NCP1294 Series

PWM Controller for Flyback or Forward Converters

Catalog

PWM Controller for Flyback or Forward Converters

Part	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Package / Case [x]	Package / Case	Package / Case [y]	Voltage - Start Up	Fault Protection	Internal Switch(s)	Topology	Duty Cycle	Control Features	Frequency - Switching	Mounting Type	Output Isolation
ON Semiconductor NCP1294EDBR2G	-40 °C	125 ¯C	16-TSSOP	0.173 in	16-TSSOP	4.4 mm	4.6 V	Current Limiting Over Temperature Over Voltage		Boost Flyback Forward	85 %	Frequency Control Soft Start Sync	1 MHz	Surface Mount	Isolated

Catalog

PWM Controller for Flyback or Forward Converters

Key Features

• 1MHz Frequency Capability

• 1A Sink/Source Gate Drive

• Programmable Pulse-by-Pulse Overcurrent Protection

• Programmable Soft Start

Description

The NCP1294 fixed frequency flyback PWM controller contains all of the features necessary for basic flyback, forward or boost operation. 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 50uA startup current, over and under voltage protection, and bidirectional synchronization. The NCP1294 is available in a SOIC-16 and TSSOP-16 surface mount packages.