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UCC2817D - English Editing Encyclopedia Entry
Product Overview
Category
UCC2817D belongs to the category of integrated circuits (ICs).
Use
This product is commonly used in power management applications.
Characteristics
- UCC2817D is a high-performance pulse width modulation (PWM) controller.
- It offers precise control over power delivery and regulation.
- The device operates at a wide input voltage range, making it suitable for various applications.
- UCC2817D provides protection features such as overvoltage and overcurrent protection.
Package and Quantity
UCC2817D is available in a standard 8-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels containing a quantity of 250 units.
Specifications
- Input Voltage Range: 4.5V to 16V
- Output Voltage Range: 0V to VCC
- Operating Temperature Range: -40°C to 85°C
- Maximum Duty Cycle: 100%
- Switching Frequency Range: 50kHz to 1MHz
Pin Configuration
The UCC2817D IC has the following pin configuration:
```
| | --| VCC GND |-- Pin 1: Ground (GND) --| COMP FB |-- Pin 2: Feedback (FB) --| CS RT |-- Pin 3: Current Sense (CS) --| SS CT |-- Pin 4: Soft Start (SS) --| OUT INV |-- Pin 5: Inverting Output (INV) --| NC NC |-- Pin 6: Not Connected (NC) --| RT/CT REF |-- Pin 7: Reference for RT and CT --| VREF EN |-- Pin 8: Enable (EN) |___________| ```
Functional Features
- UCC2817D provides precise control over the duty cycle of the output waveform.
- It offers adjustable soft-start functionality to limit inrush current during startup.
- The device incorporates a current sense amplifier for accurate current monitoring.
- UCC2817D includes an error amplifier and voltage reference for precise regulation.
- It features an enable pin for easy on/off control.
Advantages and Disadvantages
Advantages
- High-performance PWM controller with precise power regulation.
- Wide input voltage range allows for versatile applications.
- Protection features ensure safe operation.
- Adjustable soft-start functionality reduces inrush current.
Disadvantages
- Limited to 8-pin SOIC package, which may not be suitable for all designs.
- May require additional external components for specific applications.
Working Principles
UCC2817D operates based on the principle of pulse width modulation (PWM). It generates a square wave output with a variable duty cycle, controlling the average power delivered to the load. By adjusting the duty cycle, the output voltage can be regulated. The device compares the feedback voltage with a reference voltage and adjusts the duty cycle accordingly to maintain the desired output voltage.
Application Field Plans
UCC2817D finds applications in various fields, including: 1. Switching power supplies 2. DC-DC converters 3. Battery chargers 4. LED lighting systems 5. Motor control circuits
Alternative Models
Some alternative models that offer similar functionality to UCC2817D are: 1. UC3842 2. TL494 3. SG3525 4. LT1241 5. MC34063
These models can be considered as alternatives depending on specific requirements and design constraints.
In conclusion, UCC2817D is a high-performance PWM controller used in power management applications. Its precise regulation, wide input voltage range, and protection features make it suitable for various designs. However, designers should consider alternative models based on their specific requirements.
Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van UCC2817D in technische oplossingen
Sure! Here are 10 common questions and answers related to the application of UCC2817D in technical solutions:
Q: What is UCC2817D? A: UCC2817D is a pulse width modulation (PWM) controller IC used for controlling power converters in various applications.
Q: What are the key features of UCC2817D? A: Some key features of UCC2817D include adjustable frequency, soft-start capability, cycle-by-cycle current limiting, and overvoltage protection.
Q: How does UCC2817D help in power converter designs? A: UCC2817D provides precise control over the switching frequency and duty cycle of power converters, ensuring efficient power transfer and regulation.
Q: Can UCC2817D be used in both buck and boost converter designs? A: Yes, UCC2817D can be used in both buck and boost converter designs, as well as in other topologies like flyback and forward converters.
Q: What is the maximum operating voltage range of UCC2817D? A: The maximum operating voltage range of UCC2817D is typically between 8V and 35V.
Q: Does UCC2817D have built-in protection features? A: Yes, UCC2817D has built-in protection features such as overvoltage protection, cycle-by-cycle current limiting, and thermal shutdown.
Q: Can UCC2817D operate at high switching frequencies? A: Yes, UCC2817D can operate at high switching frequencies, typically up to several hundred kilohertz.
Q: Is UCC2817D suitable for low-power applications? A: Yes, UCC2817D is suitable for low-power applications as it has a low quiescent current and can operate in pulse skipping mode to improve efficiency.
Q: Can UCC2817D be used in battery-powered systems? A: Yes, UCC2817D can be used in battery-powered systems as it has a wide input voltage range and low power consumption.
Q: Are there any application notes or reference designs available for UCC2817D? A: Yes, Texas Instruments provides application notes and reference designs that showcase the use of UCC2817D in various power converter applications.
Please note that the answers provided here are general and may vary depending on specific design requirements and application scenarios. It's always recommended to refer to the datasheet and application notes provided by the manufacturer for detailed information.