The NCP1399 is a high performance current mode controller for half

bridge resonant converters. This controller implements 600 V gate

drivers, 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, the NCP1399 features a dedicated output to drive the PFC

controller. This feature together with dedicated skip mode technique

further improves light load efficiency of the whole application. The

NCP1399 provides a suite of protection features allowing safe operation

in any application. This includes: overload protection, over?current

protection to prevent hard switching cycles, brown?out detection, open

optocoupler detection, automatic dead?time adjust, overvoltage (OVP)

and overtemperature (OTP) protections.

特性 Features

? High?Frequency Operation from 20 kHz up to 750 kHz

? Current Mode Control Scheme

? Automatic Dead?time with Maximum Dead?time Clamp

? Dedicated Startup Sequence for Fast Resonant Tank Stabilization

? Skip Mode Operation for Improved Light Load Efficiency

? Off?mode Operation for Extremely Low No?load Consumption

? Latched or Auto?Recovery Overload Protection

? Latched or Auto?Recovery Output Short Circuit Protection

? Latched Input for Severe Fault Conditions, e.g. OVP or OTP

? Out of Resonance Switching Protection

? Open Feedback Loop Protection

? Precise Brown?Out Protection

? PFC Stage Operation Control According to Load Conditions

? Startup Current Source with Extremely Low Leakage Current

? Dynamic Self?Supply (DSS) Operation in Off?mode or Fault Modes

? Pin to Adjacent Pin / Open Pin Fail Safe

? These are Pb?Free Devices

Typical Applications

? Adapters and Offline Battery Chargers

? Flat Panel Display Power Converters

? Computing Power Supplies

? Industrial and Medical Power Sources