Power Integrations
চিত্রটি উপস্থাপনা হতে পারে৷
পণ্যের বিবরণের জন্য স্পেসিফিকেশন দেখুন৷.
TOP254PN
বিস্তারিত দেখুন ডেটাশিট

TOP254PN

Product Overview

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

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 30W
  • Switching Frequency: 132 kHz
  • Operating Temperature Range: -40°C to +150°C
  • Protection Features: Overload Protection, Overvoltage Protection, Overtemperature Protection

Detailed Pin Configuration

  1. VCC: Power Supply Voltage
  2. GND: Ground
  3. FB: Feedback Pin for Voltage Regulation
  4. CS: Current Sense Pin
  5. DRAIN: Switching Transistor Drain Pin
  6. SOURCE: Switching Transistor Source Pin
  7. CONTROL: Control Pin for Soft Start and Frequency Modulation

Functional Features

  • Primary-Side Regulation (PSR): Eliminates the need for an optocoupler and secondary-side feedback components.
  • Frequency Modulation: Provides improved EMI performance.
  • Auto-Restart Protection: Ensures continuous operation by automatically restarting after a fault condition is removed.
  • Cycle-by-Cycle Current Limiting: Protects against overload conditions.

Advantages

  • High efficiency due to primary-side regulation.
  • Low standby power consumption.
  • Wide input voltage range allows for global compatibility.
  • Compact package size enables space-saving designs.
  • Robust protection features ensure reliable operation.

Disadvantages

  • Limited output power compared to higher-rated devices.
  • Requires external components for complete power supply design.
  • Not suitable for applications requiring high switching frequencies.

Working Principles

The TOP254PN is an offline switcher IC that operates in a flyback topology. It utilizes primary-side regulation (PSR) to achieve voltage regulation without the need for an optocoupler and secondary-side feedback components. The IC controls the switching transistor based on the feedback received from the FB pin, maintaining a stable output voltage. Frequency modulation is employed to improve electromagnetic interference (EMI) performance. The device also incorporates various protection features such as overload, overvoltage, and overtemperature protection.

Detailed Application Field Plans

The TOP254PN is widely used in various power management applications, including:

  1. Power Adapters
  2. LED Lighting
  3. Set-Top Boxes
  4. Audio/Video Equipment
  5. Industrial Power Supplies

Detailed and Complete Alternative Models

Some alternative models to TOP254PN include:

  1. TOP255PN
  2. TOP256PN
  3. TOP257PN
  4. TOP258PN

These models offer similar functionality and can be used as alternatives depending on specific requirements.

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প্রযুক্তিগত সমাধানে TOP254PN এর প্রয়োগ সম্পর্কিত 10টি সাধারণ প্রশ্ন ও উত্তর তালিকাভুক্ত করুন

Sure! Here are 10 common questions and answers related to the application of TOP254PN in technical solutions:

  1. Q: What is TOP254PN?
    A: TOP254PN is a highly integrated offline switcher IC (integrated circuit) designed for low-power applications.

  2. Q: What are the typical applications of TOP254PN?
    A: TOP254PN is commonly used in power supplies for appliances, LED lighting, industrial controls, and other low-power systems.

  3. Q: What is the input voltage range supported by TOP254PN?
    A: TOP254PN supports a wide input voltage range from 85VAC to 265VAC.

  4. Q: Can TOP254PN handle high-voltage spikes or surges?
    A: Yes, TOP254PN has built-in protection features to handle high-voltage spikes and surges, ensuring reliable operation.

  5. Q: Does TOP254PN require an external MOSFET?
    A: No, TOP254PN integrates a high-voltage MOSFET, eliminating the need for an external one.

  6. Q: What is the maximum output power that TOP254PN can handle?
    A: TOP254PN can handle output powers up to 30W, making it suitable for various low-power applications.

  7. Q: Is TOP254PN capable of providing constant current output?
    A: Yes, TOP254PN supports constant current output, which is useful for driving LEDs or other devices requiring a stable current.

  8. Q: Can TOP254PN operate in a wide temperature range?
    A: Yes, TOP254PN has a wide operating temperature range from -40°C to +150°C, allowing it to function reliably in different environments.

  9. Q: Does TOP254PN have any protection features?
    A: Yes, TOP254PN includes features like overvoltage protection, overcurrent protection, and thermal shutdown to safeguard the system.

  10. Q: Is TOP254PN compliant with safety standards?
    A: Yes, TOP254PN is designed to meet various safety standards such as UL, CE, and ENEC, ensuring its suitability for different applications.

Please note that these answers are general and may vary depending on the specific implementation and requirements of the technical solution.