PDF (197 K)

Detailed overview of design layout for component placement

TIDRRL2.ZIP (1084 K)

Files used for 3D models or 2D drawings of IC components

TIDCDL1.ZIP (386 K)

Design file that contains information on physical board layer of design PCB

TIDRRL1.PDF (993 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Analog temperature sensors

LM20±1.5°C Analog Output Temperature Sensor

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

TPS543C204-V to 14-V, 40-A synchronous SWIFT™ buck converter with adaptive internal compensation

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

TL431Adjustable precision shunt regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Design guide 180-W, Dual-Channel, Step-Down Converter Ref Design w/ 97% Efficiency Jun. 28, 2017
Application note Designing With the Improved TL431LI (Rev. A) Jun. 28, 2019
Technical article Lightning-fast internally-compensated ACM topology – what can it do for you? May 18, 2017

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​

Videos