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SG3526BDW-TR
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SG3526BDW-TR

Product Overview

Category

The SG3526BDW-TR belongs to the category of voltage mode PWM controllers.

Use

It is commonly used in power supply applications, particularly in switch-mode power supplies (SMPS) and inverters.

Characteristics

  • Voltage mode control
  • Wide operating frequency range
  • High output current capability
  • Low standby current
  • Pulse-by-pulse current limiting
  • Adjustable dead-time control
  • Soft-start capability

Package

The SG3526BDW-TR is available in a 16-pin SOIC (Small Outline Integrated Circuit) package.

Essence

This device serves as a crucial component in regulating and controlling the output voltage and current in power supply systems.

Packaging/Quantity

It is typically supplied in reels with a quantity of 2500 units per reel.

Specifications

  • Operating Voltage Range: 8V to 40V
  • Oscillator Frequency Range: 100Hz to 500kHz
  • Output Current: Up to 1.5A
  • Standby Current: 5mA
  • Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

  1. VREF
  2. COMP
  3. RT/CT
  4. CT
  5. GROUND
  6. OUTPUT
  7. DEADTIME
  8. VCC
  9. OSCILLATOR
  10. SYNC
  11. RAMP
  12. CURRENT SENSE
  13. SHUTDOWN
  14. ERROR AMPLIFIER INVERTING INPUT
  15. ERROR AMPLIFIER NON-INVERTING INPUT
  16. VREF

Functional Features

  • Error amplifier for precise voltage regulation
  • Oscillator for setting the switching frequency
  • Current sense input for overcurrent protection
  • Shutdown pin for enabling/disabling the controller
  • Deadtime control for preventing shoot-through in bridge circuits

Advantages and Disadvantages

Advantages

  • Wide operating frequency range allows flexibility in design
  • High output current capability suits various power supply applications
  • Low standby current minimizes power consumption during idle states
  • Pulse-by-pulse current limiting enhances system safety

Disadvantages

  • Limited output current compared to some higher-power controllers
  • Requires external components for complete power supply implementation

Working Principles

The SG3526BDW-TR operates by comparing a reference voltage with a feedback signal from the power supply output. It then adjusts the duty cycle of the PWM signal to regulate the output voltage. The error amplifier, oscillator, and current sense inputs work together to maintain stable and efficient power conversion.

Detailed Application Field Plans

The SG3526BDW-TR finds extensive use in various power supply applications, including: - Uninterruptible Power Supplies (UPS) - Solar Inverters - Battery Chargers - LED Drivers - Motor Drives

Detailed and Complete Alternative Models

Some alternative models to the SG3526BDW-TR include: - UC3842 - TL494 - SG3524 - IR2153

In conclusion, the SG3526BDW-TR plays a vital role in power supply systems, offering a balance of performance and flexibility for a wide range of applications.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av SG3526BDW-TR i tekniska lösningar

  1. What is the SG3526BDW-TR?

    • The SG3526BDW-TR is a pulse width modulator (PWM) integrated circuit commonly used in power supply and motor control applications.

  2. What are the key features of SG3526BDW-TR?

    • The key features include a precision reference voltage, error amplifier, oscillator, PWM comparator, and output drivers, making it suitable for various power control applications.

  3. How is SG3526BDW-TR typically used in power supply designs?

    • It is often used to regulate the output voltage of power supplies by controlling the duty cycle of the switching transistors.

  4. Can SG3526BDW-TR be used for motor speed control?

    • Yes, it can be utilized in motor control applications to adjust the speed of DC motors through PWM techniques.

  5. What are the recommended operating conditions for SG3526BDW-TR?

    • The typical operating voltage range is between 8V to 40V, and it can operate over a temperature range of -25°C to 85°C.

  6. How does SG3526BDW-TR protect against overcurrent or overvoltage conditions?

    • External circuitry can be added to provide overcurrent and overvoltage protection, ensuring the safety and reliability of the system.

  7. What are the common design considerations when using SG3526BDW-TR?

    • Designers need to consider input voltage range, output voltage requirements, frequency of operation, and thermal management to ensure proper functionality.

  8. Can SG3526BDW-TR be used in battery charging applications?

    • Yes, it can be employed in battery charging circuits to regulate the charging current and voltage, providing efficient and controlled charging.

  9. Are there any application notes or reference designs available for SG3526BDW-TR?

    • Yes, the manufacturer provides application notes and reference designs to assist engineers in implementing the IC effectively in their designs.

  10. Where can I find detailed technical specifications and datasheets for SG3526BDW-TR?

    • Detailed technical specifications and datasheets can be found on the manufacturer's website or through authorized distributors.