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UCC28780RTET
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UCC28780RTET - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Low standby power consumption - Wide input voltage range - Compact package size - Advanced protection features

Package: QFN (Quad Flat No-leads) package

Essence: UCC28780RTET is a power management IC designed for efficient energy conversion and power delivery in various applications.

Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

  • Input Voltage Range: 4.5V to 65V
  • Output Voltage Range: 3.3V to 24V
  • Maximum Output Current: 2A
  • Switching Frequency: 100kHz to 1MHz
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The UCC28780RTET IC has the following pin configuration:

  1. VDD: Power supply input
  2. GND: Ground reference
  3. FB: Feedback pin for output voltage regulation
  4. COMP: Compensation pin for stability control
  5. EN/UVLO: Enable/Undervoltage Lockout pin
  6. CS: Current sense pin for current regulation
  7. SS/TRISET: Soft-start/Tri-state pin for startup control
  8. VSENSE: Voltage sense pin for input voltage monitoring
  9. VOUT: Output voltage pin
  10. SW: Switch node pin for power transfer

Functional Features

  • High-efficiency synchronous rectification
  • Adaptive zero-voltage switching (ZVS)
  • Cycle-by-cycle peak current limit
  • Overvoltage and undervoltage protection
  • Thermal shutdown protection
  • Soft-start and shutdown control
  • Fault detection and reporting

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide input voltage range allows for versatile applications - Compact package size saves board space - Advanced protection features ensure system reliability - Adaptive ZVS improves power conversion efficiency

Disadvantages: - Limited maximum output current (2A) - Requires external components for complete power management solution

Working Principles

The UCC28780RTET is based on a flyback topology, which enables efficient energy conversion. It utilizes synchronous rectification and adaptive ZVS techniques to minimize power losses during switching transitions. The IC regulates the output voltage through feedback control, maintaining stable and accurate power delivery. Various protection mechanisms, such as overvoltage and undervoltage protection, ensure safe operation under different conditions.

Detailed Application Field Plans

The UCC28780RTET is suitable for a wide range of applications, including but not limited to: 1. Power adapters and chargers 2. LED lighting systems 3. Industrial power supplies 4. Telecom and networking equipment 5. Home appliances 6. Automotive electronics

Detailed and Complete Alternative Models

  1. UCC28781RTET: Similar to UCC28780RTET with enhanced features for higher power applications.
  2. UCC28782RTET: Lower power variant with reduced output current capability.
  3. UCC28783RTET: Integrated IC with additional features for improved system monitoring and control.

These alternative models provide flexibility in choosing the right IC based on specific application requirements.

Word Count: 452 words

10 سوال و پاسخ رایج مربوط به کاربرد UCC28780RTET در راه حل های فنی را فهرست کنید

Sure! Here are 10 common questions and answers related to the application of UCC28780RTET in technical solutions:

  1. Q: What is UCC28780RTET?
    A: UCC28780RTET is a highly integrated flyback controller IC designed for offline power supplies.

  2. Q: What are the key features of UCC28780RTET?
    A: Some key features include primary-side regulation, high-voltage startup, constant voltage/constant current control, and comprehensive protection features.

  3. Q: What are the typical applications of UCC28780RTET?
    A: UCC28780RTET is commonly used in applications such as USB PD adapters, chargers, power banks, and LED lighting.

  4. Q: How does UCC28780RTET achieve primary-side regulation?
    A: UCC28780RTET uses a proprietary constant on-time (COT) control scheme that eliminates the need for an optocoupler or secondary-side feedback circuitry.

  5. Q: Can UCC28780RTET support both constant voltage and constant current output?
    A: Yes, UCC28780RTET can be configured to provide either constant voltage or constant current output, making it suitable for various load types.

  6. Q: What is the maximum switching frequency supported by UCC28780RTET?
    A: The maximum switching frequency is 100 kHz, allowing for compact transformer and filter designs.

  7. Q: Does UCC28780RTET have built-in protection features?
    A: Yes, UCC28780RTET includes comprehensive protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.

  8. Q: Can UCC28780RTET operate in a wide input voltage range?
    A: Yes, UCC28780RTET supports a wide input voltage range from 4.5 V to 30 V, making it suitable for various power supply designs.

  9. Q: Is UCC28780RTET compatible with power factor correction (PFC) circuits?
    A: Yes, UCC28780RTET can be easily integrated with PFC circuits to achieve high power factor and comply with energy efficiency standards.

  10. Q: Are there any evaluation boards or reference designs available for UCC28780RTET?
    A: Yes, Texas Instruments provides evaluation boards and reference designs that help engineers quickly prototype and implement UCC28780RTET-based solutions.

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