Texas Instruments

UCC28C42DGK  

DC DC Switching Controllers

UCC28C42DGK Description

The UCC28C42DGK is an offline PWM controller designed for power management applications, featuring a transistor driver output configuration. Manufactured by Texas Instruments, this IC is part of the Power Management (PMIC) category and is housed in an 8VSSOP package. Despite its obsolete product status, the UCC28C42DGK remains a robust solution for various power conversion topologies, including boost, flyback, and forward converters. It operates within a supply voltage range of 9V to 18V and supports switching frequencies up to 1MHz, making it suitable for high-frequency applications. The device is REACH unaffected and RoHS3 compliant, ensuring environmental safety and regulatory adherence. With a moisture sensitivity level (MSL) of 2 (1 year), it is well-suited for surface-mount applications, providing reliable performance in diverse environments.

UCC28C42DGK Features

The UCC28C42DGK offers several unique features that set it apart from similar models:

• Frequency Control: This feature allows for precise control over the switching frequency, enabling optimized performance and efficiency in various power conversion applications.
• High Duty Cycle: With a maximum duty cycle of 96%, the UCC28C42DGK can achieve high output power levels, making it ideal for applications requiring high efficiency and power density.
• Single Output Phase: The single output phase ensures simplicity in design and implementation, reducing complexity and potential points of failure.
• Positive Output Configuration: The positive output configuration simplifies circuit design and integration, making it easier to work with in various power management systems.
• No Synchronous Rectifier: The absence of a synchronous rectifier allows for a more straightforward design, which can be advantageous in certain applications where simplicity and cost-effectiveness are prioritized.
• No Clock Sync: This feature reduces the need for additional synchronization components, further simplifying the overall system design.

UCC28C42DGK Applications

The UCC28C42DGK is ideal for a variety of applications, including:

• Power Supplies: Its ability to support multiple topologies makes it suitable for designing efficient power supplies, including those used in consumer electronics, industrial equipment, and telecommunications.
• Adaptive Voltage Control: The frequency control feature allows for adaptive voltage control, which can be beneficial in applications where dynamic load conditions are common.
• High-Frequency Applications: With a switching frequency capability up to 1MHz, the UCC28C42DGK is well-suited for high-frequency power conversion applications, such as LED lighting and small form-factor power supplies.
• Simple Power Management Systems: The single output phase and positive configuration make it an excellent choice for straightforward power management systems where simplicity and reliability are key considerations.

Conclusion of UCC28C42DGK

In conclusion, the UCC28C42DGK is a versatile offline PWM controller that offers a range of technical specifications and performance benefits. Despite its obsolete status, it remains a valuable component for power management applications, particularly those requiring high-frequency operation, high efficiency, and simplicity in design. Its compliance with environmental regulations and robust performance in diverse environments make it a reliable choice for engineers and designers in the electronics industry.

UCC28C42DGK Documents

Download datasheets and manufacturer documentation for UCC28C42DGK

Datasheets :

UCC28C40-45, UCC38C40-45      

UNKNOWN TYPE :

8-VSSOP      

PCN Obsolescence/ EOL :

UCCx8C4xDGK obs 12/Jan/2023      

HTML Datasheet :

UCC28C40-45, UCC38C40-45