3.6-kW single-phase totem-pole bridgeless PFC reference design with a > 180-W/in³ power density


Design files


This reference design is a GaN-based 3.6-kW single-phase continuous conduction mode (CCM) totem-pole power factor correction (PFC) converter targeting maximum power density. The power stage is followed by a small boost converter which helps to reduce the size of the bulk capacitor. The LMG3522 top-side cooled GaN with integrated driver and protection enables higher efficiency and reduces power supply size and complexity. The F28004x or F28002x C2000™ controller is used for all the advanced controls that includes fast relay control, baby boost operation during AC dropout event, reverse current flow protection and communication between the PFC and housekeeping controller. The PFC operates at a switching frequency of 65 kHz and achieves peak efficiency of 98.7%.

  • >180W/in³ power density in an x-y dimension of less than 68-mm x 121-mm space and maximum height of 32 mm
  • Peak efficiency of 98.7%
  • Semiconductor relay increases power density and reliability
  • GaN optimized with driver integration
Output voltage options PMP23069.1
Vin (Min) (V) 90
Vin (Max) (V) 265
Vout (Nom) (V) 380
Iout (Max) (A) 9.47
Output Power (W) 3598.6
Isolated/Non-Isolated Non-Isolated
Input Type AC
Topology PFC- Boost

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.

TIDT257.PDF (2590 K)

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

TIDMA28.ZIP (688 K)

Detailed schematic diagram for design layout and components

TIDMA29A.ZIP (254 K)

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

TIDMA30.ZIP (391 K)

Detailed overview of design layout for component placement

TIDMA32.ZIP (10720 K)

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

TIDCG44.ZIP (2727 K)

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

TIDMA31.ZIP (3002 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Analog switches & muxes

SN74LVC1G31575-V, 2:1 (SPDT), 1-channel general-purpose analog switch

Data sheet: PDF | HTML
C2000 real-time microcontrollers

TMS320F280025CC2000™ 32-bit MCU with 100-MHz, FPU, TMU, 128-kb flash, CLB

Data sheet: PDF | HTML
Digital isolators

ISO7710Robust EMC, single-channel, reinforced digital isolator

Data sheet: PDF | HTML
Digital isolators

ISO7731Robust EMC, triple-channel, 2/1, 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
Half-bridge drivers

UCC277121.8-A/2.8-A, 620V half bridge driver with interlock

Data sheet: PDF | HTML
Hall-effect current sensors

TMCS1100Precision isolated current sensor with external reference

Data sheet: PDF | HTML
High-speed op amps (GBW ≥ 50 MHz)

LMP7717Single Channel, 88 MHz, Precision, Low Noise, 1.8V CMOS Input, Decompensated Amplifier

Data sheet: PDF
Isolated gate drivers

UCC212203.0kVrms, 4A/6A dual-channel isolated gate driver with disable pin & 8V UVLO for MOSFETs & GaNFETs

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

TLV741P150-mA low-dropout (LDO) voltage regulator with active output discharge and enable

Data sheet: PDF | HTML
Low-side drivers

UCC275114-A/8-A single-channel gate driver with 5-V UVLO, split outputs, and 13-ns Prop delay

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

OPA2376Dual, precision, low-noise, low quiescent current operational amplifier

Data sheet: PDF | HTML
Series voltage references

REF20258-ppm/°C drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF20333.3-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML

TMP611%, 10-kΩ linear thermistor in 0402, 0603/0805 and through hole packages

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 3.6-kW Single-Phase Totem-Pole Bridgeless PFC Ref. Des.w/ > 180-W/in3 Power Dens PDF | HTML Feb. 25, 2022

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