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UCC38083PWR
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UCC38083PWR

Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High-performance current mode PWM controller - Designed for off-line and DC-to-DC converter applications - Provides necessary features to implement a highly efficient power supply design

Package: TSSOP (Thin Shrink Small Outline Package)

Essence: The UCC38083PWR is a high-performance current mode PWM controller that is widely used in power management applications. It offers various features and capabilities to enable the design of efficient power supply systems.

Packaging/Quantity: The UCC38083PWR is available in a TSSOP package. It is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

The UCC38083PWR has the following specifications:

  • Input Voltage Range: 9V to 20V
  • Output Voltage Range: 0V to 15V
  • Operating Temperature Range: -40°C to 85°C
  • Maximum Duty Cycle: 100%
  • Oscillator Frequency Range: 50kHz to 1MHz
  • Current Limit Range: 0.5A to 2.5A

Detailed Pin Configuration

The UCC38083PWR has the following pin configuration:

  1. COMP: Compensation pin for external compensation network.
  2. CS: Current sense input pin for current mode control.
  3. RT/CT: Timing resistor/capacitor connection pin for oscillator frequency setting.
  4. SS/TR: Soft-start/Tracking pin for controlling the start-up behavior.
  5. VREF: Reference voltage output pin for feedback purposes.
  6. FB: Feedback input pin for regulating the output voltage.
  7. GND: Ground pin for device reference.
  8. VCC: Supply voltage input pin.

Functional Features

The UCC38083PWR offers the following functional features:

  • Current mode control for improved stability and transient response.
  • Adjustable oscillator frequency for flexible design requirements.
  • Soft-start function to prevent excessive inrush current during start-up.
  • Overvoltage protection to safeguard the power supply system.
  • Undervoltage lockout for reliable operation under low voltage conditions.
  • Error amplifier with high gain for accurate voltage regulation.

Advantages and Disadvantages

Advantages: - High-performance current mode control for improved stability and response. - Wide input voltage range allows for versatile applications. - Adjustable oscillator frequency enables flexibility in design. - Comprehensive protection features enhance system reliability. - Compact TSSOP package facilitates space-saving designs.

Disadvantages: - Limited output voltage range may not be suitable for certain applications requiring higher voltages. - Requires external compensation network for optimal performance, adding complexity to the design.

Working Principles

The UCC38083PWR operates based on the current mode control principle. It compares the sensed current through the power switch with a reference voltage to generate a control signal. This control signal regulates the duty cycle of the power switch, ensuring stable and efficient power delivery to the load. The device also incorporates various protection mechanisms to safeguard against overvoltage, undervoltage, and other fault conditions.

Detailed Application Field Plans

The UCC38083PWR is commonly used in the following application fields:

  1. Switched-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial systems.
  2. LED lighting drivers for residential, commercial, and automotive applications.
  3. Battery chargers for portable devices, electric vehicles, and renewable energy systems.
  4. DC-to-DC converters for voltage level conversion in various electronic systems.
  5. Power factor correction (PFC) circuits for improving energy efficiency in power supplies.

Detailed and Complete Alternative Models

  1. UCC38084PWR: Similar to UCC38083PWR with additional features for enhanced protection and control.
  2. UCC28083PWR: Current mode PWM controller with similar functionality but optimized for higher power applications.
  3. UC3843PWR: Industry-standard PWM controller with comparable performance and widespread availability.

These alternative models offer similar functionality and can be considered as substitutes for the UCC38083PWR based on specific design requirements.

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Énumérez 10 questions et réponses courantes liées à l'application de UCC38083PWR dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of UCC38083PWR in technical solutions:

  1. Q: What is UCC38083PWR? A: UCC38083PWR is a pulse width modulation (PWM) controller IC used for controlling power converters in various applications.

  2. Q: What are the key features of UCC38083PWR? A: Some key features include integrated high-voltage startup, adjustable frequency operation, cycle-by-cycle current limiting, and soft-start capability.

  3. Q: What is the typical input voltage range for UCC38083PWR? A: The typical input voltage range is between 9V and 20V.

  4. Q: Can UCC38083PWR be used in both buck and boost converter configurations? A: Yes, UCC38083PWR can be used in both buck and boost converter configurations, making it versatile for different applications.

  5. Q: How does UCC38083PWR handle overcurrent protection? A: UCC38083PWR incorporates cycle-by-cycle current limiting to protect against overcurrent conditions.

  6. Q: Does UCC38083PWR have built-in protection against overvoltage? A: No, UCC38083PWR does not have built-in overvoltage protection. Additional external circuitry may be required for overvoltage protection.

  7. Q: What is the maximum switching frequency supported by UCC38083PWR? A: The maximum switching frequency supported is typically around 1 MHz.

  8. Q: Can UCC38083PWR operate in continuous or discontinuous conduction mode? A: UCC38083PWR can operate in both continuous and discontinuous conduction modes, depending on the application requirements.

  9. Q: What is the maximum duty cycle that UCC38083PWR can achieve? A: The maximum duty cycle is typically around 90%.

  10. Q: Are there any evaluation boards or reference designs available for UCC38083PWR? A: Yes, Texas Instruments provides evaluation boards and reference designs to help users get started with UCC38083PWR in their applications.

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