Texas Instruments

UCC28221PW  

AC DC Converters, Offline Switches

UCC28221PW Description

The UCC28221PW is a high-performance offline switcher flyback controller from Texas Instruments, designed for applications requiring isolated output and high efficiency. This device is housed in a 20TSSOP package and is suitable for surface mount technology, making it ideal for compact and high-density designs. The UCC28221PW operates with a switching frequency of 2MHz, ensuring fast response times and minimal electromagnetic interference (EMI). It features a wide supply voltage range of 8.4V to 14.5V and a start-up voltage of 13V, providing robustness and flexibility in various power supply conditions.

UCC28221PW Features

The UCC28221PW offers several unique features that set it apart from similar models in the market. Key features include:

• Topology: Flyback topology, which is highly efficient and suitable for isolated output applications.
• Control Features: Soft start functionality ensures smooth startup and reduces inrush current, protecting the power supply and connected components.
• Fault Protection: Comprehensive fault protection mechanisms, including current limiting and over-voltage protection, enhance reliability and prevent damage in abnormal conditions.
• Duty Cycle: A maximum duty cycle of 75% allows for efficient power transfer and control.
• Compliance: The device is REACH unaffected and ROHS3 compliant, ensuring it meets stringent environmental and safety standards.
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited) indicates that the device is not sensitive to moisture, making it suitable for a wide range of manufacturing environments.

UCC28221PW Applications

The UCC28221PW is well-suited for a variety of applications where isolated output and high efficiency are critical. Specific use cases include:

• Power Supplies: Ideal for designing isolated power supplies in consumer electronics, medical devices, and industrial equipment.
• Adapters and Chargers: Suitable for high-efficiency adapters and chargers that require compact design and high performance.
• Telecommunications: Can be used in telecom equipment where reliable power management and isolation are essential.
• Industrial Automation: Applicable in industrial control systems where isolated power supplies are needed to protect sensitive electronics from voltage spikes and noise.

Conclusion of UCC28221PW

The UCC28221PW from Texas Instruments is a versatile and reliable offline switcher flyback controller that offers a combination of high efficiency, robust fault protection, and compliance with environmental standards. Its unique features, such as soft start and comprehensive fault protection, make it a superior choice for applications requiring isolated output and high performance. With a wide supply voltage range and a high switching frequency, the UCC28221PW ensures stable and efficient power delivery in various operating conditions. This device is ideal for designers looking to create compact, high-density power solutions without compromising on performance or reliability.

UCC28221PW Documents

Download datasheets and manufacturer documentation for UCC28221PW

Datasheets :

UCC28220, UCC28221      

PCN Obsolescence/ EOL :

EOL 21/Sept/2023      

HTML Datasheet :

UCC28220, UCC28221