on September 28th 381

Everything You Need to Know About the TNY268PN Power Switcher

The TNY268PN Power Switcher is a compact and efficient power management device used in various applications like LED lighting, medical equipment, and industrial automation. It integrates features such as a 700V power MOSFET, thermal shutdown, and undervoltage detection to ensure stable performance and energy efficiency. This article will explore the TNY268PN’s pin configuration, technical specifications, and unique capabilities, along with its applications and benefits. We'll also provide a detailed look at how the switcher supports reliable power supply in challenging environments and offers cost-effective solutions for manufacturers.

Catalog

Overview of the TNY268PN Power Switcher

The TNY268PN is a low-power, energy-efficient switcher housed in a compact 8-pin DIP package. This device is designed for efficient power management and includes a 700V power MOSFET, providing strong performance. It also features a current limit function to maintain safe operation, a high-voltage switching source for effective energy control, an oscillator for stable frequency management, and a thermal shutdown mechanism to prevent overheating.

Unlike conventional designs, the TNY268PN simplifies circuitry by removing the need for bias windings. Instead, it utilizes its drain pin to source power for startup and operation. Additional features include an auto-restart function to ensure reliable operation in case of faults, line undervoltage detection to maintain stable performance during voltage fluctuations, and frequency jittering to reduce electromagnetic interference. With these combined capabilities, the TNY268PN offers dependable power management for various applications.

Replacement and Equivalent Models

• TOP221PN

• TOP223PN

• TNY266PN

TNY268PN Symbol, Footprint, and Pin Configuration

The TNY268PN features eight pins, each assigned to a specific function, significantly impacting the switcher's overall performance. Understanding the role and connection of each pin is vital for leveraging this device in various power management applications.

Pin 1 (BP)

This pin connects to an external 0.1 µF capacitor, ensuring a steady internal 5.8V supply. Using capacitors with low Equivalent Series Resistance (ESR) is advisable, as they enhance the device's performance and stability. High-quality ceramic capacitors are favored for their consistent reliability under varying temperatures.

Pins 2 and 3 (S)

These pins serve as the control circuit commons, connected directly to the MOSFET source. This arrangement facilitates effective signal management and reduces noise within the control circuit. Proper grounding techniques are crucial to minimize interference and maintain signal quality, especially in high-frequency switching environments.

Pin 4 (EN/UV)

Functioning as both an enable input and an undervoltage sensing point, this pin disables MOSFET switching if the current surpasses 240 µA and detects undervoltage conditions via an external resistor. Choosing an appropriate resistor is essential for precise voltage sensing and protection. Precision resistors are typically used to ensure reliable undervoltage protection.

Pin 5 (D)

This pin acts as the drain connection for the MOSFET, supplying the necessary internal operating current. It is integral in managing current flow and thermal conditions. In practice, integrating thermal pads or heat sinks can improve heat dissipation, optimizing performance and prolonging the device's lifespan.

Pins 7 and 8 (S(HV RT))

These pins are designated for the high-voltage source return of the MOSFET. The dual-pin configuration enhances current-carrying capacity and supports balanced load distribution. Proper isolation and routing of these pins are necessary to prevent high-voltage leakage and ensure safety. Utilizing wide PCB traces or multiple vias can ensure safe and reliable operation in high-voltage applications.

Technical Parameters of TNY268PN Switcher

Characteristics of the TNY268PN Switcher

Energy Efficiency

The TNY268PN switcher is designed to operate with impressive energy efficiency. It consumes less than 250mW of power at a 265VAC input, even without the need for a bias winding. Incorporating a bias winding can reduce its power usage even further, bringing it down to below 50mW. These features make it a good choice for low-power applications, such as mobile chargers and PC standby modes. Efficient energy use not only conserves power but also helps prolong the life of both the switcher and the devices it powers.

Performance Features

The switcher includes fast switching capabilities and operates with a current limit to reduce fluctuations in line frequency, ensuring a stable power supply. By managing voltage fluctuations more effectively, the switcher can deliver consistent power even in less stable power grids. This stability helps minimize wear on electronic components and lowers the need for maintenance or replacement, supporting longer-lasting device performance.

Cost-Effectiveness

The TNY268PN is a cost-effective solution compared to traditional RCC and linear power supplies. With built-in under-voltage detection and automatic restart functions, it helps reduce the overall system cost and simplifies the design process. This allows manufacturers to use fewer components, which can lower production costs and speed up assembly times, making the switcher a competitive option in the market.

Electromagnetic Interference Minimization

The TNY268PN switcher is built to minimize electromagnetic interference (EMI), ensuring that electronic devices function smoothly without causing disruptions to nearby equipment. Reduced EMI not only improves the performance of devices but also ensures they meet industry regulations, making the switcher suitable for a wide variety of applications.

Manufacturer of TNY268PN Switcher

Power Integrations, Inc., founded in 1988, designs and sells integrated circuits (ICs) for high-voltage power conversion. Their approach combines multiple components into a single IC, reducing the total number of parts needed, speeding up the design process, and improving energy efficiency and reliability. This method aligns with industry trends toward creating smaller, more dependable power solutions.

The company’s focus on energy efficiency is evident through its innovative technology. By integrating various functions within a single chip, they achieve better power management and reduce energy loss. This is particularly beneficial in sectors like energy conservation, where even small efficiency gains can lead to significant cost and energy savings.

