PMP20978

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

PMP20978

Design files

Overview

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
Output voltage options PMP20978.1
Vin (Min) (V) 380
Vin (Max) (V) 4000
Vout (Nom) (V) 48
Iout (Max) (A) 21
Output Power (W) 1008
Isolated/Non-Isolated Isolated
Input Type DC
Topology Half Bridge- Resonant

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.

TIDUDX9.PDF (4484 K)

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

TIDRTZ1A.ZIP (535 K)

Detailed schematic diagram for design layout and components

TIDRTZ6A.ZIP (280 K)

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

TIDRU01A.ZIP (297 K)

Detailed overview of design layout for component placement

TIDRU07A.ZIP (8391 K)

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

TIDCE41A.ZIP (15182 K)

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

TIDRU04A.ZIP (1838 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AND gates

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Analog temperature sensors

LM20±1.5°C Analog Output Temperature Sensor

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Digital power isolated controllers

UCD3138AUCD3138A Highly Integrated Digital Controller for Isolated Power

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Linear & low-dropout (LDO) regulators

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

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Precision op amps (Vos<1mV)

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

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SR & load share controllers

UCD7138Low-side Power MOSFET Driver With Body Diode conduction Sensing

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Technical documentation

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Type Title Date
* Test report PMP20978 Test Results Dec. 04, 2017

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