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TOP253PN
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TOP253PN

Product Overview

  • Category: Integrated Circuit
  • Use: Power Management
  • Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
  • Package: DIP-8
  • 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 +125°C
  • Efficiency: Up to 88%
  • Standby Power: Less than 100mW

Detailed Pin Configuration

  1. VCC: Power Supply Voltage
  2. FB: Feedback Pin for Output Regulation
  3. GND: Ground
  4. COMP: Compensation Pin for Loop Stability
  5. CS: Current Sense Pin
  6. DRAIN: High-Voltage Power MOSFET Drain Connection
  7. SOURCE: High-Voltage Power MOSFET Source Connection
  8. NC: No Connection

Functional Features

  • Integrated 700V Power MOSFET
  • Built-in Frequency Jittering for EMI Reduction
  • Auto-Restart Protection for Overload and Short-Circuit Conditions
  • Cycle-by-Cycle Current Limiting
  • Line Under-Voltage Lockout with Hysteresis
  • Over-Temperature Protection

Advantages and Disadvantages

Advantages

  • High Efficiency leads to reduced power consumption
  • Wide Input Voltage Range allows for universal compatibility
  • Compact DIP-8 package enables easy integration into various applications
  • Auto-Restart Protection ensures system reliability
  • Built-in Frequency Jittering reduces electromagnetic interference (EMI)

Disadvantages

  • Limited output power of up to 30W
  • Requires external components for complete power management solution

Working Principles

TOP253PN is an offline switcher that utilizes a flyback topology to convert high-voltage AC input into low-voltage DC output. It incorporates a high-voltage power MOSFET, which enables efficient power conversion. The integrated control circuitry regulates the output voltage by adjusting the duty cycle of the switching waveform. The device operates at a fixed switching frequency of 132 kHz, ensuring stable and reliable performance.

Detailed Application Field Plans

TOP253PN finds applications in various power management systems, including but not limited to:

  1. AC-DC Adapters
  2. LED Lighting
  3. Set-Top Boxes
  4. Audio Amplifiers
  5. Industrial Power Supplies
  6. Home Appliances

Detailed and Complete Alternative Models

  1. TOP254PN: Similar specifications and features, with higher output power capability.
  2. TOP255PN: Lower output power capability, suitable for low-power applications.
  3. TOP256PN: Higher output power capability, suitable for high-power applications.
  4. TOP257PN: Enhanced protection features, ideal for rugged environments.

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

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням TOP253PN у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of TOP253PN in technical solutions:

  1. Q: What is TOP253PN? A: TOP253PN is a high-performance offline switcher IC (integrated circuit) designed for power supply applications.

  2. Q: What are the key features of TOP253PN? A: The key features of TOP253PN include primary-side regulation, integrated MOSFET, frequency jittering, and comprehensive protection features.

  3. Q: What is primary-side regulation? A: Primary-side regulation refers to the control of output voltage directly on the primary side of the transformer, eliminating the need for an optocoupler or secondary feedback circuitry.

  4. Q: How does TOP253PN ensure stable and efficient power supply? A: TOP253PN utilizes frequency jittering to reduce EMI emissions and improve efficiency, while also providing accurate voltage regulation.

  5. Q: What are the typical applications of TOP253PN? A: TOP253PN is commonly used in applications such as AC/DC power supplies, LED lighting, industrial controls, and consumer electronics.

  6. Q: Can TOP253PN handle different input voltages? A: Yes, TOP253PN can operate with a wide input voltage range, typically from 85VAC to 265VAC.

  7. Q: Does TOP253PN offer protection features? A: Yes, TOP253PN includes various protection features like over-temperature protection, over-voltage protection, and over-current protection.

  8. Q: What is the maximum output power that TOP253PN can handle? A: TOP253PN can handle output power up to 45 watts, depending on the specific application and design considerations.

  9. Q: Is TOP253PN suitable for high-reliability applications? A: Yes, TOP253PN is designed for high reliability and offers features like auto-restart after a fault condition and built-in thermal shutdown.

  10. Q: Are there any reference designs or application notes available for TOP253PN? A: Yes, Power Integrations, the manufacturer of TOP253PN, provides reference designs and application notes to assist in the implementation of the IC in various technical solutions.

Please note that the answers provided here are general and may vary depending on specific design requirements and application scenarios.