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UCC28250PW
Product Overview
The UCC28250PW is a voltage mode PWM controller belonging to the category of power management integrated circuits (ICs). It is commonly used in power supply applications and exhibits characteristics such as high efficiency, precise regulation, and robust performance. The package type for the UCC28250PW is a TSSOP-16, and it is available in various quantities per package.
Specifications
- Input Voltage Range: 4.5V to 30V
- Output Voltage Range: 0.8V to 5.5V
- Oscillator Frequency: 100kHz to 1MHz
- Operating Temperature Range: -40°C to 125°C
- Package Type: TSSOP-16
Detailed Pin Configuration
The UCC28250PW features a 16-pin TSSOP package with pins designated for functions such as feedback, compensation, error amplifier, soft start, and power supply connections. A detailed pinout diagram is provided in the product datasheet.
Functional Features
The UCC28250PW offers precise voltage regulation, overcurrent protection, and soft start functionality. It also includes a programmable oscillator, adjustable dead time control, and a wide input voltage range, making it suitable for diverse power supply designs.
Advantages and Disadvantages
Advantages
- High efficiency
- Wide input voltage range
- Precise regulation
- Robust performance
- Overcurrent protection
Disadvantages
- Limited output voltage range
- Requires external components for full functionality
Working Principles
The UCC28250PW operates on the principle of voltage mode control, where the output voltage is compared to a reference voltage to generate an error signal. This error signal is then used to adjust the duty cycle of the PWM signal, regulating the output voltage.
Detailed Application Field Plans
The UCC28250PW is well-suited for various power supply applications, including: - DC-DC converters - LED drivers - Industrial power supplies - Telecommunication equipment - Automotive electronics
Detailed and Complete Alternative Models
Some alternative models to the UCC28250PW include: - UCC28250PWR - UCC28250MDREP - UCC28250DR - UCC28250D
In conclusion, the UCC28250PW is a versatile voltage mode PWM controller with a wide range of applications in power supply designs. Its high efficiency, precise regulation, and robust performance make it a popular choice for engineers seeking reliable power management solutions.
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10 domande e risposte comuni relative all'applicazione di UCC28250PW nelle soluzioni tecniche
What is the UCC28250PW?
- The UCC28250PW is a current-mode PWM controller designed for high-power-density applications, such as AC-DC power supplies and DC-DC converters.
What is the input voltage range of the UCC28250PW?
- The UCC28250PW has an input voltage range of 4.5V to 30V, making it suitable for various power supply designs.
What is the maximum switching frequency of the UCC28250PW?
- The UCC28250PW can operate at a maximum switching frequency of 2 MHz, allowing for efficient power conversion in high-frequency applications.
What are the key features of the UCC28250PW?
- Some key features of the UCC28250PW include cycle-by-cycle current limiting, adjustable soft start, and overvoltage protection, making it versatile for different power supply requirements.
How does the UCC28250PW help improve power supply efficiency?
- The UCC28250PW's current-mode control architecture and adaptive on-time control scheme contribute to improved power supply efficiency by optimizing the switching frequency based on load conditions.
Can the UCC28250PW be used in flyback converter designs?
- Yes, the UCC28250PW is suitable for flyback converter designs, offering flexibility and performance in various isolated power supply applications.
What are the typical applications of the UCC28250PW?
- Typical applications of the UCC28250PW include LED lighting, industrial power supplies, telecom and networking equipment, and automotive power systems.
How does the UCC28250PW handle overcurrent protection?
- The UCC28250PW incorporates cycle-by-cycle current limiting to provide robust overcurrent protection, ensuring safe and reliable operation in the presence of load transients.
What are the design considerations when using the UCC28250PW in a power supply?
- Design considerations include component selection, layout optimization, and thermal management to maximize the performance and reliability of the power supply.
Where can I find detailed application notes and reference designs for the UCC28250PW?
- Detailed application notes and reference designs for the UCC28250PW can be found on the manufacturer's website or through authorized distributors, providing valuable resources for implementing the device in technical solutions.