NCP1294 Datasheet PDF - ON Semiconductor

●The NCP1294 fixed frequency feed forward voltage mode PWM controller contains all of the features necessary to be configured in a Flyback, Boost or Forward topology. This PWM controller has been optimized for high frequency primary side control operation. In addition, this device includes such features as: Soft−Start, accurate duty cycle limit control, less than 50μA startup current, over and undervoltage protection, and bidirectional synchronization. The NCP1294 is available in a 16 lead SOIC narrow surface mount package.

●Features

●• 1.0 MHz Frequency Capability

●• Fixed Frequency Voltage Mode Operation, with Feed Forward

●• Thermal Shutdown

●• Undervoltage Lock−Out

●• Accurate Programmable Max Duty Cycle Limit

●• 1.0 A Sink/Source Gate Drive

●• Programmable Pulse−By−Pulse Overcurrent Protection

●• Leading Edge Current Sense Blanking

●• 75 ns Shutdown Propagation Delay

●• Programmable Soft−Start

●• Undervoltage Protection

●• Overvoltage Protection with Programmable Hysteresis

●• Bidirectional Synchronization

●• 25 ns GATE Rise and Fall Time (1.0 nF Load)

●• 3.3 V 3% Reference Voltage Output

●• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant