Power Integrations
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TOP242GN-TL
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TOP242GN-TL

Product Overview

  • Category: Integrated Circuit
  • Use: Power Management
  • Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
  • Package: TO-220-7C
  • Essence: Offline Switcher
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 45W
  • Frequency Range: 50Hz to 60Hz
  • Operating Temperature Range: -40°C to +150°C
  • Efficiency: Up to 89%
  • Standby Power: Less than 100mW

Detailed Pin Configuration

  1. Drain
  2. Source
  3. Feedback
  4. Ground
  5. VCC
  6. Control
  7. Sense

Functional Features

  • Primary-Side Regulation (PSR) Control
  • Built-in Frequency Jittering for EMI Reduction
  • Auto-Restart Protection for Overload and Open-Loop Faults
  • Cycle-by-Cycle Current Limiting
  • Line Under-Voltage Lockout with Hysteresis
  • Over-Temperature Protection

Advantages

  • High Efficiency Enables Energy Savings
  • Low Standby Power Reduces Power Consumption in Idle Mode
  • Wide Input Voltage Range Allows Worldwide Compatibility
  • Compact TO-220-7C Package Facilitates Easy Integration
  • Built-in Protections Enhance System Reliability

Disadvantages

  • Limited Output Power (Up to 45W)
  • Requires External Components for Complete Power Supply Design
  • Not Suitable for High-Power Applications

Working Principles

The TOP242GN-TL is an offline switcher that utilizes primary-side regulation (PSR) control. It operates by modulating the duty cycle of the internal power MOSFET to regulate the output voltage. The PSR control eliminates the need for an optocoupler and secondary-side feedback circuitry, simplifying the design and reducing costs. The device also incorporates frequency jittering to minimize electromagnetic interference (EMI) emissions.

Detailed Application Field Plans

The TOP242GN-TL is commonly used in various power management applications, including:

  1. AC-DC 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. TOP243GN-TL
  2. TOP244GN-TL
  3. TOP245GN-TL
  4. TOP246GN-TL
  5. TOP247GN-TL

These alternative models offer similar functionality and performance characteristics, providing flexibility in power supply designs.

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Orodhesha maswali na majibu 10 ya kawaida yanayohusiana na utumiaji wa TOP242GN-TL katika suluhu za kiufundi

Sure! Here are 10 common questions and answers related to the application of TOP242GN-TL in technical solutions:

  1. Q: What is TOP242GN-TL? A: TOP242GN-TL is a highly integrated offline switcher IC (integrated circuit) designed for low power applications.

  2. Q: What are the typical applications of TOP242GN-TL? A: TOP242GN-TL is commonly used in various power supply applications such as adapters, chargers, LED lighting, and industrial controls.

  3. Q: What is the maximum output power that TOP242GN-TL can handle? A: TOP242GN-TL can handle output powers up to 100 watts depending on the design and external components used.

  4. Q: What is the input voltage range supported by TOP242GN-TL? A: The input voltage range of TOP242GN-TL is typically from 85VAC to 265VAC, making it suitable for worldwide use.

  5. Q: Can TOP242GN-TL operate with a DC input voltage? A: Yes, TOP242GN-TL can also operate with a DC input voltage ranging from 100VDC to 400VDC.

  6. Q: Does TOP242GN-TL require an external MOSFET for operation? A: No, TOP242GN-TL integrates a high-voltage power MOSFET, eliminating the need for an external one.

  7. Q: What are the key features of TOP242GN-TL? A: Some key features include primary-side regulation, frequency jittering for EMI reduction, cycle-by-cycle current limit, and thermal shutdown protection.

  8. Q: How does primary-side regulation work in TOP242GN-TL? A: Primary-side regulation allows the control of output voltage without the need for an optocoupler, simplifying the design and reducing cost.

  9. Q: Can TOP242GN-TL provide multiple outputs? A: Yes, TOP242GN-TL can be used to design power supplies with multiple outputs by using external components such as transformers and rectifiers.

  10. Q: Are there any evaluation boards or reference designs available for TOP242GN-TL? A: Yes, Power Integrations, the manufacturer of TOP242GN-TL, provides evaluation boards and reference designs that can help in designing power supplies using this IC.

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