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TOP248R-TL
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TOP248R-TL

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-performance offline switcher, primary-side regulation (PSR), integrated 700V MOSFET, frequency jittering for low EMI, auto-restart protection, etc.
  • Package: TO-220-7C
  • Essence: Offline Switcher IC
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 48W
  • Switching Frequency: 132kHz
  • Operating Temperature Range: -40°C to +150°C
  • Protection Features: Overload protection, overvoltage protection, thermal shutdown, etc.

Detailed Pin Configuration

The TOP248R-TL IC has the following pin configuration:

  1. VCC: Power supply voltage input
  2. Bypass: Connect a capacitor to ground for noise reduction
  3. Drain: High-voltage power MOSFET drain connection
  4. Feedback: Provides feedback control for output voltage regulation
  5. Source: Power MOSFET source connection
  6. Control: Provides control signals for switching operation
  7. Ground: Common ground reference

Functional Features

  • Primary-side regulation (PSR) eliminates the need for an optocoupler or secondary-side feedback circuitry
  • Integrated 700V MOSFET allows for high-voltage applications
  • Frequency jittering reduces electromagnetic interference (EMI)
  • Auto-restart protection ensures safe operation in fault conditions
  • Built-in protection features safeguard against overload, overvoltage, and thermal issues

Advantages and Disadvantages

Advantages: - Simplified design due to primary-side regulation - High-voltage capability with integrated MOSFET - Low EMI emissions with frequency jittering - Enhanced safety with auto-restart protection

Disadvantages: - Limited output power (up to 48W) - Relatively high operating temperature range (-40°C to +150°C)

Working Principles

The TOP248R-TL is an offline switcher IC that operates on the primary side of the power supply. It utilizes primary-side regulation (PSR) to control the output voltage without the need for an optocoupler or secondary-side feedback circuitry. The integrated 700V MOSFET allows for efficient switching and high-voltage applications. Frequency jittering is employed to reduce electromagnetic interference (EMI). In case of fault conditions, the auto-restart protection feature ensures safe operation.

Detailed Application Field Plans

The TOP248R-TL is commonly used in various power management applications, including:

  1. AC/DC power supplies
  2. LED lighting systems
  3. Industrial controls
  4. Home appliances
  5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the TOP248R-TL include:

  1. TOP249R-TL: Similar features but higher output power capability
  2. TOP250R-TL: Lower output power capability but wider operating temperature range
  3. TOP257R-TL: Different pin configuration but similar functionality
  4. TOP243R-TL: Lower input voltage range but lower cost option

(Note: This list is not exhaustive and other alternatives may exist.)

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van TOP248R-TL in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of TOP248R-TL in technical solutions:

  1. Q: What is TOP248R-TL? A: TOP248R-TL is a high-performance, offline switcher IC (integrated circuit) designed for use in power supply applications.

  2. Q: What is the input voltage range for TOP248R-TL? A: The input voltage range for TOP248R-TL is typically between 85VAC and 265VAC.

  3. Q: What is the output power capability of TOP248R-TL? A: TOP248R-TL can deliver up to 48W of output power, depending on the specific application and design.

  4. Q: Can TOP248R-TL be used in both flyback and forward converter topologies? A: Yes, TOP248R-TL can be used in both flyback and forward converter topologies, providing flexibility in design choices.

  5. Q: Does TOP248R-TL have built-in protection features? A: Yes, TOP248R-TL incorporates various protection features such as overvoltage protection, overload protection, and thermal shutdown.

  6. Q: What is the operating frequency range of TOP248R-TL? A: The operating frequency range of TOP248R-TL is typically between 30kHz and 500kHz, allowing for efficient power conversion.

  7. Q: Can TOP248R-TL operate in continuous or discontinuous mode? A: TOP248R-TL can operate in both continuous and discontinuous mode, depending on the specific load conditions and design requirements.

  8. Q: Is TOP248R-TL suitable for universal input power supplies? A: Yes, TOP248R-TL is designed to work with a wide input voltage range, making it suitable for universal input power supply applications.

  9. Q: What are the typical efficiency levels of TOP248R-TL? A: TOP248R-TL can achieve high efficiency levels, typically above 85%, when properly designed and implemented.

  10. Q: Are there any application notes or reference designs available for TOP248R-TL? A: Yes, the manufacturer provides application notes and reference designs that can help in the successful implementation of TOP248R-TL in various technical solutions.

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