12-V/500-W resonant converter reference design with HV GaN FET PMP21842 (ACTIVE)

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Key Document

Description

This high-frequency resonant converter reference design regulates a 12-V output from a 380-V to 400-V input voltage range using a resonant tank with 500 kHz resonant frequency. A peak efficiency of 96.0% (bias supply included) is achieved with this design using our high-voltage GaN device along with UCD3138A and UCD7138 to optimize the dead time and synchronous rectifier (SR) conduction.

Features
  • 500 kHz resonant frequency
  • Nominal 390-V to 12-V/500-W conversion
  • 96.0% efficiency at 390-V input with bias supply included
  • Power stage X Y dimensions of 1.9" x 3"

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Design Files

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Parametrics
 PMP21842.1
(Output Voltage 1)
Vin (Min) (V)380
Vin (Max) (V)400
Vout (Nom) (V)12
Iout (Max) (A)42
Output Power (W)504
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyFull Bridge- Resonant

TI Devices (7)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18510Q5B  40V N-Channel NexFET™ Power MOSFET  MOSFETs  Sample & Buy Not Available
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  Gallium nitride (GaN)  Sample & Buy View Design Kits & Evaluation Modules
LP3985  Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
OPA376  Precision, Low Noise, Low Iq Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
UCD3138A  UCD3138A Highly Integrated Digital Controller for Isolated Power  Digital power  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 -
LP3985 Download -
Download -
OPA376 Download Download
Download Download
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UCD3138A Download
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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 3472 04 Feb 2019
Design files (6)
Title Type Size (KB) Date
ZIP 1731 04 Feb 2019
ZIP 584 04 Feb 2019
PDF 714 04 Feb 2019
PDF 119 04 Feb 2019
ZIP 153 04 Feb 2019
ZIP 254 04 Feb 2019
Related Tools & Software

Reference Designs  ( 1 )

Name Part Number Tool Type
24-V/500-W resonant converter reference design with HV GaN FET  PMP21309  TI Designs

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