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

(ACTIVE) TIDA-01444

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Key Document

Description

The TIDA-01444 reference design for server PSU, PC PSU, and other step-down converter applications 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 TI Design has complete protection and temperature sense functions.

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

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Design Files

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Bill of Materials (BOM)

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM20  ±1.5°C Analog Output Temperature Sensor   Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
TL431B  0.5% Accuracy Adjustable Precision Shunt Regulator  Voltage references  Sample & Buy Not Available
TPS543C20  4-14Vin 40A Stackable Synchronous Step-down SWIFT™ Converter w/ Adaptive Internal Compensation  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM20 Download -
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TL431B Download Download
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TPS543C20 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 2565 28 Jun 2017 94
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 386 28 Jun 2017 4
ZIP 1084 28 Jun 2017 25
PDF 993 28 Jun 2017 18
PDF 197 28 Jun 2017 160
PDF 210 28 Jun 2017 156
PDF 352 28 Jun 2017 215

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