Product Overview: Texas Instruments UCC2813D-1

The UCC2813D-1 from Texas Instruments is a high-performance, low-power, BiCMOS current-mode PWM controller. It is a member of the UCC28Cxx series, which is specifically designed to cater to the needs of low-power applications. This versatile PWM controller integrates a range of features that make it ideal for a wide array of power supply designs, including off-line and DC-to-DC converters.

Key Features

• Operating Range: The UCC2813D-1 operates with a supply voltage range of 8V to 30V, making it suitable for various applications.
• Frequency: It offers a fixed-frequency operation of 1MHz, which enables the design of power supplies with smaller components, reducing size and cost.
• Low Start-Up and Operating Current: This device boasts a low start-up current of less than 0.5mA and a low operating current of 2.5mA, ensuring high efficiency in power supply designs.
• Current Mode Control: The current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Trimmed Oscillator Discharge Current: This feature helps in achieving a consistent and accurate duty cycle limit across the full temperature range.
• High-Current Totem Pole Output: The UCC2813D-1 is equipped with a high-current totem pole output, capable of driving a 1A MOSFET directly. This makes it highly efficient for power conversion.
• Automatic Feed-Forward Compensation: It includes automatic feed-forward compensation for enhanced performance across a wide range of input voltages.
• Undervoltage Lockout (UVLO): The UVLO feature ensures that the controller shuts down during low input voltage conditions to protect the circuitry.
• Package: The device is available in the 8-pin SOIC package, which is easy to handle and compatible with standard PCB layouts.

Applications

The UCC2813D-1 is suitable for a variety of applications, including:

• Offline power supplies
• DC-DC converters
• Telecommunication equipment
• Portable devices
• Green-mode power supplies

With its combination of features and performance, the UCC2813D-1 from Texas Instruments is a robust solution for designers looking to create efficient, reliable, and compact power supply systems.