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UCC2813PW-4
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UCC2813PW-4

Product Overview

Category

UCC2813PW-4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in power management applications.

Characteristics

  • UCC2813PW-4 is a high-performance current-mode PWM controller.
  • It operates at a fixed frequency and provides precise control over power delivery.
  • The device offers protection features such as overvoltage, undervoltage, and overcurrent protection.
  • It is designed to operate in a wide range of input voltages, making it suitable for various power supply designs.

Package

UCC2813PW-4 comes in a standard 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of UCC2813PW-4 lies in its ability to regulate and control power delivery efficiently and reliably.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Input Voltage Range: 7V to 25V
  • Output Voltage Range: 0.8V to 5.5V
  • Operating Temperature Range: -40°C to 85°C
  • Switching Frequency: 100kHz to 1MHz
  • Maximum Duty Cycle: 90%
  • Quiescent Current: 2mA

Pin Configuration

UCC2813PW-4 has the following pin configuration:

  1. COMP: Compensation pin for external compensation network.
  2. CS: Current sense input for current-mode control.
  3. VFB: Feedback voltage input for regulating the output voltage.
  4. GND: Ground reference for the IC.
  5. RT/CT: Timing resistor/capacitor connection for setting the switching frequency.
  6. VCC: Power supply input for the IC.
  7. OUT: Output pin for driving external power MOSFET.
  8. SS/TR: Soft-start/Shutdown control pin.

Functional Features

  • Current-mode control for precise regulation of power delivery.
  • Fixed frequency operation for consistent performance.
  • Overvoltage protection to safeguard the system from excessive voltage levels.
  • Undervoltage lockout to prevent operation below a specified voltage threshold.
  • Overcurrent protection to limit the output current during fault conditions.
  • Soft-start feature to gradually ramp up the output voltage during startup.

Advantages and Disadvantages

Advantages

  • High-performance current-mode control ensures accurate power regulation.
  • Wide input voltage range allows for versatile power supply designs.
  • Protection features enhance system reliability and safety.
  • Compact 8-pin SOIC package facilitates easy integration into various applications.

Disadvantages

  • Limited maximum duty cycle may restrict certain power supply designs.
  • Operating temperature range might not be suitable for extreme environments.

Working Principles

UCC2813PW-4 operates based on the current-mode control principle. It compares the sensed current with a reference voltage to regulate the output voltage. The timing resistor and capacitor connected to the RT/CT pin determine the switching frequency. The feedback voltage at the VFB pin is compared with an internal reference to maintain the desired output voltage. The COMP pin allows for external compensation to optimize stability and response.

Detailed Application Field Plans

UCC2813PW-4 finds extensive application in various power management systems, including:

  1. Switching Power Supplies: Used in AC-DC and DC-DC converters for efficient power delivery.
  2. Battery Chargers: Enables controlled charging of batteries in portable devices and electric vehicles.
  3. LED Lighting: Provides precise current regulation for LED drivers, ensuring optimal brightness and efficiency.
  4. Industrial Power Systems: Utilized in motor drives, inverters, and other industrial power applications.
  5. Telecom Infrastructure: Used in power supplies for telecom equipment, ensuring reliable operation.

Detailed and Complete Alternative Models

  1. UCC2813-4: Similar to UCC2813PW-4 but available in a 14-pin TSSOP package.
  2. UCC3813-4: Offers enhanced features such as adjustable switching frequency and synchronization capability.
  3. UC3843: A popular alternative with similar functionality but different pin configuration (DIP-8 package).

These alternative models provide flexibility in choosing the most suitable solution based on specific application requirements.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av UCC2813PW-4 i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of UCC2813PW-4 in technical solutions:

  1. Q: What is UCC2813PW-4? A: UCC2813PW-4 is a pulse width modulation (PWM) controller IC used for controlling power supply circuits.

  2. Q: What are the key features of UCC2813PW-4? A: Some key features include adjustable frequency, soft-start capability, cycle-by-cycle current limiting, and overvoltage protection.

  3. Q: How does UCC2813PW-4 help in power supply applications? A: UCC2813PW-4 provides precise control over the switching frequency and duty cycle of power supply circuits, ensuring stable and efficient power delivery.

  4. Q: Can UCC2813PW-4 be used in both AC-DC and DC-DC converter designs? A: Yes, UCC2813PW-4 can be used in both AC-DC and DC-DC converter designs, making it versatile for various power supply applications.

  5. Q: What is the maximum operating voltage range of UCC2813PW-4? A: The maximum operating voltage range of UCC2813PW-4 is typically between 8V and 35V.

  6. Q: Does UCC2813PW-4 have built-in protection features? A: Yes, UCC2813PW-4 has built-in protection features such as overvoltage protection and cycle-by-cycle current limiting to safeguard the power supply circuit.

  7. Q: Can UCC2813PW-4 be used in high-power applications? A: Yes, UCC2813PW-4 can be used in high-power applications by selecting appropriate external components that can handle the required power levels.

  8. Q: How can I adjust the switching frequency of UCC2813PW-4? A: The switching frequency of UCC2813PW-4 can be adjusted by changing the value of an external timing resistor and capacitor connected to its RT and CT pins.

  9. Q: Is UCC2813PW-4 suitable for battery-powered applications? A: Yes, UCC2813PW-4 is suitable for battery-powered applications as it offers low quiescent current and efficient power management capabilities.

  10. Q: Are there any application notes or reference designs available for UCC2813PW-4? A: Yes, Texas Instruments provides application notes and reference designs that can help in understanding and implementing UCC2813PW-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's always recommended to refer to the datasheet and relevant documentation for accurate information.