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TNY174PG

TNY174PG Description

The TNY174PG from Power Integrations is an obsolete but highly efficient flyback switcher IC designed for AC/DC converter applications. It integrates a 650V breakdown voltage MOSFET, enabling robust performance in offline power supplies. With an output power capability of 8.5W (85-265VAC) and 11W (230VAC), it is optimized for compact, energy-efficient designs. The IC operates at a 132kHz switching frequency with a 65% duty cycle, ensuring stable power delivery. Its secondary-side synchronous rectification (SR) topology enhances efficiency, making it ideal for low-power applications.

TNY174PG Features

• Integrated 650V MOSFET: Reduces external component count and simplifies design.
• Secondary-Side SR Support: Improves efficiency in flyback converters.
• Comprehensive Protection: Includes current limiting, over-load, over-temperature, over-voltage, and short-circuit protection for enhanced reliability.
• Control Features: Enable (EN) pin for power management flexibility.
• Wide Input Range: Supports 85-265VAC for global compatibility.
• RoHS3 Compliant & MSL1: Environmentally friendly and suitable for unlimited shelf life.

TNY174PG Applications

The TNY174PG excels in low-power offline SMPS designs, such as:

• Auxiliary power supplies for industrial equipment.
• Consumer electronics (e.g., set-top boxes, routers).
• LED drivers requiring high efficiency and compact footprints.
• Home appliances with stringent energy efficiency requirements.

Conclusion of TNY174PG

Though marked obsolete, the TNY174PG remains a highly reliable solution for low-power AC/DC conversion. Its integrated protections, secondary-side SR support, and wide input range make it a standout choice for cost-sensitive, space-constrained applications. Engineers seeking efficiency and robustness in legacy designs may still find value in this IC. For newer projects, consider Power Integrations' updated offerings with similar or improved specifications.