Reducing heat generation in a boost inductor using a magnetic tape

Abstract

Increasing the switching frequency of direct current–direct current converters is effective in reducing the size of magnetic components used in converters. However, as the switching frequency increases, the loss and heat generated by the magnetic components increase. Therefore, in this study, a magnetic tape that bypasses the magnetic flux in the windings of magnetic components is proposed to reduce the loss and heat generation of these components. The effect of suppressing the temperature rise of magnetic components with a magnetic tape during the converter drive was investigated. The temperature rise of a 1-MHz 100-V/200-V 800-W boost inductor was reduced by 16.8 K by applying the magnetic tape. Additionally, applying the magnetic tape to the inductor reduced the heat generation.

Reduction of Alternating‐Current Resistance and Heat Generation of Spiral Inductors with Magnetic Sealing Technique

“…Table I shows the driving conditions of a boost DC–DC converter. The inductance required to drive the converter can be calculated from (1) [22–24]. Here, the peak‐to‐peak (p–p) value of the ripple current is set to be as much as 100%–130% of the input current to reduce the size of the inductor.…”