What is a monolithic inductor? What are its advantages and applications?

2022-05-19 14:22

The monolithic inductor comprises two components: the substrate and the winding assembly. The substrate is a molded alloy‑powder part, while the winding consists of enameled wire coils interconnected with oxidation‑resistant metal terminals. The winding assembly is embedded within the alloy powder and formed by die‑casting using an integrated molding machine. The SMD leads are made of oxidation‑resistant metal terminals, and the lead-out pins of the winding are directly formed on the substrate surface, resulting in higher inductance and lower leakage inductance compared with conventional inductors. This inductor features an SMD‑style design that minimizes damage to the component and enhances manufacturing efficiency.

Integrated molded inductor It comprises two components: the housing and the winding assembly. The housing is a molded alloy‑powder part, while the winding assembly consists of interconnected enameled wire coils and oxidation‑resistant metal terminals. The winding assembly is embedded within the alloy powder and formed by an integrated molding press. The SMD leads are made of oxidation‑resistant metal terminals, with the lead‑out pins formed directly on the substrate surface, resulting in higher inductance and lower leakage inductance compared to conventional inductors. This inductor features an SMD package design that protects the component and enhances production efficiency.

　　As the clock speeds of CPUs in computers and smartphones continue to rise, the demands for stable power supply and effective filtering are becoming increasingly stringent. 。 And monolithic inductors happen to solve this problem. ， It can operate continuously under high‑current conditions while providing a stable power supply to the CPU. Of course, the primary function of an inductor is filtering. In this regard, integrated inductors offer no advantage. Superior material properties and a specialized structural design ensure greater stability; lower impedance translates into improved vibration resistance and higher conversion efficiency.

　　 Integrated molded inductor Advantages: Surface-mount high-power inductors, characterized by their compact size. 、 High quality 、 High energy storage and low grounding resistance, compact size, greater space efficiency, and improved power savings. ； For the same footprint, integrated inductors can handle higher currents than conventional power inductors. Around 30% ； It employs a magnetic adhesive coating structure, significantly reducing hum noise. ； Metallized electrodes are welded onto the ferrite core, providing excellent vibration and shock resistance as well as long-term durability. ； Closed magnetic circuit design, minimal flux leakage, and strong electromagnetic interference immunity. ； Its range of applications is also very broad. ， For example LED lighting, smartphones, flat-panel TVs, laptops, desktop computer servers, graphics cards, and personal navigation systems.

　　Applications of Monolithic Inductors in New Energy Vehicles: Integrated molded inductor Generally used for DC‑DC converters provide functions such as voltage regulation and filtering, while in new‑energy vehicles, multimedia and safety systems are largely related to DC‑DC power supplies. Inductors are widely used in the electronic circuits of new‑energy vehicles and constitute an essential component of automotive electronics. Based on their function, they can be classified into two categories: one… 、 Vehicle electronic control systems, such as sensors, DC/DC converters, etc. ； Two 、 In-vehicle electronic control systems, such as in-vehicle CD/DVD audio systems, GPS navigation systems, and more. Integrated inductor solutions are evolving toward higher efficiency, smaller form factors, and lower noise, fully leveraging the advantages of new-energy vehicles. ， It primarily serves functions such as filtering, oscillation, delay, and band-stop filtering. Function, as well as signal shielding, noise filtering, current stabilization, and electromagnetic interference suppression, among others. A DC/DC converter is a power conversion device used in DC power supplies. ， Boost converter for new energy vehicles DC/DC converters are primarily used to step up voltage for high-voltage systems, thereby meeting the operational requirements of motor drive systems.