TNY278GN

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TNY278GN

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IC OFFLINE SWITCH FLYBACK 8SMD

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Thông số kỹ thuật

thuộc tính Giá trị
Package Tube
Series TinySwitch®-III
ProductStatus Discontinued at Digi-Key
OutputIsolation Isolated
InternalSwitch(s) Yes
Voltage-Breakdown 700V
Topology Flyback
DutyCycle 65%
Frequency-Switching 132kHz
Power(Watts) 28 W
FaultProtection Current Limiting, Open Loop, Over Temperature, Over Voltage, Short Circuit
ControlFeatures EN
OperatingTemperature -40°C ~ 150°C (TJ)
Package/Case 8-SMD (7 Leads), Gull Wing
SupplierDevicePackage SMD-8C

Tổng quan

Description

TNY278GN is an integrated circuit (IC) from Power Integrations, part of their TinySwitch-III family. It is primarily used in power supply applications to ensure efficient and reliable power conversion. This IC combines a high-voltage power MOSFET switch with a power supply controller in a single device, simplifying the design and reducing the component count for switch-mode power supplies.
Key features of the TNY278GN include its high efficiency, due to variable switching frequency and frequency jittering, which help minimize electromagnetic interference (EMI). It also offers robust protection features like output short circuit, over-temperature, and over-voltage protection, enhancing the reliability of the applications it is used in.
The TNY278GN is suitable for use in a wide range of applications, such as chargers, adapters, and consumer electronics, where compact size and high energy efficiency are priorities. Its design supports both flyback and buck-boost configurations, allowing for versatile power supply solutions.

Equivalent

The TNY278GN is a TinySwitch-II series integrated circuit by Power Integrations, used for energy-efficient switch mode power supply designs. Equivalent products or alternatives with similar functions include:
1. LinkSwitch series ICs by Power Integrations.
2. LNK6XX series by Power Integrations.
3. TOPSwitch series by Power Integrations.
4. Fairchild's (now ON Semiconductor) FSQ series.
Always verify specific requirements and compatibility before selecting an alternate part.

Features

The TNY278GN is a member of the TinySwitch-II family of energy-efficient, integrated offline switcher ICs designed by Power Integrations. Key features include:
1. Energy Efficiency: It operates at high efficiency across a wide load range, reducing energy consumption in standby and active modes.
2. Integrated Design: The device combines a 700V power MOSFET, oscillator, high-voltage switch, current limit, and thermal shutdown circuitry in a single package.
3. Wide Input Voltage Range: It supports universal input ranges, making it suitable for global applications.
4. Primary-Side Regulation: This feature eliminates the need for an optocoupler, simplifying design and reducing cost.
5. Current Mode Control: Offers enhanced transient response and better line/load regulation.
6. Auto-Restart Protection: Protects against output short circuits and overloads by reducing power delivery in fault conditions.
7. EcoSmart Technology: Ensures low standby power consumption, meeting stringent global efficiency standards.
8. Package: Available in a small 8-pin DIP or SMD package, aiding in compact PCB design.
The TNY278GN is ideal for use in chargers, adapters, and other low-power applications requiring reliability and efficiency.

Pinout

The TNY278GN is a member of the TinySwitch-III family of integrated off-line switcher ICs, designed for use in power supply applications. It comes in an SMD-8 package (Surface-Mount Device with 8 pins). Here are the pin functions:
1. DRAIN (Pin 1, 2, 3): High voltage power MOSFET drain connection. This pin is connected to the primary winding of the transformer.
2. BYPASS/MULTI-FUNCTION (Pin 4): This pin is used for connecting an external bypass capacitor for the internally regulated 5.85 V supply. It also provides a connection for line undervoltage and overvoltage programming and remote on/off control.
3. FEEDBACK (Pin 5): This pin is used for sensing the output voltage through an optocoupler to regulate the power supply output.
4. SOURCE (Pin 6, 7, 8): This pin is the return path for the primary current and is connected to the primary side ground.
The TNY278GN is designed for efficiency and low standby power, ideal for use in low power adapters, chargers, and other small power supply applications.

Manufacturer

The TNY278GN is manufactured by Power Integrations, Inc. Power Integrations is a semiconductor company that specializes in the development of high-performance electronic components used in power conversion systems. Their products are designed for use in a wide range of electronic applications such as AC-DC power supplies and energy-efficient power conversion systems. The company is known for its innovative solutions that help reduce energy consumption and improve power efficiency in various consumer, industrial, and enterprise products.

Application

The TNY278GN is a compact, monolithic high-voltage switching regulator designed for energy-efficient power supply applications. Its primary use is in power converters that require small size and low cost, such as chargers, adapters, and auxiliary power supplies. It's commonly employed in consumer electronics, home appliances, LED drivers, and industrial applications where efficient power management and reduced standby power consumption are essential. The device supports various topologies like flyback converters and provides features such as high efficiency, low EMI, and robust protection mechanisms, making it suitable for powering a wide range of low-power to medium-power devices.

Package

The TNY278GN is a part of the TinySwitch-III series by Power Integrations, and it comes in a surface-mount SMD package type known as SMD-8. This package type is designed for efficient board space utilization in various electronic applications.

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