The UCC2813PW-1 from Texas Instruments is a high-performance, low-power BiCMOS current-mode pulse-width modulation (PWM) controller designed for a wide range of power supply applications. This versatile chip is part of the UCC2813x family of PWM controllers that offer various features tailored to improve the efficiency and reliability of switched-mode power supplies.

Key Features

• Operating Range: The UCC2813PW-1 operates at a supply voltage ranging from 8.5V to 16V, making it suitable for many different types of power systems.
• Low Start-Up Current: This PWM controller boasts a low start-up current of typically 0.5 µA, which contributes to the efficiency of the overall power system by reducing standby power consumption.
• High-Frequency Operation: With an operational frequency up to 1 MHz, the UCC2813PW-1 is capable of driving high-frequency power stages, which can result in smaller and more efficient power supply designs.
• Trimmed Oscillator Discharge Current: The oscillator discharge current is trimmed to ensure precise duty cycle clamping, which is critical for reliable and stable power supply operation.
• Current-Mode Control: Current-mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.

Applications

The UCC2813PW-1 is ideal for a range of applications, including:

• Offline power supplies
• DC-DC converters
• Telecom and datacom power systems
• Industrial power systems

Package and Reliability

The device is available in a 14-pin TSSOP (Thin Shrink Small Outline Package), which is optimal for space-constrained applications. It is characterized for operation from -40°C to 85°C, ensuring reliable performance across a wide range of environmental conditions.

Conclusion

The UCC2813PW-1 from Texas Instruments represents a robust and efficient solution for designers looking to improve power supply performance while maintaining low power consumption. Its high-frequency operation, precision control, and low start-up current make it an excellent choice for a variety of power management applications.