Valley switching boost power factor correction (PFC) reference design
TIDM-1022
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Key Document

Description

This reference design illustrates a digital control method to significantly improve Boost Power Factor Correction (PFC) converter performance such as the efficiency and Total Harmonic Distortion (THD) under light load condition where efficiency and THD standards are difficult to meet. This is achieved using the integrated digital control feature of the Piccolo™ F280049 microcontroller (MCU). The design supports phase shedding, valley switching, valley skipping, and Zero Voltage Switching (ZVS) for different load and instantaneous input voltage conditions. The software available with this reference design accelerates time to market.

Features
  • Interleaved, 750 W, Two-Phase Boost PFC Stage.  Full Range Parameter: 95–260 Vrms, 47–63 Hz
  • 200-kHz Switching Frequency Under Normal Conditions (Load > 10%)
  • 140–330-kHz Variable Pulse Width Modulation (PWM) Switching Under Light Load (<10%)
  • Programmable Valley Switching and Valley Skipping
  • Low THD: 6% at 5% Load (Low Line); 7% at 5% Load (High Line)
  • High Efficiency > 92% at 5% Load

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Schematic/Block Diagram

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Design Guide

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TI Devices (13)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA365  2.2V, 50MHz, Low-Noise, Single-Supply Rail-to-Rail Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G3157  5-V, 2:1 (SPDT), 1-channel general-purpose analog switch  Switches & multiplexers  Sample & Buy View Design Kits & Evaluation Modules
TMS320F280040  C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 128 KB Flash, PGAs, SDFM  Microcontrollers (MCU)  Not Available View Design Kits & Evaluation Modules
TMS320F280040C  C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 128 KB Flash, InstaSPIN-FOC, CLB, PGAs, SDFM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TMS320F280041  C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 128 KB Flash, PGAs, SDFM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TMS320F280041C  C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 128 KB Flash, InstaSPIN-FOC, CLB, PGAs, SDFM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TMS320F280045  C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 256 KB Flash, PGAs, SDFM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TMS320F280048  C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 256 KB Flash, CLA, PGAs, SDFM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TMS320F280048C  C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 256 KB Flash, CLA, InstaSPIN-FOC, CLB, PGAs, SDFM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TMS320F280049  C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 256 KB Flash, CLA, PGAs, SDFM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TMS320F280049C  C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 256 KB Flash, CLA, InstaSPIN-FOC, CLB, PGAs, SDFM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TPS795  500-mA, low-dropout voltage regulator with enable  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC27524  5-A/5-A dual-channel gate driver with 5-V UVLO, enable, and 1-ns delay Matching  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA365 Download Download
Download Download
SN74LVC1G3157 Download Download
Download Download
Download Download
Download Download
Download Download
Download Download
Download -
Download -
TMS320F280040 Download Download
TMS320F280040C Download Download
TMS320F280041 Download Download
Download Download
Download Download
TMS320F280041C Download Download
Download Download
Download Download
TMS320F280045 Download Download
Download Download
Download Download
TMS320F280048 Download Download
TMS320F280048C Download Download
TMS320F280049 Download Download
Download Download
Download Download
TMS320F280049C Download Download
Download Download
Download Download
TPS795 Download
Download
UCC27524 Download Download
Download Download
Download -
Download Download

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Technical documentation

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Datasheet (1)
Title Type Size (KB) Date
PDF 4133 29 Apr 2020
Application notes (1)
Title Type Size (KB) Date
PDF 2211 09 Sep 2020
User guides (3)
Title Type Size (KB) Date
PDF 38132 29 Sep 2020
PDF 4726 01 Apr 2020
PDF 82 20 Mar 2020
Design files (2)
Title Type Size (KB) Date
PDF 32 13 Nov 2018
PDF 98 06 Mar 2014
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
Two-Phase Interleaved Power Factor Correction Converter Reference Design with Power Metering  TIDM-2PHILPFC  Reference design 

Hardware development (2)

Name Part Number Tool Type
F280049C controlCARD Evaluation Module  TMDSCNCD280049C  Daughter cards 
180 to 100 Pin DIMM Adapter  TMDSADAP180TO100  Interface adapters 

Software development (1)

Name Part Number Software Type
DigitalPower software development kit (SDK) for C2000™ MCUs  C2000WARE-DIGITALPOWER-SDK  Software development kits (SDK) 


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