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PMP23126

3-kW phase-shifted full bridge with active clamp reference design with > 270-W/in3 power density

PMP23126

Design files

Overview

This reference design is a GaN-based 3-kW phase-shifted full bridge (PSFB) targeting maximum power density. The design has an active clamp to minimize voltage stress on the secondary synchronous rectifier MOSFETs enabling use of lower voltage-rating MOSFETs with better figure-of-merit (FoM). PMP23126 uses our 30mΩ GaN on the primary side and silicon MOSFETs on the secondary side. The LMG3522 top-side cooled GaN with integrated driver and protection enables higher efficiency by maintaining ZVS over a wider range of operation compared to Si MOSFET. The PSFB operates at 100 kHz and achieves a peak efficiency of 97.74%.

Features
  • > 270-W/in3 power density in an x-y dimension of less than 68 mm x 102 mm and max height of 32 mm
  • Peak efficiency of 97.74%
  • Active clamp for minimizing voltage stress on SR MOSFETs enabling use of better FoM devices
  • GaN optimized with driver integration
Output voltage options PMP23126.1
Vin (Min) (V) 350
Vin (Max) (V) 410
Vout (Nom) (V) 12
Iout (Max) (A) 250
Output Power (W) 3000
Isolated/Non-Isolated Isolated
Input Type DC
Topology Full Bridge- Phase Shifted

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.

PDF | HTML
TIDT275.PDF (844 K)

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

TIDMAE3.ZIP (860 K)

Detailed schematic diagram for design layout and components

TIDMAE4.ZIP (291 K)

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

TIDMAE6.ZIP (10614 K)

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

TIDCG67.ZIP (7340 K)

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

TIDMAE5.ZIP (7465 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

C2000 real-time microcontrollers

TMS320F280045C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 256 KB flash, PGAs, SDFM

Data sheet: PDF
C2000 real-time microcontrollers

TMS320F280049C2000™ 32-bit MCU with 100-MHz, FPU, TMU, 256-kb Flash, CLA, PGAs, SDFM

Data sheet: PDF
C2000 real-time microcontrollers

TMS320F280049CC2000™ 32-bit MCU with 100-MHz, FPU, TMU, 256-kb Flash, CLA, InstaSPIN-FOC, CLB, PGAs, SDFM

Data sheet: PDF
Current sense amplifiers analog output

INA293-4-V to 110-V, 1.3-MHz, ultra-precise current sense amplifier

Data sheet: PDF | HTML
Digital isolators

ISO7721Robust EMC, dual-channel, 1/1, reinforced digital isolator

Data sheet: PDF | HTML
Gallium nitride (GaN) ICs

LMG3522R030-Q1Automotive 650-V 30-mΩ GaN FET with integrated driver, protection and temperature reporting

Data sheet: PDF | HTML
Ideal diode/ORing controllers

TPS24110.8-V to 16.5-V 1.2A IQ 293-uA Igate source N+1 and OR-ing power rail controller

Data sheet: PDF | HTML
Isolated gate drivers

UCC53503kVrms, 5A/5A single-channel isolated gate driver with miller clamp or split out & 8V or 12V UVLO

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

TLV713P-Q1Automotive 150-mA, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Low-side drivers

UCC2761410-A/10-A single-channel gate driver with 4-V UVLO, 30-V VDD and low prop delay

Data sheet: PDF | HTML
N-channel MOSFETs

CSD16570Q5B25-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 0.82 mOhm

Data sheet: PDF | HTML
Transformer drivers

SN6505BLow-noise, 1-A, 420-kHz transformer driver with soft start for isolated power supplies

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report 3-kW Phase-Shifted Full Brdg. W/ Active Clamp Ref Des W/ > 270 W/in3 Pwr Density PDF | HTML Apr. 20, 2022

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