Overview of Texas Instruments UCC2813PWTR-0

The UCC2813PWTR-0 is a high-performance, low-power BiCMOS current-mode PWM controller designed by Texas Instruments for a wide range of power supply applications. This versatile integrated circuit is part of the UCC2813-x series, which is known for its improved performance over standard industry devices such as the UC3842, UC3843, UC3844, and UC3845 series.

Key Features

• Operating Range: The UCC2813PWTR-0 operates at a supply voltage ranging from 8.5V to 16V, making it suitable for various applications that require a broad input voltage range.
• Low Startup Current: This device features a low startup current of less than 0.5mA, which enhances the efficiency of the system, especially in battery-powered applications.
• Trimmed Oscillator Discharge Current: The oscillator discharge current is well-trimmed, ensuring consistent and reliable performance across different units and applications.
• High Current Totem Pole Output: The UCC2813PWTR-0 is equipped with a high-current totem pole output capable of driving a power MOSFET directly, reducing the need for additional driver components.
• Automatic Feed Forward Compensation: It includes automatic feed-forward compensation, which helps maintain stable operation under varying input voltage conditions.
• Pulse-by-Pulse Current Limiting: Enhanced safety is provided by the pulse-by-pulse current limiting feature, which protects the device and the power supply from overcurrent conditions.

Applications

The UCC2813PWTR-0 is ideal for a variety of power supply designs, including:

• Offline and DC-to-DC power converters
• Switching power supplies
• Adapters and chargers
• Power supply modules for consumer electronics
• Telecommunications equipment

Package and Reliability

This PWM controller is available in a TSSOP-14 (Thin Shrink Small Outline Package) which offers a compact footprint for space-constrained applications. The device is also characterized for operation from -40°C to +85°C, ensuring reliable performance in a wide range of environmental conditions.

With its combination of features, the UCC2813PWTR-0 from Texas Instruments is an excellent choice for designers looking to create efficient and reliable power supply systems with a minimal component count.