ON Semiconductor
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SG3525ADWR2G
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SG3525ADWR2G

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: PWM Controller
  • Characteristics: High-performance, versatile, and efficient
  • Package: SOIC-16
  • Essence: Regulates the pulse width modulation (PWM) signal
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: 8V to 35V
  • Output Current: Up to 200mA
  • Frequency Range: 100Hz to 500kHz
  • Duty Cycle Range: 0% to 100%
  • Operating Temperature: -40°C to +85°C

Detailed Pin Configuration

  1. Error Amplifier Input (-)
  2. Error Amplifier Input (+)
  3. Ground (GND)
  4. Compensation
  5. Soft Start
  6. Shutdown
  7. Vref
  8. Feedback Input
  9. Output
  10. Dead Time Control
  11. Oscillator Timing Capacitor
  12. Oscillator Timing Resistor
  13. Discharge
  14. Vcc
  15. Sync Input
  16. Sync Output

Functional Features

  • Wide input voltage range for various applications
  • Adjustable duty cycle and frequency control
  • Error amplifier with high gain for precise regulation
  • Soft start function for smooth power-up
  • Shutdown feature for power saving
  • Synchronization capability for multi-device operation

Advantages and Disadvantages

Advantages: - Versatile and widely used in power electronics applications - High-performance and efficient PWM control - Compact package size for space-constrained designs - Wide operating temperature range for harsh environments

Disadvantages: - Limited output current capacity - Requires external components for complete functionality - Not suitable for high-power applications

Working Principles

The SG3525ADWR2G is a pulse width modulation (PWM) controller IC that regulates the width of the output pulse based on the input voltage and control signals. It uses an error amplifier to compare the feedback voltage with a reference voltage, adjusting the duty cycle accordingly. The adjustable frequency range allows for precise control over the switching speed. The soft start feature gradually increases the duty cycle during power-up to prevent sudden current surges. The shutdown function disables the PWM output to conserve power when not in use.

Detailed Application Field Plans

The SG3525ADWR2G is commonly used in various power electronics applications, including:

  1. Switching Power Supplies: Used to regulate the output voltage and current in AC-DC and DC-DC converters.
  2. Motor Speed Control: Enables precise control of motor speed in applications such as fans, pumps, and robotics.
  3. Lighting Systems: Controls the brightness of LEDs or adjusts the intensity of fluorescent lamps.
  4. Battery Chargers: Regulates the charging process for different types of batteries.
  5. Inverters: Converts DC power to AC power for applications like solar energy systems and uninterruptible power supplies (UPS).

Detailed and Complete Alternative Models

  1. TL494: Similar PWM controller IC with adjustable frequency and duty cycle control.
  2. UC3842: Integrated circuit with fixed frequency PWM control and protection features.
  3. IRS2153D: High-voltage driver IC with integrated PWM control for half-bridge circuits.
  4. LT1241: PWM controller IC with built-in oscillator and adjustable dead time control.

These alternative models offer similar functionality and can be used as substitutes for the SG3525ADWR2G in various applications.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van SG3525ADWR2G in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of SG3525ADWR2G in technical solutions:

  1. Q: What is SG3525ADWR2G? A: SG3525ADWR2G is a pulse width modulation (PWM) controller IC commonly used in power electronics applications.

  2. Q: What are the main features of SG3525ADWR2G? A: The main features of SG3525ADWR2G include adjustable frequency, duty cycle control, soft-start capability, and built-in error amplifier.

  3. Q: How does SG3525ADWR2G work? A: SG3525ADWR2G generates PWM signals by comparing a reference voltage with a sawtooth waveform. The output duty cycle is adjusted based on this comparison.

  4. Q: What are the typical applications of SG3525ADWR2G? A: SG3525ADWR2G is commonly used in applications such as DC-DC converters, inverters, battery chargers, and switch-mode power supplies.

  5. Q: How can I adjust the frequency of SG3525ADWR2G? A: The frequency of SG3525ADWR2G can be adjusted by changing the values of external timing components like resistors and capacitors connected to its timing pins.

  6. Q: Can SG3525ADWR2G handle high currents? A: No, SG3525ADWR2G is a controller IC and cannot handle high currents directly. It requires external power devices such as MOSFETs or transistors to handle high currents.

  7. Q: How do I protect SG3525ADWR2G from overvoltage or overcurrent conditions? A: External protection circuits like overvoltage protection (OVP) and overcurrent protection (OCP) can be implemented using additional components to safeguard SG3525ADWR2G.

  8. Q: Can I use SG3525ADWR2G in a single-ended configuration? A: Yes, SG3525ADWR2G can be used in both single-ended and push-pull configurations depending on the specific application requirements.

  9. Q: What is the maximum operating voltage for SG3525ADWR2G? A: The maximum operating voltage for SG3525ADWR2G is typically around 40V, but it is recommended to refer to the datasheet for the exact specifications.

  10. Q: Are there any application notes or reference designs available for SG3525ADWR2G? A: Yes, the manufacturer of SG3525ADWR2G usually provides application notes and reference designs that can help users understand and implement the IC in various applications.