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 = Iavg + (ΔI/2), where Iavg is the average current and ΔI is the ripple current. 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. The SRF can affect the inductor's impedance and Q factor, so it's essential to consider it when designing high-frequency circuits.
The CAT16-2702F4LF is rated for operation up to 125°C, but derating may be necessary for temperatures above 85°C. Consult the datasheet and Bourns' application notes for guidance on high-temperature operation.
The DCR affects the inductor's efficiency and power loss. Calculate the power loss using the formula Ploss = I² * DCR, and consider using a lower DCR inductor or optimizing the design to minimize current flow.
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