Texas Instruments recommends a compact layout with the UCC2897PWR placed close to the transformer, and the input and output capacitors placed close to the IC. A ground plane is also recommended to reduce EMI and noise. Additionally, the datasheet provides a recommended layout diagram and PCB design guidelines.
The transformer selection depends on the specific application requirements, such as output power, voltage, and frequency. Texas Instruments provides a transformer selection guide in the datasheet, which includes guidelines for core selection, turns ratio, and wire sizing. Additionally, the UCC2897PWR evaluation module provides a reference design with a recommended transformer.
The UCC2897PWR has an operating temperature range of -40°C to 125°C. However, the maximum junction temperature (TJ) is 150°C, and the device should be derated for temperatures above 125°C to ensure reliable operation.
The UCC2897PWR has built-in OVP and UVP features, which can be enabled by connecting the OVP and UVP pins to the input voltage rail. The datasheet provides guidelines for setting the OVP and UVP thresholds, and the UCC2897PWR evaluation module provides a reference design with OVP and UVP implementation.
The recommended input capacitor value is 10uF to 22uF, and the type should be a low-ESR ceramic or film capacitor. The input capacitor should be placed close to the UCC2897PWR and the input voltage rail to reduce noise and ripple.
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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.
