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PMP23595

48VIN, 960W four-phase buck converter with integrated GaN reference design

Design files

PMP23595

Design files

Overview

This reference design uses four LMG708B0-Q1 synchronous buck controllers configured as four- phase, interleaved, synchronous buck converters. The converter generates a regulated 12V output from a nominal 48V input and can handle up to 80A max current at 20A per phase. The LMG708B0-Q1 provides integrated switching with Gallium Nitride (GaN) field-effect transistors (FETs).

Features
  • High-power-density design
  • Peak conversion efficiency of 97% to 98% in the 36V to 60V input voltage range
  • Four-phase integrated-switch regulators for small design size
  • LMG708B0-Q1 has dual-side cooling capability
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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.

download Test report — PMP23595
PDF | HTML
SLVT237.PDF (1313 KB)

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

download Assembly drawing — PMP23595
SLVMEP1A.PDF (419 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — PMP23595
SLVMEP3A.PDF (218 KB)

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

download CAD/CAE symbol — PMP23595
SLVMEP2A.ZIP (3965 KB)

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

download Gerber file — PMP23595
SLVC918.ZIP (1731 KB)

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

download PCB layout — PMP23595
SLVMEP0.PDF (2808 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — PMP23595
SLVMEO9A.PDF (484 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

DC/DC converters

LMG708B0 — 5V to 80V, 20A synchronous step-down converter with integrated GaN FETs for ultra-high efficiency

Data sheet: PDF | HTML

Start development

Software development

Calculation tool

LMG708B0-CALC — LMG708B0 GaN buck converter quickstart calculator

Supported products & hardware

Supported products & hardware

Products
DC/DC converters
LMG708B0 — 5V to 80V, 20A synchronous step-down converter with integrated GaN FETs for ultra-high efficiency
Hardware development
Reference design
PMP23595 — 48VIN, 960W four-phase buck converter with integrated GaN reference design
Evaluation board
LMG708B0-EVM12V — LMG708B0 12V, 20A, GaN buck converter evaluation module LMG708B0-EVM2PH — LMG708B0 12V, 40A, 400kHz, two-phase GaN buck converter evaluation module
Download options

LMG708B0-CALC — LMG708B0 GaN buck converter quickstart calculator

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Latest version
Version: A1
Release date: Apr 22, 2026
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LMG708B0_quickstart_calculator_revA.xlsm  — 3240 K

LMG708B0 GaN buck converter quickstart calculator

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Products
DC/DC converters
LMG708B0 — 5V to 80V, 20A synchronous step-down converter with integrated GaN FETs for ultra-high efficiency
Hardware development
Reference design
PMP23595 — 48VIN, 960W four-phase buck converter with integrated GaN reference design
Evaluation board
LMG708B0-EVM12V — LMG708B0 12V, 20A, GaN buck converter evaluation module LMG708B0-EVM2PH — LMG708B0 12V, 40A, 400kHz, two-phase GaN buck converter evaluation module

Release Information

Welcome to the quickstart design tool for the LMG708B0 80V GaN synchronous buck converter family. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator using this converter family. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.

Technical documentation

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* Test report 48VIN, 960W Four-Phase Buck Converter With Integrated GaN Reference Design PDF | HTML Dec 1, 2025

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