DESCRIPTION
The LTC®3722-1/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.

FEATURES
■ 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

APPLICATIONS
■ Telecommunications, Infrastructure Power Systems
■ Distributed Power Architectures
■ Server Power Supplies