24-V/500-W resonant converter reference design with HV GaN FET


Design files


This reference design is a high-frequency resonant converter reference design. The output voltage is regulated to 24 V with input voltage ranges from 380 V to 400 V using a resonant tank with 500 kHz resonant frequency. A 97.9% peak efficiency is achieved with this design using TI’s high-voltage GaN device, LMG3410R070, along with UCD3138A and UCD7138 to optimize the deadtime and synchronous rectifier (SR) conduction.

  • 500kHz resonant frequency
  • 390V to 24V/500W conversion
  • 97.9% efficiency at 390V input
  • Power stage X Y dimension 1.9" x 3"
Output voltage options PMP21309.1
Vin (Min) (V) 380
Vin (Max) (V) 400
Vout (Nom) (V) 24
Iout (Max) (A) 21
Output Power (W) 504
Isolated/Non-Isolated Isolated
Input Type DC
Topology Full Bridge- Resonant
Personal electronics
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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.

TIDT033.PDF (2774 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

TIDRXJ8.ZIP (2231 K)

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

TIDCEZ7.ZIP (2711 K)

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

TIDRXJ7.ZIP (1174 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

UCD3138AUCD3138A Highly Integrated Digital Controller for Isolated Power

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

UCD7138Low-side Power MOSFET Driver With Body Diode conduction Sensing

Data sheet: PDF | HTML
Analog temperature sensors

LM20±1.5°C Analog Output Temperature Sensor

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

LMG3410R070600-V 70mΩ GaN with integrated driver and protection

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

LMG3411R050600-V 50mΩ GaN with integrated driver and cycle-by-cycle overcurrent protection

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

LMG3411R070600-V 70-mΩ GaN with integrated driver and cycle-by-cycle overcurrent protection

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

LP3985150-mA, low-dropout voltage regulator with bypass & enable

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA376Precision (0.025mV), low noise (7.5nV/rtHz), low quiescent current (760uA) op amp

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report 24-V/500-W Resonant Converter Reference Design With TI HV GaN FET Nov. 05, 2018

Related design resources

Hardware development

LMG3410-HB-EVM LMG3410R070 600-V 70-mΩ GaN half-bridge daughter card

Reference designs

PMP20306 200V to 400V Input (Nominal), Triple-Output Bias Supply with Input Voltage Sensing Reference Design

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