A good PCB layout for the UCC28740DR involves keeping the high-frequency switching nodes (e.g., SW and VIN) away from sensitive analog nodes, using a solid ground plane, and minimizing loop areas. TI provides a recommended layout in the datasheet and application notes.
Optimizing the compensation network involves selecting the right values for the compensation components (R1, R2, C1, and C2) based on the specific application requirements. TI provides a compensation design tool and guidelines in the datasheet and application notes to help with this process.
The maximum allowed voltage on the VIN pin of the UCC28740DR is 28V, with a recommended operating range of 8V to 24V. Exceeding this voltage can damage the device.
To ensure reliable start-up of the UCC28740DR, ensure that the input voltage (VIN) is within the recommended range, the output voltage is within the specified range, and the soft-start capacitor (CSS) is properly sized. Additionally, ensure that the input voltage ramp-up time is within the recommended range (typically 10ms to 100ms).
The EN (enable) pin on the UCC28740DR is used to enable or disable the device. When EN is high, the device is enabled, and when EN is low, the device is disabled. This pin can be used to implement power sequencing or to shut down the device during fault conditions.
Trust Checks
This model has been provided by an expert contributor.
Expert Contribution
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
UCC28740DR Overview
Use the download button to access the UCC28740DR schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like UCC28,
or try a keyword search, such as Switching Regulator or Controllers
About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
