Electronic Design
  • Resources
  • Directory
  • Webinars
  • CAD Models
  • Video
  • Blogs
  • More Publications
  • Advertise
    • Search
  • Top Stories
  • Tech Topics
  • Analog
  • Power
  • Embedded
  • Test
  • AI / ML
  • Automotive
  • Data Sheets
  • Topics
    - TechXchange Topics --- Markets --AutomotiveAutomation-- Technologies --AnalogPowerTest & MeasurementEmbedded
    Resources
    Electronic Design ResourcesTop Stories of the WeekNew ProductsKit Close-UpElectronic Design LibrarySearch Data SheetsCompany DirectoryBlogsContribute
    Members
    ContentBenefitsSubscribeDigital editions
    Advertise
    https://www.facebook.com/ElectronicDesign
    https://www.linkedin.com/groups/4210549/
    https://twitter.com/ElectronicDesgn
    https://www.youtube.com/channel/UCXKEiQ9dob20rIqTA7ONfJg
    1. News
    2. Products

    Interleaved Boundary-Mode PFC Controller Delivers Over 96 Percent Efficiency

    March 10, 2009
    Fairchild Semiconductor brings power supply designers a boundary-conduction mode (BCM) interleaving power factor correction (PFC) controller that provides over 96 percent power conversion efficiency for AC-DC power supplies

    Fairchild Semiconductor brings power supply designers a boundary-conduction mode (BCM) interleaving power factor correction (PFC) controller that provides over 96 percent power conversion efficiency for AC-DC power supplies. Applications include power supplies for digital TVs, desktop and entry-level server computers, front-end telecom systems and industrial power systems rated from 100W to 1000W. Historically, the higher-efficiency and lower-cost BCM PFC converters are limited to about 300W of maximum power level. Interleaving extends the power range of BCM control while ripple current cancellation minimizes high peak currents. By interleaving and keeping two power stages precisely at 180 degrees out of phase timing under all operating conditions, the FAN9612 lowers conduction losses. These energy-conservation benefits are integral in helping customers meet the latest ENERGY STAR® and Climate Savers Computing Initiative requirements.

    By the interleaving of the power trains, the FAN9612 is also able to reduce the input filter size and reduce board space by as much as ten percent compared to alternate solutions. This smaller system footprint reduces the overall cost of the solution and simplifies design, without compromising on protection features.

    The FAN9612 incorporates the industry's most comprehensive set of features including: Automatic phase disable to operate with only one channel under light-load conditions, minimizing power losses.
    1. A low start-up and operating current.
    2. Valley switching technology, minimizing losses at MOSFET turn-on.
    3. Over-current and power-limit protection for each channel.
    4. Two-level output over-voltage protection (OVP).
    5. Input brownout protection and line OVP.
    6. Minimum restart timer frequency to avoid audible noise.
    7. Maximum switching frequency clamp.
    8. Programmable closed-loop soft-start, which minimizes output voltage overshoot at start-up.
    9. Input voltage feed-forward function that minimizes output voltage variation versus line voltage.

    Continue Reading

    This Week in PowerBites: Dueling Mini-MOSFETs, Power-Friendly Spice Tools

    Gate Drivers Engineered for New Era in Power Electronics

    Sponsored Recommendations

    Take Charge with Littelfuse Charging Solutions for Peak Performance in Material Handling EVs

    Nov. 28, 2023

    Nexperia Webinar: Application Specific MOSFETs and GaN Solutions for the Automotive Market

    Nov. 28, 2023

    TTI Transportation Resource Center

    Nov. 28, 2023

    Molex: What Happens When the Driver’s Seat is Empty?

    Nov. 28, 2023

    Comments

    To join the conversation, and become an exclusive member of Electronic Design, create an account today!

    I already have an account

    New

    Altech Corporation Products for Electronic Design

    Checking Out the NXP Hovergames NavQPlus

    TrustInSoft Helps Root Out Bugs to Deliver Reliable Code

    Most Read

    MEMS Mirrors: The Next Big Wave in MEMS Technology

    April 1st, 2023 @ Electronic Design

    From Design to Delivery: Creating Embedded System Solutions


    Sponsored

    Use Low-EMI Switching Regulators to Optimize High-Efficiency Power Designs

    PMP23069

    How processing in real-time drives high-performance power systems

    Electronic Design
    https://www.facebook.com/ElectronicDesign
    https://www.linkedin.com/groups/4210549/
    https://twitter.com/ElectronicDesgn
    https://www.youtube.com/channel/UCXKEiQ9dob20rIqTA7ONfJg
    • About Us
    • Contact Us
    • Advertise
    • Do Not Sell or Share
    • Privacy & Cookie Policy
    • Terms of Service
    © 2023 Endeavor Business Media, LLC. All rights reserved.
    Endeavor Business Media Logo