High-Voltage MLCCs for Electric Vehicle DC-DC Converters

Samsung Electro-Mechanics has recently introduced a cutting-edge high-voltage MLCC (multi-layer ceramic capacitor) designed specifically for electric vehicle applications, including DC-DC converters. This new X7R MLCC boasts a capacitance of 100nF and a maximum rated voltage of 630V, and mass production is already in progress.

The automotive industry is witnessing a surge in the adoption of MLCCs, driven by the growing demand for electrification and enhanced functionality from consumers. Factors such as miniaturization, high voltage capabilities, stability, and increased capacitance are fueling the proliferation of MLCCs in vehicles. In response to these trends, Samsung Electro-Mechanics has developed the CL32B104KHU6PN MLCC to meet the evolving needs of the automotive sector.

One of the standout features of Samsung's automotive MLCCs is their world-leading capacitance. The X7R MLCC, available in a compact 1210 (3.2 x 2.5mm) form factor, offers a high rated voltage of 630VDC with a capacitance change rate of ±15% at temperatures ranging from -55 to 125℃. This makes the component ideal for use in EV DC-DC converters and on-board chargers (OBCs).

With the expansion of capacitance to 100nF in the X7R 630V line-up, Samsung's MLCC devices are well-suited for applications requiring higher power capabilities. For instance, the CL32C223JIV1PN 22nF MLCC, produced at 1000V in a 3.2 x 2.5mm form factor, demonstrates the company's commitment to innovation in the automotive sector.

Electric vehicles rely on various components to function efficiently, including DC-DC converters that play a crucial role in managing voltage levels. While certain vehicle systems like the air conditioner and starter motor require higher voltages, a DC-DC converter steps down these voltages to 12VDC to power in-vehicle infotainment systems. This necessitates the use of multiple MLCC components for functions such as EMI filtering, emphasizing the importance of high capacitance at elevated voltages.

For companies interested in exploring Samsung's advanced MLCC solutions for automotive applications, samples are available upon request. To learn more about Samsung Electro-Mechanics and its range of products, visit their official website at www.samsungsem.com/global/index.do.