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TOP258EN
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TOP258EN

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

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

Package: TO-220

Essence: The TOP258EN is a high-performance power management IC designed for various applications requiring efficient power conversion.

Packaging/Quantity: The TOP258EN is available in a TO-220 package and is typically sold in reels of 500 units.

Specifications

  • Input Voltage Range: 85V to 265V AC
  • Output Power: Up to 25W
  • Switching Frequency: 132 kHz
  • Operating Temperature Range: -40°C to +150°C
  • Efficiency: Up to 90%
  • Standby Power Consumption: Less than 100mW

Detailed Pin Configuration

The TOP258EN has the following pin configuration:

  1. Drain (D)
  2. Source (S)
  3. Feedback (FB)
  4. Control (C)
  5. Ground (GND)
  6. Output (O)
  7. Input (I)
  8. Auxiliary Winding (AW)

Functional Features

  • Primary-side control eliminates the need for an optocoupler or secondary-side feedback circuitry.
  • Auto-restart feature ensures continuous operation even in the event of a fault condition.
  • Frequency jittering reduces EMI emissions.
  • Built-in protection features such as over-temperature, overload, and short-circuit protection enhance system reliability.
  • Soft-start limits inrush current during startup.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption and heat dissipation. - Wide input voltage range allows for universal compatibility. - Integrated protection features enhance system reliability. - Primary-side control simplifies circuit design and reduces component count.

Disadvantages: - Limited output power compared to some other power management ICs. - Higher cost compared to basic linear regulators.

Working Principles

The TOP258EN utilizes primary-side control, where the control circuitry is powered directly from the input voltage. This eliminates the need for an optocoupler or secondary-side feedback circuitry, reducing component count and improving system reliability. The IC regulates the output voltage by adjusting the duty cycle of the internal power switch based on the feedback signal.

Detailed Application Field Plans

The TOP258EN is widely used in various applications, including but not limited to: 1. AC/DC power supplies 2. LED lighting 3. Industrial controls 4. Home appliances 5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the TOP258EN include: 1. TOP256EN 2. TOP257EN 3. TOP259EN 4. TNY278PN 5. LNK364PN

These alternative models offer similar functionality and can be considered as replacements depending on specific requirements.

In conclusion, the TOP258EN is a high-performance power management IC that offers high efficiency, wide input voltage range, and integrated protection features. Its primary-side control and compact TO-220 package make it suitable for various applications in different industries.

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de TOP258EN en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of TOP258EN in technical solutions:

  1. Q: What is TOP258EN? A: TOP258EN is a high-performance offline switcher IC (integrated circuit) designed for power supply applications.

  2. Q: What are the typical applications of TOP258EN? A: TOP258EN is commonly used in various applications such as LED lighting, industrial power supplies, consumer electronics, and auxiliary power supplies.

  3. Q: What is the input voltage range supported by TOP258EN? A: TOP258EN supports a wide input voltage range from 85V AC to 265V AC.

  4. Q: What is the maximum output power that can be achieved with TOP258EN? A: The maximum output power depends on the specific design and configuration, but TOP258EN can typically handle power levels up to 100W.

  5. Q: Does TOP258EN require an external MOSFET for operation? A: No, TOP258EN integrates a high-voltage MOSFET internally, eliminating the need for an external MOSFET.

  6. Q: Can TOP258EN operate in a flyback topology? A: Yes, TOP258EN is specifically designed for flyback converter topologies.

  7. Q: What are the key features of TOP258EN? A: Some key features of TOP258EN include primary-side regulation, frequency jittering for low EMI, built-in protection features, and high efficiency.

  8. Q: How does TOP258EN achieve primary-side regulation? A: TOP258EN uses a proprietary control method called EcoSmart™ technology, which enables accurate regulation without requiring an optocoupler or secondary feedback circuitry.

  9. Q: What are the built-in protection features of TOP258EN? A: TOP258EN includes features such as overvoltage protection (OVP), overload protection (OLP), and thermal shutdown protection.

  10. Q: Is TOP258EN compliant with safety standards? A: Yes, TOP258EN is designed to meet various safety standards such as UL, CE, and ENEC, making it suitable for use in applications requiring regulatory compliance.

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