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UCC28019DR
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UCC28019DR

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High-performance current mode controller - Designed for offline power supplies - Provides precise control of power factor correction (PFC) pre-regulators

Package: SOIC-8

Essence: The UCC28019DR is a high-performance current mode controller used in offline power supplies. It offers precise control of power factor correction (PFC) pre-regulators, ensuring efficient and reliable power management.

Packaging/Quantity: The UCC28019DR is available in a standard SOIC-8 package. It is typically sold in reels or tubes containing multiple units.

Specifications

  • Input Voltage Range: 10V to 20V
  • Output Voltage Range: 0V to 5V
  • Operating Temperature Range: -40°C to 125°C
  • Maximum Supply Current: 3mA
  • Maximum Switching Frequency: 500kHz
  • Maximum Duty Cycle: 100%

Pin Configuration

The UCC28019DR has the following pin configuration:

  1. VREF: Reference voltage input
  2. COMP: Error amplifier output
  3. FB: Feedback voltage input
  4. CS: Current sense input
  5. RT/CT: Timing resistor/capacitor connection
  6. GND: Ground
  7. VCC: Supply voltage input
  8. OUT: Output voltage

Functional Features

  • Precise current mode control for improved power factor correction
  • Adaptive dead-time control for optimized switching performance
  • Overvoltage protection for enhanced system reliability
  • Soft-start function to prevent excessive inrush current
  • External synchronization capability for multi-phase operation

Advantages and Disadvantages

Advantages: - High-performance current mode control ensures efficient power factor correction - Adaptive dead-time control optimizes switching performance - Overvoltage protection enhances system reliability - Soft-start function prevents excessive inrush current - External synchronization capability allows for multi-phase operation

Disadvantages: - Limited input voltage range (10V to 20V) - Maximum switching frequency of 500kHz may not be suitable for all applications

Working Principles

The UCC28019DR operates based on the current mode control principle. It continuously monitors the current flowing through the power stage and adjusts the duty cycle of the output waveform to maintain a stable output voltage. By regulating the power factor correction, it ensures efficient power transfer from the input source to the load.

Detailed Application Field Plans

The UCC28019DR is commonly used in various power management applications, including:

  1. Power Factor Correction (PFC) Pre-regulators
  2. Offline Power Supplies
  3. Switched-Mode Power Supplies (SMPS)
  4. LED Lighting Systems
  5. Industrial Control Systems

Detailed and Complete Alternative Models

  1. UCC28019ADR: Similar to UCC28019DR but available in an SOIC-14 package.
  2. UCC28019EVM-001: Evaluation module for testing and prototyping with the UCC28019DR.
  3. UCC28019PW: Similar to UCC28019DR but available in a TSSOP-8 package.

These alternative models offer similar functionality and can be used as substitutes for the UCC28019DR depending on specific requirements and application constraints.

Note: The above information is subject to change. Always refer to the manufacturer's datasheet for the most accurate and up-to-date specifications.

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av UCC28019DR i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of UCC28019DR in technical solutions:

  1. Q: What is UCC28019DR? A: UCC28019DR is a high-performance, current-mode PWM controller designed for offline and DC-to-DC power supplies.

  2. Q: What are the key features of UCC28019DR? A: Some key features include wide input voltage range, integrated high-voltage startup, cycle-by-cycle current limit, and adjustable switching frequency.

  3. Q: How can UCC28019DR be used in offline power supplies? A: UCC28019DR can be used as a primary-side controller in flyback, forward, and half-bridge converters for offline power supplies.

  4. Q: Can UCC28019DR be used in DC-to-DC power supplies as well? A: Yes, UCC28019DR can also be used in DC-to-DC power supplies such as buck, boost, and buck-boost converters.

  5. Q: What is the maximum operating frequency of UCC28019DR? A: The maximum operating frequency of UCC28019DR is typically around 500 kHz.

  6. Q: Does UCC28019DR have any protection features? A: Yes, UCC28019DR includes various protection features like overvoltage protection, undervoltage lockout, and thermal shutdown.

  7. Q: Can UCC28019DR operate in continuous conduction mode (CCM)? A: Yes, UCC28019DR can operate in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM).

  8. Q: Is UCC28019DR suitable for high-power applications? A: UCC28019DR is designed for low to medium power applications, typically up to a few hundred watts.

  9. Q: What are the typical applications of UCC28019DR? A: Some typical applications include LED lighting, battery chargers, auxiliary power supplies, and industrial power systems.

  10. Q: Where can I find more information about using UCC28019DR in technical solutions? A: You can refer to the datasheet and application notes provided by the manufacturer, Texas Instruments, for detailed information on using UCC28019DR in various technical solutions.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios.