UCC256402 - Texas Instruments

UCC256402 LLC Resonant Controller

The UCC25640x is a fully featured LLC controller with integrated high-voltage gate driver. It has been designed to pair with a PFC controller to provide a complete power system using a minimum of external components. The resulting power system is designed to meet the most stringent requirements for standby power without the need for a separate standby power .

Features

•1 Optimized low power mode and burst mode algorithm
  – Burst mode with Soft-ON and Soft-OFF periods
  – Minimized audible noise at no load and standby
  – User option to disable burst mode
  – Opto-coupler low power operation
  – Efficiency performance exceeds DoE Level VI and EU CoC Tier-2 External Power Supply Standards
• Hybrid hysteretic control (HHC)
  – Best-in-class transient response
  – Fast exit from burst mode
• Robust adaptive dead-time control
• Integrated high-voltage gate driver with 0.6 A source and 1.2 A sink capability
• Robust capacitive region (ZCS) avoidance scheme
• Over temperature,.