UCC24610

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Secondary side synchronous rectifier controller

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Product details

Parameters

Frequency (Max) (kHz) 600 UVLO thresholds on/off (V) 4.4/4.2 Features SYNC pin for CCM Operating temperature range (C) -40 to 125 open-in-new Find other Synchronous rectifier (SR) controllers

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 VSON (DRB) 8 9 mm² 3 x 3 open-in-new Find other Synchronous rectifier (SR) controllers

Features

  • Secondary-Side Controller Optimized for 5-V Systems
  • Up to 600-kHz Operating Frequency
  • VDS MOSFET-Sensing
  • 1.6-Ω Sink, 2.0-Ω Source Gate-Drive Impedances
  • Micro-Power Sleep Current for 90+ Designs
  • Automatic Light-Load Management
  • Synchronous Wake-Up From Sleep and Light-Load Modes
  • Protection Features on Programming Inputs
  • SYNC Input for CCM Operation
  • 20-ns Typical Turnoff Propagation Delay
  • Improved Efficiency and Design Flexibility Over Traditional Diode Solution
  • May Be Biased Directly From 5-V Output
  • Minimal Component Count
  • APPLICATIONS
    • AC-to-DC 5-V Adapters
    • 5-V Bias Supplies
    • Low Voltage Rectification Circuits
    • Flyback and LLC Converters
  • open-in-new Find other Synchronous rectifier (SR) controllers

    Description

    This GREEN Rectifier controller is a high-performance controller and driver for standard and logic-level N-channel MOSFET power devices used for low-voltage secondary-side synchronous rectification.

    The combination of controller and MOSFET emulates a near-ideal diode rectifier. This solution not only directly reduces power dissipation of the rectifier but also indirectly reduces primary-side losses as well, due to compounding of efficiency gains.

    Using drain-to-source voltage sensing, the UCC24610 is ideal for Flyback and LLC-resonant power supplies but can also be used with other power architectures. The UCC24610 is optimized for output voltages from 4.5 V to 5.5 V, and is suitable for use with lower and higher output voltages as well.

    The UCC24610 offers a programmable false-triggering filter, a programmable timer to automatically switch to light-load mode at light load, and a SYNC input for optional use in continuous conduction mode (CCM) systems. Protection features on TON and EN/TOFF pins prevent run-away on-time due to open-circuit or short-circuit fault conditions.

    This device is available in an 8-pin SOIC package and an 8-pin, 3.0-mm × 3.0-mm SON package with an exposed thermal pad.

    open-in-new Find other Synchronous rectifier (SR) controllers
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    Technical documentation

    = Top documentation for this product selected by TI
    No results found. Please clear your search and try again. View all 9
    Type Title Date
    * Datasheet UCC24610 GREEN Rectifier™ Controller Device datasheet (Rev. C) Aug. 12, 2015
    Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
    Application notes UCC24610 and UCC24612 SR Range Extension Guide Dec. 18, 2017
    Technical articles USB Wall Chargers: Conveniences and Challenges Oct. 06, 2015
    User guides Using the UCC28730EVM-552 10-W Adaptor Module With PSR and Wake-Up Monitor Feb. 06, 2015
    Application notes A High Efficiency Synchronous Rectifier Flyback for High Density AC/DC Adapter Jun. 03, 2011
    User guides A 90-W High-Efficiency, LLC Series-Resonant Converter Nov. 03, 2010
    User guides Using the UCC24610EVM-693 Sep. 03, 2010
    User guides Using the UCC24610EVM-563 Jul. 01, 2010

    Design & development

    For additional terms or required resources, click any title below to view the detail page where available.

    Hardware development

    EVALUATION BOARDS Download
    document-generic User guide
    99
    Description
    The UCC24610EVM-563 is a 25W, 5V off-line DCM Flyback converter with secondary side synchronous rectification controlled by the UCC24610. The primary side control is provided by the UCC28610 Green-Mode Flyback Controller.
    Features
    • Self synchronizing secondary side controller
    • Maximum 1MHz operating frequency
    • VDS MOSFET sensing
    • 3A sink, 2A source gate driving capability
    • Micro-power sleep current for 90+ designs
    • False triggering filter
    • 20ns turn off propagation delay
    • Sync input for CCM operation
    DAUGHTER CARDS Download
    document-generic User guide
    10
    Description
    The UCC24610EVM-693 is a diode replacement demonstration card that is used as a substitute for the Schottky diode in an existing customer system. This daughter card consists of the UCC24610 controller, a FET suitable for 5V, 10W output converters, and support components. The UCC24610EVM-693 can be (...)
    Features
    • Self synchronizing secondary side controller
    • Maximum 1MHz operating frequency
    • VDS MOSFET sensing
    • 3A sink, 2A source gate driving capability
    • Micro-power sleep current for 90+ designs
    • False triggering filter
    • 20ns turn off propagation delay
    • Sync input for CCM operation

    Design tools & simulation

    CALCULATION TOOLS Download
    SLUC348.ZIP (683 KB)

    Reference designs

    Many TI reference designs include the UCC24610 Use our reference design selection tool to review and identify designs that best match your application and parameters.

    CAD/CAE symbols

    Package Pins Download
    SOIC (D) 8 View options
    SON (DRB) 8 View options

    Ordering & quality

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