Texas Instruments
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UCC28911DR
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UCC28911DR

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High-performance synchronous rectifier controller - Designed for use in AC/DC power supplies - Provides high efficiency and low standby power consumption - Enables compact and cost-effective power supply designs

Package: SOIC-8

Essence: The UCC28911DR is a highly efficient synchronous rectifier controller that is widely used in AC/DC power supplies. It offers excellent performance, low power consumption, and enables the design of compact and cost-effective power supplies.

Packaging/Quantity: The UCC28911DR is available in a standard SOIC-8 package. It is typically sold in reels or tubes containing multiple units.

Specifications

  • Input Voltage Range: 4.5V to 28V
  • Output Voltage Range: 0V to 28V
  • Maximum Switching Frequency: 1MHz
  • Operating Temperature Range: -40°C to 125°C
  • Quiescent Current: 100µA (typical)
  • Output Current: Up to 2A

Detailed Pin Configuration

The UCC28911DR has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. FB: Feedback pin
  4. COMP: Compensation pin
  5. CS: Current sense pin
  6. SS/TR: Soft-start/Tracking pin
  7. VCC: Supply voltage pin
  8. SW: Switch node pin

Functional Features

  • Synchronous rectification control with adaptive dead-time optimization
  • Programmable soft-start and tracking functions
  • Overcurrent protection with adjustable current limit
  • Overvoltage protection with adjustable threshold
  • Undervoltage lockout (UVLO) protection
  • Thermal shutdown protection

Advantages and Disadvantages

Advantages: - High efficiency and low standby power consumption - Compact and cost-effective power supply designs - Wide input voltage range - Programmable features for flexibility - Comprehensive protection features

Disadvantages: - Limited output current (up to 2A) - Requires external components for complete power supply design

Working Principles

The UCC28911DR is designed to control the synchronous rectification process in AC/DC power supplies. It utilizes adaptive dead-time optimization to achieve high efficiency. The controller monitors the input and output voltages, adjusting the switching frequency and duty cycle accordingly. It also provides various protection features to ensure safe operation.

Detailed Application Field Plans

The UCC28911DR is commonly used in the following applications:

  1. AC/DC power supplies for consumer electronics
  2. Industrial power supplies
  3. LED lighting systems
  4. Telecom and networking equipment
  5. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the UCC28911DR are:

  1. UCC28910DR: Similar functionality with a different pin configuration
  2. UCC28912DR: Higher output current capability
  3. UCC28913DR: Lower quiescent current and wider operating temperature range

These alternative models offer similar features and can be suitable replacements depending on specific requirements.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق UCC28911DR في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of UCC28911DR in technical solutions:

  1. Q: What is UCC28911DR? A: UCC28911DR is a high-voltage flyback switcher IC designed for offline power supplies.

  2. Q: What are the key features of UCC28911DR? A: Some key features include wide input voltage range, integrated high-side and low-side MOSFETs, and advanced protection features.

  3. Q: What is the typical application of UCC28911DR? A: UCC28911DR is commonly used in applications such as AC-DC adapters, LED lighting, and industrial power supplies.

  4. Q: What is the maximum input voltage supported by UCC28911DR? A: The maximum input voltage supported by UCC28911DR is typically around 700V.

  5. Q: Can UCC28911DR operate in continuous conduction mode (CCM)? A: Yes, UCC28911DR can operate in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM).

  6. Q: Does UCC28911DR have built-in protection features? A: Yes, UCC28911DR has various protection features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.

  7. Q: What is the switching frequency range of UCC28911DR? A: The switching frequency range of UCC28911DR is typically between 20kHz and 200kHz.

  8. Q: Can UCC28911DR be synchronized with an external clock source? A: Yes, UCC28911DR supports synchronization with an external clock source for better system integration.

  9. Q: What is the maximum output power that UCC28911DR can handle? A: The maximum output power depends on the specific application and design considerations, but UCC28911DR can handle power levels up to several hundred watts.

  10. Q: Is UCC28911DR available in different package options? A: Yes, UCC28911DR is available in various package options such as SOIC-8 and PDIP-8 for ease of integration into different designs.

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