What is the connection between magnetic bead inductors and chip stacked inductors?
Inductors are energy storage components, while magnetic beads are energy conversion (consumption) devices. Chip stacked inductors are mostly used in power supply filter circuits to suppress conductive interference; magnetic beads are mostly used in signal circuits, mainly for EMI. Magnetic beads are used to absorb high-frequency signals. For example, some RF circuits, PLLs, oscillation circuits, and high-frequency memory circuits (DDR, SDRAM, RAMBUS, etc.) all require magnetic beads to be added to the power input part, while chip inductors are energy storage components used in LC oscillation circuits, medium and low frequency filter circuits, etc., and their application frequency range rarely exceeds 50MHz.
What are the advantages and characteristics of magnetic bead inductors in circuits?
Magnetic beads inductors are used to absorb high-frequency signals. Some RF circuits, PLLs, oscillation circuits, and high-frequency memory circuits (DDR SDRAM, RAMBUS, etc.) all require magnetic beads to be added to the power input part. Inductors are energy storage components used in LC oscillation circuits, medium and low frequency filter circuits, etc., and their application frequency range rarely exceeds 50MHZ. Inductors are generally used for ground connections, power connections are also used for inductors, and magnetic beads are used for signal lines? But in fact, magnetic beads should also be able to achieve the purpose of absorbing high-frequency interference? And inductors can no longer play the role of inductors after high-frequency resonance…
What are the advantages of chip stacked inductors over magnetic beads inductors?
- Multilayer inductor:
It also has good magnetic shielding, high sintering density, good mechanical strength. Compared with winding inductors, it has the following advantages: small size, which is conducive to the miniaturization of circuits, closed magnetic circuit, will not interfere with surrounding components, and will not be interfered by surrounding components, which is conducive to high-density installation of components; multilayer integrated structure, high reliability, good heat resistance, good solderability, regular shape, suitable for automated surface mounting production. The disadvantages are low pass rate, high cost, small inductance, and small Q value common mode inductance. In general, multilayer inductors cannot see the wire, multilayer inductors have good heat dissipation, smaller ESR value,
- Advantages of multilayer chip inductors compared to other inductors:
- a. Small size.
- b. Excellent solderability and solder resistance, suitable for flow soldering and reflow soldering.
- c. Closed circuit, no mutual interference, suitable for high-density installation.
- d. Non-directional, standardized automatic chip mounting appearance.
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