UCC2819DTR

Product Overview

Category

UCC2819DTR belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply systems, including switch-mode power supplies (SMPS), battery chargers, and voltage regulators.

Characteristics

• UCC2819DTR is a high-performance synchronous rectifier controller.
• It operates at a wide input voltage range, making it suitable for different power supply designs.
• The IC incorporates advanced features such as adaptive dead-time control and cycle-by-cycle current limiting.
• It offers excellent efficiency and reliability in power management applications.

Package

UCC2819DTR is available in a small outline package (SOP) with 8 pins. This package ensures easy integration into circuit boards and provides thermal efficiency.

Essence

The essence of UCC2819DTR lies in its ability to efficiently control synchronous rectification in power management systems, resulting in improved overall system performance.

Packaging/Quantity

UCC2819DTR is typically packaged in reels or tubes, containing a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 30V
• Output Voltage Range: 0V to 30V
• Operating Temperature Range: -40°C to 125°C
• Maximum Duty Cycle: 90%
• Switching Frequency Range: 50kHz to 1MHz
• Output Current Capability: Up to 10A

Pin Configuration

UCC2819DTR follows the standard pin configuration for SOP packages:

1. VCC: Power supply voltage input
2. GND: Ground reference
3. COMP: Compensation pin for feedback control loop
4. FB: Feedback pin for output voltage regulation
5. CS: Current sense pin for current limiting
6. RT/CT: Timing components connection pins
7. SYNC: Synchronization input pin for multiple ICs
8. OUT: Output pin for driving synchronous rectifier

Functional Features

1. Adaptive Dead-Time Control: UCC2819DTR dynamically adjusts the dead-time between the high-side and low-side MOSFETs to optimize efficiency and minimize switching losses.
2. Cycle-by-Cycle Current Limiting: The IC monitors the current flowing through the power stage and limits it on a cycle-by-cycle basis, ensuring safe operation and protecting the system from overcurrent conditions.
3. Voltage Regulation: UCC2819DTR provides precise voltage regulation by utilizing feedback control loop and compensation techniques.
4. Synchronization Capability: Multiple UCC2819DTR ICs can be synchronized using the SYNC pin, enabling parallel operation and improved load sharing.

Advantages and Disadvantages

Advantages

• High-performance synchronous rectifier controller
• Wide input voltage range
• Advanced features for efficient power management
• Excellent efficiency and reliability
• Easy integration into circuit boards

Disadvantages

• Limited output current capability (up to 10A)
• Requires external timing components for operation

Working Principles

UCC2819DTR operates based on a pulse-width modulation (PWM) technique. It generates control signals to drive the synchronous rectifier MOSFETs in a power supply system. By adjusting the duty cycle of these control signals, the IC regulates the output voltage and controls the power flow efficiently.

Detailed Application Field Plans

UCC2819DTR finds applications in various power management systems, including: - Switch-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial machinery. - Battery chargers for electric vehicles, portable devices, and renewable energy systems. - Voltage regulators for automotive electronics, consumer electronics, and medical devices.

Detailed and Complete Alternative Models

1. UCC2819ADR: Similar to UCC2819DTR but available in a different package (SOIC-8).
2. UCC3819DTR: A higher-performance synchronous rectifier controller with extended features.
3. UCC2817DTR: A lower-cost alternative with reduced functionality but suitable for less demanding applications.

These alternative models offer similar functionalities and can be considered based on specific requirements and availability.

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