12Vinput 1.2V/10A High Power Density, PMBus Step-Down DC-DC Converter Reference Design


Design files


The PMP10961 is a high power density, 10A buck converter with PMBus interface. The layout is optimized for small form factor utilizing both sides of board and fits in a 0.6"x0.78" area. It enables 86.5% efficiency at 10Vin, 1.2V/10Aout, 400kHz. Due to DCAP3 control mode, it also provides fast load transient response within +/-1.5%, minimizing output capacitors .  PMBus interface enables output voltage adjustment, soft-start, power-on delay, switching frequency, UVLO and fault reporting.

  • Small form factor 1.2V/10A PoL in 0.6" by 0.78" size (15.2mm x19.7mm)
  • High efficiency 86.5% at 1.2V/10A, 400kHz, 10Vin
  • 51C FET temperature under 10Vin, 1.2V/10A, natural convection and room temperature
  • DCAP3-enabled fast transient response within +/-1.5%
  • PMBus controlled output voltage, soft-start, power-on delay, switching frequency, UVLO and fault report
  • PowerStack package for easy heatsinking to the internal PCB GND layers and excellent thermal performance
Output voltage options PMP10961.1
Vin (Min) (V) 7
Vin (Max) (V) 13.2
Vout (Nom) (V) 1.2
Iout (Max) (A) 10
Output Power (W) 12
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous
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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.

TIDUAN4.PDF (1613 K)

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

TIDRH24.PDF (112 K)

Detailed schematic diagram for design layout and components

TIDRH25.PDF (108 K)

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


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

TIDRH26.PDF (513 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS539151.5-V to 18-V, 12-A synchronous SWIFT™ buck converter with PMBus

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP10961 Test Results Sep. 18, 2015

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