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TOP262EN
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TOP262EN

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-performance offline switcher, energy-efficient, compact design
  • Package: TO-220-7L
  • Essence: Power Integrations' TOPSwitch series
  • Packaging/Quantity: Available in reels of 500 units

Specifications

  • Input Voltage Range: 85 VAC to 265 VAC
  • Output Power: Up to 30 W
  • Frequency Range: 50 kHz to 130 kHz
  • Operating Temperature Range: -40°C to +150°C
  • Efficiency: Up to 88%
  • Protection Features: Over-temperature, over-voltage, and over-current protection

Detailed Pin Configuration

The TOP262EN IC has the following pin configuration:

  1. Drain
  2. Source
  3. Control
  4. Feedback
  5. Ground
  6. Bias
  7. Output

Functional Features

  • Integrated high-voltage power MOSFET
  • Frequency jittering for reduced EMI
  • Auto-restart protection for fault conditions
  • Built-in soft-start for controlled startup
  • Cycle-by-cycle current limit

Advantages and Disadvantages

Advantages

  • High efficiency leading to energy savings
  • Compact design suitable for space-constrained applications
  • Wide input voltage range for universal compatibility
  • Robust protection features ensure reliable operation
  • Cost-effective solution for power management needs

Disadvantages

  • Limited output power compared to higher-rated devices
  • Requires external components for complete power supply implementation
  • Not suitable for high-power applications above 30 W

Working Principles

The TOP262EN is a high-performance offline switcher that utilizes a flyback topology to convert AC input voltage into regulated DC output voltage. It integrates a high-voltage power MOSFET, control circuitry, and protection features into a single package. The IC operates by switching the MOSFET on and off at a high frequency, which allows for efficient power conversion. The control circuitry ensures stable output voltage regulation and provides various protection mechanisms to safeguard against fault conditions.

Detailed Application Field Plans

The TOP262EN is commonly used in various power management applications, including:

  1. AC-DC power supplies for consumer electronics
  2. LED lighting systems
  3. Industrial power equipment
  4. Home appliances
  5. Battery chargers
  6. Audio amplifiers

Its compact size, high efficiency, and reliable performance make it suitable for a wide range of applications.

Detailed and Complete Alternative Models

Power Integrations offers a range of alternative models within the TOPSwitch series that cater to different power requirements and specifications. Some notable alternatives to the TOP262EN include:

  1. TOP249YN: Higher output power capability (up to 50 W)
  2. TOP258PN: Enhanced protection features and higher efficiency
  3. TOP255PN: Lower output power capability (up to 15 W) for low-power applications

These alternative models provide flexibility in choosing the most suitable IC based on specific application needs.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät TOP262EN :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of TOP262EN in technical solutions:

  1. Q: What is TOP262EN? A: TOP262EN is a highly integrated offline switcher IC (integrated circuit) designed for low-power applications.

  2. Q: What are the typical applications of TOP262EN? A: TOP262EN is commonly used in power supply designs for various electronic devices such as TVs, monitors, set-top boxes, and LED lighting.

  3. Q: What is the input voltage range supported by TOP262EN? A: TOP262EN supports a wide input voltage range typically from 85V AC to 265V AC.

  4. Q: What is the maximum output power that can be achieved with TOP262EN? A: The maximum output power depends on the specific design and external components used, but it can typically reach up to 30W.

  5. Q: Does TOP262EN require an external MOSFET? A: Yes, TOP262EN requires an external MOSFET to handle the switching of the power supply.

  6. Q: Can TOP262EN operate in continuous or discontinuous conduction mode? A: TOP262EN can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), depending on the design requirements.

  7. Q: What are the key features of TOP262EN? A: Some key features of TOP262EN include built-in frequency jittering for reduced EMI, cycle-by-cycle current limit, and auto-restart protection.

  8. Q: How does TOP262EN provide overvoltage protection? A: TOP262EN has an internal overvoltage protection (OVP) circuit that shuts down the power supply if the output voltage exceeds a certain threshold.

  9. Q: Can TOP262EN be used in flyback or buck-boost converter topologies? A: TOP262EN is primarily designed for flyback converter topologies, but it can also be used in buck-boost configurations with appropriate external components.

  10. Q: Are there any evaluation boards or reference designs available for TOP262EN? A: Yes, Power Integrations, the manufacturer of TOP262EN, provides evaluation boards and reference designs that can help in the development and testing of power supply solutions using TOP262EN.

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