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UCC28501N
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UCC28501N - English Editing Encyclopedia Entry

Product Overview

Category

UCC28501N belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

The UCC28501N is primarily used in power supply systems to regulate and control the flow of electrical power. It is commonly employed in various electronic devices, including computers, televisions, and industrial equipment.

Characteristics

  • The UCC28501N is a high-performance voltage mode PWM controller.
  • It operates with a wide input voltage range, making it suitable for diverse power supply designs.
  • This IC offers excellent line and load regulation, ensuring stable and reliable power delivery.
  • It features a comprehensive set of protection mechanisms, such as overvoltage and overcurrent protection, enhancing system safety.
  • The UCC28501N incorporates advanced control algorithms, enabling efficient power conversion.

Package and Essence

The UCC28501N is available in a compact and industry-standard 8-pin SOIC (Small Outline Integrated Circuit) package. Its small form factor allows for easy integration into various circuit designs.

Packaging/Quantity

The UCC28501N is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier and customer requirements.

Specifications

  • Input Voltage Range: 4.5V to 25V
  • Output Voltage Range: 0.8V to 5.5V
  • Maximum Output Current: 1A
  • Switching Frequency: 100kHz to 1MHz
  • Operating Temperature Range: -40°C to 125°C
  • Control Method: Voltage Mode PWM
  • Protection Features: Overvoltage, Overcurrent, Undervoltage Lockout

Detailed Pin Configuration

The UCC28501N features the following pin configuration:

  1. COMP: Compensation pin for external compensation network.
  2. FB: Feedback pin for regulating the output voltage.
  3. CS: Current sense pin for monitoring the output current.
  4. GND: Ground reference for the IC.
  5. VCC: Power supply input for the IC.
  6. RT/CT: Timing components connection for setting the switching frequency.
  7. SS/TR: Soft-start and tracking control pin.
  8. OUT: Output pin for connecting to the power stage.

Functional Features

  • Voltage Mode PWM Control: The UCC28501N utilizes a voltage mode control scheme, ensuring accurate regulation of the output voltage.
  • Wide Input Voltage Range: With an input voltage range of 4.5V to 25V, this IC can accommodate various power supply designs.
  • Comprehensive Protection Mechanisms: The UCC28501N incorporates overvoltage, overcurrent, and undervoltage lockout protection, safeguarding the system from potential faults.
  • Efficient Power Conversion: Advanced control algorithms enable high-efficiency power conversion, minimizing energy losses.
  • Compact Package: The small form factor of the 8-pin SOIC package allows for space-efficient integration into circuit designs.

Advantages and Disadvantages

Advantages

  • Wide input voltage range enables versatile power supply designs.
  • Excellent line and load regulation ensure stable power delivery.
  • Comprehensive protection mechanisms enhance system safety.
  • High-efficiency power conversion minimizes energy losses.
  • Compact package facilitates easy integration into circuits.

Disadvantages

  • Limited maximum output current (1A) may not be suitable for high-power applications.
  • Requires external compensation network for stability, adding complexity to the design.

Working Principles

The UCC28501N operates based on the voltage mode PWM control method. It compares the feedback voltage (FB) with a reference voltage to regulate the output voltage. By adjusting the duty cycle of the PWM signal, the IC controls the power switch to maintain the desired output voltage. The current sense (CS) pin monitors the output current, enabling overcurrent protection and accurate current regulation.

Detailed Application Field Plans

The UCC28501N finds applications in various fields, including: 1. Consumer Electronics: Power supplies for computers, televisions, audio systems, etc. 2. Industrial Equipment: Motor drives, control systems, lighting systems, etc. 3. Telecommunications: Power management in network equipment, routers, switches, etc. 4. Automotive: DC-DC converters, battery chargers, electric vehicle power systems, etc.

Detailed and Complete Alternative Models

  1. UCC28500N: Similar to UCC28501N with a lower maximum output current of 500mA.
  2. UCC28502N: Similar to UCC28501N with a higher maximum output current of 2A.
  3. UCC28503N: Similar to UCC28501N with additional features such as adjustable soft-start and synchronization capability.

Note: This is not an exhaustive list, and there may be other alternative models available from different

10 domande e risposte comuni relative all'applicazione di UCC28501N nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of UCC28501N in technical solutions:

  1. Q: What is UCC28501N? A: UCC28501N is a high-performance, low-power current mode PWM controller used in power supply applications.

  2. Q: What are the key features of UCC28501N? A: Some key features include wide input voltage range, adjustable switching frequency, cycle-by-cycle current limit, and integrated soft-start.

  3. Q: What is the typical application of UCC28501N? A: UCC28501N is commonly used in offline flyback converters, LED drivers, battery chargers, and other power supply designs.

  4. Q: How does UCC28501N achieve cycle-by-cycle current limit? A: UCC28501N utilizes a current sense resistor and an internal comparator to monitor the current flowing through the power MOSFET, enabling precise current limiting.

  5. Q: Can UCC28501N operate with a wide input voltage range? A: Yes, UCC28501N can typically operate with an input voltage range from 4.5V to 65V, making it suitable for various applications.

  6. Q: Is UCC28501N capable of adjustable switching frequency? A: Yes, UCC28501N allows users to adjust the switching frequency within a certain range to optimize efficiency and performance.

  7. Q: Does UCC28501N have integrated protection features? A: Yes, UCC28501N includes features like overvoltage protection, undervoltage lockout, thermal shutdown, and short-circuit protection.

  8. Q: Can UCC28501N be used in high-power applications? A: While UCC28501N is primarily designed for low-power applications, it can be used in higher power designs by using external components like MOSFETs and transformers.

  9. Q: Are there any evaluation boards available for UCC28501N? A: Yes, Texas Instruments provides evaluation boards and reference designs for UCC28501N to help users quickly prototype their power supply solutions.

  10. Q: Where can I find more information about UCC28501N? A: You can refer to the datasheet, application notes, and technical resources provided by Texas Instruments or consult with their technical support team for detailed information on UCC28501N.