The UCC28C45DR is a high-performance, BiCMOS current-mode PWM controller designed by Texas Instruments. It is an integral component for power supply designers, offering a reliable and efficient solution for switched-mode power supplies (SMPS). This device is particularly suitable for off-line and DC-to-DC converter applications due to its wide range of features and robust design.

Key Features

• Operating Range: The UCC28C45DR operates at a voltage range of 10 V to 20 V, making it versatile for various circuit designs.
• Frequency: It features a programmable switching frequency that can be set up to 500 kHz, allowing flexibility in the design of the power supply.
• Current Mode Control: With its current mode control, the device provides improved transient response, simplified loop compensation, and inherent protection against overcurrent conditions.
• Low Start-Up Current: The start-up current is typically 100 µA, which minimizes standby power consumption and is ideal for power-efficient applications.
• Trimmed Oscillator Discharge Current: This helps in achieving a consistent and precise dead time over a range of temperature and power supply variations.
• High Current Totem Pole Output: Capable of sourcing and sinking high peak current, the output stage is designed to drive a power MOSFET or IGBT directly.

Applications

The UCC28C45DR is engineered for a variety of applications, including:

• Off-line power supplies
• DC-to-DC converters
• Power supplies for computers and servers
• Industrial power systems
• Telecommunications equipment

Product Quality and Reliability

Texas Instruments is known for its commitment to quality and reliability. The UCC28C45DR is built to meet high standards, ensuring stable performance in a wide range of environmental conditions. It is available in a slim SOIC-8 package, designed for compact PCB layouts and is RoHS compliant, adhering to environmental regulations.

With its combination of features, the UCC28C45DR from Texas Instruments stands out as a robust and reliable choice for designers aiming to create efficient and durable power supply systems.