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.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| 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? | PDF | HTML | May 18, 2017 |
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