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TOP252GN
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TOP252GN

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
  • Package: 7-Lead TO-220
  • Essence: Switching Power Supply Controller
  • Packaging/Quantity: Tube/50 pieces per tube

Specifications

  • Input Voltage Range: 85 VAC to 265 VAC
  • Output Power: Up to 45 W
  • Switching Frequency: 132 kHz to 150 kHz
  • Operating Temperature Range: -40°C to +125°C
  • Protection Features: Overvoltage Protection, Overcurrent Protection, Thermal Shutdown

Detailed Pin Configuration

  1. VCC: Power Supply Voltage Input
  2. GND: Ground
  3. FB: Feedback Input for Output Voltage Regulation
  4. COMP: Compensation Pin for Loop Stability
  5. DRAIN: High-Voltage Power MOSFET Drain Connection
  6. SOURCE: High-Voltage Power MOSFET Source Connection
  7. RT/CT: Timing Resistor and Capacitor Connection for Switching Frequency Control

Functional Features

  • Integrated high-voltage power MOSFET
  • Primary-side control eliminates opto-coupler and secondary-side feedback components
  • Auto-restart protection for fault conditions
  • Frequency jittering for reduced EMI
  • Built-in soft-start for controlled startup
  • Cycle-by-cycle current limit for overcurrent protection

Advantages

  • High efficiency conversion
  • Low standby power consumption
  • Simplified design with primary-side control
  • Wide input voltage range for universal applications
  • Robust protection features ensure system reliability

Disadvantages

  • Limited output power compared to higher-rated controllers
  • Requires external components for specific applications
  • Not suitable for high-frequency applications

Working Principles

The TOP252GN is a primary-side control switching power supply controller. It integrates a high-voltage power MOSFET and eliminates the need for an opto-coupler and secondary-side feedback components. The controller operates by regulating the duty cycle of the power MOSFET to maintain the desired output voltage. It utilizes frequency jittering and soft-start techniques to reduce electromagnetic interference (EMI) and ensure controlled startup. The cycle-by-cycle current limit provides overcurrent protection.

Detailed Application Field Plans

  • AC/DC Power Supplies
  • LED Lighting
  • Home Appliances
  • Industrial Equipment
  • Consumer Electronics

Detailed and Complete Alternative Models

  1. TOP250YN
  2. TOP253YN
  3. TOP254YN
  4. TOP255YN

These alternative models are similar in functionality and characteristics but may have different specifications or package options.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av TOP252GN i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of TOP252GN in technical solutions:

  1. Q: What is TOP252GN?
    A: TOP252GN is a high-performance integrated switcher used for offline power supplies.

  2. Q: What are the typical applications of TOP252GN?
    A: TOP252GN is commonly used in applications such as LED lighting, industrial power supplies, and consumer electronics.

  3. Q: What is the input voltage range supported by TOP252GN?
    A: The input voltage range of TOP252GN is typically between 85VAC and 265VAC.

  4. Q: What is the output power range that TOP252GN can handle?
    A: TOP252GN can handle output power ranging from a few watts up to around 100 watts.

  5. Q: Does TOP252GN require an external MOSFET?
    A: Yes, TOP252GN requires an external MOSFET to function properly.

  6. Q: Can TOP252GN operate in a wide temperature range?
    A: Yes, TOP252GN is designed to operate in a wide temperature range, typically from -40°C to 150°C.

  7. Q: Is TOP252GN suitable for flyback converter designs?
    A: Yes, TOP252GN is specifically designed for flyback converter applications.

  8. Q: Does TOP252GN have built-in protection features?
    A: Yes, TOP252GN incorporates various protection features like overvoltage protection, overcurrent protection, and thermal shutdown.

  9. Q: Can TOP252GN be used in both isolated and non-isolated power supply designs?
    A: Yes, TOP252GN can be used in both isolated and non-isolated power supply designs depending on the application requirements.

  10. Q: Are there any reference designs available for TOP252GN?
    A: Yes, Power Integrations, the manufacturer of TOP252GN, provides reference designs and application notes to assist in the implementation of TOP252GN in various technical solutions.

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