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
    Powerelectronics 1348 Pett082708 Lead Photo
    1. Technologies
    2. Power
    3. Power Supply
    4. Discrete Power Semis

    Optocouplers Are High in Isolation, Low in Profile

    Aug. 27, 2008
    A series of phototransistor optocouplers from Everlight Electronics provide a combination of performance benefits and low-profile packaging that can be exploited in a variety of isolated power supply designs

    A series of phototransistor optocouplers from Everlight Electronics provide a combination of performance benefits and low-profile packaging that can be exploited in a variety of isolated power supply designs. The EL3H7-G optocouplers, which come in 2.0-mm high 4-pin SSOPs, feature 3750-Vrms isolation, 5-mm minimum creepage distance, -55°C to +110°C operating temperature range, 80-V breakdown rating, and multiple current-transfer-ratio (CTR) bins.

    The dc-input, phototransistor output optocouplers target applications such as dc-dc converters, battery chargers, general-purpose switching circuits and programmable controllers. According to the company, the EL3H7-G series devices either match or outperform other similarly packaged optouplers on a number of specifications (see the figure).

    For example, the 3750-Vrms isolation voltage rating is said to match industry-best performance for a 4-pin SSOP device. According to Everlight, only one other vendor offers an optocoupler with this rating in the 4-pin SSOP and that device is 0.1 mm taller (2.1 mm). Meanwhile other competing devices in this package are said to carry isolation ratings of 3000 Vrms or less. In addition to the small package size, the EL3H7-G optocouplers offer a fine lead pitch of 1.27 mm.

    Similarly, with regard to operating temperature range, Everlight claims that only one other competitor matches its upper tempertaure limit of 110°C, while most of the competiting devices specify a maximum operating temperature of 100°C.

    “Because these 4-pin SSOP optocouplers are capable of reaching higher operating temperatures, they enable dc-dc converters to achieve higher efficiencies and power ratings, as well as improved thermal performance," says Krish Ramdass, Optoelectronics Marketing, Everlight Americas.

    Pricing for the EL3H7-G optocouplers ranges from $0.10 to $0.20 per unit in production quantities. Available now, these devices are halogen-free, lead (Pb) free and RoHS-compliant to meet green environmental initiatives.

    Powerelectronics Com Power Semiconductors News Pett082708 Lead Photo

    Continue Reading

    Sponsored Recommendations

    Designing automotive-grade camera-based mirror systems

    Dec. 2, 2023

    Design security cameras and other low-power smart cameras with AI vision processors

    Dec. 2, 2023

    Automotive 1 TOPS vision SoC with RGB-IR ISP for 1-2 cameras, driver monitoring, dashcams

    Dec. 2, 2023

    AM62A starter kit for edge AI, vision, analytics and general purpose processors

    Dec. 2, 2023

    Comments

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

    I already have an account

    New

    Who is Using RISC-V?

    Tiny Sensors Simplify Full Body Motion Capture

    Design Resources Boost Embedded Development Projects

    Most Read

    Observability Framework Exposes DDS

    Virtual Circuits Beat Out Quantum Computer

    Master Cell Balancing to Enhance EV Performance


    Sponsored

    How to design high-voltage systems with higher reliability while reducing solution size and cost

    Isolated DC/DC converters & modules

    TPSI3052

    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