• Capacitors And Inductors Pdf

Trilogy Of Inductors Pdf Merger. This is only a preview of the January 2015 issue of Silicon Chip. You can view 36 of the 104 pages in the full issue and the.

Overview of Power Inductors Power inductors are used to store energy, provide lower signal losses, filter EMI noise, and yield lower core losses in applications where voltage conversion is necessary. Before you can gain a good understanding of power inductors, it’s important to first familiarize yourself with the larger category of inductors. What Are Inductors?

To understand inductors as a whole, you need a basic knowledge of magnetism and a few fundamental electromagnetic field laws. You can learn more about the basic principles of inductive components in our Trilogy of Magnetics design guide.

Basically, an inductor is a passive electrical component with two terminals that store energy in their magnetic field. Inductors are designed to create inductance for conductors. Generally, inductors are wrapped around a core material (such as iron) to increase inductance. There are many different types of inductors, including multilayer inductors, RF inductors, toroid inductors, wire-wound inductors, and, of course, power inductors. What Are Power Inductors?

A power inductor is an electronic component that both receives and stores electrical energy by using a magnetic field (usually created with a tightly coiled conductive wire). Power inductors serve to maintain a steady current in an electrical circuit with a varying current and/or voltage.

With switched-mode power supplies becoming increasingly common, semiconductor manufacturers have begun offering a wide range of power inductors with simplified circuit design. To fully utilize the advantages of switching regulators, you should take care in selecting the appropriate storage choke. Power inductors can be differentiated using criteria such as inductance, DCR, rated current, saturation current, and frequency range. They can also be categorized by type (see “Types of Power Inductors” below). Applications of Power Inductors The applications of power magnetics in general are vast and varied:.

Capacitors And Inductors Pdf

Filter circuits. Audio circuitry. Video circuitry. Interfaces. RF circuits. Motor control units. SMPS basics circuits.

Mains filters. Power supply The smaller subset of power inductors has more specific applications. There are three main applications of power inductors:. Conducted EMI noise filters in AC inputs.

Low-pass frequency noise filters for low-frequency ripple current noise. Energy storage in DC/DC converters. Types of Power Inductors While there are several types of power inductors, they can be divided into three main categories: flatwire inductors, coupled inductors, and compact SMD power inductors. Flatwire Inductors Flatwire inductors use a flat wire inside the choke in place of the conventional round wire. There are several advantages of flatwire inductors:. Large wire surface (thus low high-frequency losses).

Low winding capacity (thus high self-resonant frequency). Low DC resistance (thus low self-heating at high prolonged currents).

High packing density (thus smaller component size than comparable chokes with round wire). High operating temperature (up to max. 150°C) The are great inductors for high performance and low wire losses. It comes in two different sizes and is optimized for power supplies running high switching frequencies.

Coupled Inductors Coupled inductors consist of two discrete inductors that are magnetically coupled. Benefits of coupled inductors include:. Current-ripple cancellation. Low leakage inductance. Increased efficiency Wurth Electronics Midcom offers two coupled inductor families: WE-DD and WE-TDC.

The is one of the industry’s most-used coupled inductor families. The best feature of WE-DD is its great flexibility in size. It offers two standard footprints, each with different heights, and is available with both a crossed and a straight pin layout. For applications in which board space or height is restricted, the is the perfect alternative. This new generation of low-profile coupled inductors offers low self losses, low leakage inductance, and high mechanical stability on PCB.

To learn more about coupled inductors from Wurth Electronics Midcom or to order your coupled inductor design kit today,. Compact SMD Power Inductors Compact SMD power inductors are low-profile inductors that are intended for surface-mount devices. Benefits of compact SMD power inductors include:. Wide inductance. Low DC resistance Wurth Electronics Midcom carries two new series of compact SMD power inductors: WE-PMMI (Power Multilayer Metal-Alloy Inductor) and (Power Molded Chip Inductor). These power inductors are ideal for highly efficient DC/DC switching controllers for a low space requirement.

Popular Power Inductors from Wurth Electronics Midcom In addition to the power inductors already listed, Wurth Electronics Midcom features several popular power inductor products, including and. WE-MAPI WE-MAPI is the world’s smallest power inductor made from magnetic iron alloy. With a package height of just 1 millimeter and a footprint of 1.6 x 1.6 mm, WE-MAPI is extremely tiny — but extremely strong.

There are many advantages to the of SMD shielded power inductors:. High rated currents. Compact design. Magnetically shielded. High current capability. High saturation currents.

Low leakage flux noise. Several sizes available To learn more about the world’s most efficient power inductor, you can or visit our. Ready for free samples or more product info? WE-EHPI The is designed for energy harvesting applications.

These power inductors offer high efficiency based on a very low ohmic resistance of each winding und a core especially developed for a rugged environment. Other benefits of WE-EHPI include:. Low profile (4 mm). Small footprint (6 x 6 mm). Very low secondary RDC. Multiple options of turn ratios available.

Separated welding/soldering pads for increased reliability. Optimized winding technology for increased performance To learn more, visit our. You’ll be able to see a full list of energy harvesting applications as well as order free samples.

More Power Inductors from Wurth Electronics Midcom That’s just the beginning of our resources available for power inductors. To see our full range of product offerings, in our online catalog,. You can also read our.