Bourns recommends a symmetrical PCB layout with a solid ground plane, and keeping the input and output traces as short as possible to minimize parasitic inductance and capacitance.
Calculate the peak current (Ipeak) using the formula: Ipeak = (Vin * D) / (L * f), where Vin is the input voltage, D is the duty cycle, L is the inductance, and f is the switching frequency. Ensure Ipeak is below the saturation current rating (Isat) specified in the datasheet.
The SRF is typically not specified in the datasheet, but it can be estimated using the formula: SRF ≈ (1 / (2 * π * √(L * C))), where L is the inductance and C is the parasitic capacitance. Operating above the SRF can lead to reduced inductance and increased losses.
The DCR affects the inductor's efficiency and can cause power losses. Consider the DCR when calculating the inductor's power rating and ensure it is within the specified limits. You can also use the DCR to estimate the inductor's temperature rise.
Store the inductor in a dry, cool place, away from direct sunlight and moisture. Handle the inductor by the body, avoiding touching the leads or core to prevent damage or contamination. Use anti-static packaging and follow ESD precautions when handling the inductor.
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