TIDA-050089

48V–12V GaN-enabled 1.1kW two-phase buck converter, 1/4th brick power module reference design

TIDA-050089

Design files

Overview

This reference design is a 1.1kW, high-density, 48V to 12V closed-loop bus converter based on a two-phase buck for enterprise computing. The design achieves approximately 98% peak efficiency. The design uses the LMG3100R017, one of TI's high-performance gallium nitride (GaN) power stage devices. The control circuitry uses the UCD3138A, a high-performance microcontroller in a 40-pin quad flat no-lead (QFN) package.

Features
  • High power density with a high peak (about 98%+) and full load efficiency
  • Transformer-less regulated topology
  • Low bill of materials (BOM) cost
  • Easy to implement in a chip-down design in quarter brick form factor (36.8mm × 58.4mm × 18mm)
  • 12V–48V boost configurable
  • PMBus® compatible
  • Scalable design for higher power (2kW+): TIDA-050095
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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.

PDF | HTML
TIDUFF3.PDF (777 KB)

Reference design overview and verified performance test data

SLURB60.PDF (356 KB)

Detailed overview of design layout for component placement

SLURB61.PDF (129 KB)

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

SLURB63.ZIP (3472 KB)

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

SLVC901.ZIP (977 KB)

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

SLURB62.PDF (2610 KB)

PCB layer plot file used for generating PCB design layout

SLVRBW5.PDF (491 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Power modules (integrated inductor)

TPSM365R63-V to 65-V input, 1-V to 13-V output, 0.6-A synchronous buck converter power module

Data sheet: PDF | HTML
AC/DC & DC/DC controllers (external FET)

UCD3138AUCD3138A Highly Integrated Digital Controller for Isolated Power

Data sheet: PDF | HTML
Gallium nitride (GaN) power stages

LMG3100R017100V 1.7mΩ GaN FET with integrated driver

Data sheet: PDF | HTML

Technical documentation

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* Design guide 48V–12V GaN-Enabled 1.1kW, Two-Phase Buck Converter, One-Fourth Brick Power Module Reference Design PDF | HTML Oct 15, 2025

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-050095 48V–12V GaN-enabled 2kW four-phase buck converter, 1/4th brick power module reference design

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