TNY278PG
High-efficiency AC/DC converters with offline switching capabilities
Manufacturer： power-integrations
series introduction
# TNY278PG Product Series Introduction
## 1. Overview
The TNY278PG is a highly integrated and efficient power supply solution belonging to a specific product series designed by Power Integrations. It is part of the TinySwitch - III family, which is well - known for its simplicity, reliability, and high performance in a wide range of power supply applications. This device combines a power MOSFET, a controller, and protection features on a single monolithic IC, offering a compact and cost - effective alternative to traditional discrete power supply designs.
## 2. Key Features
### 2.1 High Efficiency
- The TNY278PG is engineered to achieve high levels of efficiency. It uses advanced switching techniques that minimize power losses during the conversion process. This high efficiency not only reduces energy consumption but also helps in keeping the device cool, which is crucial for long - term reliability. For example, in typical offline flyback power supply applications, it can achieve efficiency levels of up to 80% or more, depending on the specific operating conditions and circuit design.
- The device also features a low - standby power consumption mode. In standby or no - load conditions, it can consume as little as a few milliwatts, making it an ideal choice for applications where energy efficiency is a top priority, such as in consumer electronics that need to meet strict energy - saving regulations.
### 2.2 Integrated Design
- One of the most significant advantages of the TNY278PG is its highly integrated nature. It combines a power MOSFET with a pulse - width modulation (PWM) controller on a single chip. This integration eliminates the need for multiple discrete components, reducing the overall board space required for the power supply design.
- The integrated design also simplifies the circuit layout and reduces the complexity of the power supply design process. Designers can save time and effort in component selection, PCB layout, and debugging, which ultimately leads to a faster time - to - market for their products.
### 2.3 Comprehensive Protection Features
- **Over - voltage Protection (OVP)**: The TNY278PG is equipped with built - in over - voltage protection. In the event of an abnormal increase in the output voltage, the device will automatically shut down or adjust its operation to prevent damage to the load and the power supply itself. This protection feature is essential for ensuring the safety and reliability of the power supply system, especially in applications where voltage fluctuations are common.
- **Over - current Protection (OCP)**: It also has over - current protection capabilities. If the current flowing through the device exceeds a certain threshold, the TNY278PG will limit the current to a safe level or shut down the power supply to prevent overheating and component failure. This protection is crucial for protecting the power MOSFET and other components in the circuit from damage due to excessive current.
- **Thermal Shutdown**: To prevent overheating, the TNY278PG includes a thermal shutdown feature. When the device temperature rises above a predefined safe limit, it will automatically shut down until the temperature drops to a safe level. This helps in protecting the device from thermal damage and ensures its long - term reliability.
### 2.4 Wide Input Voltage Range
The TNY278PG can operate over a wide input voltage range, typically from 85VAC to 265VAC. This wide input voltage range makes it suitable for use in a variety of global applications, as it can handle different line voltages found in different regions of the world. Whether it is used in a household appliance in North America (120VAC) or in a commercial device in Europe (230VAC), the TNY278PG can provide a stable and reliable power supply.
## 3. Applications
### 3
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TNY278PG
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