Power Integrations
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TOP264KG
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TOP264KG

Product Overview

Category: Integrated Circuits (ICs)

Use: Power Management IC

Characteristics: - High efficiency - Low standby power - Wide input voltage range - Over-temperature protection - Overload protection

Package: TO-220-7L

Essence: The TOP264KG is a power management integrated circuit designed for offline switch mode power supplies.

Packaging/Quantity: The TOP264KG is available in a TO-220-7L package and is typically sold in reels of 500 units.

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 30W
  • Switching Frequency: 132 kHz
  • Operating Temperature Range: -40°C to +150°C
  • Efficiency: Up to 88%
  • Standby Power Consumption: Less than 100mW

Pin Configuration

The TOP264KG has the following pin configuration:

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

Functional Features

  • Primary-side control eliminates the need for an optocoupler
  • Built-in frequency jittering for reduced EMI emissions
  • Auto-restart protection for enhanced system reliability
  • Constant current limit for overload protection
  • Thermal shutdown protection prevents overheating

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide input voltage range allows for universal compatibility - Integrated protection features enhance system reliability - Primary-side control simplifies circuit design - Compact TO-220-7L package facilitates easy integration

Disadvantages: - Limited output power compared to higher-rated devices - Higher cost compared to non-integrated solutions - Requires careful thermal management due to high operating temperature range

Working Principles

The TOP264KG is based on a flyback topology, where energy is stored in the transformer during the switch-on period and transferred to the output during the switch-off period. The primary-side control eliminates the need for an optocoupler, reducing component count and cost. The integrated circuit regulates the output voltage by adjusting the duty cycle of the switching transistor.

Detailed Application Field Plans

The TOP264KG is commonly used in various applications, including:

  1. AC-DC power supplies for consumer electronics
  2. LED lighting drivers
  3. Industrial power supplies
  4. Battery chargers
  5. Home appliances

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the TOP264KG are:

  1. TOP256EN: Similar specifications and features, but with a lower output power rating.
  2. LNK364PN: Integrated offline switcher with similar characteristics, but in a different package.
  3. TNY278PN: Low-power integrated offline switcher suitable for low-cost applications.

These alternative models offer different trade-offs in terms of performance, cost, and package options, allowing designers to choose the most suitable solution for their specific requirements.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق TOP264KG في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of TOP264KG in technical solutions:

  1. Q: What is TOP264KG? A: TOP264KG is a highly integrated offline switcher IC (integrated circuit) designed for low power applications.

  2. Q: What are the typical applications of TOP264KG? A: TOP264KG is commonly used in various low-power applications such as auxiliary power supplies, battery chargers, LED lighting, and industrial controls.

  3. Q: What is the input voltage range supported by TOP264KG? A: The input voltage range of TOP264KG typically spans from 85VAC to 265VAC, making it suitable for worldwide use.

  4. Q: What is the output power range that TOP264KG can handle? A: TOP264KG can handle output power ranging from a few watts up to around 50 watts, depending on the specific application and design considerations.

  5. Q: Does TOP264KG require an external MOSFET? A: No, TOP264KG integrates a high-voltage power MOSFET internally, eliminating the need for an external MOSFET in most applications.

  6. Q: Can TOP264KG operate in continuous or discontinuous mode? A: TOP264KG can operate in both continuous and discontinuous conduction modes, providing flexibility based on the load conditions.

  7. Q: Is TOP264KG capable of providing multiple outputs? A: Yes, TOP264KG supports multiple outputs through the use of external components such as transformers and rectifiers.

  8. Q: What are the key protection features offered by TOP264KG? A: TOP264KG incorporates various protection features like overvoltage protection (OVP), overload protection (OLP), and thermal shutdown to ensure safe operation.

  9. Q: Can TOP264KG be used in high-temperature environments? A: Yes, TOP264KG is designed to operate reliably in high-temperature environments, with a wide operating temperature range and built-in thermal protection.

  10. Q: Are there any design considerations when using TOP264KG? A: Yes, some important design considerations include proper PCB layout, component selection, and adherence to the manufacturer's application notes for optimal performance and reliability.

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