Product Overview: UCC2813D-4 from Texas Instruments

The UCC2813D-4 is a high-performance, low-power, BiCMOS current-mode PWM controller from Texas Instruments, designed to deliver efficient power management and conversion for a wide range of applications. As part of the UCC28C/3x family of controllers, this device integrates numerous features that enhance system reliability, flexibility, and efficiency.

Key Features

• Operating Frequency: The UCC2813D-4 operates at a fixed frequency of 100kHz, which provides an optimal balance between efficiency and component size, reducing the overall footprint and cost of the power supply design.
• Current-Mode Control: This control method simplifies loop compensation, improves transient response, and allows for reliable overcurrent protection.
• Low Startup and Operating Current: The device boasts a low startup current of typically 0.5µA and an operating current of typically 2.5mA, minimizing power loss during both startup and steady-state operation.
• Trimmed Oscillator Discharge Current: This feature ensures consistent and accurate duty cycle limits to protect against overcurrent conditions.
• High Current Totem-Pole Output: The output stage is capable of driving a 1A peak current, suitable for driving a power MOSFET directly, thus reducing the need for additional driver components.
• Automatic Feed-Forward Compensation: This enhances performance across a wide range of input voltages.
• Undervoltage Lockout (UVLO): Both startup and operating UVLO thresholds are programmed for optimal system performance and reliability.
• Soft-Start: The soft-start function limits inrush current during startup, reducing stress on the power supply components.

Applications

The UCC2813D-4 is versatile and can be used in various applications where efficient power conversion is required. Its typical applications include:

• Switched Mode Power Supplies (SMPS)
• DC-DC Converters
• Offline Power Converters
• Telecommunication Power Supplies
• Industrial Power Systems

Quality and Reliability

Texas Instruments is known for its commitment to quality, and the UCC2813D-4 is no exception. It is designed to meet stringent industry standards for performance and reliability, ensuring a dependable solution for power management challenges.