PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power
●Housed in SOIC−8 or PDIP−8 package, the NCP1200A enhances the previous NCP1200 series by offering a reduced optocoupler current together with an increased drive capability. Due to its novel concept, the circuit allows the implementation of complete off−line AC−DC adapters, battery charger or a SMPS where standby power is a key parameter.
●Features
●•No Auxiliary Winding Operation
●•Auto−Recovery Internal Output Short−Circuit Protection
●•Extremely Low No−Load Standby Power
●•Current−Mode Control with Skip−Cycle Capability
●•Internal Temperature Shutdown
●•Internal Leading Edge Blanking
●•250 mA Peak Current Capability
●•Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz
●•Direct Optocoupler Connection
●•SPICE Models Available for TRANsient and AC Analysis
●•Pin to Pin Compatible with NCP1200
●•Pb−Free Packages are Available
●Typical Applications
●•AC−DC Adapters for Portable Devices
●•Offline Battery Chargers
●•Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
