TOP242FN

TOP242FN - TOPSwitch-GX Offline Switcher IC

The TOP242FN from Power Integrations is a high-performance offline switcher IC from the TOPSwitch-GX family, designed for reliable flyback topology power supply applications. This integrated solution combines a 700V power MOSFET, PWM control, fault protection, and other control circuitry on a single chip, reducing component count and improving system reliability.

Key Features & Benefits

• 22W Power Output - Ideal for low to medium power applications including adapters, chargers, and auxiliary supplies
• 700V Breakdown Voltage - Provides excellent margin for universal input (85-265VAC) applications
• Integrated Protection - Built-in current limiting, over-temperature, and over-voltage protection safeguards your design
• Frequency Modulation - 66kHz to 132kHz switching frequency with frequency control for EMI optimization
• High Efficiency - 66.5% maximum duty cycle enables efficient power conversion
• Isolated Output - Provides safe isolation between primary and secondary circuits
• Wide Operating Range - Functions reliably from -40°C to 150°C junction temperature
• Through-Hole Package - TO-262-7C package with formed leads for easy PCB mounting and thermal management

Typical Applications

• AC-DC power adapters and chargers
• Auxiliary power supplies for appliances
• Standby power supplies
• Battery chargers
• LED lighting drivers
• Industrial control power supplies

Why Choose TOP242FN?

The TOPSwitch-GX family represents a proven, cost-effective solution for offline power conversion. By integrating the high-voltage MOSFET and control circuitry, the TOP242FN significantly reduces design complexity, component count, and board space while improving reliability. The comprehensive fault protection features ensure safe operation under all conditions, making it an excellent choice for applications requiring high reliability and regulatory compliance.

RoHS Compliant - This product meets RoHS environmental standards for restricted substances.

Quality & Reliability

As an authorized distributor of Power Integrations components, we provide genuine TOP242FN ICs with full traceability and manufacturer warranty support. Each component is sourced directly from Power Integrations or authorized channels, ensuring authenticity and reliability for your critical applications.

• TOP242FN.pdf