Power Integrations

TOP246R-TL  

AC DC Converters, Offline Switches

TOP246R-TL Description

The TOP246R-TL from Power Integrations is a high-performance offline switcher IC designed for flyback topology applications. This surface-mount device integrates a 700V breakdown voltage MOSFET, enabling robust power handling up to 64W with isolated output. It operates within a 66kHz–132kHz switching frequency range and features a 66.5% duty cycle, making it suitable for efficient power conversion. Although marked as "Not For New Designs", it remains a reliable choice for legacy systems requiring frequency control and comprehensive fault protection. Packaged in a TO-263 (D2PAK) reel format, it complies with REACH and EAR99 regulations, ensuring environmental and export compatibility.

TOP246R-TL Features

• Integrated 700V MOSFET: Reduces external component count and simplifies design.
• Advanced Protection: Combines current limiting, over-temperature, and over-voltage safeguards for system reliability.
• Frequency Control: Adjustable 66kHz–132kHz range optimizes efficiency across load conditions.
• High Duty Cycle: 66.5% maximizes power delivery in compact designs.
• Isolated Output: Ensures safety in AC/DC applications.
• Surface-Mount (TO-263): Ideal for automated PCB assembly.

TOP246R-TL Applications

• Industrial Power Supplies: For legacy equipment requiring stable, isolated power.
• Consumer Electronics: Adapters and chargers needing compact, high-efficiency solutions.
• LED Drivers: Utilizes frequency control for dimming and stability.
• Auxiliary Power Modules: In telecom or HVAC systems where fault protection is critical.

Conclusion of TOP246R-TL

The TOP246R-TL excels in flyback-based AC/DC conversion, offering a balance of high voltage tolerance, integrated protections, and frequency flexibility. While not recommended for new designs, its 64W capability and TO-263 packaging make it a pragmatic choice for maintaining or upgrading existing systems. Engineers valuing reliability and simplified BOMs will find it particularly advantageous in industrial and consumer applications.

TOP246R-TL Documents

Download datasheets and manufacturer documentation for TOP246R-TL

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