High Efficiency and Power Density 1kW Resonant Converter Reference Design with High Voltage GaN FET

(ACTIVE) PMP20978

Description & Features

Technical Documents

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Key Document

Description

The PMP20978 reference design is a high efficiency, high power density and light weight resonant converter reference design. It converts a 390V input to a 48V/1kW output. The PMP20637 power stage has over 140W/in^3 power density. The whole board weight is less than 230g. With fixed 950kHz switching frequency in steady state, 97.6% peak efficiency is achieved. 

Features
  • 390V - 48V/1kW high frequency resonant converter
  • 950kHz resonant frequency with less than 210g weight
  • Utilizes TI's high voltage GaN FETs as input switches
  • Optimized LLC SR conduction with UCD7138/UCD3138A
  • Power stage dimension: 2" x 2.1" x 1.7"
  • Achieves peak 97.6% efficiency

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Schematic/Block Diagram

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Design Guide

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Bill of Materials (BOM)

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Parametrics
 PMP20978.1
(Output Voltage 1)
Vin (Min) (V)380
Vin (Max) (V)4000
Vout (Nom) (V)48
Iout (Max) (A)21
Output Power (W)1008
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyHalf Bridge- Resonant

TI Devices (6)

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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
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
SN74LVC2G08-Q1  Automotive Catalog Dual 2-Input Positive-AND Gate  Gate  Not Available 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
LP3985 Download Download
Download -
OPA376 Download Download
Download Download
Download Download
SN74LVC2G08-Q1 Download Download
UCD3138A Download
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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 4415 04 Dec 2017 10
Design files (36)
Title Abstract Type Size (KB) Date Views
ZIP 2134 04 Dec 2017 2
ZIP 2133 04 Dec 2017 2
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ZIP 1415 04 Dec 2017 1 1
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PDF 1020 04 Dec 2017 4
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PDF 128 04 Dec 2017 10
PDF 159 04 Dec 2017 8
Related Tools & Software

Reference Designs  ( 1 )

Design Kits & Evaluation Modules  ( 1 )

Name Part Number Tool Type
LMG3410R070 Daughter Card  LMG3410-HB-EVM  Evaluation Modules & Boards 

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