Power Integrations
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TOP255YN
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TOP255YN

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
  • Package: TO-220
  • Essence: Switching Regulator Controller
  • Packaging/Quantity: Tube/50 pieces

Specifications

  • Input Voltage Range: 9V to 38V
  • Output Voltage Range: 5V to 24V
  • Switching Frequency: 132 kHz
  • Maximum Output Power: 45W
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

  1. VCC: Supply voltage input
  2. GND: Ground reference
  3. FB: Feedback pin for output voltage regulation
  4. COMP: Compensation pin for loop stability
  5. CS: Current sense input for current limit protection
  6. DRAIN: High-voltage power MOSFET drain connection
  7. SOURCE: High-voltage power MOSFET source connection
  8. VREF: Reference voltage output

Functional Features

  • Integrated high-voltage power MOSFET
  • Built-in frequency jittering for reduced EMI
  • Auto-restart protection for overvoltage and overcurrent faults
  • Cycle-by-cycle current limit protection
  • Adjustable output voltage through external resistors
  • Soft-start function for controlled startup

Advantages

  • High efficiency conversion
  • Low standby power consumption
  • Wide input voltage range allows for versatile applications
  • Compact TO-220 package for easy integration
  • Robust protection features ensure reliable operation

Disadvantages

  • Limited maximum output power of 45W
  • Requires external components for complete power supply design
  • Not suitable for high-power applications

Working Principles

The TOP255YN is a switching regulator controller that utilizes a high-voltage power MOSFET to efficiently convert input voltage into regulated output voltage. It operates by controlling the duty cycle of the power MOSFET through feedback and compensation signals. The integrated frequency jittering reduces electromagnetic interference (EMI) emissions. The device also incorporates protection features such as auto-restart, overvoltage, and overcurrent protection for enhanced reliability.

Detailed Application Field Plans

The TOP255YN is commonly used in various power management applications, including:

  1. Power supplies for consumer electronics
  2. Industrial control systems
  3. LED lighting
  4. Telecom equipment
  5. Automotive electronics
  6. Battery chargers

Detailed and Complete Alternative Models

  • TOP256EN: Similar specifications and features, but with higher maximum output power of 65W.
  • TOP257PN: Lower maximum output power of 30W, suitable for lower power applications.
  • TOP258PN: Higher maximum output power of 100W, suitable for higher power applications.

(Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's documentation for a complete list.)

This entry provides an overview of the TOP255YN, a switching regulator controller used in power management applications. It includes information on its category, use, characteristics, package, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.

רשום 10 שאלות ותשובות נפוצות הקשורות ליישום של TOP255YN בפתרונות טכניים

Sure! Here are 10 common questions and answers related to the application of TOP255YN in technical solutions:

  1. Q: What is TOP255YN? A: TOP255YN is a high-performance integrated switcher IC (integrated circuit) designed for offline power supplies.

  2. Q: What are the key features of TOP255YN? A: The key features of TOP255YN include high efficiency, low standby power consumption, wide input voltage range, and built-in protection features.

  3. Q: What is the typical application of TOP255YN? A: TOP255YN is commonly used in various applications such as AC/DC power supplies, LED lighting, and industrial control systems.

  4. Q: What is the maximum output power that TOP255YN can handle? A: TOP255YN can handle a maximum output power of up to 100 watts, depending on the specific application and operating conditions.

  5. Q: Does TOP255YN support power factor correction (PFC)? A: Yes, TOP255YN supports power factor correction, which helps improve the overall power quality and efficiency of the system.

  6. Q: Can TOP255YN operate with both low and high input voltages? A: Yes, TOP255YN has a wide input voltage range, typically from 85VAC to 265VAC, making it suitable for various mains voltages worldwide.

  7. Q: What are the protection features available in TOP255YN? A: TOP255YN includes protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.

  8. Q: Is TOP255YN suitable for dimmable LED lighting applications? A: Yes, TOP255YN can be used in dimmable LED lighting applications by integrating external dimming control circuitry.

  9. Q: Does TOP255YN require an external heat sink for cooling? A: The need for an external heat sink depends on the specific application and power dissipation requirements. In some cases, a heat sink may be necessary.

  10. Q: Are there any reference designs or application notes available for TOP255YN? A: Yes, the manufacturer of TOP255YN provides reference designs and application notes that can help engineers in implementing the IC in their designs efficiently.

Please note that the answers provided here are general and may vary depending on the specific requirements and conditions of each application.