UCC256403

Product Folder Order Now Technical Documents Tools & Software Support & Community UCC256402, UCC256403, UCC256404 SLUSD90C – JUNE 2019 – REVISED MARCH 2020 UCC25640x LLC Resonant Controller with Ultra-Low Audible Noise and Standby Power 1 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, output over voltage, input under voltage protection, three levels of over current protection Integrated high voltage startup function Active X-capacitor discharge function 2 Applications SMPS power supply for TV Lighting AC-DC adapter Power tools Medical power supply Multi-functional printer Enterprise and cinema projector PC power supply Gaming console power supply 3 Description 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 sy...