Half-bridge point-of-load converter reference design with GaN technology


Design files


This reference design modifies the inboard transformer turns ratio from 5:1 to 3:1 to reduce input the range. The board supports input voltages from 24 V to 32 V and output voltages between 0.5 V to 1.0 V with output currents up to 40 A. This topology efficiently supports the high step-down ratio while providing significant output current and controllability. The original EVM was designed to evaluate the LMG5200 GaN half-bridge power stage and the TPS53632G half-bridge point-of-load (PoL) controller. This board implements the converter as a single-stage hard-switched half-bridge with a current-doubler rectifier.  The board is a redesign of the LMG5200POLEVM-10 evaluation module.

  • Low-voltage, high-current capability supporting FPGA PoLs
  • High power density using GaN FETs
  • Integrated planar transformer
Output voltage options PMP22089.1
Vin (Min) (V) 24
Vin (Max) (V) 32
Vout (Nom) (V) .85
Iout (Max) (A) 40
Output Power (W) 34
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Half Bridge- Hard Switched
?? View video with transcript Video

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.

TIDT151.PDF (2737 K)

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

TIDM375.PDF (311 K)

Detailed schematic diagram for design layout and components

TIDM376.PDF (59 K)

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

TIDM377.PDF (198 K)

Detailed overview of design layout for component placement

TIDM379.ZIP (1606 K)

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


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

TIDM378.PDF (1982 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

PWM controllers

TPS53632GHalf-bridge, D-CAP+ controller for 48-V GaN DC/DC converter

Data sheet: PDF | HTML
Gallium nitride (GaN) ICs

LMG520080V GaN Half Bridge Power Stage

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

LP2992250-mA, 16-V, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

LP38693500-mA, 10-V, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Low-side drivers

UCC275124-A/8-A single-channel gate driver with 5-V UVLO and split outputs in SON package

Data sheet: PDF | HTML
N-channel MOSFETs

CSD16321Q525-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 2.6 mOhm

Data sheet: PDF | HTML
Real-time clocks (RTCs) & timers

LMC555World’s smallest 555 timer with low power, high accuracy and a Fmax of 3MHz

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Test report Half-Bridge Point-of-Load Converter Reference Design With GAN Technology Dec. 17, 2019

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​