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TOP253GN-TL
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TOP253GN-TL

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
  • Package: 7-Lead SMD (Surface Mount Device)
  • Essence: Switching Power Supply Controller
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 30W
  • Switching Frequency: 132 kHz to 150 kHz
  • Operating Temperature Range: -40°C to +125°C
  • Protection Features: Overload Protection, Overvoltage Protection, Overtemperature Protection

Detailed Pin Configuration

  1. VCC: Power supply input
  2. FB: Feedback pin for regulating output voltage
  3. COMP: Compensation pin for stability control
  4. CS: Current sense pin for current limit protection
  5. GND: Ground reference
  6. DRAIN: Switching transistor drain connection
  7. SOURCE: Switching transistor source connection

Functional Features

  • Primary-Side Regulation (PSR): Eliminates the need for an optocoupler and secondary-side feedback components.
  • Frequency Jittering: Reduces EMI emissions and improves system reliability.
  • Auto-Restart Protection: Automatically restarts the power supply after a fault condition is removed.
  • Cycle-by-Cycle Current Limiting: Provides accurate and reliable current protection.

Advantages and Disadvantages

Advantages: - High efficiency, reducing power consumption and heat dissipation. - Low standby power, meeting energy-saving requirements. - Wide input voltage range, suitable for various applications. - Integrated protection features ensure system safety.

Disadvantages: - Requires careful design and layout to minimize EMI emissions. - Limited output power compared to some other power management ICs.

Working Principles

TOP253GN-TL is a switching power supply controller that utilizes primary-side regulation (PSR) technology. It operates by controlling the duty cycle of the switching transistor to regulate the output voltage. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle accordingly. The compensation pin (COMP) provides stability control, ensuring proper loop response. The current sense pin (CS) detects the current flowing through the switching transistor for accurate current limit protection.

Detailed Application Field Plans

TOP253GN-TL is commonly used in various applications, including but not limited to: - AC/DC Power Supplies - LED Lighting - Industrial Controls - Home Appliances - Consumer Electronics

Alternative Models

  • TOP254GN-TL
  • TOP255GN-TL
  • TOP256GN-TL
  • TOP257GN-TL

These alternative models offer similar functionality and features, providing flexibility in choosing the most suitable option for specific applications.

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技術ソリューションにおける TOP253GN-TL の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of TOP253GN-TL in technical solutions:

  1. Q: What is TOP253GN-TL? A: TOP253GN-TL is a highly integrated offline switcher IC designed for low power AC/DC applications.

  2. Q: What are the typical applications of TOP253GN-TL? A: TOP253GN-TL is commonly used in applications such as auxiliary power supplies, battery chargers, LED lighting, and industrial controls.

  3. Q: What is the maximum output power that TOP253GN-TL can handle? A: TOP253GN-TL can handle up to 45 watts of output power.

  4. Q: Does TOP253GN-TL require an external MOSFET? A: Yes, TOP253GN-TL requires an external MOSFET for switching purposes.

  5. Q: Can TOP253GN-TL operate with both high and low line voltages? A: Yes, TOP253GN-TL is designed to operate with a wide input voltage range from 85VAC to 265VAC.

  6. Q: What are the key features of TOP253GN-TL? A: Some key features of TOP253GN-TL include primary-side regulation, frequency jittering for EMI reduction, and built-in protection features like over-temperature and over-voltage protection.

  7. Q: Is TOP253GN-TL suitable for flyback converter designs? A: Yes, TOP253GN-TL is specifically designed for flyback converter topologies.

  8. Q: Can TOP253GN-TL be used in isolated or non-isolated applications? A: TOP253GN-TL can be used in both isolated and non-isolated applications depending on the specific design requirements.

  9. Q: Does TOP253GN-TL support constant voltage (CV) and constant current (CC) modes? A: Yes, TOP253GN-TL supports both CV and CC modes of operation.

  10. Q: What are the typical efficiency levels achieved with TOP253GN-TL? A: Depending on the application and design, TOP253GN-TL can achieve high efficiency levels ranging from 80% to 90%.

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