Murata recommends a 2-layer PCB with a solid ground plane on the bottom layer and a thermal relief pattern on the top layer to ensure good heat dissipation. A minimum of 2 oz copper thickness is recommended.
To ensure reliable start-up, Murata recommends using a soft-start circuit to limit the inrush current and a voltage supervisor to monitor the output voltage. Additionally, a sufficient input capacitance should be used to filter out input voltage noise.
The maximum allowed capacitance on the output of the 48680SC is 220uF. Exceeding this value may cause instability or oscillation in the converter.
Murata recommends using a TVS (Transient Voltage Suppressor) diode or a varistor on the input of the converter to protect it from voltage transients and surges. Additionally, a fuse or a current limiter can be used to protect the converter from overcurrent conditions.
Murata recommends using a pi-filter configuration with a common-mode choke and X-capacitors to minimize EMI. The filter components should be selected based on the specific application and the desired level of EMI attenuation.
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