STMicroelectronics provides a recommended PCB layout in the application note AN4899, which includes guidelines for thermal management, decoupling, and layout considerations 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 AN4899 for more detailed guidance.
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 compliance, follow the guidelines in the application note AN4899, which includes recommendations for PCB layout, component selection, and shielding. Additionally, consider using a metal shield or a shielded inductor to reduce electromagnetic radiation.
A low-ESR ceramic or film capacitor with a value between 10uF to 47uF is recommended for the output capacitor. The exact value depends on the output voltage, switching frequency, and load characteristics. Consult the application note AN4899 for more detailed guidance.
VN02NSP13TR datasheet
by STMicroelectronics
