Power Integrations
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TOP252MG
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TOP252MG

Product Overview

  • Category: Integrated Circuit
  • 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 100 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 Input
  2. GND: Ground
  3. FB: Feedback Pin 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. CT: Current Sense and Oscillator Timing Capacitor Connection

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 leading to energy savings
  • Low standby power consumption
  • Simplified design due to primary-side control
  • Reduced component count and cost
  • Robust protection features ensure system reliability

Disadvantages

  • Limited output power compared to some other models
  • Requires careful consideration of thermal management due to high operating temperature range

Working Principles

The TOP252MG is a primary-side regulated switcher that utilizes a flyback topology to provide power conversion. It operates by controlling the duty cycle of the internal power MOSFET to regulate the output voltage. The integrated high-voltage power MOSFET eliminates the need for an external switch, reducing component count and simplifying the design.

Detailed Application Field Plans

  • Offline AC-DC power supplies
  • LED lighting applications
  • Consumer electronics
  • Industrial equipment
  • Telecommunications

Detailed and Complete Alternative Models

  1. TOP250YN: Similar specifications and features, different package (8-Lead PDIP)
  2. TOP253PN: Similar specifications and features, different package (7-Lead TO-220)
  3. TOP254EN: Higher output power capability, similar specifications and features (7-Lead TO-220)

This entry provides an overview of the TOP252MG integrated circuit, including its category, use, characteristics, package, and specifications. It also includes detailed information on pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.

Orodhesha maswali na majibu 10 ya kawaida yanayohusiana na utumiaji wa TOP252MG katika suluhu za kiufundi

Sure! Here are 10 common questions and answers related to the application of TOP252MG in technical solutions:

  1. Q: What is TOP252MG? A: TOP252MG is a highly integrated offline switcher IC (integrated circuit) designed for low-power applications.

  2. Q: What are the typical applications of TOP252MG? A: TOP252MG 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 TOP252MG? A: The input voltage range of TOP252MG is typically between 85VAC and 265VAC, making it suitable for worldwide use.

  4. Q: What is the output power range that TOP252MG can handle? A: TOP252MG can handle output power ranging from a few watts up to around 100 watts, depending on the specific application and design.

  5. Q: Does TOP252MG require an external MOSFET? A: No, TOP252MG integrates a high-voltage power MOSFET, eliminating the need for an external MOSFET in most applications.

  6. Q: Can TOP252MG operate in continuous or discontinuous conduction mode? A: TOP252MG can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), providing flexibility in different load conditions.

  7. Q: What are the key protection features offered by TOP252MG? A: TOP252MG includes features like overvoltage protection (OVP), overload protection (OLP), and thermal shutdown to ensure safe operation and protect the system.

  8. Q: Is TOP252MG compatible with power factor correction (PFC) circuits? A: Yes, TOP252MG can be easily combined with external components to implement power factor correction (PFC) functionality in the power supply design.

  9. Q: Does TOP252MG support frequency jittering for EMI reduction? A: Yes, TOP252MG incorporates frequency jittering to minimize electromagnetic interference (EMI) emissions, helping to meet regulatory standards.

  10. Q: Are there any evaluation boards or reference designs available for TOP252MG? A: Yes, Power Integrations, the manufacturer of TOP252MG, provides evaluation boards and reference designs that can help engineers quickly prototype and develop their applications.

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