Energy storage power chip inductor customization

How fesicr alloy power chip inductor is made?

The multilayer FeSiCr alloy power chip inductor is made using the doctor blade method to prepare FeSiCr alloy powder green sheets. Punch technology is used to form the vias on the green sheets. The vias are filled and conductor patterns are formed by silver paste screen-printing.

What materials are used in power inductors?

In the past, the materials used in power inductors were mainly Ni (Cu) Zn ferrites. Although they have the advantages of high permeability and high insulation resistance, they are easily magnetically saturated under large current because of their low saturation magnetization (poor DC superposition characteristics).

Why are on-chip inductive switching converters a problem?

However, one big problem is that the on-chip inductive switching converters for high-performance applications require large inductors that are implemented on the metal layers on chip, which may cause severe noise interference and special shielding process is needed for such inductors.

What are the inductor requirements for pwrsoc technology?

Higher integration lowers the cost and increases both efficiency and power density. Therefore, one of the most important inductor requirements for PwrSoC technology is the CMOS compatibility for on-chip integration. Other requirements are compact physical dimensions, a high-current capacity, and a high-quality factor for high efficiency 10.

Why are multilayer fesicr alloy chip power inductors so popular?

Since the thickness of multilayer FeSiCr alloy chip power inductors is much thinner than the winding and molding power chokes, they are in line with the thin smart phone trend and will thereby become the main power chip inductor type in use for the foreseeable future.

Which material is used in the manufacture of cofired multilayer chip inductors?

In the manufacture of cofired multilayer chip inductors, the inner conductor interactions with the surrounding laminate material are very important. Silver is the preferred inner electrode material due to its outstanding high conductivity and sinterability properties in air.