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TOP248YN
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TOP248YN

Product Overview

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

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 48W
  • Frequency Range: 50Hz to 60Hz
  • Operating Temperature Range: -40°C to +125°C
  • Efficiency: Up to 88%
  • Standby Power: Less than 100mW

Detailed Pin Configuration

  1. VCC: Supply Voltage
  2. FB: Feedback Pin
  3. GND: Ground
  4. DRAIN: Power MOSFET Drain Connection
  5. SOURCE: Power MOSFET Source Connection
  6. COMP: Compensation Pin
  7. SYNC/SD: Synchronization or Shutdown Control Pin

Functional Features

  • Integrated 700V Power MOSFET
  • Frequency-Jittering for EMI Reduction
  • Auto-Restart Protection
  • Over-Temperature Protection
  • Cycle-by-Cycle Current Limiting
  • Adjustable Output Voltage

Advantages and Disadvantages

Advantages

  • High Efficiency leads to reduced power consumption
  • Wide Input Voltage Range allows for global compatibility
  • Compact package size enables space-saving designs
  • Auto-Restart Protection ensures continuous operation after fault conditions

Disadvantages

  • Limited output power of up to 48W
  • Requires external components for complete power supply design
  • Not suitable for high-power applications

Working Principles

TOP248YN is an offline switcher IC that provides power management functionality. It operates by converting the input AC voltage into a regulated DC output voltage. The integrated power MOSFET and control circuitry enable efficient power conversion with minimal standby power consumption. The device utilizes frequency-jittering techniques to reduce electromagnetic interference (EMI) emissions. It also incorporates various protection features such as over-temperature and cycle-by-cycle current limiting to ensure safe and reliable operation.

Detailed Application Field Plans

TOP248YN is commonly used in various applications, including:

  1. Power Adapters
  2. LED Lighting
  3. Industrial Power Supplies
  4. Home Appliances
  5. Consumer Electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered for similar applications are:

  1. TOP249YN
  2. TOP250YN
  3. TOP252YN
  4. LNK364PN
  5. LNK362PN

These models offer similar functionality and characteristics, providing flexibility in design choices.

In conclusion, TOP248YN is a versatile offline switcher IC that offers high efficiency, low standby power, and wide input voltage range. Its compact package and integrated features make it suitable for various power management applications. However, designers should consider the limited output power and the need for additional components when using this IC.

技術ソリューションにおける TOP248YN の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of TOP248YN in technical solutions:

  1. Q: What is TOP248YN? A: TOP248YN is a high-performance integrated circuit (IC) that combines a power switch, control circuitry, and protection features for offline power supply applications.

  2. Q: What are the typical applications of TOP248YN? A: TOP248YN is commonly used in various applications such as power adapters, chargers, LED lighting, industrial power supplies, and audio/video equipment.

  3. Q: What is the maximum input voltage supported by TOP248YN? A: The maximum input voltage supported by TOP248YN is typically around 700V.

  4. Q: How much output power can TOP248YN handle? A: TOP248YN can handle output power ranging from a few watts to several tens of watts, depending on the specific design and external components used.

  5. Q: Does TOP248YN require an external heatsink? A: Yes, TOP248YN usually requires an external heatsink to dissipate heat generated during operation, especially when handling higher power levels.

  6. Q: Can TOP248YN operate in continuous or discontinuous conduction mode? A: TOP248YN can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), depending on the load conditions and design requirements.

  7. Q: What are the key protection features offered by TOP248YN? A: TOP248YN provides protection against overvoltage, overcurrent, and overtemperature conditions, ensuring safe and reliable operation of the power supply.

  8. Q: Is TOP248YN compatible with both fixed-frequency and frequency-modulated operation? A: Yes, TOP248YN supports both fixed-frequency and frequency-modulated operation, allowing flexibility in power supply design.

  9. Q: Can TOP248YN be used in flyback or forward converter topologies? A: Yes, TOP248YN is suitable for both flyback and forward converter topologies, making it versatile for various power supply designs.

  10. Q: Are there any recommended reference designs or application notes available for TOP248YN? A: Yes, the manufacturer of TOP248YN provides reference designs and application notes that offer detailed guidelines and recommendations for using the IC in different applications.