Fully Integrated Galvanically Isolated DC-DC Converters Based on Inductive Coupling

The paper reviews the most interesting architectures of integrated isolated dc-dc converters based on inductive coupling. Circuit implementations for both power and data/control links are discussed by taking advantages of a 0.35-μm BCD technology with thick-oxide back-end. The paper is mainly addressed to isolated sensor interface and gate-driver applications. Innovative dc-dc converter architectures are proposed for both applications, highlighting advantages and drawbacks with respect to traditional implementations.