Power Integrations

TNY256P

TNY256P Description

The TNY256P from Power Integrations is an offline switcher IC designed for flyback topology applications, offering a compact and efficient solution for low-power AC/DC conversion. This obsolete but historically significant device integrates a 700V breakdown voltage MOSFET, enabling robust performance in offline power supplies. With a 10W power rating and 130kHz switching frequency, it delivers reliable power conversion while maintaining high efficiency. The isolated output ensures safety in end applications, making it suitable for consumer and industrial power systems. Packaged in an 8DIP through-hole format, the TNY256P is optimized for ease of integration into legacy designs.

TNY256P Features

• Integrated 700V MOSFET: Eliminates the need for an external switch, reducing component count and board space.
• Advanced Control Features: Includes EN (enable) pin for precise power management and 66% duty cycle for optimized performance.
• Comprehensive Fault Protection: Features current limiting and over-temperature protection to enhance system reliability.
• High Switching Frequency (130kHz): Enables smaller transformer designs, lowering overall system cost.
• Isolated Output: Meets safety standards for offline power supplies.
• Wide Operating Range: Suitable for universal input voltage applications (85VAC–265VAC).

TNY256P Applications

The TNY256P is ideal for low-power, cost-sensitive applications requiring compact and efficient power conversion, such as:

• Auxiliary power supplies for industrial controls and appliances.
• Standby power modules in consumer electronics (e.g., TVs, set-top boxes).
• LED drivers and battery chargers with isolated outputs.
• Legacy power systems where through-hole mounting is preferred.

Conclusion of TNY256P

While the TNY256P is now obsolete, its legacy as part of the TinySwitch® Plus series underscores its role in simplifying offline power supply designs. Its integrated high-voltage MOSFET, robust protection features, and compact form factor made it a preferred choice for low-power applications. Engineers seeking modern alternatives may explore newer Power Integrations offerings, but the TNY256P remains a benchmark for efficiency and reliability in its class.