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TOP244G
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TOP244G

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
  • Package: TO-220-7L
  • Essence: Switching Power Supply Controller
  • Packaging/Quantity: Tube/50 pieces

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 90W
  • Frequency Range: 50Hz to 60Hz
  • Operating Temperature Range: -40°C to +150°C
  • Maximum Duty Cycle: 75%
  • Maximum Output Voltage: 28V
  • Maximum Output Current: 3.5A

Detailed Pin Configuration

  1. VCC: Power supply input
  2. GND: Ground reference
  3. FB: Feedback pin for voltage regulation
  4. COMP: Compensation pin for stability control
  5. CS: Current sense pin for current regulation
  6. DRAIN: Switching power MOSFET drain pin
  7. SOURCE: Switching power MOSFET source pin

Functional Features

  • Primary-Side Regulation (PSR) Control
  • Auto-restart Protection
  • Frequency Jittering for EMI Reduction
  • Overload and Short-Circuit Protection
  • Thermal Shutdown Protection
  • Soft Start for Controlled Startup

Advantages and Disadvantages

Advantages: - High efficiency leading to reduced power consumption - Wide input voltage range allows for universal compatibility - Compact package size for space-constrained applications - Comprehensive protection features ensure system reliability

Disadvantages: - Requires external components for complete power supply implementation - Limited maximum output voltage and current compared to some alternatives

Working Principles

The TOP244G is a primary-side regulated switching power supply controller. It operates by controlling the duty cycle of the power MOSFET in the primary side of the power transformer. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle accordingly to maintain a stable output. The compensation pin (COMP) is used to optimize stability and transient response. The current sense pin (CS) provides current regulation by monitoring the current flowing through the power MOSFET.

Detailed Application Field Plans

The TOP244G is commonly used in various applications, including: - AC/DC Adapters - LED Lighting - Set-Top Boxes - Audio Amplifiers - Industrial Power Supplies

Detailed and Complete Alternative Models

Some alternative models that can be considered for similar applications are: - TOP245P: Similar specifications and features, different package (DIP-8) - LNK364GN: Integrated flyback switcher with similar functionality - UC3843: PWM controller with higher maximum output voltage and current capabilities

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10 domande e risposte comuni relative all'applicazione di TOP244G nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of TOP244G in technical solutions:

  1. Q: What is TOP244G?
    A: TOP244G is a highly integrated offline switcher IC (integrated circuit) that is commonly used in power supply applications.

  2. Q: What are the key features of TOP244G?
    A: The key features of TOP244G include high efficiency, low standby power consumption, built-in protection features, and wide input voltage range.

  3. Q: What is the typical application of TOP244G?
    A: TOP244G is typically used in various power supply applications such as AC/DC converters, LED drivers, battery chargers, and industrial power systems.

  4. Q: What is the maximum output power that TOP244G can handle?
    A: TOP244G can handle output power up to 90 watts, depending on the specific application and operating conditions.

  5. Q: Can TOP244G operate with both high and low input voltages?
    A: Yes, TOP244G has a wide input voltage range of 85VAC to 265VAC, making it suitable for both high and low voltage applications.

  6. Q: Does TOP244G require an external MOSFET?
    A: No, TOP244G integrates a high-voltage power MOSFET, eliminating the need for an external MOSFET in most applications.

  7. Q: What are the main advantages of using TOP244G in power supply designs?
    A: The main advantages of using TOP244G include simplified circuit design, reduced component count, improved efficiency, and enhanced system reliability.

  8. Q: Does TOP244G have any built-in protection features?
    A: Yes, TOP244G incorporates various protection features such as overvoltage protection, overcurrent protection, and thermal shutdown to ensure safe operation.

  9. Q: Can TOP244G be used in both isolated and non-isolated power supply designs?
    A: Yes, TOP244G can be used in both isolated and non-isolated power supply designs, providing flexibility for different application requirements.

  10. Q: Are there any design resources available for TOP244G?
    A: Yes, the manufacturer of TOP244G provides datasheets, application notes, and reference designs that can help engineers in designing power supplies using TOP244G.

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