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UCC2813N-4
Product Overview
Category
UCC2813N-4 belongs to the category of integrated circuits (ICs).
Use
This IC is commonly used in power management applications.
Characteristics
- UCC2813N-4 is a high-performance current-mode PWM controller.
- It operates at a fixed frequency and provides precise control over the output voltage.
- The device incorporates various protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.
- It is designed to operate with both primary-side and secondary-side regulation.
Package
UCC2813N-4 is available in a standard 8-pin dual in-line package (DIP).
Essence
The essence of UCC2813N-4 lies in its ability to regulate power efficiently and reliably in various applications.
Packaging/Quantity
UCC2813N-4 is typically packaged in reels or tubes, with quantities varying based on customer requirements.
Specifications
- Input Voltage Range: 10V to 30V
- Output Voltage Range: 0V to 5V
- Operating Temperature Range: -40°C to +85°C
- Maximum Duty Cycle: 100%
- Switching Frequency: 100kHz to 500kHz
- Output Current: Up to 1A
Pin Configuration
UCC2813N-4 features the following pin configuration:
- VREF: Reference voltage input
- COMP: Error amplifier output
- CS: Current sense input
- GND: Ground
- RT/CT: Timing resistor/capacitor connection
- VCC: Supply voltage input
- OUT: Power switch output
- FB: Feedback voltage input
Functional Features
- Current-mode control for improved stability and transient response.
- Adjustable soft-start feature to limit inrush current during startup.
- Error amplifier with high gain and low offset voltage for accurate regulation.
- Overvoltage protection to prevent damage to the load.
- Undervoltage lockout to ensure proper operation under low input voltage conditions.
- Thermal shutdown to protect the IC from excessive temperature.
Advantages and Disadvantages
Advantages
- High-performance current-mode control for precise regulation.
- Wide input voltage range allows for versatile applications.
- Comprehensive protection features enhance system reliability.
- Compact 8-pin package facilitates easy integration into various designs.
Disadvantages
- Limited output current capability compared to higher-power devices.
- Fixed frequency operation may not be suitable for all applications requiring variable switching frequencies.
Working Principles
UCC2813N-4 operates based on the current-mode control principle. It compares the sensed current through the power switch with a reference voltage to generate an error signal. This error signal is then amplified and used to adjust the duty cycle of the PWM signal, which controls the power delivered to the load. By maintaining a stable output voltage, UCC2813N-4 ensures efficient power management.
Detailed Application Field Plans
UCC2813N-4 finds extensive application in various power management systems, including but not limited to: - Switching power supplies - Battery chargers - LED drivers - DC-DC converters - Motor control circuits
Detailed and Complete Alternative Models
Some alternative models that can be considered as alternatives to UCC2813N-4 are: - UC3843: A similar current-mode PWM controller with higher output current capability. - TL494: A versatile PWM controller offering additional features like dead-time control and synchronization. - SG3525: A popular choice for power supply applications, providing adjustable frequency and duty cycle control.
These alternative models offer different specifications and features, allowing designers to choose the most suitable option for their specific requirements.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací UCC2813N-4 v technických řešeních
Sure! Here are 10 common questions and answers related to the application of UCC2813N-4 in technical solutions:
Q: What is UCC2813N-4? A: UCC2813N-4 is a voltage mode PWM controller IC used for controlling power supply circuits.
Q: What are the key features of UCC2813N-4? A: Some key features include low start-up current, internal soft-start, cycle-by-cycle current limiting, and adjustable frequency operation.
Q: How does UCC2813N-4 help in power supply applications? A: UCC2813N-4 provides control and regulation of the power supply output voltage, ensuring stable and efficient operation.
Q: Can UCC2813N-4 be used in both AC-DC and DC-DC power supply designs? A: Yes, UCC2813N-4 can be used in both AC-DC and DC-DC power supply designs, making it versatile for various applications.
Q: What is the maximum input voltage that UCC2813N-4 can handle? A: UCC2813N-4 can handle a maximum input voltage of up to 30V.
Q: How does the soft-start feature of UCC2813N-4 benefit power supply designs? A: The soft-start feature gradually ramps up the output voltage during startup, preventing excessive inrush current and improving system reliability.
Q: Can UCC2813N-4 provide protection against overcurrent conditions? A: Yes, UCC2813N-4 has cycle-by-cycle current limiting, which protects against overcurrent conditions by regulating the duty cycle.
Q: Is UCC2813N-4 suitable for high-frequency switching applications? A: Yes, UCC2813N-4 can operate at adjustable frequencies up to 1MHz, making it suitable for high-frequency switching applications.
Q: Can UCC2813N-4 be used in battery charging circuits? A: Yes, UCC2813N-4 can be used in battery charging circuits by controlling the charging voltage and current.
Q: Are there any application notes or reference designs available for UCC2813N-4? A: Yes, Texas Instruments provides application notes and reference designs that can help in implementing UCC2813N-4 in various technical solutions.
Please note that the answers provided here are general and may vary depending on specific design requirements and application scenarios. It is always recommended to refer to the datasheet and relevant documentation for accurate information.