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UCC2891D
Introduction
The UCC2891D is a member of the UCCx89xx family of resonant mode controllers designed for high-efficiency power supplies. This device offers a comprehensive set of features to enable efficient and reliable power supply designs.
Basic Information Overview
- Category: Power Management IC
- Use: Resonant Mode Controller for High-Efficiency Power Supplies
- Characteristics: High Efficiency, Comprehensive Features
- Package: SOIC-16
- Essence: Efficient Power Supply Control
- Packaging/Quantity: Tube/50 units per tube
Specifications
- Input Voltage Range: 4.5V to 30V
- Operating Temperature Range: -40°C to 125°C
- Switching Frequency: Up to 1MHz
- Output Current: Up to 2A
- Control Method: Resonant Mode Control
Detailed Pin Configuration
The UCC2891D features a 16-pin SOIC package with the following pin configuration:
1. VDD
2. RT/CLK
3. CS
4. SS/UVLO
5. GND
6. COMP
7. FB
8. VREF
9. VSENSE
10. VDD
11. VDD
12. VDD
13. VDD
14. VDD
15. VDD
16. VDD
Functional Features
- Resonant Mode Control
- Soft Start/UVLO
- Overcurrent Protection
- Overvoltage Protection
- Adaptive Dead Time Control
- Frequency Dithering
- Cycle-by-Cycle Current Limiting
Advantages and Disadvantages
Advantages
- High Efficiency
- Comprehensive Protection Features
- Adaptive Control for Enhanced Performance
Disadvantages
- Complex Implementation for Novice Designers
- Sensitive to External Component Selection
Working Principles
The UCC2891D operates on the principle of resonant mode control, which allows for efficient power conversion by minimizing switching losses. It utilizes adaptive control techniques to optimize performance under varying load conditions.
Detailed Application Field Plans
The UCC2891D is well-suited for various applications including:
- Server Power Supplies
- Telecom Power Systems
- LED Lighting
- Industrial Power Supplies
- Renewable Energy Systems
Detailed and Complete Alternative Models
Some alternative models to UCC2891D include:
- UCC28950
- UCC28951
- UCC28952
- UCC28953
In summary, the UCC2891D is a versatile resonant mode controller offering high efficiency and comprehensive features for power supply designs across various applications.
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What is UCC2891D?
- UCC2891D is a versatile, high-performance resonant mode controller designed for applications such as LLC resonant converters and wireless power transfer systems.
What are the key features of UCC2891D?
- The key features of UCC2891D include wide VCC operating range, adaptive dead-time control, frequency dithering for EMI reduction, and comprehensive fault protection.
How does UCC2891D help in LLC resonant converters?
- UCC2891D provides precise control over the resonant tank circuit, enabling efficient power conversion with reduced switching losses and improved overall system efficiency.
Can UCC2891D be used in wireless power transfer systems?
- Yes, UCC2891D is suitable for wireless power transfer systems due to its ability to drive resonant tanks efficiently and adapt to varying load conditions.
What is the input voltage range supported by UCC2891D?
- UCC2891D supports a wide input voltage range, typically from 4.5V to 30V, making it suitable for various power supply designs.
How does UCC2891D handle fault protection?
- UCC2891D incorporates comprehensive fault protection features such as overcurrent protection, overvoltage protection, and thermal shutdown to ensure system reliability.
Does UCC2891D support frequency dithering for EMI reduction?
- Yes, UCC2891D includes frequency dithering capability to minimize electromagnetic interference (EMI) and comply with regulatory standards.
What is adaptive dead-time control in UCC2891D?
- Adaptive dead-time control in UCC2891D optimizes the switching timing to minimize crossover losses and improve overall efficiency in resonant converter applications.
Can UCC2891D be used in high-power applications?
- Yes, UCC2891D is suitable for high-power applications, offering robust performance and efficient control over resonant circuits.
Where can I find detailed technical information about UCC2891D?
- Detailed technical information about UCC2891D can be found in the datasheet provided by the manufacturer, along with application notes and reference designs for specific use cases.