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  5. LTC3722

Data Sheet Rev. C
PDF
JP
User Guide
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Overview

Features and Benefits

  • Adaptive or Manual Delay Control for Zero Voltage Switching Operation
  • Adjustable Synchronous Rectification Timing for Highest Efficiency
  • Adjustable Maximum ZVS Delay
  • Adjustable System Undervoltage Lockout Hysteresis
  • Programmable Leading Edge Blanking
  • Very Low Start-Up and Quiescent Currents
  • Current Mode (LTC3722-1) or Voltage Mode (LTC3722-2) Operation
  • Programmable Slope Compensation
  • VCC UVLO and 25mA Shunt Regulator
  • 50mA Output Drivers
  • Soft-Start, Cycle-by-Cycle Current Limiting and Hiccup Mode Short-Circuit Protection
  • 5V, 15mA Low Dropout Regulator
  • 24-Pin Surface Mount GN Package

Product Details

The LTC3722-1/LTC3722-2 phase-shift PWM controllers provide all of the control and protection functions necessary to implement a high efficiency, zero voltage switched (ZVS), full bridge power converter. Adaptive ZVS circuitry delays the turn-on signals for each MOSFET independent of internal and external component tolerances. Manual delay set mode enables secondary side control operation or direct control of switch turn-on delays.

The LTC3722-1/LTC3722-2 feature adjustable synchronous rectifier timing for optimal efficiency. A UVLO program input provides accurate system turn-on and turn-off voltages. The LTC3722-1 features peak current mode control with programmable slope compensation and leading edge blanking, while the LTC3722-2 employs voltage mode control.

The LTC3722-1/LTC3722-2 feature extremely low operating and start-up currents. Both devices include a full range of protection features and are available in the 24-pin surface mount GN package.

Applications

  • Telecommunications, Infrastructure Power Systems
  • Distributed Power Architectures
  • Server Power Supplies

Product Categories

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

  • View All (4)
  • Data Sheet (1)
  • Reliability Data (1)
  • User Guide (1)
  • Technical Article (1)
    • Document Type

    Tools & Simulations

    LTspice

    LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

    To launch ready-to-run LTspice demonstration circuits for this part:

    Step 1: Download and install LTspice on your computer.

    Step 2: Click on the link in the section below to download a demonstration circuit.

    Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

    LTspice

    LTspice Simulations

    LTC4440-5/LTC3722-1 Demo Circuit - Synchronous Phase-Modulated Full-Bridge Converter (36-60V to 5V @ 20A)
    LTC4440/LTC3722-1 Demo Circuit - Synchronous Phase-Modulated Full-Bridge Converter (36-72V to 5V @ 20A)

    Models for the following parts are available in LTspice:

    LTC3722-1
    LTC3722-2

    Product Recommendations

    LTC3722 Companion Parts

    Recommended Related Parts

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC3722EGN-1#PBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    LTC3722EGN-1#TRPBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    LTC3722EGN-2#PBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    LTC3722EGN-2#TRPBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    LTC3722HGN-1#PBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    LTC3722HGN-1#TRPBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    LTC3722IGN-1#PBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    LTC3722IGN-1#TRPBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    LTC3722IGN-2#PBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    LTC3722IGN-2#TRPBF Material Declaration Reliability Data 24-Lead SSOP (Narrow 0.15 Inch)
    Wafer Fabrication Data R302 Reliability Data

    PCN-PDN Information

    Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

    Select Model for PCN Information
    • LTC3722EGN-1#PBF Production
    • LTC3722EGN-1#TRPBF Production
    • LTC3722EGN-2#PBF Production
    • LTC3722EGN-2#TRPBF Production
    • LTC3722HGN-1#PBF Production
    • LTC3722HGN-1#TRPBF Production
    • LTC3722IGN-1#PBF Production
    • LTC3722IGN-1#TRPBF Production
    • LTC3722IGN-2#PBF Production
    • LTC3722IGN-2#TRPBF Production

    Support & Discussions

    LTC3722 Discussions

    RE: LTC3722-1 : Question on adaptive ZVS
    RE: LTC3722
    All LTC3722 Discussions
    LTC3722 Contact ADI Technical Support »
    LTC3722 Ask your question »
    LTC3722 Contact ADI Technical Support » LTC3722 Ask your question »

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