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UCC2819ANG4
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UCC2819ANG4

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-performance voltage mode PWM controller
  • Package: DIP-16 (Dual In-Line Package with 16 pins)
  • Essence: Regulates and controls power supply voltages in various applications
  • Packaging/Quantity: Available in tape and reel packaging, quantity depends on supplier

Specifications

  • Input Voltage Range: 8V to 18V
  • Output Voltage Range: 0.8V to 5.1V
  • Operating Temperature Range: -40°C to +85°C
  • Switching Frequency: Adjustable up to 1MHz
  • Maximum Duty Cycle: 100%
  • Output Current: Up to 1A

Detailed Pin Configuration

  1. VREF: Reference voltage input
  2. COMP: Error amplifier output
  3. FB: Feedback voltage input
  4. RT/CT: Timing resistor/capacitor connection
  5. CS: Current sense input
  6. SS/TR: Soft-start/Shutdown control
  7. GND: Ground
  8. VCC: Supply voltage input
  9. SYNC: Synchronization input
  10. OSC: Oscillator timing capacitor connection
  11. DRVH: High-side gate driver output
  12. DRVL: Low-side gate driver output
  13. HO: High-side MOSFET output
  14. LO: Low-side MOSFET output
  15. VSENSE: Voltage sense input
  16. NC: No connection

Functional Features

  • Voltage mode PWM control
  • Adjustable switching frequency
  • Soft-start and shutdown control
  • Overcurrent protection
  • Under-voltage lockout
  • Error amplifier for precise regulation
  • Synchronization capability for multi-phase operation

Advantages and Disadvantages

Advantages: - High-performance voltage regulation - Wide input and output voltage range - Adjustable switching frequency for flexibility - Comprehensive protection features - Synchronization capability for multi-phase operation

Disadvantages: - Limited output current capacity (up to 1A) - Requires external components for complete power supply design

Working Principles

The UCC2819ANG4 is a voltage mode PWM controller that regulates the output voltage of a power supply. It operates by comparing the feedback voltage (FB) with a reference voltage (VREF) and adjusts the duty cycle of the PWM signal accordingly. This control mechanism ensures precise voltage regulation.

The IC incorporates an error amplifier, which amplifies the difference between the feedback voltage and the reference voltage. This amplified error signal is then compared with a sawtooth waveform generated by an internal oscillator. The resulting PWM signal drives the high-side and low-side MOSFETs through the gate driver outputs, controlling the power flow and regulating the output voltage.

Detailed Application Field Plans

The UCC2819ANG4 is widely used in various power management applications, including but not limited to:

  1. Switching Power Supplies: Used in AC/DC converters, DC/DC converters, and other power supply designs.
  2. LED Lighting: Provides efficient voltage regulation for LED drivers.
  3. Industrial Automation: Controls power supply voltages in industrial equipment and machinery.
  4. Telecommunications: Ensures stable power delivery in telecom infrastructure.
  5. Automotive Electronics: Regulates voltages in automotive systems such as infotainment, lighting, and motor control.

Detailed and Complete Alternative Models

  1. UCC2819ADR: Similar specifications, available in SOIC-16 package.
  2. UCC3819ANG4: Enhanced version with additional features, available in DIP-16 package.
  3. UC3842AN: Voltage mode PWM controller with different specifications, available in DIP-8 package.
  4. TL494CN: PWM controller with adjustable frequency and duty cycle, available in DIP-16 package.

(Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's datasheets for a complete list.)

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10 domande e risposte comuni relative all'applicazione di UCC2819ANG4 nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of UCC2819ANG4 in technical solutions:

  1. Q: What is UCC2819ANG4? A: UCC2819ANG4 is a high-performance current-mode PWM controller designed for offline and DC-to-DC converter applications.

  2. Q: What are the key features of UCC2819ANG4? A: Some key features include adjustable frequency, soft-start capability, cycle-by-cycle current limiting, and integrated protection features.

  3. Q: What are the typical applications of UCC2819ANG4? A: UCC2819ANG4 is commonly used in power supplies, battery chargers, LED drivers, and other applications requiring efficient power conversion.

  4. Q: How does UCC2819ANG4 achieve adjustable frequency? A: The frequency of operation can be adjusted by changing the value of an external resistor connected to the RT pin of the device.

  5. Q: Can UCC2819ANG4 handle high currents? A: Yes, UCC2819ANG4 can handle high currents through its integrated current sense amplifier and cycle-by-cycle current limiting feature.

  6. Q: Does UCC2819ANG4 have any protection features? A: Yes, UCC2819ANG4 has built-in protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.

  7. Q: Is UCC2819ANG4 suitable for both AC and DC input applications? A: Yes, UCC2819ANG4 can be used in both AC and DC input applications, making it versatile for various power supply designs.

  8. Q: Can UCC2819ANG4 operate in a wide temperature range? A: Yes, UCC2819ANG4 is designed to operate in a wide temperature range, typically from -40°C to 125°C.

  9. Q: What is the maximum duty cycle of UCC2819ANG4? A: The maximum duty cycle of UCC2819ANG4 is typically around 90%, allowing for efficient power conversion.

  10. Q: Are there any evaluation boards or reference designs available for UCC2819ANG4? A: Yes, Texas Instruments provides evaluation boards and reference designs that can help users quickly prototype their applications using UCC2819ANG4.

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