UCC28500DWG4
Overview
Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: - High-performance synchronous rectifier controller - Designed for use in isolated and non-isolated power supplies - Provides high efficiency and low standby power consumption - Offers protection features such as overvoltage, undervoltage, and overcurrent protection
Package: SOIC (Small Outline Integrated Circuit)
Essence: The UCC28500DWG4 is a versatile IC that enables efficient power management in various applications.
Packaging/Quantity: The UCC28500DWG4 is typically sold in reels of 2500 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
- Package Type: SOIC-8
Pin Configuration
The UCC28500DWG4 has the following pin configuration:
```
| | --| VDD GND |-- Pin 1: Ground (GND) --| FB EN |-- Pin 2: Enable (EN) --| COMP CS |-- Pin 3: Current Sense (CS) --| SS RT |-- Pin 4: Soft Start (SS) --| VREF OUT |-- Pin 5: Output (OUT) --| UVLO VIN |-- Pin 6: Input Voltage (VIN) --| SYNC NC |-- Pin 7: Not Connected (NC) --| NC |-- Pin 8: Not Connected (NC) |___________| ```
Functional Features
- Synchronous rectification control for improved efficiency
- Adaptive dead-time control for optimal switching performance
- Programmable soft-start to reduce inrush current
- Overvoltage protection (OVP) and undervoltage lockout (UVLO)
- Overcurrent protection (OCP) with adjustable threshold
Advantages
- High efficiency due to synchronous rectification control
- Wide input voltage range allows for versatile applications
- Protection features ensure safe operation of power supplies
- Compact SOIC package enables space-saving designs
Disadvantages
- Limited maximum output voltage range (up to 28V)
- Requires external components for complete power supply implementation
- Not suitable for high-power applications due to its small package size
Working Principles
The UCC28500DWG4 is a synchronous rectifier controller that regulates the power flow in isolated and non-isolated power supplies. It utilizes adaptive dead-time control and programmable soft-start to optimize switching performance and reduce inrush current.
The IC monitors the input voltage, output voltage, and current sense signals to provide overvoltage, undervoltage, and overcurrent protection. By controlling the switching frequency and duty cycle, it ensures efficient power transfer from the input to the output.
Detailed Application Field Plans
The UCC28500DWG4 can be used in various power management applications, including but not limited to: - AC/DC power supplies - DC/DC converters - LED lighting systems - Industrial automation equipment - Telecommunications devices
Detailed and Complete Alternative Models
- UCC28500DR: Similar specifications and features, available in an SOIC-8 package.
- UCC28501DW: Higher maximum output voltage range (up to 36V), available in an SOIC-8 package.
- UCC28502DW: Lower maximum output voltage range (up to 20V), available in an SOIC-8 package.
- UCC28503DW: Dual-channel synchronous rectifier controller, available in an SOIC-8 package.
These alternative models offer similar functionality and can be considered based on specific application requirements.
Note: The above information is subject to change. Please refer to the manufacturer's datasheet for the most up-to-date specifications and details.
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רשום 10 שאלות ותשובות נפוצות הקשורות ליישום של UCC28500DWG4 בפתרונות טכניים
Sure! Here are 10 common questions and answers related to the application of UCC28500DWG4 in technical solutions:
Q: What is UCC28500DWG4? A: UCC28500DWG4 is a high-performance, low-power current mode PWM controller used for various power supply applications.
Q: What are the key features of UCC28500DWG4? A: Some key features include wide input voltage range, adjustable switching frequency, cycle-by-cycle current limit, and integrated soft-start.
Q: What are the typical applications of UCC28500DWG4? A: UCC28500DWG4 is commonly used in offline flyback converters, LED lighting, battery chargers, and other power supply designs.
Q: How does UCC28500DWG4 help in achieving high efficiency? A: UCC28500DWG4 incorporates advanced control techniques like frequency foldback and valley switching to optimize efficiency at light loads.
Q: Can UCC28500DWG4 operate with both AC and DC inputs? A: Yes, UCC28500DWG4 can operate with both AC and DC inputs, making it suitable for universal input power supplies.
Q: Does UCC28500DWG4 have built-in protection features? A: Yes, UCC28500DWG4 provides comprehensive protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.
Q: How can I adjust the switching frequency of UCC28500DWG4? A: The switching frequency can be adjusted by changing the value of an external resistor connected to the RT pin of the IC.
Q: Can UCC28500DWG4 support synchronous rectification? A: Yes, UCC28500DWG4 can support synchronous rectification by using an external MOSFET.
Q: What is the maximum output power that UCC28500DWG4 can handle? A: UCC28500DWG4 can handle output powers up to several hundred watts, depending on the specific application and design considerations.
Q: Are there any evaluation boards or reference designs available for UCC28500DWG4? A: Yes, Texas Instruments provides evaluation boards and reference designs that can help in quickly prototyping and implementing UCC28500DWG4-based solutions.
Please note that these answers are general and may vary based on specific design requirements and application scenarios.