Power Integrations

TOP246F  

AC DC Converters, Offline Switches

TOP246F Description

The TOP246F is an offline switcher flyback IC designed for power management applications. Manufactured by Power Integrations, this device is part of the Power Management (PMIC) category and is housed in a TO262-7C package. It features a flyback topology and is designed for through-hole mounting. The TOP246F has a breakdown voltage of 700V and can deliver up to 125 watts of power. It includes an internal switch and offers frequency control as one of its control features. The device provides comprehensive fault protection, including current limiting, over-temperature, and over-voltage protection. The switching frequency ranges from 66kHz to 132kHz, and it has a duty cycle of 66.5%. The TOP246F is REACH unaffected and classified under HTSUS code 8542.39.0001. It is available in bulk packaging and has an output isolation feature. The moisture sensitivity level (MSL) is 1 (unlimited), making it suitable for various manufacturing environments. Despite its obsolescence, the TOP246F remains a reliable choice for specific applications due to its robust design and feature set.

TOP246F Features

• High Breakdown Voltage: With a 700V breakdown voltage, the TOP246F is well-suited for high-voltage applications, ensuring reliable performance in demanding environments.
• Internal Switch: The inclusion of an internal switch simplifies the design process and reduces the number of external components required, leading to a more compact and cost-effective solution.
• Frequency Control: The device offers frequency control, allowing for precise regulation of the switching frequency to optimize efficiency and reduce electromagnetic interference (EMI).
• Comprehensive Fault Protection: The TOP246F provides robust fault protection mechanisms, including current limiting, over-temperature, and over-voltage protection, ensuring safe operation and longevity.
• Wide Switching Frequency Range: The wide switching frequency range of 66kHz to 132kHz allows designers to optimize the trade-off between efficiency and component size.
• Output Isolation: The output isolation feature ensures that the primary and secondary circuits are electrically isolated, enhancing safety and reliability in applications where galvanic isolation is required.
• REACH Compliance: Being REACH unaffected, the TOP246F meets stringent environmental regulations, making it suitable for use in various markets.
• Moisture Sensitivity Level: The MSL of 1 (unlimited) indicates that the device is not sensitive to moisture, allowing for flexible manufacturing processes without the need for special handling procedures.

TOP246F Applications

The TOP246F is ideal for a variety of power management applications, particularly those requiring high voltage and isolated outputs. Some specific use cases include:

• Power Supplies: The device is well-suited for designing power supplies for consumer electronics, industrial equipment, and medical devices, where high voltage and isolation are critical.
• Adapters and Chargers: The TOP246F can be used in AC-DC adapters and chargers for portable devices, providing efficient power conversion and reliable performance.
• Lighting Applications: In LED lighting systems, the TOP246F can help achieve high efficiency and stable power delivery, ensuring consistent illumination.
• Telecommunications: The device can be employed in telecom equipment, where isolated power supplies are necessary to prevent signal interference and ensure reliable operation.

Conclusion of TOP246F

The TOP246F is a versatile offline switcher flyback IC that offers a comprehensive set of features tailored for high-voltage, isolated power management applications. Its high breakdown voltage, internal switch, and wide switching frequency range make it a robust solution for various power supply designs. The comprehensive fault protection mechanisms ensure safe operation, while the output isolation feature enhances reliability in applications requiring galvanic isolation. Despite its obsolescence, the TOP246F remains a reliable choice for specific applications, particularly where its unique features and performance benefits are critical.

TOP246F Documents

Download datasheets and manufacturer documentation for TOP246F

Datasheets :

TOP242-250      

HTML Datasheet :

TOP242-250