DIAMET CORPORATION Product Lineup

Solving issues such as "limitations of substrate area" and "cost increase due to SiC adoption." Our unique operating mode reduces magnetic component size by one-third without increasing frequency. We achieve dramatic downsizing while suppressing heat and noise. 【Challenges and Applications We Can Address】 ◎ Space Constraints: Reducing substrate area by two-thirds and magnetic components (such as transformers) by one-third (for applications like in-vehicle chargers, robotic joints, and 1U-sized communication boards). ◎ Cost Control: Achieving high efficiency using general-purpose silicon without relying on expensive SiC/GaN. ◎ Heat and Noise Mitigation: Halving ripple current and reducing magnetic flux density (ΔB) for low loss and low noise. 【Features of Our Unique Topology】 Adopting low permeability powder core "MBS" with "ON-ON / ON-OFF" modes. By suppressing the amplitude of the excitation current, we have made it possible to minimize transformers and capacitors. ★【Free Offer】Simple Calculation Tool & Technical Materials We are distributing a tool that allows you to instantly estimate "how much smaller it can get under your conditions." You can view detailed measurement data and more from the <Catalog Download>.

Achieving miniaturization of passive components in ON-ON converters necessitates increasing the operating frequency, but this also leads to a decline in power conversion efficiency. The new circuit topology proposed by our company, the isolated “TriMagiC Converter(TM),” replaces ferrite with our proprietary magnetic material “MBS,” which features low permeability, high saturation magnetic flux density, and low loss. Powdered cores are used for the magnetic components of the transformer and resonant inductor. Our prototype testing has confirmed that by utilizing “MBS” in an ON-ON & ON-OFF operating mode circuit, we can simultaneously achieve high conversion efficiency and significant size reduction—reducing the total volume of magnetic components to one-third of conventional designs while still handling high power. The isolated “TriMagiC Converter(TM) achieves miniaturization and high efficiency of Switched Mode Power Supplies without the use wide band-gap devices such as SiC or GaN, even utilizing conventional Si switching devices. Moreover, replacing conventional phase-shifted converters with this new topology is straightforward. This document provides an overview of the features of the new circuit topology.

As data centers become more densely packed, improving power efficiency and saving space are important challenges. To operate more servers in a limited space, miniaturization and high efficiency of power units are essential. Our "Isolated TriMagiC Converter (TM)" addresses these challenges. 【Usage Scenarios】 - High-density server racks - Blade servers - Power systems for data centers 【Benefits of Implementation】 - Reduction in power board size - Improved power efficiency - Increased number of servers due to space savings

This method uses a low permeability powder core in the main transformer and adopts ON-ON and ON-OFF operating modes, enabling the miniaturization of magnetic components to about one-third and the power board size to about two-thirds compared to conventional circuits (according to our estimates). Additionally, the reduction of the amplitude of the excitation current leads to a decrease in ΔB (change in magnetic flux density), achieving low loss. Instead of increasing the operating frequency to achieve miniaturization, we contribute to space-saving in power circuits by innovating the handling of magnetic components. It is also possible to further miniaturize by increasing the operating frequency. High efficiency and compactness of DC-DC converters can be achieved without using SiC or GaN, while still utilizing general-purpose Si. We offer our unique powder core "MBS" series suitable for this circuit method. 【Features】 ■ Miniaturization and efficiency improvement of DC-DC converters are achievable. ■ ΔB (change in magnetic flux density) can be suppressed, enabling low loss. ■ The output composite ripple current is about half that of conventional technology, allowing for a reduction of output capacitors by half. ★ We are currently offering a simple calculation tool. Please contact us if you are interested. You can also view technical materials from the download button.

This method uses a low permeability powder core "MBS" in the main transformer and adopts ON-ON / ON-OFF operating modes, enabling the miniaturization of magnetic components to about 1/3 and the power board size to about 2/3 compared to conventional circuits (according to our estimates). In addition to achieving space-saving in the power circuit without increasing the operating frequency, further miniaturization is possible by increasing the operating frequency. It is possible to achieve a compact and high-efficiency DC-DC converter without using SiC or GaN, while still using general-purpose Si. 【Features】 ■ Realizes miniaturization and high efficiency of DC-DC converters (power circuits) ■ By suppressing the amplitude of the excitation current, it also achieves a reduction in ΔB (change in magnetic flux density) and the resulting low loss ■ The output ripple current is approximately halved compared to conventional technology, allowing for a reduction of the output capacitor by half ★ We are currently offering a simple calculation tool. Please contact us if you are interested. You can also view technical materials by clicking the "Download Catalog" button. ★ We will be exhibiting at the Techno Frontier Power System Exhibition and will also be speaking at the organizer's seminar. For more details, please refer to the basic information section.

In the high-frequency operation of DC-DC converters and onboard chargers, challenges arise such as "wanting to reduce core iron losses" and "wanting to miniaturize magnetic components." In the range of tens to hundreds of kHz, material selection according to frequency significantly affects efficiency and size. At Diamet, we leverage insulation coating technology to develop high-frequency pressed powder cores that achieve both high magnetic flux density and low iron losses. We propose materials tailored to specific applications. ■ Support for high-frequency range ▼ Developing alloy cores that can handle tens to hundreds of kHz ▼ Pursuing the balance of high magnetic flux density and low iron losses ▼ Supporting miniaturization and high efficiency of power supplies through high-frequency operation ■ Material lineup ▼ Standard material MBS-RXA6 offers low loss and high permeability ▼ MBS-RXA61 improves upon MBS-RXA6 with lower loss and higher permeability ▼ MBS-RXA7 is a high-frequency low iron loss material for resonant coils *For more details, please download the PDF or feel free to contact us.

In boost circuits for HEVs and PVs, there are challenges such as the desire to "miniaturize and lighten the reactor" while accommodating large currents and "reducing iron losses." Additionally, core designs that consider heat resistance and assembly strength are necessary. Daiamet's powdered core for boost reactors offers a lineup of high magnetic flux density and low iron loss materials. We possess molding presses ranging from 40 to 800 tons, capable of mass production from small, precise shapes to large, complex shapes. ■ Miniaturization and High Efficiency ▼ Supports miniaturization and weight reduction through high magnetic flux density ▼ Accommodates large current applications ▼ Achieves high efficiency through reduced eddy currents and minimized gaps ■ Material Proposals Based on Applications ▼ Offers pure iron-based, alloy-based, and pure iron + alloy-based options ▼ Development examples that enhance heat resistance, usable up to 240°C ▼ Development examples for gapless designs through reduced permeability ▼ Development examples aimed at increasing mechanical strength to prevent chipping during assembly Materials can be customized according to usage conditions, such as for boost reactors for HEVs or reactors for PVs. Documents summarizing the material lineup, magnetic properties, and development examples, as well as more detailed benefits of miniaturization and high efficiency of reactors, can be downloaded from the link below.