Power Integrations

TOP256PG

TOP256PG Description

The TOP256PG is an offline switch IC designed for flyback topology applications, manufactured by Power Integrations. This device is part of the AC-DC converters and offline switches category, offering a robust solution for power conversion needs. The TOP256PG features an 8DIP package and is designed for through-hole mounting, making it suitable for a variety of industrial and consumer electronics applications. Despite its obsolescence status, the TOP256PG remains a reliable choice for specific power conversion tasks due to its comprehensive feature set and proven performance.

TOP256PG Features

• Topology and Mounting: The TOP256PG employs a flyback topology, which is ideal for isolated power supplies with a single output. Its through-hole mounting type ensures secure and durable integration into printed circuit boards.
• Voltage and Power With: a breakdown voltage of 700V, the TOP256PG can handle high-voltage applications, making it suitable for demanding power supply designs. It delivers up to 34 watts of power, providing sufficient capacity for a range of devices.
• Internal Switch and Duty Cycle: The inclusion of an internal switch simplifies the design process and reduces component count. The device operates with a duty cycle of 78%, ensuring efficient power delivery.
• Fault Protection: The TOP256PG offers comprehensive fault protection mechanisms, including current limiting, over-temperature protection, and over-voltage protection. These features enhance reliability and protect the device from potential damage.
• Switching Frequency: The device operates at a switching frequency of 66kHz, which balances efficiency and electromagnetic interference (EMI) considerations.
• Compliance and Packaging: The TOP256PG is REACH unaffected and RoHS compliant, ensuring it meets environmental and safety standards. It is packaged in a tube format, which is convenient for handling and storage.
• Output Isolation: The isolated output design ensures safety and reliability, making it suitable for applications where galvanic isolation is required.

TOP256PG Applications

The TOP256PG is ideal for a variety of applications where isolated power supplies are needed. Its high-voltage capability and efficient power delivery make it suitable for:

• Consumer Electronics: Ideal for power supplies in devices such as televisions, monitors, and other high-voltage appliances.
• Industrial Equipment: Suitable for power conversion in industrial control systems, where reliability and isolation are critical.
• Medical Devices: The isolated output and comprehensive protection features make it a good fit for medical equipment power supplies, ensuring patient safety and device reliability.
• Telecommunications: Can be used in power supplies for telecommunication infrastructure, where high efficiency and fault protection are essential.

Conclusion of TOP256PG

The TOP256PG, despite being obsolete, remains a reliable and efficient solution for offline switch applications requiring a flyback topology. Its high-voltage capability, internal switch, and comprehensive fault protection features make it a robust choice for a variety of applications. The device's compliance with environmental and safety standards ensures it meets industry requirements. While newer models may offer advanced features, the TOP256PG continues to be a viable option for specific power conversion tasks, particularly in legacy systems and applications where its unique features are advantageous.