The ISL675x family of controllers consists of high-performance, low-pin-count alternative zero voltage switching (ZVS) full bridge pulse width modulating (PWM) controllers. These parts achieve ZVS operation by driving the upper bridge FETs at a fixed 50% duty cycle while the lower bridge FETS are trailing-edge modulated with adjustable resonant switching delays.

Family Values

  • Unique PWM ZVS control algorithm
  • Easy for true peak mode control
  • Easy for diode emulation and light load burst mode operation
  • Easy For SR control
  • Unique output current sense feature
  • Simple implementation for brick wall constant current limit
  • Simple implementation for current sharing control

Applications

  • ZVS full bridge converters
  • Telecom and datacom power
  • Wireless basestation power
  • File server power
  • Industrial power systems

Power & Power Management

Product Selection Table

    Processing table
    Part Number
    Topology Characteristic
    Control Mode
    UVLO Rising (V)
    UVLO Falling (V)
    VBIAS (Max) (V)
    PWMs (#)
    FET Driver Output Current (Max) (A)
    Duty Cycle (%)
    Switching Frequency (KHz)
    Temp. Range
    Lead Count (#)
    Pkg. Type
    Simulation Model Available
    ISL6752
    ZVS Full-Bridge Current-Mode PWM with Adjustable Synchronous Rectifier Control    		 Full-Bridge ZVS Peak Current Mode 8.75 7 20 6 0.01 99 2000 -40 to 105°C 16 QSOP iSim
    ISL6753
    ZVS Full-Bridge PWM Controller    		 Full-Bridge ZVS Peak Current, Voltage, or Average Current Mode 8.75 7 20 4 0.01 99 2000 -40 to 105°C 16 QSOP iSim
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    Documentation

    Title Type Date
    AN1387: White LED Driver Circuits for Off-Line Applications using Standard PWM Controllers
    PDF746 KB
    Application Note
    AN1262: Designing with the ISL6752, ISL6753 ZVS Full-Bridge Controllers
    PDF581 KB
    Application Note
    AN1246: Techniques To Improve ZVS Full-bridge Performance
    PDF725 KB
    Application Note
    AN1619: Designing with ISL6752DBEVAL1Z and ISL6754DBEVAL1Z Control Cards
    PDF1.49 MB
    Application Note
    AN1681: Grounding Techniques
    PDF509 KB
    Application Note
    AN1684: Nonideality of Ground
    PDF397 KB
    Application Note
    AN1245: iSim ISL6742 Virtual Evaluation Platform
    PDF1.05 MB
    Application Note
    AN1002: 200W, 470kHz, Telecom Power Supply Using ISL6551 Full-Bridge Controller and ISL6550 Supervisor and Monitor
    PDF4.30 MB
    Application Note
    AN9867: End of Life Derating: A Necessity or Overkill
    PDF338 KB
    Application Note
    Intersil Commercial Lab Services
    PDF364 KB
    Brochure

    Tools & Resources

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