Small, efficient power supply reference design for M.2 form factor SSD


Design files


This small and efficient power supply reference design is for M.2 form factor client solid state drives (SSD). This design uses three DC/DC converters and a single linear converter. Furthermore, one of the outputs offers the flexibility to change the output voltage through I²C communication. 

  • 3.3-V input voltage
  • 40.8-mm² space area
  • High efficiency
  • Automatic power save mode for light load efficiency
  • Adjustable output voltage using I2C and resistive feedback
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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.

TIDUEX2.PDF (1204 K)

Reference design overview and verified performance test data

TIDM655.PDF (597 K)

Detailed schematic diagram for design layout and components

TIDM656.PDF (92 K)

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

TIDM657.PDF (136 K)

Detailed overview of design layout for component placement


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

TIDM658.PDF (629 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS620882.4-V to 5.5-V input, tiny 6-pin 3-A step-down converter in 1.2-mm x 0.8-mm WCSP

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS628644-A synchronous step-down converter with I2C interface in 1.05-mm x 1.78-mm WCSP package

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TLV733P300-mA, capacitor-free, low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF | HTML

Start development


GUI for evaluation module (EVM)

TPS62866EVM GUI for Linux (Rev. B) — SLUC678B.ZIP (22329 K)

GUI for evaluation module (EVM)

TPS62866EVM GUI for MacOS (Rev. B) — SLUC677B.ZIP (27498 K)

GUI for evaluation module (EVM)

TPS62866EVM GUI for Windows (Rev. B) — SLUC676B.ZIP (26590 K)

Technical documentation

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* Design guide Small, Efficient Power Supply Reference Design for M.2 Form Factor SSD PDF | HTML Apr. 29, 2022

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