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In today's CPU Voltage Regulator(VR) industry, coupled inductor VRs have begun to replace the non-coupled VRs for their better performances. However, today's coupled inductor implementations have long winding paths, which is not preferred in the high current CPU VR application. In this paper, several short winding path coupled inductor structures for 2 and more phase coupled inductors are proposed...
<para> In the past few years, coupled inductors have become more and more popular in microprocessor voltage regulators (VRs) for they can increase the VRs' steady-state and transient performances. In this paper, twisted core coupled inductors are proposed to reduce the winding path of coupled inductors. Next, the reluctance model of the twisted core coupled inductors is proposed. After that,...
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