Texas Instruments provides a recommended PCB layout in the UCC5350 datasheet, which includes guidelines for component placement, routing, and thermal management. Additionally, TI offers a PCB layout checklist and a thermal design guide to help ensure optimal performance.
The input capacitor selection depends on the input voltage, current, and frequency. TI recommends using a low-ESR capacitor with a value between 10uF to 22uF, and a voltage rating of at least 1.5 times the maximum input voltage. The capacitor should also be placed close to the VIN pin to minimize noise and ripple.
The UCC5350SBQDRQ1 has an operating junction temperature range of -40°C to 150°C. However, for reliable operation, TI recommends keeping the ambient temperature below 85°C to ensure a maximum junction temperature of 125°C.
To ensure EMC, follow TI's guidelines for PCB layout, component selection, and shielding. Use a shielded inductor, keep the switching node (SW) away from sensitive nodes, and use a common-mode choke to reduce EMI. Additionally, follow the CISPR 22 and FCC Part 15 Class B guidelines for conducted and radiated emissions.
The output capacitor selection depends on the output voltage, current, and ripple requirements. TI recommends using a low-ESR capacitor with a value between 10uF to 47uF, and a voltage rating of at least 1.5 times the maximum output voltage. The capacitor should also be placed close to the VOUT pin to minimize 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.