Their products find practical use in many industries. In renewable energy, their ICs optimize power conversion for solar panels and wind turbines, providing stable and reliable performance. In the automotive sector, especially for electric vehicles, their compact and efficient chips contribute to improved vehicle design and performance.

In renewable energy, Power Integrations’ solutions help maximize energy capture and minimize waste, supporting the growth of renewable energy infrastructure. For lighting and IoT applications, the company offers ICs that provide better power regulation and control, resulting in longer device lifespans and lower operational costs. As connected devices become more common, these reliable power solutions help maintain consistent performance and sustainable energy use across various devices.

Uses of the TNY268PN Switcher

The TNY268PN Switcher is known for its flexibility and efficient power management, making it suitable for a wide range of applications. Its adaptability and reliability allow it to support various industries effectively.

LED Lighting

The TNY268PN plays an important role in creating power supplies for LED lighting systems. By optimizing power delivery, it ensures LEDs work efficiently, which boosts their performance and extends their lifespan. Using high-efficiency power supplies like the TNY268PN leads to noticeable energy savings, especially in large commercial lighting setups that operate for long hours.

Servers and Data Centers

Servers and data centers, which demand reliable and efficient power systems due to continuous operation, benefit greatly from the TNY268PN. Its efficient power management reduces operational costs and lowers environmental impact. This helps maintain uptime and smooth performance, which is necessary for enterprise-level IT services.

Medical Equipment

The TNY268PN is also well-suited for powering medical equipment like imaging devices and portable tools, where a consistent and reliable power supply is critical. The consistent power delivery ensures these devices operate smoothly, contributing to better patient care and accurate diagnostics.

Consumer Electronics

In devices such as TVs, game consoles, and home appliances, the TNY268PN ensures efficient power management. This supports overall device performance and longevity while lowering energy consumption. Integrating this switcher in consumer electronics reflects a practical approach to reducing energy usage, aligning with the growing demand for energy-efficient products.

Industrial Automation

In industrial automation, the TNY268PN provides a reliable power supply for systems like sensors and programmable logic controllers (PLCs). Its dependable power management helps enhance precision and efficiency in manufacturing processes, ultimately improving productivity and reducing downtime in industrial environments.

Test Circuit of TNY268PN Switcher

Note: This test circuit is not intended for measuring current limits or output characteristics.

Energy-Saving Features of the TNY268PN Switcher

The TNY268PN Switcher includes various energy-saving features that optimize power consumption and enhance efficiency, making it a reliable and effective solution for different applications. One of its key features is line undervoltage detection, which helps stabilize voltage levels and prevent power failures, thereby contributing to energy savings. By maintaining stable operating conditions, this mechanism reduces unnecessary power usage and ensures consistent performance. In residential and commercial environments, stable voltage can prolong the lifespan of electronic components and decrease the frequency of maintenance, offering convenience for both users and technicians.

Another feature is the frequency dithering technology, which reduces electromagnetic interference (EMI) by spreading the switching frequency spectrum. This technology is highly beneficial in environments with dense electronic equipment, such as data centers or manufacturing facilities, where minimizing interference is essential for maintaining efficiency. Reducing EMI helps avoid disruptions and enables smoother integration of various electronic systems.

The auto-restart function is another beneficial feature of the TNY268PN. It protects the system during short circuits or open-loop faults by limiting power output when these issues arise. This function not only safeguards the switcher but also reduces the need for extra components, making the design simpler and more cost-effective. In applications like telecommunications, where power supply reliability is crucial, this streamlined design and reduced component count result in lower manufacturing and maintenance costs.

The TNY268PN also integrates a high-voltage MOSFET that allows direct power draw from the DRAIN pin, eliminating the need for additional bias windings. This simplification enhances efficiency and reduces energy consumption, particularly in large-scale applications such as power distribution networks. The integration results in more compact power systems, reducing physical space requirements and overall energy costs.

With its energy-saving features like line undervoltage detection, frequency dithering, auto-restart function, and high-voltage MOSFET integration, the TNY268PN Switcher provides effective power management and improved efficiency, making it a versatile and dependable choice for a variety of industries.

Datasheet PDF

TNY268PN Datasheet:

Frequently Asked Questions [FAQ]

1. What is the main application of TNY268PN?

The TNY268PN is used in various fields, such as LED lighting, consumer electronics, industrial automation, and data centers. In LED lighting, it provides stable current regulation for better efficiency and longer lifespan. In consumer electronics like chargers and power adapters, it supports energy savings. For industrial automation, it ensures consistent operation, which is useful for maintaining industrial processes. In data centers, it offers high efficiency and low operational costs, making it a reliable choice for handling and storing data.

2. Does TNY268PN require a bias winding?

No, the TNY268PN does not require a bias winding. It draws power directly from the drain pin, reducing the need for additional components. This helps simplify the design, cut costs, and increase overall reliability.

3. What is the typical power consumption of TNY268PN?

The TNY268PN typically uses less than 250mW without a bias winding and less than 50mW with a bias winding at 265VAC input. Its low power consumption makes it suitable for applications that prioritize reducing energy use.

4. What company manufactures TNY268PN?

Power Integrations, Inc. manufactures the TNY268PN. The company is known for its high-efficiency power conversion products that cater to a variety of industries.

5. What are the protection features of TNY268PN?

The TNY268PN has built-in protection features like current limiting, which prevents damage from excessive current, and thermal shutdown, which activates if the device overheats. It also includes programmable undervoltage detection to handle low supply voltage conditions effectively.