High Density 30W DC-DC PMBus Buck Converter with Inductor Mounted Over the Converter to Save Space


Design files


This design has inductor over converter to achieve 30 A conversion in 1" by 0.6" (2.5 cm by 1.5 cm) footprint. The DCAP control of the controller provides a high speed control loop which is needed for applications with large rapidly varying loads, such as microprocessors. A high speed dynamic load is also included to verify this capability.


  • Fully synchronous controller for lowest losses
  • DCAP2 control for excellent step load response
  • Compact design with inductor over controller
  • Thermal performance well documented both with & without fan
  • On board high speed dynamic test load to verify dynamic performance
  • Schematic, BOM, layout and Test Report focusing on thermal performance & load dynamics
Output voltage options PMP10364.1
Vin (Min) (V) 10.8
Vin (Max) (V) 13.2
Vout (Nom) (V) 1
Iout (Max) (A) 30
Output Power (W) 30
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Integrated Switch^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.

TIDU666.PDF (481 K)

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


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDC786.ZIP (283 K)

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

TIDRBZ9.PDF (1546 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS544C204.5-V to 18-V, 30-A synchronous SWIFT™ buck converter with PMBus programmability and monitoring

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP10364 Test Results Dec. 01, 2014

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