Power solution for Alder Lake and Raptor Lake VCCIN_AUX rail in PC applications reference design


Design files


This power-supply reference design supports VCCIN_AUX rail in Intel® Alder Lake and Raptor Lake platform. Using TPS51215A controller combined with an operational amplifier could support the control functions including VID control, load line (LL) and current monitor (IMON). The position for test tool interposer is reserved in this reference design to help with evaluation.

  • Differential voltage feedback
  • Flexible output voltage from 0.5 V to 2.0 V and 0 V VOUT supported by 2-bit VID
  • Programmable soft-start time and output voltage transition time
  • Enhanced load transient with 2-mΩ load line (LL)
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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.

TIDUE18.PDF (1347 K)

Reference design overview and verified performance test data

TIDMB38.PDF (1375 K)

Detailed schematic diagram for design layout and components

TIDMB39.PDF (132 K)

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

TIDMB40.PDF (1225 K)

Detailed overview of design layout for component placement

TIDMB42.ZIP (2046 K)

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

TIDCGB8.ZIP (1173 K)

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

TIDMB41.PDF (6786 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

TPS51215A3-V to 28-V input, single phase D-CAP2 controller with 2-bit VID

Data sheet: PDF | HTML
General-purpose op amps

TLV9051Single, 5.5-V, 5-MHz, 15-V/μs slew rate, RRIO operational amplifier for cost-optimized applications

Data sheet: PDF | HTML

CSD87355Q5D30-V, N channel synchronous buck NexFET™ power MOSFET, SON 5 mm x 6 mm power block, 45 A

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Alder Lake and Raptor Lake VCCIN_AUX Rail in PC Applications Reference Design PDF | HTML Nov. 08, 2022

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