描述 Description

The NCP1067X products integrate a fixed frequency current mode controller with a
700 V MOSFET. Available in a SOIC-7 package, the NCP1067X offer a high level of
integration, including soft?start, frequency?jittering, short?circuit protection, skip?cycle, ramp compensation, and a Dynamic Self?Supply (eliminating the need for an auxiliary winding).
During nominal load operation, the NCP1067X switches at one of the available
frequencies (60 or 100 kHz). When the output power demand diminishes, the IC automatically enters into a skip mode to reduce the standby consumption down.
Protection features include: a timer to detect an overload or a short?circuit event,
Overvoltage Protection with auto?recovery.
For improved standby performance, the connection of an auxiliary winding or
supplying the IC from the output, stops the DSS operation and helps to reduce input power consumption below 15 mW at high line.
NCP1067x can be seamlessly used both in non-isolated and in isolated topologies.

特性 Features

? Built?in 700 V MOSFET with RDS(on) of 34 Ω
? Up to 6.7W output SMPS design capability
? Large Creepage Distance Between High?voltage Pins
? Safer and more robust design
? 100 & 250 mA Peak Current
? Increased design scalibility
? Direct Feedback connection for non-isolated converter
? Simpler and lower cost Buck or Buck-Boost designs
? Auto-Recovery Output Short Circuit Protection with Timer-Based Detection
? Provides more robust protection without worrying about the coupling of the aux winding
? Frequency Jittering
? Better EMI Signature Over the Entire Operating Range
? Current?Mode Fixed Frequency Operation – 60 or 100 kHz
? Ability to scale for efficiency or size
? Skip-Cycle at low peak currents
? Improved efficiency at light loads
? Dynamic Self?Supply
? No Need for an Auxiliary Winding

應(yīng)用 Application

? Auxiliary Power Supply Isolated and Non-isolated
? White goods (Washing, Cold, Aircon ,...)
? LED Lighting systems
? Wide Vin Industrial low power SMPS
? Power Meter SMPS
? Auxiliary Power Supply Isolated and Non-isolated
? White goods
? LED Lighting systems
? Wide Vin Industrial low power SMPS
? Power Meter SMPS