The latest miniature high-voltage MLCC capacitor that the Korean has just marketed displays a capacitance doubled compared to previous models and is aimed at DC-DC converters and on-board chargers for electric vehicles.
Valued for their compactness, the high voltage rating they can withstand, and the stability of their capacitance over a wide temperature range, multilayer ceramic capacitors (MLCCs) are becoming increasingly popular in modern automobiles as manufacturers manage to increase their capacitance.
© Samsung Electro-Mechanics
It is therefore no coincidence that Samsung Electro-Mechanics is completing its range of miniature high-voltage MLCCs intended for electric vehicles, with a model whose capacitance has been doubled compared to previous versions. Housed in a compact SMT package measuring just 3.2 x 2.5 mm and barely 1.8 mm high, the model referenced CL32B104KHU6PN# thus supports a maximum nominal voltage of 630 Vdc and displays a capacitance value of 100 nF, where the most efficient model in the Korean catalog did not exceed 47 nF, all other characteristics being otherwise identical. Enough to meet the miniaturization and high efficiency requirements required for power equipment embedded in electric vehicles such as DC-DC converters and on-board chargers (OBC).
Using an XR7 dielectric, this component also displays a capacitance variation rate of +/-15% in the temperature range ranging from -55°C to +125°C and a tolerance of +/-10%
While high voltages are required for electric vehicle propulsion, air conditioning system and starter motor, a DC-DC converter is required to convert these high voltages to 12 Vdc to power in-vehicle infotainment systems, For example. This type of DC-DC converter requires MLCCs for functions such as EMI filtering, particularly MLCCs which can provide a high capacitance value at high voltages, such as the CL32B104KHU6PN# model of which samples are available. already available on request.
