Power Integrations

TOP256MG

TOP256MG Description

The TOP256MG is an integrated circuit (IC) designed for offline switch-mode power supplies, specifically utilizing a flyback topology. Manufactured by Power Integrations, this IC is part of the Power Management (PMIC) category and is housed in a 10-lead CSDIP package. Despite being marked as obsolete, the TOP256MG remains a robust solution for applications requiring efficient power conversion.

TOP256MG Features

• Topology: The TOP256MG employs a flyback topology, which is ideal for compact and cost-effective power supply designs.
• Mounting Type: Through-hole mounting ensures mechanical stability and ease of integration into various PCB designs.
• Voltage - Breakdown: With a breakdown voltage of 700V, the TOP256MG is well-suited for high-voltage applications.
• Internal Switch(s): The inclusion of an internal switch simplifies the design process and reduces the number of external components required.
• Power (Watts): Capable of delivering up to 34 watts, this IC is suitable for a wide range of power requirements.
• Fault Protection: Comprehensive protection features, including current limiting, over-temperature, and over-voltage protection, enhance reliability and safety.
• Frequency - Switching: A switching frequency of 66kHz allows for efficient power conversion while minimizing electromagnetic interference (EMI).
• Duty Cycle: A maximum duty cycle of 78% ensures efficient power delivery and thermal management.
• Package: The tube packaging format facilitates easy handling and storage.
• Output Isolation: The isolated output design provides safety and reliability in applications where galvanic isolation is necessary.
• Compliance: The TOP256MG is REACH unaffected and RoHS compliant, meeting environmental and regulatory standards.
• Moisture Sensitivity Level (MSL): With an MSL rating of 1 (unlimited), the TOP256MG is suitable for storage and handling in various environmental conditions.

TOP256MG Applications

The TOP256MG is ideal for a variety of applications that require efficient and reliable power conversion. Some specific use cases include:

• Adaptive Power Supplies: The TOP256MG's high breakdown voltage and internal switch make it suitable for adaptive power supplies used in consumer electronics and industrial equipment.
• Charger Circuits: Its compact design and high power capability make it an excellent choice for charger circuits in devices such as smartphones, tablets, and laptops.
• Power Adapters: The flyback topology and comprehensive protection features ensure that power adapters designed with the TOP256MG are both efficient and safe.
• Industrial Control Systems: The robustness and reliability of the TOP256MG make it suitable for power supplies in industrial control systems where high voltage and high power are required.

Conclusion of TOP256MG

The TOP256MG from Power Integrations is a versatile and reliable IC for offline switch-mode power supplies. Its flyback topology, high breakdown voltage, and comprehensive protection features make it an excellent choice for a variety of applications. Despite its obsolete status, the TOP256MG remains a valuable component for engineers and designers looking for a proven and efficient power management solution. Its compliance with environmental and regulatory standards further enhances its appeal in today's electronics market.