Variable-frequency, ZVS, 5-kW, GaN-based, two-phase totem-pole PFC reference design


Design files


This reference design is a high-density and high-efficiency 5-kW totem-pole power factor correction (PFC) design. The design uses a two-phase totem-pole PFC operating with variable frequency and zero voltage switching (ZVS). The control uses a new topology and improved triangular current mode (iTCM) to achieve both small size and high efficiency. The design uses a high performance processing core inside a TMS320F280049C microcontroller to maintain efficiency over a wide operating range. The PFC operates with variable frequency between 100 kHz and 800 kHz. A peak system efficiency of 99% was achieved with an open-frame power density of 120 W/in3.

  • 99% efficient
  • 120 W/in3 power density
  • 5-kW and 20-ms hold up
  • 180 W/in3 power density without hold up
  • Phase shedding
Output voltage options PMP40988.1
Vin (Min) (V) 120
Vin (Max) (V) 277
Vout (Nom) (V) 400
Iout (Max) (A) 12.5
Output Power (W) 5000
Isolated/Non-Isolated Non-Isolated
Input Type AC
Topology Boost- PFC

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.

TIDT294.PDF (1016 K)

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


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDMAK5.ZIP (13037 K)

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

TIDCG79.ZIP (7654 K)

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

TIDMAK4.ZIP (3833 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AND gates

SN74AHC1G08Single 2-input, 2-V to 5.5-V AND gate

Data sheet: PDF | HTML
C2000 real-time microcontrollers

TMS320F280041C2000™ 32-bit MCU with 100-MHz, FPU, TMU, 128-kb flash, PGAs, SDFM

Data sheet: PDF
C2000 real-time microcontrollers

TMS320F280041CC2000™ 32-bit MCU with 100-MHz, FPU, TMU, 128-kb flash, InstaSPIN-FOC, CLB, PGAs, SDFM

Data sheet: PDF
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

LMV331Single General Purpose Low-Voltage Comparator

Data sheet: PDF | HTML
Digital isolators

ISO7741Robust EMC, quad-channel, 3/1, 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
Isolated gate drivers

UCC21225A2.5kVrms, 4A/6A dual-channel isolated gate driver with dual input, 5V UVLO & LGA package

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

TPS717150-mA, high-PSRR, low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Low-side drivers

UCC275174-A/4-A single-channel gate driver with 5-V UVLO and 13-ns prop delay in SOT-23 package

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

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

Data sheet: PDF | HTML
Shunt voltage references

TLV431A1% accuracy, low-voltage, adjustable precision shunt regulator

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 Variable Frequency, ZVS, GaN-Based 5-kW Two-Phase Totem-Pole PFC Ref Design PDF | HTML Jun. 13, 2022

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