A good PCB layout for the S1A-13 should minimize lead inductance, keep the input and output traces separate, and use a solid ground plane to reduce noise and EMI. A 4-layer PCB with a dedicated power plane and a separate ground plane is recommended.
To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Additionally, add a 10nF to 100nF capacitor between the VIN and GND pins to filter out high-frequency noise. If oscillation still occurs, consider adding a 1kΩ to 10kΩ resistor in series with the output capacitor.
Although the datasheet specifies a maximum input voltage of 15V, it's recommended to limit the input voltage to 12V to ensure reliable operation and prevent damage to the device.
The S1A-13 is rated for operation up to 125°C, but its performance may degrade at high temperatures. To ensure reliable operation, it's recommended to derate the output current and input voltage at high temperatures. Consult the datasheet for specific derating guidelines.
The output voltage ripple of the S1A-13 can be estimated using the following formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency. Consult the datasheet for specific values and guidelines.
