Microsemi Corporation
Obrázek může být reprezentace.
Viz Specifikace pro podrobnosti o produktu.
SG2526BDW
Zobrazit detail DataSheets

SG2526BDW

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Mode PWM Controller
  • Characteristics: High-performance, versatile, and reliable
  • Package: SOIC-16 (Small Outline Integrated Circuit), Dual in-line package (DIP)
  • Essence: Regulates and controls the pulse width modulation (PWM) signal for voltage regulation applications
  • Packaging/Quantity: Available in reels or tubes, with 250 units per reel/tube

Specifications

  • Input Voltage Range: 8V to 35V
  • Output Voltage Range: 5V to 30V
  • Operating Temperature Range: -40°C to +85°C
  • Switching Frequency: Adjustable up to 500kHz
  • Maximum Duty Cycle: 100%
  • Output Current: Up to 1A

Detailed Pin Configuration

The SG2526BDW has a total of 16 pins. The pin configuration is as follows:

  1. COMP
  2. RT/CT
  3. VREF
  4. GND
  5. OSC
  6. SYNC
  7. DISCH
  8. VCC
  9. OUT
  10. FB
  11. INV
  12. CS
  13. SS/TR
  14. RAMP
  15. CT/RT
  16. REF

Functional Features

  • Voltage Mode Control: Provides precise voltage regulation by adjusting the duty cycle of the PWM signal.
  • Adjustable Oscillator Frequency: Allows customization of the switching frequency according to the application requirements.
  • Synchronization Input: Enables synchronization with an external clock source for multi-phase operation.
  • Current Limiting: Incorporates current sensing and limiting features to protect the circuit from overcurrent conditions.
  • Soft Start/Shutdown: Implements a soft start and shutdown function to prevent voltage spikes during power-up and power-down.

Advantages and Disadvantages

Advantages: - High-performance voltage regulation - Versatile and adaptable to various applications - Robust and reliable operation - Adjustable switching frequency - Current limiting for protection against overcurrent conditions

Disadvantages: - Limited output current capacity (up to 1A) - Requires external components for complete functionality - Not suitable for high-power applications

Working Principles

The SG2526BDW operates based on the voltage mode control technique. It compares a reference voltage with a feedback signal from the output, adjusting the duty cycle of the PWM signal accordingly. This regulates the output voltage by controlling the ON and OFF time of the power switch. The adjustable oscillator frequency allows customization of the switching speed, while the current limiting feature protects the circuit from excessive current flow.

Detailed Application Field Plans

The SG2526BDW finds application in various voltage regulation scenarios, including but not limited to: - Switching Power Supplies - DC-DC Converters - Battery Chargers - LED Drivers - Motor Control Circuits

Detailed and Complete Alternative Models

  • SG3526N: Similar voltage mode PWM controller with extended temperature range (-40°C to +125°C).
  • UC3842AN: Integrated circuit with similar functionality but higher output current capability (up to 2A).
  • TL494CN: PWM controller with additional features like dead-time control and error amplifier.

Note: These alternative models may have different pin configurations and package types. Please refer to their respective datasheets for detailed information.

Word count: 305 words

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SG2526BDW v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SG2526BDW in technical solutions:

  1. Q: What is SG2526BDW? A: SG2526BDW is a voltage mode PWM controller IC used in power supply applications.

  2. Q: What is the input voltage range for SG2526BDW? A: The input voltage range for SG2526BDW is typically between 8V and 40V.

  3. Q: What is the output voltage range that can be achieved using SG2526BDW? A: The output voltage range depends on the external components used, but it can typically be adjusted from 0V to the input voltage.

  4. Q: Can SG2526BDW handle high current loads? A: Yes, SG2526BDW can handle high current loads by using appropriate external power transistors.

  5. Q: What is the maximum switching frequency supported by SG2526BDW? A: The maximum switching frequency supported by SG2526BDW is typically around 500kHz.

  6. Q: Is SG2526BDW suitable for both buck and boost converter applications? A: Yes, SG2526BDW can be used in both buck and boost converter applications.

  7. Q: Does SG2526BDW have built-in protection features? A: Yes, SG2526BDW has built-in protection features such as overcurrent protection and thermal shutdown.

  8. Q: Can SG2526BDW operate in a wide temperature range? A: Yes, SG2526BDW can operate in a wide temperature range, typically from -40°C to 85°C.

  9. Q: What type of control method does SG2526BDW use? A: SG2526BDW uses voltage mode control, where the output voltage is regulated by adjusting the duty cycle of the PWM signal.

  10. Q: Are there any application notes or reference designs available for SG2526BDW? A: Yes, the manufacturer provides application notes and reference designs that can help in implementing SG2526BDW in various technical solutions.

Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.