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UCC28516N - English Editing Encyclopedia Entry
Product Overview
Category
UCC28516N 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
- UCC28516N is a high-performance synchronous rectifier controller.
- It operates at a wide input voltage range, making it suitable for different power supply designs.
- The IC offers excellent efficiency and low power dissipation.
- It provides protection features such as overvoltage, undervoltage, and overcurrent protection.
- UCC28516N supports both continuous and discontinuous conduction modes.
Package
The UCC28516N IC is available in a standard 8-pin SOIC (Small Outline Integrated Circuit) package.
Essence
The essence of UCC28516N lies in its ability to efficiently control the synchronous rectification process in power management applications.
Packaging/Quantity
UCC28516N is typically sold in reels containing 2500 units per reel.
Specifications
- Input Voltage Range: 4.5V to 28V
- Output Voltage Range: Up to 28V
- Maximum Operating Frequency: 1MHz
- Quiescent Current: 100µA (typical)
- Operating Temperature Range: -40°C to +125°C
Detailed Pin Configuration
- VIN: Input voltage pin
- GND: Ground reference pin
- FB: Feedback pin for output voltage regulation
- COMP: Compensation pin for loop stability
- EN: Enable pin for turning the IC on/off
- SS: Soft-start pin for controlling start-up behavior
- CS: Current sense pin for monitoring the output current
- VCC: Supply voltage pin for internal circuitry
Functional Features
- Synchronous rectification control with adaptive dead-time optimization.
- Adjustable output voltage regulation through feedback loop.
- Soft-start functionality for controlled start-up.
- Overvoltage, undervoltage, and overcurrent protection mechanisms.
- Integrated gate drivers for external MOSFETs.
Advantages and Disadvantages
Advantages
- High efficiency and low power dissipation.
- Wide input voltage range allows for versatile applications.
- Comprehensive protection features enhance system reliability.
- Compact 8-pin SOIC package facilitates easy integration.
Disadvantages
- Limited maximum operating frequency compared to some alternative models.
- Requires external MOSFETs for synchronous rectification.
Working Principles
UCC28516N operates by controlling the timing of synchronous rectification in a power supply system. It utilizes an adaptive dead-time optimization technique to minimize power losses during switching transitions. The IC regulates the output voltage by adjusting the duty cycle of the synchronous rectifier based on the feedback received from the FB pin. Additionally, it incorporates various protection mechanisms to safeguard the system against voltage spikes, current surges, and other potential faults.
Detailed Application Field Plans
UCC28516N finds extensive application in the following areas:
- Switch-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial machinery.
- Battery chargers for portable devices, electric vehicles, and renewable energy systems.
- LED drivers for lighting applications, including residential, commercial, and automotive lighting.
Detailed and Complete Alternative Models
- UCC24610: A similar synchronous rectifier controller with higher maximum operating frequency.
- UCC28600: An integrated flyback controller with synchronous rectification capability.
- UCC28070: A versatile power factor correction (PFC) controller with synchronous rectification support.
These alternative models offer different features and specifications, providing flexibility for various power management applications.
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Liste 10 perguntas e respostas comuns relacionadas à aplicação de UCC28516N em soluções técnicas
Sure! Here are 10 common questions and answers related to the application of UCC28516N in technical solutions:
Q: What is UCC28516N? A: UCC28516N is a high-performance, active power factor correction (PFC) controller designed for AC-DC power supplies.
Q: What are the key features of UCC28516N? A: Some key features include wide input voltage range, high power factor, low THD, cycle-by-cycle current limit, and integrated protection features.
Q: How does UCC28516N achieve power factor correction? A: UCC28516N uses a boost converter topology along with control algorithms to shape the input current waveform and improve power factor.
Q: What is the maximum input voltage that UCC28516N can handle? A: UCC28516N can handle an input voltage range from 85VAC to 265VAC.
Q: Can UCC28516N operate in continuous conduction mode (CCM)? A: Yes, UCC28516N supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) operation.
Q: Does UCC28516N have any built-in protection features? A: Yes, UCC28516N has built-in features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown protection.
Q: What is the typical efficiency of UCC28516N? A: The typical efficiency of UCC28516N can be around 95% or higher, depending on the specific application and operating conditions.
Q: Can UCC28516N be used in both single-phase and three-phase power supplies? A: Yes, UCC28516N can be used in both single-phase and three-phase power supply applications.
Q: What is the maximum switching frequency of UCC28516N? A: The maximum switching frequency of UCC28516N is typically around 200 kHz.
Q: Are there any reference designs available for UCC28516N? A: Yes, Texas Instruments provides various reference designs and application notes that can help in implementing UCC28516N in different technical solutions.
Please note that these answers are general and may vary depending on the specific application and design considerations. It is always recommended to refer to the datasheet and application notes provided by the manufacturer for detailed information.