The NCP13992 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 builtïin BrownïOut input function eases implementation

of the controller in all applications. In applications where a PFC front

stage is needed, the NCP13992 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. The

NCP13992 provides a suite of protection features allowing safe

operation in any application. This includes: overload protection,

overïcurrent protection to prevent hard switching cycles, brownïout

detection, open optocoupler detection, automatic deadïtime adjust,

overïvoltage (OVP) and overïtemperature (OTP) protections.

Features

• HighïFrequency Operation from 20 kHz up to 750 kHz

• Current Mode Control Scheme

• Automatic Deadïtime with Maximum Deadïtime Clamp

• Dedicated Startup Sequence for Fast Resonant Tank Stabilization

• Light Load Operation Mode for Improved Efficiency

• Quiet Skip Operation Mode for Minimize Transformer Acoustic Noise

• Latched or AutoïRecovery Overload Protection

• Latched or AutoïRecovery 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 Brownïout Protection

• PFC Stage Operation Control According to Load Conditions

• Startup Current Source with Extremely Low Leakage Current

• Dynamic SelfïSupply (DSS) Operation in Offïmode or Fault Modes

• Pin to Adjacent Pin / Open Pin Fail Safe

• These are PbïFree Devices

Typical Applications

• Adapters and Offline Battery Chargers

• Flat Panel Display Power Converters

• Computing Power Supplies

• Industrial and Medical Power Sources