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TOP221GN-TL
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TOP221GN-TL

Product Overview

  • Category: Integrated Circuit
  • Use: Power Management IC
  • Characteristics: High Efficiency, Low Standby Power, Overload Protection
  • Package: TO-220
  • Essence: Switching Regulator Controller
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 85V to 265V AC
  • Output Voltage Range: 5V to 24V DC
  • Switching Frequency: 132 kHz
  • Maximum Output Power: 25W
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The TOP221GN-TL has a total of 7 pins:

  1. GND: Ground pin.
  2. VCC: Supply voltage input.
  3. FB: Feedback pin for regulating the output voltage.
  4. DRAIN: High-voltage power MOSFET drain connection.
  5. SOURCE: High-voltage power MOSFET source connection.
  6. CTRL: Control pin for adjusting the switching frequency.
  7. SENSE: Current sense pin for overload protection.

Functional Features

  • High Efficiency: The TOP221GN-TL utilizes advanced control techniques to achieve high efficiency in power conversion.
  • Low Standby Power: The device has a low standby power consumption, reducing energy waste during idle periods.
  • Overload Protection: The current sense pin allows for accurate detection of overloads, triggering protection mechanisms to prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings. - Low standby power reduces wasted energy. - Overload protection ensures safe operation.

Disadvantages: - Limited input voltage range (85V to 265V AC). - Maximum output power limited to 25W.

Working Principles

The TOP221GN-TL is a switching regulator controller that operates by converting high-voltage AC input into regulated DC output. It uses a high-voltage power MOSFET to switch the input voltage at a high frequency, which is then filtered and regulated to provide a stable output voltage. The device employs various control techniques to optimize efficiency and protect against overloads.

Detailed Application Field Plans

The TOP221GN-TL is commonly used in various applications, including:

  1. Power Adapters: The device is suitable for power adapter designs, providing efficient and reliable power conversion.
  2. LED Lighting: It can be utilized in LED lighting systems, ensuring stable and efficient power supply for illumination.
  3. Industrial Equipment: The TOP221GN-TL finds application in industrial equipment, such as motor drives and control circuits, due to its high efficiency and overload protection features.

Detailed and Complete Alternative Models

  1. TOP222GN-TL: Similar to TOP221GN-TL but with a higher maximum output power of 40W.
  2. TOP223GN-TL: Similar to TOP221GN-TL but with a lower maximum output power of 15W.
  3. TOP224GN-TL: Similar to TOP221GN-TL but with additional features like adjustable current limit and soft-start function.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням TOP221GN-TL у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of TOP221GN-TL in technical solutions:

  1. Q: What is TOP221GN-TL? A: TOP221GN-TL is a highly integrated offline switcher IC designed for low power applications.

  2. Q: What are the typical applications of TOP221GN-TL? A: TOP221GN-TL is commonly used in applications such as chargers, adapters, set-top boxes, and auxiliary power supplies.

  3. Q: What is the input voltage range supported by TOP221GN-TL? A: The input voltage range supported by TOP221GN-TL is typically between 85VAC and 265VAC.

  4. Q: What is the maximum output power that can be achieved with TOP221GN-TL? A: The maximum output power depends on the specific design and operating conditions, but it is typically around 15W.

  5. Q: Does TOP221GN-TL require an external MOSFET? A: No, TOP221GN-TL integrates a high-voltage power MOSFET, eliminating the need for an external MOSFET.

  6. Q: Can TOP221GN-TL operate in continuous or discontinuous conduction mode? A: TOP221GN-TL can operate in both continuous and discontinuous conduction modes, depending on the load conditions.

  7. Q: What are the key protection features offered by TOP221GN-TL? A: TOP221GN-TL provides protection against overvoltage, overcurrent, and overtemperature conditions.

  8. Q: Is TOP221GN-TL compatible with dimming functionality? A: Yes, TOP221GN-TL supports dimming functionality through pulse frequency modulation (PFM) control.

  9. Q: What is the typical efficiency of TOP221GN-TL? A: The typical efficiency of TOP221GN-TL can reach up to 85% under normal operating conditions.

  10. Q: Are there any evaluation boards or reference designs available for TOP221GN-TL? A: Yes, Power Integrations provides evaluation boards and reference designs that can help in the application of TOP221GN-TL.

Please note that these answers are general and may vary depending on specific design considerations and requirements.