Integrated power passives

A multi-layer film-stack and method for forming the multilayer film-stack is given where a series of alternating layers of conducting and dielectric materials are deposited such that the conducting layers can be selectively addressed. The use of the method to form integratable high capacitance density capacitors and complete the formation of an integrated power system-on-a-chip device including transistors, conductors, inductors, and capacitors is also given

A new flyback DC-to-three-phase converter with sinusoidal outputs

Systematic extension of any dc-to-dc converter leads to its dc-to-three-phase equivalent characterized by sinusoidal output voltages and fast dynamic responses. This genralization principle is illustrated for the special case of the flyback topology. State-space averaging has modeled with a high degree of accuracy the performance of dc-to-dc converters. Here it is combined with the stationary-to-rotating coordinate transformation, customarily used in polyphase ac systems, to results in an effective analysis method for switched-mode dc-to-polyphase converters

Efficient simulation of coupled circuit-field problems: Generalized falk method

Abstract—The proposed generalized Falk (GF) method offers an extremely simple and convenient way to solve coupled circuit-field problems in circuit simulators by transforming the discretized governing-field equations into guaranteed stable-and-passive one-dimensional (1-D) equivalent-circuit systems, which are then combined with the circuit part of the overall coupled problem. More efficient than the traditional Lanczos-type methods, the GF method transforms a general finite-element system represented by a system of full matrices into an identity capacitance (mass) matrix and a tridiagonal conductance (stiffness) matrix. No positive poles are produced; all transformed matrices remain positive definite. The resulting 1-D equivalent-circuit system contains only resistors, capacitors, inductors, and current sources. Several numerical examples are provided. Index Terms—Converters, coordinate transformation, coupled circuit-field problems, electrothermal simulation, insulated gate bipolar transistor (IGBT) device, power electronics, reorthogonalization, stable and passive one-dimensional (1-D) equivalent thermal circuit. I