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24-V/500-W resonant converter reference design with HV GaN FET
PMP21309
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Key Document

Description

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.

Features
  • 500kHz resonant frequency
  • 390V to 24V/500W conversion
  • 97.9% efficiency at 390V input
  • Power stage X Y dimension 1.9" x 3"

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Parametrics
 PMP21309.1
(Output Voltage 1)
Vin (Min) (V)380
Vin (Max) (V)400
Vout (Nom) (V)24
Iout (Max) (A)21
Output Power (W)504
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyFull Bridge- Resonant

TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM20  ±1.5°C Analog Output Temperature Sensor  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
LMG3410R070  600-V 70mΩ GaN with integrated driver and protection  Power management  Sample & Buy View Design Kits & Evaluation Modules
LMG3411R050  600-V 50mΩ GaN with integrated driver and cycle-by-cycle overcurrent protection  Power management  Sample & Buy View Design Kits & Evaluation Modules
LMG3411R070  600-V 70-mΩ GaN with integrated driver and cycle-by-cycle overcurrent protection  Power management  Sample & Buy View Design Kits & Evaluation Modules
LP3985  150-mA, low-dropout voltage regulator with bypass & enable  Power management  Sample & Buy View Design Kits & Evaluation Modules
OPA376  Precision (0.025mV), low noise (7.5nV/rtHz), low quiescent current (760uA) op amp  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
UCD3138A  UCD3138A Highly Integrated Digital Controller for Isolated Power  Digital power ICs  Sample & Buy View Design Kits & Evaluation Modules
UCD7138  Low-side Power MOSFET Driver With Body Diode conduction Sensing  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM20 Download -
Download Download
LMG3410R070 Download Download
LMG3411R050 Download
LMG3411R070 Download Download
LP3985 Download Download
Download -
OPA376 Download Download
Download Download
Download Download
UCD3138A Download
Download
Download

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Technical documentation

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Datasheet (2)
Title Type Size (KB) Date
PDF 1553 06 Apr 2020
PDF 1610 16 Jan 2020
User guide (1)
Title Type Size (KB) Date
PDF 2704 05 Nov 2018
Design files (6)
Title Type Size (KB) Date
ZIP 2711 05 Nov 2018
ZIP 2231 05 Nov 2018
ZIP 1174 05 Nov 2018
ZIP 149 05 Nov 2018
ZIP 205 05 Nov 2018
ZIP 252 05 Nov 2018
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
200V to 400V Input (Nominal), Triple-Output Bias Supply with Input Voltage Sensing Reference Design  PMP20306  Reference design 

Hardware development (1)

Name Part Number Tool Type
LMG3410R070 600-V 70-mΩ GaN half-bridge daughter card  LMG3410-HB-EVM  Daughter card 

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