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UCC28514DW
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UCC28514DW

Product Overview

Category

UCC28514DW belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

  • UCC28514DW is a high-performance synchronous rectifier controller.
  • It operates at a wide input voltage range, making it suitable for various power supply designs.
  • The device incorporates advanced features such as adaptive dead-time control and cycle-by-cycle current limit.
  • It offers excellent efficiency and reliability in power conversion applications.

Package

UCC28514DW is available in a small outline package (SOIC) with 16 pins.

Essence

The essence of UCC28514DW lies in its ability to efficiently control synchronous rectification in power management systems.

Packaging/Quantity

UCC28514DW is typically sold in reels or tubes containing multiple units. The exact quantity depends on the supplier and customer requirements.

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
  • Supply Current: 2mA (typical)

Pin Configuration

UCC28514DW features the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground reference pin
  3. VREF: Reference voltage output pin
  4. COMP: Error amplifier compensation pin
  5. FB: Feedback voltage input pin
  6. SS/TR: Soft-start/tracking pin
  7. SYNC: Synchronization input pin
  8. RT/CT: Timing resistor/capacitor connection pin
  9. CS: Current sense input pin
  10. DRVH: High-side gate driver output pin
  11. DRVL: Low-side gate driver output pin
  12. VCC: Supply voltage input pin
  13. PGND: Power ground reference pin
  14. SS/TR: Soft-start/tracking pin
  15. SYNC: Synchronization input pin
  16. EN/UVLO: Enable/undervoltage lockout pin

Functional Features

  • Adaptive dead-time control for optimal synchronous rectification performance.
  • Cycle-by-cycle current limit protection to ensure safe operation.
  • Adjustable soft-start and tracking functionality for controlled startup.
  • Synchronization input for system integration and timing alignment.
  • Enable/undervoltage lockout for enhanced safety and reliability.

Advantages and Disadvantages

Advantages

  • Wide input voltage range allows for versatile power supply designs.
  • Advanced features improve efficiency and reliability.
  • Compact package size enables space-saving PCB layouts.
  • High-performance characteristics ensure optimal power management.

Disadvantages

  • Limited availability of alternative models may restrict design flexibility.
  • Higher cost compared to some other rectifier controllers in the market.

Working Principles

UCC28514DW operates by controlling the switching of synchronous rectifiers in a power management system. It utilizes adaptive dead-time control, cycle-by-cycle current limit, and other advanced techniques to optimize efficiency and protect against faults. By accurately regulating the rectification process, it ensures reliable power conversion.

Detailed Application Field Plans

UCC28514DW finds applications in various fields, including but not limited to: - Switching power supplies - DC-DC converters - Battery charging systems - LED lighting drivers - Industrial automation equipment

Detailed and Complete Alternative Models

While UCC28514DW is a highly capable synchronous rectifier controller, there are alternative models available in the market that offer similar functionality. Some notable alternatives include: - UCC24610 - LTC3789 - IR1167

These alternative models can be considered based on specific design requirements and availability.

In conclusion, UCC28514DW is a high-performance synchronous rectifier controller used in power management applications. Its advanced features, wide input voltage range, and compact package make it an ideal choice for efficient and reliable power conversion. However, designers should also consider alternative models based on their specific needs.

Énumérez 10 questions et réponses courantes liées à l'application de UCC28514DW dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of UCC28514DW in technical solutions:

  1. Q: What is UCC28514DW? A: UCC28514DW is a high-performance, synchronous flyback controller IC designed for isolated power supply applications.

  2. Q: What are the key features of UCC28514DW? A: Some key features include wide input voltage range, constant voltage or constant current control, adjustable switching frequency, and integrated protection features.

  3. Q: What is the typical application of UCC28514DW? A: UCC28514DW is commonly used in applications such as power adapters, battery chargers, LED lighting, and industrial power supplies.

  4. Q: How does UCC28514DW achieve constant voltage or constant current control? A: UCC28514DW uses a feedback loop that adjusts the duty cycle of the power switch to maintain a constant output voltage or current.

  5. Q: Can UCC28514DW operate with a wide input voltage range? A: Yes, UCC28514DW can typically operate with an input voltage range of 4.5V to 65V, making it suitable for various power supply designs.

  6. Q: Is UCC28514DW capable of adjustable switching frequency? A: Yes, UCC28514DW allows the user to adjust the switching frequency within a certain range to optimize efficiency and performance.

  7. Q: What protection features are integrated into UCC28514DW? A: UCC28514DW includes features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown to safeguard the system.

  8. Q: Can UCC28514DW be used in both isolated and non-isolated power supply designs? A: Yes, UCC28514DW is primarily designed for isolated power supplies but can also be used in non-isolated applications.

  9. Q: What are the advantages of using UCC28514DW in power supply designs? A: Some advantages include high efficiency, compact size, flexible control options, and reliable protection features.

  10. Q: Are there any application notes or reference designs available for UCC28514DW? A: Yes, Texas Instruments provides application notes and reference designs that can help users implement UCC28514DW effectively in their designs.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios. It's always recommended to refer to the datasheet and relevant documentation for accurate information.