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L4981AD013TR
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L4981AD013TR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Factor Correction (PFC) controller
  • Characteristics: High efficiency, low standby power consumption
  • Package: Surface Mount Device (SMD)
  • Essence: Regulates and controls the power factor in electrical systems
  • Packaging/Quantity: Tape and reel packaging, quantity varies based on manufacturer

Specifications

  • Input Voltage Range: 85V to 265V AC
  • Output Voltage Range: Adjustable
  • Maximum Output Power: 300W
  • Switching Frequency: 65kHz to 115kHz
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4981AD013TR IC has the following pin configuration:

  1. VCC: Power supply voltage input
  2. GND: Ground reference
  3. COMP: Compensation pin for feedback control loop
  4. CS: Current sense input for current limit protection
  5. FB: Feedback pin for output voltage regulation
  6. RT/CT: Timing components for switching frequency control
  7. DRAIN: High-voltage power MOSFET drain connection
  8. SOURCE: High-voltage power MOSFET source connection

Functional Features

  • Power factor correction with high efficiency
  • Low standby power consumption
  • Overvoltage and overcurrent protection
  • Soft-start function for smooth power-up
  • Adaptive blanking time for improved noise immunity
  • Internal leading-edge blanking for enhanced light-load efficiency

Advantages and Disadvantages

Advantages: - High efficiency power factor correction - Low standby power consumption - Overvoltage and overcurrent protection

Disadvantages: - Requires external timing components for switching frequency control - Limited maximum output power of 300W

Working Principles

The L4981AD013TR is a power factor correction controller IC that regulates and controls the power factor in electrical systems. It operates by controlling the switching of a high-voltage power MOSFET to shape the input current waveform and achieve near-unity power factor. By actively correcting the power factor, this IC improves the efficiency of power conversion and reduces energy losses.

Detailed Application Field Plans

The L4981AD013TR is commonly used in various applications, including:

  1. Power supplies for desktop computers
  2. LED lighting systems
  3. Industrial motor drives
  4. Telecommunication equipment
  5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the L4981AD013TR include:

  1. L6562A
  2. UC3854
  3. FAN7529
  4. NCP1653
  5. UCC28070

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

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av L4981AD013TR i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of L4981AD013TR in technical solutions:

Q1: What is L4981AD013TR? A1: L4981AD013TR is a specific model of a power factor corrector (PFC) controller IC.

Q2: What is the purpose of L4981AD013TR? A2: The purpose of L4981AD013TR is to improve the power factor and efficiency of AC-DC converters by controlling the input current waveform.

Q3: What are the key features of L4981AD013TR? A3: Some key features of L4981AD013TR include high power factor correction, low THD (Total Harmonic Distortion), integrated protections, and wide input voltage range.

Q4: How does L4981AD013TR achieve power factor correction? A4: L4981AD013TR achieves power factor correction by regulating the input current to follow the shape of the input voltage waveform, thereby reducing harmonic distortion and improving power factor.

Q5: What is the maximum output power that L4981AD013TR can handle? A5: L4981AD013TR can handle a maximum output power of up to a few hundred watts, depending on the specific application and design considerations.

Q6: Can L4981AD013TR be used in both single-phase and three-phase systems? A6: Yes, L4981AD013TR can be used in both single-phase and three-phase systems, making it versatile for various applications.

Q7: Does L4981AD013TR have built-in protection features? A7: Yes, L4981AD013TR has built-in protection features such as overvoltage protection, overload protection, and thermal shutdown to ensure safe operation.

Q8: What is the typical operating frequency range of L4981AD013TR? A8: The typical operating frequency range of L4981AD013TR is between 20 kHz and 200 kHz, depending on the specific application requirements.

Q9: Can L4981AD013TR be used in high-voltage applications? A9: Yes, L4981AD013TR can be used in high-voltage applications as it supports a wide input voltage range, typically up to several hundred volts.

Q10: Are there any application notes or reference designs available for L4981AD013TR? A10: Yes, the manufacturer of L4981AD013TR provides application notes and reference designs that can help engineers in implementing the IC effectively in their technical solutions.

Please note that these answers are general and may vary depending on the specific application and design considerations. It is always recommended to refer to the datasheet and application notes provided by the manufacturer for accurate information.