Onsemi NCP1568 | Demoboard NCP1568DC48WGEVB

Description

The NCP1568DC48WGEVB is a 48 W, wide range DC input of 120 V to 400 V, constant voltage power supply intended for Server AUX power and other DC input applications requiring a low profile with high efficiency and high power density. The NCP1568DC48WGEVB uses an Active Clamp Flyback (ACF) topology utilizing ON Semiconductor NCP1568 ACF controller, NCP51530A half−bridge driver, NCP4306 synchronous rectified controller and secondary NTMFS6B03 synchronous MOSFET to achieve over 94% efficiency at full load.

Features

• Topology and Control Scheme
• Active Clamp Flyback Topology Aids in ZVS
• Proprietary Multi−Mode Operation to Enhance Light Load Efficiency
• Proprietary Adaptive ZVS Allows High Frequency Operation while Reducing EMI
• Inbuilt Adaptive Dead−Time for Both Main and Active Clamp FETs
• Peak Current−Mode Control with Inbuilt Slope Compensation with Options
• Flexible Control Scheme and Programmability Allow for Configuration with Either External Silicon or GaN FETs
• DCM and Light Load Operation
• Customer Programmable Optional Transition to DCM
• Integrated Frequency Foldback with Minimum Frequency
• Clamp for Highest Performance in Standby Mode
• Minimum Frequency Clamp and Quiet Skip Eliminates Audible Noise
• Standby Power < 30 mW
• Integrated HV and Startup Circuits
• 700 V Startup Circuit
• AC Line Brownout Detect
• Drivers
• 0.85 A/1.5 A Source/Sink for Low Side
• 65 mA/150 mA Active Clamp Driver Output
• Oscillator
• Programmable Frequency from 100 kHz to 1 MHz
• Internal Soft−Start Timer with 4 Options
• Protection
• Dedicated FLT Pin Compatible witha Thermistor
• Adjustable Over Power Protection (OPP)
• Option for Auto−Recovery and Latchedin Various Faults
• Internal Thermal Shutdown

Typical applications

• Notebook Adapters, High Density Chargers
• USB Power Delivery, Industrial Power Supplies

More information

• Datasheet
• IC product information