NCP13994AADR2G

NCP13994 is a high performance current mode resonant controller with integrated high-voltage driver for half bridge resonant converters. This controller implements 700V gate driver, simplifying layout and reducing external component count. The built−in Brown−Out input function eases implementation of the controller in all applications. In applications where a PFC front stage is needed, this features a dedicated output to drive the PFC controller. This feature together with quiet skip mode technique further improves light load efficiency of the whole application. This includes overload protection, over−current protection to prevent hard switching cycles, brown−out detection, line brown−out, line OVP, X2 cap discharge, open optocoupler detection, automatic dead−time adjust, over−voltage and over−temperature protections. Typical applications are adapters and offline battery chargers, flat panel display power converters, computing power supplies, industrial and medical power sources.

• Provides a suite of protection features allowing safe operation in any application
• Line brown−out and OVP protections, X2 cap discharge function
• Clamped output drivers, current mode control scheme
• Automatic dead−time with maximum dead−time clamp
• Enhanced start-up sequence for fast resonant tank stabilization
• Light load operation mode for improved efficiency, pin to adjacent pin/open pin fail safe
• Quiet skip operation mode for minimize transformer acoustic noise
• Off mode operation for extremely low no−load consumption
• Latched or auto−recovery output short circuit protection with current reduction
• PFC stage operation control according to load conditions