Read the maximum nominal inductance, A L, on the Y-axis. Locate the LI² value on the Ferrite Core Selector chart below.įollow this coordinate in the intersection with the first core size curve. I = maximum DC output current + 1/2 AC RippleĢ. L = inductance required with DC bias (millihenries) Only two parameters of the design applications must be known: One can determine the smallest core size, assuming a winding factor of 50% and wire current carrying capacity of 500 circular mils per ampere. These core selection procedures simplify the design of inductors for switching regulator applications. By adding air gaps to these ferrite shapes, the cores can be used efficiently while avoiding saturation. For switching regulators, power materials are recommended because of their temperature and DC bias characteristics. For other inquiries regarding inductor design with Magnetics ferrite cores, Contact our Applications Engineers or submit a Custom Inductor Design request.įerrite E cores and pot cores offer the advantages of decreased cost and low core losses at high frequencies. The following design guide may also be downloaded as a PDF. Inductor Design with Magnetics Ferrite Cores
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