10A Step-Down Converter for Server Add-On Card ASIC Core Power Reference Design


Design files


A 9V-12.6V input, 12W, 90% efficient step-down converter for Server add-on card ASIC core voltage regulation using the TPS53219 PWM Controller and CSD86339Q3D 3x3 Power Block in 264mm2 of total power supply area.

  • 90% Efficiency
  • 264mm2 total power supply area (including PCB area for routing)
  • 2% voltage regulation tolerance
  • <42mV overshoot/undershoot in response to 5A load transient (12VIN)
  • 29 total components for the power supply (including the ICs)
  • Smooth monotonic start up with built-in output discharge (soft stop)

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.

TIDU331.PDF (886 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDR592.PDF (55 K)

Detailed schematic diagram for design layout and components

TIDR593.PDF (30 K)

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

TIDC413.ZIP (293 K)

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


Includes TI products in the design and potential alternatives.

Buck controllers (external switch)

TPS532194.5V to 28V Input Synchronous Step Down Controller with EcoMode

Data sheet document-pdfAcrobat PDF
Power blocks

CSD86330Q3D25-V, N channel synchronous buck NexFET™ power MOSFET, SON 3 mm x 3 mm power block, 20 A

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

Technical documentation

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Type Title Date
Test report PMP5471 Test Results May 05, 2014

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