Small form factor 12-Vin, 1-Vout 40-A dual-phase synchronous buck reference design


Design files


This reference design is a dual-phase synchronous buck solution using TPS53622 controller with two CSD95490Q5MC power-stage ICs. It takes a 12-V input and converts it to 1-V out at 40 A; 20 A per phase.

  • Small form-factor
  • Dual phase
  • 89% peak efficiency
Output voltage options PMP21872.1
Vin (Min) (V) 10.8
Vin (Max) (V) 13.2
Vout (Nom) (V) 1
Iout (Max) (A) 40
Output Power (W) 40
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Multiphase
Enterprise systems
?? View video with transcript Video

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.

TIDT134.PDF (4072 K)

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

TIDM176.PDF (144 K)

Detailed schematic diagram for design layout and components

TIDM177.PDF (56 K)

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

TIDM178.PDF (138 K)

Detailed overview of design layout for component placement

TIDM180.ZIP (663 K)

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

TIDCFM2.ZIP (1616 K)

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

TIDM179.PDF (544 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)

TPS53622VR13 Dual-Channel D-CAP+™ 2+0/1+1 Step-Down Controller With NVM and PMBus

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

LP2951100-mA, 30-V, low-dropout voltage regulator with power good & enable

Data sheet: PDF | HTML
Si power stages

CSD95490Q5MC75A Synchronous Buck NexFET™ Smart Power Stage with DualCool Package

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Test report 12-Vin, 1-Vout, 40-A Dual Phase Synchronous Buck Reference Design Sep. 16, 2019

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​