STMicroelectronics provides a recommended PCB layout in their application note AN2675, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
The input capacitor values depend on the input voltage, output voltage, and switching frequency. A general guideline is to use a capacitor with a value between 10uF to 22uF, with a voltage rating of at least 1.5 times the input voltage. However, it's recommended to consult the application note AN2675 and perform simulations to determine the optimal capacitor values for your specific design.
While the datasheet specifies an operating temperature range of -40°C to 150°C, the maximum ambient temperature for reliable operation is typically considered to be around 125°C. Above this temperature, the device's reliability and performance may be compromised.
To ensure EMC, follow the guidelines in the application note AN2675, which includes recommendations for PCB layout, component selection, and shielding. Additionally, consider using a metal shield or a shielded inductor to reduce EMI, and ensure that the device is properly decoupled from the power supply.
The recommended output capacitor value is typically between 10uF to 47uF, with a voltage rating of at least 1.5 times the output voltage. A low-ESR ceramic or film capacitor is recommended to minimize output voltage ripple and ensure stable operation.
VNS14NV0413TR datasheet
by STMicroelectronics
