The UCC2813PWTR-3 is a highly integrated and efficient low-power PWM controller from Texas Instruments, designed for a wide range of power supply applications. This advanced component is part of the UCC28C series, which is known for its versatility and reliability in managing power conversion and regulation tasks.

Key Features

• Optimized for Off-line and DC-to-DC Converters: This PWM controller is ideal for off-line and DC-to-DC converter applications, providing stable and efficient power management.
• Low Start-Up and Operating Current: The UCC2813PWTR-3 boasts a low start-up current of less than 0.5mA and an operating current of 2.5mA, making it an energy-efficient choice for modern electronic applications.
• Trimmed Oscillator Discharge Current: The oscillator discharge current is precisely trimmed to ensure consistent and accurate timing parameters, enhancing the performance of the power supply.
• Current Sense Discharge Transistor: A built-in discharge transistor for the current sense comparator provides a direct path for rapid discharge of the current sensing capacitor, which improves response time and reliability.
• Automatic Feed-Forward Compensation: This feature helps in compensating for input voltage variations without the need for external components, simplifying the design and reducing the bill of materials.
• High Current Totem Pole Output: The device is equipped with a high-current totem pole output capable of sourcing and sinking up to 1A, suitable for driving power MOSFETs or IGBTs directly.
• Frequency Jittering for Lower EMI: The UCC2813PWTR-3 includes frequency jittering, which helps to spread the electromagnetic interference (EMI) spectrum, reducing the peak EMI generated by the power supply.

Applications

The UCC2813PWTR-3 is widely used in various applications that require efficient power management. It is suitable for:

• AC-DC Power Supplies
• Isolated and Non-Isolated Converters
• Power Adapters
• Telecom Power Supplies
• DC-DC Modules
• LED Drivers

Package and Quality

The UCC2813PWTR-3 is available in a 14-pin TSSOP (Thin Shrink Small Outline Package) that is RoHS compliant and designed for surface-mount technology (SMT). Texas Instruments ensures high standards of quality and reliability for all its products, and this PWM controller is no exception, making it a trusted choice for engineers and designers in the industry.