The TEA1781T from NXP Semiconductors is a highly integrated Switched Mode Power Supply (SMPS) controller designed for compact, efficient, and robust power conversion solutions. This controller is suitable for a wide range of applications, including adapters, chargers, and standby power supplies.

Featuring a quasi-resonant topology, the TEA1781T provides a low electromagnetic interference (EMI) signature, high efficiency, and a reduced component count, making it an ideal choice for modern, environmentally friendly power supply designs. The device operates in a quasi-resonant mode at high power levels for optimal efficiency and switches to fixed-frequency operation at lower power levels to maintain excellent performance across the entire load range.

Key Features:

• High Efficiency: Quasi-resonant operation at high power levels for maximum efficiency and energy savings.
• Low Standby Power: Excellent standby power performance, meeting stringent global energy efficiency standards.
• Integrated Protections: Features various protection mechanisms including overvoltage, overcurrent, and overtemperature protection to ensure safe operation under abnormal conditions.
• GreenChip Technology: Incorporates NXP's GreenChip technology for energy-efficient power solutions.
• Frequency Modulation: Frequency modulation for reduced EMI and compliance with global EMI regulations.
• Valley Switching: Valley switching for reduced switching losses and improved efficiency.

Applications:

• Notebook adapters
• Consumer electronics power supplies
• Standby and auxiliary power supplies
• Chargers for mobile devices

The TEA1781T is available in a compact SO8 package, enabling designers to create power supplies with a small form factor without sacrificing performance. With its integrated features and high level of integration, the TEA1781T allows for a simplified design process, reducing time to market for a variety of power supply applications.