The UCC2813D series from Texas Instruments represents a line of high-performance, low-power BiCMOS current-mode pulse-width modulation (PWM) controllers. These integrated circuits are designed to deliver efficient power management and are suitable for a wide range of power conversion applications, including AC-DC power supplies, DC-DC converters, and offline power supplies.

Key Features

• Current-Mode Control: Provides improved transient response, inherent pulse-by-pulse current limiting, and simplified loop compensation.
• Low Startup and Operating Current: The device features a typical startup current of 0.5µA and a typical operating current of 2.5mA, enhancing efficiency in power-sensitive applications.
• High-Frequency Operation: Capable of operating at frequencies up to 1MHz, allowing for smaller passive components and a more compact power supply design.
• Automatic Feed-Forward Compensation: Helps to maintain stable operation over a wide range of input voltages and output powers.
• Trimmed Oscillator Discharge Current: Ensures precise duty cycle clamping and frequency control.
• High Current Totem Pole Output: Capable of driving a power MOSFET directly, which simplifies the design and reduces external component count.
• Soft Start: Minimizes stress on the power supply during startup by gradually increasing the output voltage.

Applications

• Offline power supplies
• DC-DC converters
• Power supplies for telecommunications equipment
• Industrial power systems
• Portable electronics

The UCC2813D series is available in a variety of package options, including the 8-pin SOIC, which is compatible with standard surface-mount manufacturing processes. With its advanced features and versatile capabilities, the UCC2813D series is an excellent choice for designers seeking a reliable and efficient solution for their power management needs.