Based on the diversified layout of power inductors, Murata further increases its investment in the passive component market

Many of the components behind the electronic products we use in our daily lives are manufactured by Japanese manufacturers. Take Murata Manufacturing Co., Ltd. for example. As one of the earliest manufacturers to develop electronic components, Murata's ceramic capacitors, filters, RF components and many other products have brought "internal innovation" to electronic devices such as mobile phones, computers, and home appliances. Murata has devoted itself to research in the field of electronic components for many years, insisting on innovation from the source, creating functional ceramic materials with excellent characteristics, and making ceramic capacitors one of Murata's most historic product lines. But in fact, in addition to MLCC, Murata also has a good performance in power inductors.

The so-called power inductor is generally used in the power supply and can withstand large currents. The main uses of inductors in power circuits are "voltage conversion" and "choke", and they are used in various electronic devices. From the material point of view, Murata's power inductor products can be divided into metal alloy powder (integrated molding) inductors and ferrite inductors. From the product process point of view, they can be divided into winding inductors and stacked inductors.

According to Murata, the metal alloy power inductor they launched mainly uses winding wire, metal alloy material and electrode. The winding wire is formed into one piece by metal alloy material to form the electrode, which is an extremely simple structure. In this simple structure, Murata uses unique material technology, winding technology and molding technology to commercialize the inductor.

Murata said that the power inductors designed based on their technology not only have high magnetic saturation characteristics (a. can pass larger current; b. are less affected by external temperature), but also have smaller dimensions. In addition, in addition to suppressing the generation of howling, these inductors also have good EMC performance, low magnetic leakage and impact resistance.

Compared with other competitors' solutions, Murata's metal alloy power inductors are about 50% smaller in size than ferrite power inductors when they have the same characteristics (inductance, saturation current, etc.), which can achieve miniaturization and thinness.

When the current increases sharply, the inductance of the metal alloy inductor decays slowly, thus avoiding the risk of short circuit and misoperation caused by the rapid decay of the inductance of the ferrite inductor.

Murata power inductors, which combine the above advantages, can be widely used in fields such as communications, healthcare, industry, home appliances and automotive electronics, especially in automotive infotainment equipment, power transmission/and safety equipment in automotive electronics. Currently, they are actively selling in the mobile phone market and the automotive market, and have achieved good results. For example, Murata's DFEH/G series metal alloy inductors and MDH ferrite inductors that can meet the requirements of harsh environments have been highly recognized by automotive users.

When asked about the future layout of these products, Murata said that the communication market is the main market, and the automotive market, energy, medical market and other emerging markets are also the focus of sales expansion, and they are actively carrying out sales expansion activities. Based on the premise that Murata's power inductors have been adopted by many customers in the communication market, by making use of these actual cases, Murata's product sales in the automotive market and the communication market will be greatly increased.

By Li Shoupeng, Semiconductor Industry Observer

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