High Efficiency 3 kW 2-phase Interleave PFC Converter Reference Design

PublishTime：2021-06-24

This reference design supports inclusion of 2−phase interleave BCM PFC controller FAN9611, 2−phase interleave CCM PFC controller FAN9672, and ON Semiconductor Integrated Power Switch FSL336LRN; in a design of a Power−Factor−Correction (PFC)front−end up to 3 kW. This document should be used in conjunction with the FAN9611, FAN9672 and FSL336LR datasheets as well as ON Semiconductor's application notes and technical support team.
■General Description
●This reference design is made for a high efficiency, high power PFCup to 3 kW. It can be used in applications such as inverter type air conditioner, welding machine, EV charger, UPS etc. To achieve higher efficiency and power density, we adopted a two−channel interleave topology. To make the solution more flexible, we provided two control methods: Continuous Conduction Mode (CCM) and Boundary Conduction Mode (BCM) for options. Selecting the control mode iseasily done by changing the two different daughter boards. Eachcontrol mode has its advantages and disadvantages, which are explained in the following description and test results. To adopt theIGBT as the switching device, we placed a frequency up limit circuiton the BCM control board. It can be disabled while using the MOSFET as the switching device. A buck mode auxiliary power wasapplied since no insulation is required on the PFC stage, and because the Buck converter is simple and cheaper than the flyback converter.
■Key Features for System
●Two phase/channel interleaved boost topology to achieve high efficiency and low current ripple.
●Inductors on board reduces system size.
●Auxiliary power built in. Plug and Play evaluation.
●Temperature monitoring heat sink fan control. Decreased standby power and increased the life time.
●Output voltage is adjustable by potentiometer.
●BCM/CCM control optional by selecting different daughter board.
●Optional switching frequency limitation on BCM allowing IGBT as the switching device

Brand of Product：	ON Semiconductor
Part#：	FAN9611 、 FAN9672 、 FSL336LRN 、 FSL336LR 、 FAN9672Q 、 FAN9611MX 、 74VHC123AM 、 74VHC123A 、 FCH072N60 、 FGA3060ADF 、 LM431SACM32X More Part#
Product Category：	High Efficiency 3 kW 2-phase Interleave PFC Converter More
Application：	[ PFC Front−end with Auxiliary Power ][ inverter type airconditioner ][ welding machine ][ EV charger ][ UPS ] More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	LQFP
Language：	English Chinese Chinese and English Japanese
Date of Creation：	March, 2021
Version Number：	Rev.0
Data Encoding：	TND6346/D
Data Size：	1.8 MB

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