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TOP255GN-TL
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TOP255GN-TL

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
  • Package: TO-220-7L
  • Essence: Switching Power Supply Controller
  • Packaging/Quantity: Tape and Reel / 2,500 pieces per reel

Specifications

  • Input Voltage Range: 85V to 265V AC
  • Output Power: Up to 30W
  • Frequency Range: 50Hz to 60Hz
  • Operating Temperature Range: -40°C to +125°C
  • Efficiency: Up to 90%
  • Standby Power: Less than 100mW

Detailed Pin Configuration

  1. VCC: Power supply input
  2. GND: Ground reference
  3. FB: Feedback pin for voltage regulation
  4. COMP: Compensation pin for stability control
  5. CS: Current sense pin for current regulation
  6. DRAIN: Switching power MOSFET drain pin
  7. SOURCE: Switching power MOSFET source pin

Functional Features

  • Primary-Side Regulation (PSR) Control: Eliminates the need for an optocoupler and secondary-side feedback circuitry.
  • Auto-restart Protection: Ensures continuous operation by automatically restarting the power supply in case of a fault condition.
  • Frequency Jittering: Reduces EMI emissions by spreading the switching frequency spectrum.
  • Cycle-by-Cycle Current Limiting: Provides accurate current regulation and protects against overcurrent conditions.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption and lower operating costs. - Wide input voltage range allows for universal compatibility. - Compact TO-220-7L package enables easy integration into various applications. - Primary-side regulation simplifies the design and reduces component count.

Disadvantages: - Limited output power of up to 30W may not be suitable for high-power applications. - Operating temperature range may restrict usage in extreme environments.

Working Principles

The TOP255GN-TL is a switching power supply controller that utilizes primary-side regulation (PSR) control. It operates by modulating the duty cycle of the switching power MOSFET based on the feedback received from the FB pin. This allows for precise voltage regulation without the need for an optocoupler and secondary-side feedback circuitry. The controller also incorporates various protection features, such as auto-restart, frequency jittering, and cycle-by-cycle current limiting, to ensure safe and reliable operation.

Detailed Application Field Plans

The TOP255GN-TL is widely used in various power management applications, including:

  1. AC/DC Adapters: Provides efficient power conversion for portable electronic devices.
  2. LED Lighting: Enables high-efficiency LED driver circuits for residential, commercial, and industrial lighting applications.
  3. Home Appliances: Facilitates power supply control in appliances like refrigerators, air conditioners, and washing machines.
  4. Industrial Equipment: Supports power management in industrial automation systems, motor drives, and control panels.

Detailed and Complete Alternative Models

  1. TOP256EN-TL: Similar functionality with higher output power capability (up to 50W).
  2. TOP257EN-TL: Enhanced version with additional features like line under-voltage lockout and thermal shutdown protection.
  3. TOP258PN-TL: Integrated power factor correction (PFC) controller for improved power quality.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät TOP255GN-TL :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of TOP255GN-TL in technical solutions:

  1. Q: What is TOP255GN-TL? A: TOP255GN-TL is a highly integrated offline switcher IC designed for low-power applications, offering high efficiency and excellent performance.

  2. Q: What are the typical applications of TOP255GN-TL? A: TOP255GN-TL is commonly used in various low-power applications such as power supplies for appliances, LED lighting, standby power, and battery chargers.

  3. Q: What is the maximum output power that TOP255GN-TL can handle? A: TOP255GN-TL can handle a maximum output power of up to 30 watts, making it suitable for many low-power applications.

  4. Q: Does TOP255GN-TL support wide input voltage range? A: Yes, TOP255GN-TL supports a wide input voltage range from 85VAC to 265VAC, making it compatible with different mains voltages worldwide.

  5. Q: Can TOP255GN-TL operate in continuous or discontinuous conduction mode? A: TOP255GN-TL can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), providing flexibility in design.

  6. Q: Does TOP255GN-TL have built-in protection features? A: Yes, TOP255GN-TL incorporates various protection features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.

  7. Q: What is the efficiency of TOP255GN-TL? A: TOP255GN-TL offers high efficiency, typically above 85%, which helps to minimize power losses and improve overall system performance.

  8. Q: Can TOP255GN-TL be used in dimmable LED lighting applications? A: Yes, TOP255GN-TL can be used in dimmable LED lighting applications by integrating external components for dimming control.

  9. Q: Does TOP255GN-TL require an external heatsink for cooling? A: The need for an external heatsink depends on the specific application and power dissipation requirements. In some cases, a heatsink may be necessary.

  10. Q: Is there any evaluation board available for TOP255GN-TL? A: Yes, Power Integrations provides an evaluation board for TOP255GN-TL, which allows engineers to quickly prototype and test their designs.

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