The UCC2813DTR-5G4 from Texas Instruments is a high-performance, low-power, BiCMOS current-mode pulse width modulation (PWM) controller. It is an integral component for power supply designers, offering a range of features that make it ideal for a variety of switched-mode power supply (SMPS) applications.

Key Features

• Operating Range: The UCC2813DTR-5G4 operates with a supply voltage range from 8.5V to 18V, making it versatile for different power environments.
• Current Mode Control: It provides fast response to load transients and excellent loop stability by employing current mode control techniques.
• High-Frequency Operation: With an ability to operate up to 1MHz, this controller is suitable for applications requiring high-frequency power conversion, which can result in smaller, lighter, and more cost-efficient power supply designs.
• Low Startup and Operating Current: The device features a low startup current of 0.5µA and an operating current of 2.5mA, enhancing the overall efficiency of the power supply.
• Trimmed Oscillator Discharge Current: This helps in achieving a consistent and repeatable frequency from unit to unit, which is crucial for applications demanding tight frequency control.
• Automatic Feed Forward Compensation: This feature helps in maintaining a stable loop gain over a wide range of input voltages.
• Soft Start: The UCC2813DTR-5G4 incorporates a soft-start feature to minimize inrush current during startup, contributing to the reliability and longevity of the system.

Applications

The UCC2813DTR-5G4 is suitable for a wide range of applications, including:

• DC to DC converters
• Off-line power supplies
• Telecommunication equipment
• Portable electronics
• Industrial and medical equipment

Package and Availability

The device is offered in a surface-mount package, specifically in the thin shrink small outline package (TSSOP), which is conducive for space-constrained applications. The UCC2813DTR-5G4 is available in tape and reel format for ease of manufacturing and assembly processes.

Conclusion

With its robust feature set and high-frequency operation, the UCC2813DTR-5G4 from Texas Instruments stands out as a reliable and efficient solution for advanced power supply design. Its versatility and performance make it a valuable component for engineers looking to optimize their power management systems.