Overview
The TNY279PNAU, produced by Power Integrations, is part of the TinySwitch-III family of high-voltage power MOSFET switches combined with power supply controllers. This integrated device is designed to provide high efficiency, reliability, and compliance with global energy efficiency regulations. It is particularly suited for applications requiring low component count, high bandwidth, and excellent transient load response.
Key Specifications
| Parameter | Value |
|---|---|
| Maximum Power Rating | 25 W (at 230 VAC) |
| MOSFET Voltage Rating | 700 V |
| No-Load Consumption | < 150 mW at 265 VAC without bias winding, < 50 mW with bias winding |
| Efficiency | >80% in typical applications |
| Thermal Shutdown | Accurate hysteretic thermal shutdown protection with automatic recovery |
| Output Overvoltage Protection | Output overvoltage shutdown with optional Zener |
| Line Undervoltage Detection | Line undervoltage detect threshold set using a single optional resistor |
| EMI Performance | Excellent conducted and radiated EMI performance, >12 dBmV margin to EN55022 Class B conducted EMI limits |
Key Features
- High-voltage power MOSFET switch combined with a power supply controller in one device
- Very low component count enhances reliability and enables single-sided printed circuit board layout
- High bandwidth provides fast turn-on with no overshoot and excellent transient load response
- EcoSmart™ – Extremely energy efficient, easily meets all global energy efficiency regulations
- Improved auto-restart delivers <3% of maximum power in short-circuit and open loop fault conditions
- Extended creepage between DRAIN and all other pins improves field reliability
- ON/OFF control provides constant efficiency down to very light loads
Applications
The TNY279PNAU is suitable for a variety of applications, including:
- Chargers and adapters for cell phones, cordless phones, PDAs, digital cameras, and MP3/portable audio devices
- Low-cost, high-efficiency flyback power supplies for universal input and various output voltages
- Compliance with mandatory CEC regulations and 1 W PC standby requirements
Q & A
- What is the maximum power rating of the TNY279PNAU? The maximum power rating is 25 W at 230 VAC.
- What is the voltage rating of the MOSFET in the TNY279PNAU? The MOSFET has a voltage rating of 700 V.
- How efficient is the TNY279PNAU in typical applications? The TNY279PNAU achieves an efficiency of >80% in typical applications.
- What is the no-load consumption of the TNY279PNAU? The no-load consumption is < 150 mW at 265 VAC without bias winding, and < 50 mW with bias winding.
- Does the TNY279PNAU have thermal shutdown protection? Yes, it features accurate hysteretic thermal shutdown protection with automatic recovery.
- How does the TNY279PNAU handle output overvoltage protection? It includes output overvoltage shutdown with an optional Zener.
- What is the EMI performance of the TNY279PNAU? It achieves excellent conducted and radiated EMI performance, with >12 dBmV margin to EN55022 Class B conducted EMI limits.
- What are some common applications for the TNY279PNAU? Common applications include chargers and adapters for various portable devices and low-cost, high-efficiency flyback power supplies.
- Does the TNY279PNAU meet global energy efficiency regulations? Yes, it easily meets all global energy efficiency regulations.
- How does the TNY279PNAU handle short-circuit and open loop fault conditions? It delivers <3% of maximum power in such conditions and has improved auto-restart capabilities.
