The TNY285KG is a member of the TinySwitch-4 family from Power Integrations, designed for efficient and compact power supplies. It integrates a 725 V power MOSFET, oscillator, high voltage switched current source, current limit, and thermal shutdown circuitry onto a monolithic IC. This device offers improved efficiency and reliability compared to previous generations, making it suitable for a wide range of offline power conversion applications.

Applications:

• Adapters and Chargers: For mobile phones, tablets, and other portable devices.
• Appliance Power Supplies: Used in white goods like refrigerators, washing machines, and air conditioners.
• Metering Power Supplies: Providing accurate and reliable power for energy meters.
• LED Lighting Power Supplies: Driving LEDs in various lighting applications.
• Standby and Auxiliary Power Supplies: Supplying power to microcontrollers and other low-power circuits.

Features:

• 725 V Power MOSFET: High breakdown voltage for robust operation.
• Integrated Oscillator: Simplifies design and reduces external component count.
• High Voltage Switched Current Source: Enables efficient power transfer.
• Auto-Restart Protection: Protects the power supply from damage due to fault conditions.
• Hysteretic Thermal Shutdown: Protects the IC from overheating.
• Frequency Jittering: Reduces EMI emissions.
• EcoSmart™ Energy Efficient: Meets global energy efficiency standards.
• Accurate Current Limit: Improves overload protection.

Benefits:

• High Energy Efficiency: Reduces energy consumption and heat dissipation.
• Simplified Design: Integrated features minimize external component count.
• Enhanced Reliability: Built-in protection features ensure robust operation.
• Compact Size: Enables smaller and more compact power supply designs.
• Reduced EMI: Frequency jittering minimizes electromagnetic interference.

Additional Details:

The TNY285KG operates in a flyback topology and is suitable for both isolated and non-isolated power supply designs. It supports a wide range of input voltages, typically from 85 VAC to 265 VAC. The device is available in a variety of packages, including DIP-8 and SMD-8. The EcoSmart technology enables the power supply to meet stringent energy efficiency standards, such as Energy Star and ErP. The accurate current limit feature provides improved overload protection, preventing damage to the power supply and connected devices. The internal oscillator operates at a frequency of around 132 kHz. This device is commonly used in applications requiring a low-cost, efficient, and reliable power supply solution.