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UCC28501DWTR
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UCC28501DWTR

Product Overview

Category

UCC28501DWTR belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply systems, including switch-mode power supplies (SMPS), battery chargers, and LED drivers.

Characteristics

  • High efficiency: UCC28501DWTR offers excellent power conversion efficiency, reducing energy losses.
  • Wide input voltage range: It can operate with input voltages ranging from 4.5V to 75V, making it suitable for a wide range of applications.
  • Adjustable output voltage: The output voltage can be easily adjusted using external components.
  • Protection features: This IC incorporates various protection mechanisms such as overvoltage protection, overcurrent protection, and thermal shutdown.

Package

UCC28501DWTR is available in a small surface-mount package known as SOIC-16 (Small Outline Integrated Circuit). This package provides ease of handling and compatibility with automated assembly processes.

Essence

The essence of UCC28501DWTR lies in its ability to efficiently regulate and control power in various applications, ensuring stable and reliable operation.

Packaging/Quantity

UCC28501DWTR is typically supplied in reels containing 2500 units per reel.

Specifications

  • Input Voltage Range: 4.5V to 75V
  • Output Voltage Range: Adjustable
  • Maximum Output Current: 1A
  • Switching Frequency: Up to 1MHz
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

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

Functional Features

  • Voltage regulation: UCC28501DWTR provides precise voltage regulation, ensuring a stable output voltage even under varying load conditions.
  • Current limiting: It incorporates current sensing mechanisms to limit the output current, protecting the system from overcurrent situations.
  • Soft-start: The soft-start feature allows gradual ramp-up of the output voltage, reducing inrush current during startup.
  • Synchronization: The synchronization input enables synchronization with an external clock signal, facilitating coordination with other power management components.

Advantages and Disadvantages

Advantages

  • High efficiency leads to reduced power losses.
  • Wide input voltage range allows versatility in application.
  • Comprehensive protection features enhance system reliability.
  • Compact SOIC-16 package enables easy integration into designs.

Disadvantages

  • Limited maximum output current (1A) may not be suitable for high-power applications.
  • Requires external components for voltage adjustment and compensation.

Working Principles

UCC28501DWTR operates based on a pulse-width modulation (PWM) control scheme. It uses feedback from the output voltage to adjust the duty cycle of the internal power switch, regulating the output voltage. By continuously monitoring the output voltage and adjusting the duty cycle accordingly, it maintains a stable output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

UCC28501DWTR finds applications in various power management systems, including: - Switch-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial machinery. - Battery chargers for electric vehicles, portable devices, and renewable energy systems. - LED drivers for lighting applications, both residential and commercial.

Detailed and Complete Alternative Models

  1. UCC28501: Similar to UCC28501DWTR but available in a different package (PDIP-16).
  2. UCC28502: Higher maximum output current (2A) variant of UCC28501DWTR.
  3. UCC28503: Lower maximum output current (500mA) variant of UCC28501DWTR.

These alternative models offer similar functionality with slight variations in specifications and package options.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi UCC28501DWTR dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of UCC28501DWTR in technical solutions:

  1. Q: What is UCC28501DWTR? A: UCC28501DWTR is a high-performance, low-power current mode PWM controller used in various power supply applications.

  2. Q: What are the key features of UCC28501DWTR? 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 UCC28501DWTR? A: UCC28501DWTR is commonly used in offline flyback converters, LED drivers, battery chargers, and other power supply designs.

  4. Q: How does UCC28501DWTR help in achieving high efficiency? A: UCC28501DWTR incorporates a low-loss startup circuit, low quiescent current, and adaptive on-time control to improve overall power supply efficiency.

  5. Q: Can UCC28501DWTR operate in continuous conduction mode (CCM)? A: Yes, UCC28501DWTR can operate in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM) depending on the design requirements.

  6. Q: Does UCC28501DWTR have built-in protection features? A: Yes, UCC28501DWTR offers comprehensive protection features such as overvoltage protection, undervoltage lockout, thermal shutdown, and short-circuit protection.

  7. Q: What is the maximum switching frequency supported by UCC28501DWTR? A: The maximum switching frequency supported by UCC28501DWTR is typically around 1 MHz, but it can be adjusted based on the application requirements.

  8. Q: Can UCC28501DWTR be used in high-power applications? A: Yes, UCC28501DWTR can be used in a wide range of power applications, including those requiring high power levels, by selecting appropriate external components.

  9. Q: Is UCC28501DWTR suitable for automotive applications? A: No, UCC28501DWTR is not specifically designed for automotive applications and may not meet the required automotive standards.

  10. Q: Are there any evaluation boards or reference designs available for UCC28501DWTR? A: Yes, Texas Instruments provides evaluation boards and reference designs that can help users quickly prototype and implement UCC28501DWTR-based solutions.

Please note that these answers are general and may vary depending on specific design considerations and requirements.