12V to 1V 30A Voltage Mode Synchronous Buck Converter with PMBus Control Reference Design


Design files


Fixed frequency voltage mode control is used for communications and computing applications where a predictable frequency and / or synchronization to an external clock is needed. With control and power in one IC and inductor on top of the IC with its raised leads, a very small size solution is achieved. PMP20023 focuses on ease of electrical testing and ability to make changes "on the fly" thru the PMBus interface. A high speed dynamic load rounds out the rich test interface.

  • Fixed frequency voltage mode control allows for user selection of switching frequency and synchronization to an external clock
  • Output voltage, current limit and fault thresholds / responses can be adjusted "on the fly" thru the PMBus interface
  • Focus of evaluation board is on compactness of design with inductor on top of converter
  • Rich test interface includes PMBus socket, Bode plot test points and high speed dynamic test load
  • Schematic, BOM, layout and Test Report focusing on control loop & load dynamics for both 600mVout and 1.0Vout
Output voltage options PMP20023.1
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- 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.

TIDUBP5.PDF (2334 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

TIDCC27.ZIP (577 K)

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

TIDRLC4.PDF (1659 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

TPS544C254.5-V to 18-V, 30-A synchronous SWIFT™ buck converter with PMBus and frequency sync

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP20023 Test Results Apr. 13, 2016

Related design resources

Reference designs

PMP10364 High Density 30W DC-DC PMBus Buck Converter with Inductor Mounted Over the Converter to Save Space PMP9008 1V @ 30A Integrated FET with PMBus Reference Design

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