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TOP252MN
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TOP252MN

Product Overview

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

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: Overload Protection, Overvoltage Protection, Overtemperature Protection

Detailed Pin Configuration

  1. VCC: Power Supply Voltage
  2. FB: Feedback Input for Regulation Control
  3. COMP: Compensation Pin for Loop Stability
  4. CS: Current Sense Input
  5. DRAIN: High-Voltage Power MOSFET Drain Connection
  6. SOURCE: High-Voltage Power MOSFET Source Connection
  7. GND: Ground

Functional Features

  • Integrated 700 V MOSFET
  • Built-in Frequency Jittering for EMI Reduction
  • Auto-Restart Protection for Fault Conditions
  • Cycle-by-Cycle Current Limiting
  • Adjustable Output Voltage and Current Limit
  • Soft Start for Minimizing Inrush Current

Advantages and Disadvantages

Advantages

  • High Efficiency, reducing power consumption
  • Low Standby Power, minimizing energy waste
  • Wide Input Voltage Range, suitable for various applications
  • Integrated MOSFET simplifies design and reduces component count
  • Built-in protection features enhance system reliability

Disadvantages

  • Requires external components for complete power supply implementation
  • Limited output power compared to higher-end models
  • Not suitable for high-power applications

Working Principles

The TOP252MN is a switching power supply controller that utilizes a flyback topology. It operates by converting the input AC voltage to a high-frequency AC signal, which is then rectified and filtered to provide a regulated DC output voltage. The integrated MOSFET acts as a switch, controlling the energy transfer from the primary to the secondary side of the transformer. The controller regulates the output voltage by adjusting the duty cycle of the switch.

Detailed Application Field Plans

The TOP252MN is commonly used in various applications, including:

  1. Power Adapters
  2. LED Lighting
  3. Set-Top Boxes
  4. Audio/Video Equipment
  5. Industrial Power Supplies
  6. Home Appliances

Detailed and Complete Alternative Models

  1. TOP250YN: Similar functionality with different pin configuration
  2. TOP253PN: Higher output power capability
  3. TOP254EN: Enhanced protection features
  4. TOP255GN: Lower standby power consumption

These alternative models offer similar functionality to the TOP252MN but may have different specifications or additional features depending on the specific application requirements.

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Liste 10 perguntas e respostas comuns relacionadas à aplicação de TOP252MN em soluções técnicas

Sure! Here are 10 common questions and answers related to the application of TOP252MN in technical solutions:

  1. Q: What is TOP252MN? A: TOP252MN is a highly integrated offline switcher IC (integrated circuit) designed for low-power applications.

  2. Q: What are the typical applications of TOP252MN? A: TOP252MN is commonly used in power supplies for various electronic devices such as TVs, monitors, set-top boxes, and LED lighting.

  3. Q: What is the input voltage range supported by TOP252MN? A: The input voltage range of TOP252MN is typically between 85VAC and 265VAC, making it suitable for worldwide use.

  4. Q: What is the output power range that TOP252MN can handle? A: TOP252MN can handle output power ranging from a few watts up to around 100 watts, depending on the specific design and application.

  5. Q: Does TOP252MN require an external MOSFET? A: Yes, TOP252MN requires an external MOSFET to control the switching of the power supply.

  6. Q: Can TOP252MN operate in a wide temperature range? A: Yes, TOP252MN is designed to operate reliably in a wide temperature range, typically from -40°C to 150°C.

  7. Q: Is TOP252MN capable of providing multiple outputs? A: No, TOP252MN is a single-output device. If multiple outputs are required, additional circuitry or multiple TOP252MN ICs can be used.

  8. Q: What are the key protection features of TOP252MN? A: TOP252MN includes features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown to ensure safe operation.

  9. Q: Can TOP252MN be used in flyback or buck-boost converter topologies? A: Yes, TOP252MN can be used in both flyback and buck-boost converter topologies, providing flexibility in design.

  10. Q: Are there any reference designs available for TOP252MN? A: Yes, Power Integrations, the manufacturer of TOP252MN, provides various reference designs and application notes to assist designers in implementing the IC effectively.

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