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TOP244P
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TOP244P

Product Overview

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

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 60W
  • Switching Frequency: 132 kHz
  • Operating Temperature Range: -40°C to +150°C
  • Protection Features: Overload Protection, Overvoltage Protection, Overtemperature Protection

Detailed Pin Configuration

The TOP244P has a 7-pin configuration:

  1. VSENSE: Current Sense Input
  2. GND: Ground
  3. FB: Feedback Input
  4. DRAIN: High-Voltage Power MOSFET Drain Connection
  5. SOURCE: High-Voltage Power MOSFET Source Connection
  6. VCC: Supply Voltage Input
  7. CONTROL: Control and Bias Supply

Functional Features

  • Primary-Side Regulation (PSR) Control
  • Auto-restart Protection for Fault Conditions
  • Frequency Jittering for EMI Reduction
  • Cycle-by-Cycle Current Limiting
  • Line Undervoltage Lockout with Hysteresis
  • Soft-Start Function
  • Built-in Overtemperature Protection

Advantages and Disadvantages

Advantages: - High efficiency - Low standby power consumption - Wide input voltage range - Compact TO-220 package - Comprehensive protection features

Disadvantages: - Limited output power (up to 60W) - Requires external components for complete power supply design

Working Principles

The TOP244P is a switching power supply controller that utilizes primary-side regulation (PSR) control. It operates by modulating the duty cycle of the power MOSFET to regulate the output voltage. The PSR control eliminates the need for an optocoupler and secondary-side feedback circuitry, simplifying the design and reducing costs.

Detailed Application Field Plans

The TOP244P is commonly used in various applications, including:

  1. AC/DC Adapters
  2. LED Lighting
  3. Set-Top Boxes
  4. Audio Equipment
  5. Industrial Power Supplies

Detailed and Complete Alternative Models

Some alternative models to the TOP244P include:

  1. TOP245P: Similar specifications and features, but with a different pin configuration.
  2. TOP246P: Higher output power capability (up to 90W), otherwise similar to TOP244P.
  3. TOP243P: Lower output power capability (up to 40W), otherwise similar to TOP244P.

These alternative models provide flexibility in choosing the most suitable option based on specific requirements.

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von TOP244P in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of TOP244P in technical solutions:

  1. Q: What is TOP244P?
    A: TOP244P is a highly integrated offline switcher IC (integrated circuit) designed for low-power applications.

  2. Q: What are the typical applications of TOP244P?
    A: TOP244P is commonly used in power supplies for various electronic devices such as TVs, monitors, set-top boxes, and LED lighting.

  3. Q: What is the input voltage range supported by TOP244P?
    A: The input voltage range of TOP244P is typically between 85VAC and 265VAC.

  4. Q: What is the maximum output power that can be achieved with TOP244P?
    A: The maximum output power depends on the specific design and external components used, but it can generally reach up to 90W.

  5. Q: Does TOP244P require an external MOSFET?
    A: Yes, TOP244P requires an external MOSFET to handle the switching operation.

  6. Q: Can TOP244P operate in continuous or discontinuous mode?
    A: TOP244P can operate in both continuous and discontinuous modes depending on the load conditions.

  7. Q: What are the key features of TOP244P?
    A: Some key features of TOP244P include built-in frequency jittering, cycle-by-cycle current limit, thermal shutdown protection, and auto-restart after fault conditions.

  8. Q: How does TOP244P provide overvoltage protection?
    A: TOP244P has an internal overvoltage protection (OVP) circuit that shuts down the device if the output voltage exceeds a certain threshold.

  9. Q: Can TOP244P be used in flyback converter topologies?
    A: Yes, TOP244P is specifically designed for flyback converter applications.

  10. Q: Are there any evaluation boards or reference designs available for TOP244P?
    A: Yes, Power Integrations, the manufacturer of TOP244P, provides evaluation boards and reference designs that can help in designing power supplies using this IC.

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