Microsemi Corporation
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SG2525AN
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SG2525AN

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: PWM Controller
  • Characteristics: High-performance, versatile, and efficient
  • Package: DIP-16 (Dual In-line Package with 16 pins)
  • Essence: Regulates the pulse width modulation (PWM) signal
  • Packaging/Quantity: Available in tubes or reels, quantity varies based on supplier

Specifications

  • Input Voltage: 8V to 35V
  • Output Voltage: 5V to 35V
  • Operating Temperature: -40°C to +85°C
  • Frequency Range: 100Hz to 500kHz
  • Duty Cycle: Up to 50%
  • Output Current: Up to 200mA

Detailed Pin Configuration

  1. Vref: Reference voltage input
  2. Comp: Error amplifier output
  3. FB: Feedback pin for regulating output voltage
  4. RT/CT: Timing resistor/capacitor connection
  5. CT: Timing capacitor connection
  6. OSC: Oscillator timing capacitor connection
  7. Deadtime: Deadtime control pin
  8. Sync: Synchronization input
  9. GND: Ground
  10. Output: PWM output
  11. Output: PWM output
  12. VCC: Positive supply voltage
  13. VCC: Positive supply voltage
  14. Error Amp: Error amplifier input
  15. Error Amp: Error amplifier input
  16. Error Amp: Error amplifier input

Functional Features

  • Highly accurate voltage regulation
  • Wide input and output voltage range
  • Adjustable frequency and duty cycle
  • Deadtime control for preventing shoot-through current
  • Synchronization capability for multi-phase operation
  • Error amplifier for precise feedback control

Advantages

  • Versatile and suitable for various applications
  • High efficiency and low power consumption
  • Compact size and easy to integrate
  • Robust design for reliable performance
  • Wide operating temperature range

Disadvantages

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

Working Principles

The SG2525AN is a PWM controller that regulates the pulse width modulation signal. It operates by comparing the feedback voltage with a reference voltage and adjusts the duty cycle accordingly. The error amplifier ensures precise feedback control, while the timing resistor and capacitor determine the frequency of the PWM signal. The deadtime control prevents simultaneous conduction of the high-side and low-side switches, avoiding shoot-through current.

Detailed Application Field Plans

The SG2525AN finds applications in various fields, including:

  1. Power Supplies: Used in switch-mode power supplies for efficient voltage regulation.
  2. Motor Control: Enables precise speed control in motor drives and inverters.
  3. Lighting Systems: Facilitates dimming and brightness control in LED lighting systems.
  4. Battery Chargers: Regulates charging current and voltage in battery charging circuits.
  5. Audio Amplifiers: Provides efficient power amplification in audio systems.

Detailed and Complete Alternative Models

  1. SG3525AN: Similar functionality with higher output current capacity.
  2. TL494CN: PWM controller with additional features like soft-start and shutdown.
  3. UC3843AN: Integrated circuit with adjustable frequency and duty cycle.

(Note: This list is not exhaustive and other alternative models may exist.)

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10个与SG2525AN在技术解决方案中的应用相关的常见问题及解答

Sure! Here are 10 common questions and answers related to the application of SG2525AN in technical solutions:

  1. Q: What is SG2525AN? A: SG2525AN is a pulse width modulation (PWM) controller IC commonly used in power supply applications.

  2. Q: What is the purpose of SG2525AN? A: The purpose of SG2525AN is to regulate the output voltage of a power supply by controlling the duty cycle of the PWM signal.

  3. Q: How does SG2525AN work? A: SG2525AN works by comparing a feedback voltage with a reference voltage and adjusting the duty cycle of the PWM signal accordingly.

  4. Q: What are the key features of SG2525AN? A: Some key features of SG2525AN include adjustable frequency, soft-start capability, error amplifier, and current limiting.

  5. Q: What is the maximum operating frequency of SG2525AN? A: The maximum operating frequency of SG2525AN is typically around 500 kHz.

  6. Q: Can SG2525AN be used in both buck and boost converter topologies? A: Yes, SG2525AN can be used in both buck and boost converter topologies, as well as other power supply configurations.

  7. Q: What is the input voltage range for SG2525AN? A: The input voltage range for SG2525AN is typically between 8V and 35V.

  8. Q: Does SG2525AN have built-in protection features? A: Yes, SG2525AN has built-in protection features such as overcurrent protection and thermal shutdown.

  9. Q: Can SG2525AN be used in high-power applications? A: Yes, SG2525AN can be used in high-power applications by using external power devices such as MOSFETs or IGBTs.

  10. Q: Are there any application notes or reference designs available for SG2525AN? A: Yes, the manufacturer of SG2525AN typically provides application notes and reference designs that can help with its implementation in various technical solutions.

Please note that the answers provided here are general and may vary depending on specific datasheets and application requirements.