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.


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

Product Lifecycle icon-recommended Production

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)

Tools & Simulations


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Product Recommendations

LTC3722 Companion Parts

Recommended Related Parts

Design Resources

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PCN-PDN Information

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Evaluation Boards

Pricing displayed is based on 1-piece.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.