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TOP249YN
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TOP249YN

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
  • Package: Through-Hole DIP-7 or Surface Mount SMD-7
  • Essence: Switching Regulator Controller
  • Packaging/Quantity: Tube/50 pieces per tube

Specifications

  • Input Voltage Range: 9V to 100V
  • Output Power: Up to 60W
  • Switching Frequency: 132 kHz to 500 kHz
  • Operating Temperature Range: -40°C to +125°C
  • Output Voltage Accuracy: ±5%
  • Maximum Duty Cycle: 75%

Detailed Pin Configuration

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

Functional Features

  • Integrated high-voltage power MOSFET
  • Built-in frequency jittering for reduced EMI
  • Auto-restart protection for fault conditions
  • Over-temperature protection
  • Cycle-by-cycle current limit
  • Soft-start and shutdown control
  • Adjustable output voltage

Advantages

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

Disadvantages

  • Limited maximum output power of 60W
  • Requires external MOSFET for operation
  • Not suitable for low-power applications due to higher standby power consumption

Working Principles

The TOP249YN is a switching regulator controller that operates in a flyback topology. It uses a high-voltage power MOSFET to switch the input voltage and store energy in an output capacitor. The controller regulates the output voltage by adjusting the duty cycle of the switching waveform. By controlling the switching frequency and duty cycle, the TOP249YN achieves high efficiency power conversion.

Detailed Application Field Plans

The TOP249YN is commonly used in various power management applications, including:

  1. Offline AC-DC power supplies
  2. LED lighting systems
  3. Battery chargers
  4. Industrial controls
  5. Telecom and networking equipment
  6. Consumer electronics

Detailed and Complete Alternative Models

  1. TOP250YN: Similar specifications and features, but with higher maximum output power of 100W.
  2. TOP253YN: Lower maximum output power of 40W, suitable for lower power applications.
  3. TOP246YN: Higher maximum output power of 90W, suitable for higher power applications.

(Note: These alternative models are from the same TOPSwitch family and offer similar functionality with slight variations in specifications.)

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技術ソリューションにおける TOP249YN の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of TOP249YN in technical solutions:

  1. Q: What is TOP249YN?
    A: TOP249YN is a high-performance integrated circuit (IC) that combines a power switch, control circuitry, and protection features for offline power supplies.

  2. Q: What is the maximum input voltage for TOP249YN?
    A: The maximum input voltage for TOP249YN is typically 265V AC, but it can handle up to 305V AC for short durations.

  3. Q: What is the output power range supported by TOP249YN?
    A: TOP249YN supports an output power range of up to 100W, making it suitable for various applications such as LED lighting, industrial controls, and consumer electronics.

  4. Q: Can TOP249YN operate in continuous or discontinuous mode?
    A: TOP249YN can operate in both continuous and discontinuous conduction mode (CCM and DCM) depending on the load conditions.

  5. Q: Does TOP249YN have built-in protection features?
    A: Yes, TOP249YN incorporates various protection features like overvoltage protection (OVP), overload protection (OLP), and thermal shutdown to ensure safe operation.

  6. Q: What is the typical switching frequency of TOP249YN?
    A: The typical switching frequency of TOP249YN is around 66 kHz, but it can be externally adjusted using a resistor.

  7. Q: Can TOP249YN be used in flyback or forward converter topologies?
    A: Yes, TOP249YN is designed to work in both flyback and forward converter topologies, providing flexibility in power supply designs.

  8. Q: Is TOP249YN compatible with wide input voltage ranges?
    A: Yes, TOP249YN has a wide input voltage range of 85V AC to 265V AC, making it suitable for global applications.

  9. Q: Does TOP249YN require an external start-up resistor?
    A: Yes, TOP249YN requires an external start-up resistor to set the initial operating conditions during power-up.

  10. Q: Can TOP249YN be used in high-temperature environments?
    A: Yes, TOP249YN has a wide operating temperature range of -40°C to 150°C, allowing it to be used in various industrial and automotive applications.

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