The PFM1N70 is a high-voltage power MOSFET manufactured by Power Integrations. It's designed for use in off-line power supplies and DC-DC converters where high efficiency and reliability are critical.

Applications

• Off-line power supplies
• AC-DC adapters
• Battery chargers
• LED lighting drivers
• DC-DC converters

Features

• 700V Drain-Source Voltage (VDS)
• 1A Continuous Drain Current (ID)
• Low On-Resistance (RDS(on))
• High Switching Speed
• TO-92 Package
• Integrated Avalanche Diode

Benefits

• High voltage capability allows for direct operation from rectified AC line voltage.
• Low on-resistance minimizes power losses and improves efficiency.
• Fast switching speed reduces switching losses and allows for higher operating frequencies.
• Integrated avalanche diode provides robust protection against voltage transients.
• Small TO-92 package simplifies board layout and reduces component count.

Additional Details

The PFM1N70 MOSFET is designed to operate efficiently in high-voltage switching applications. Its low on-resistance minimizes conduction losses, while its fast switching speed reduces switching losses. The integrated avalanche diode provides protection against inductive kickback and other voltage transients, enhancing the overall reliability of the power supply. The TO-92 package is a through-hole package that is easy to solder and provides good thermal performance. This MOSFET is a suitable choice for cost-sensitive applications requiring a robust and efficient high-voltage switch. The gate threshold voltage is typically around 3V, making it compatible with a wide range of gate drive circuits. The device is typically used in a flyback converter topology. Its high voltage rating and robust design make it suitable for applications where input voltage fluctuations and transient events are common.