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UCC28521DWRG4
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UCC28521DWRG4 - English Editing Encyclopedia Entry

Product Overview

Category

UCC28521DWRG4 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

  • UCC28521DWRG4 is a high-performance synchronous rectifier controller.
  • It operates at a wide input voltage range, making it suitable for various power supply designs.
  • The IC offers excellent efficiency and low power dissipation.
  • It provides protection features such as overcurrent and overvoltage protection.

Package

UCC28521DWRG4 comes in a standard SOIC-16 package.

Essence

The essence of UCC28521DWRG4 lies in its ability to efficiently control synchronous rectification in power management systems.

Packaging/Quantity

This IC is typically sold in reels containing 2500 units.

Specifications

  • Input Voltage Range: 4.5V to 28V
  • Output Voltage Range: 0V to 28V
  • Maximum Operating Frequency: 1MHz
  • Operating Temperature Range: -40°C to 125°C
  • Package Type: SOIC-16

Detailed Pin Configuration

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. VCC: Power supply pin
  4. FB: Feedback pin
  5. COMP: Compensation pin
  6. SS/TR: Soft-start/Tracking pin
  7. EN: Enable pin
  8. SYNC: Synchronization pin
  9. PGND: Power ground pin
  10. DRVH: High-side driver output pin
  11. DRVL: Low-side driver output pin
  12. BST: Bootstrap pin
  13. CS: Current sense pin
  14. OCSET: Overcurrent threshold setting pin
  15. UVLO: Undervoltage lockout pin
  16. VREF: Reference voltage pin

Functional Features

  • Synchronous rectification control for improved efficiency.
  • Adaptive dead-time control to minimize power losses.
  • Adjustable soft-start and tracking functions.
  • Overcurrent protection with adjustable threshold.
  • Undervoltage lockout for reliable operation.

Advantages and Disadvantages

Advantages

  • High-performance synchronous rectifier controller.
  • Wide input voltage range allows versatile power supply designs.
  • Excellent efficiency and low power dissipation.
  • Provides various protection features.

Disadvantages

  • Limited operating temperature range (-40°C to 125°C).
  • Requires external components for complete power management system implementation.

Working Principles

UCC28521DWRG4 operates by controlling the synchronous rectification process in power management systems. It utilizes adaptive dead-time control and adjustable soft-start functions to optimize efficiency and reduce power losses. The IC also incorporates overcurrent protection and undervoltage lockout mechanisms to ensure safe and reliable operation.

Detailed Application Field Plans

UCC28521DWRG4 finds applications in various power management systems, including but not limited to: - Switching power supplies - DC-DC converters - LED lighting systems - Industrial automation equipment - Telecommunications infrastructure

Detailed and Complete Alternative Models

  1. UCC28520DWRG4
  2. UCC28522DWRG4
  3. UCC28523DWRG4
  4. UCC28524DWRG4
  5. UCC28525DWRG4

These alternative models offer similar functionality and characteristics to UCC28521DWRG4, providing flexibility in design choices for power management applications.

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Énumérez 10 questions et réponses courantes liées à l'application de UCC28521DWRG4 dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of UCC28521DWRG4 in technical solutions:

  1. Q: What is UCC28521DWRG4? A: UCC28521DWRG4 is a high-performance, low-power current mode PWM controller used for various power supply applications.

  2. Q: What are the key features of UCC28521DWRG4? A: Some key features include wide input voltage range, adjustable switching frequency, cycle-by-cycle current limit, and integrated soft-start.

  3. Q: What is the typical application of UCC28521DWRG4? A: UCC28521DWRG4 is commonly used in offline flyback converters, LED lighting drivers, and other isolated or non-isolated power supply designs.

  4. Q: How does UCC28521DWRG4 help in improving power supply efficiency? A: UCC28521DWRG4 incorporates advanced control techniques like valley switching and frequency foldback to optimize power conversion efficiency.

  5. Q: Can UCC28521DWRG4 operate with both AC and DC inputs? A: Yes, UCC28521DWRG4 can operate with both AC and DC inputs, making it suitable for universal input power supplies.

  6. Q: Does UCC28521DWRG4 have built-in protection features? A: Yes, UCC28521DWRG4 provides comprehensive protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.

  7. Q: What is the maximum output power that UCC28521DWRG4 can handle? A: The maximum output power depends on the specific design and external components used with UCC28521DWRG4. It can handle power levels up to several hundred watts.

  8. Q: Can UCC28521DWRG4 be used in battery charging applications? A: Yes, UCC28521DWRG4 can be used in battery charging applications by implementing appropriate control and feedback mechanisms.

  9. Q: Is UCC28521DWRG4 suitable for high-frequency switching applications? A: Yes, UCC28521DWRG4 supports high-frequency operation, typically up to a few hundred kilohertz, making it suitable for compact and efficient designs.

  10. Q: Are there any evaluation boards or reference designs available for UCC28521DWRG4? A: Yes, Texas Instruments provides evaluation boards and reference designs that help users quickly prototype and implement UCC28521DWRG4-based solutions.

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