SAMSUNG ELECTRO-MECHANICS

▷ With the growing demand for AI servers, there has been a substantial increase in power consumption within data centers.

[Figure 1] The power supply units (PSU) for AI servers require power levels exceeding 4kW, and the heat generated during the power conversion and distribution processes inevitably lead to higher operational costs. Consequently, extensive research is being conducted to optimize power efficiency, including the improvement of cooling systems and other associated measures to ensure more effective power supply solutions. 

▷ In recent developments, LLC resonant circuits have been extensively implemented to enhance power efficiency, with high-voltage C0G MLCCs being incorporated into these systems. The capacitors utilized in resonant circuits, specifically high-voltage C0G MLCCs, offer a notable advantage over alternative capacitors due to their minimal variation in capacitance with respect to temperature fluctuations. [Figure 2] Furthermore, self-heating is generated within resonant circuits as a result of switching voltages and the ESR of the capacitor. The low ESR characteristic of high-voltage C0G MLCCs significantly mitigates this self-heating, while also providing the added benefit of a compact form factor compared to Film Capacitor.

▷ In the resonant circuit section of the power supply unit (PSU) for servers, between 10 and 80 MLCCs are incorporated in a series-parallel configuration. To enhance the power efficiency of the LLC resonant circuit, using MLCC with minimal capacitance variation due to temperature changes is important. MLCC parallel connected to MOSFET as snubber circuit changes voltage slope which is dependent on power load. As a result it helps improving circuit noise. MLCC in resonant tank circuit helps DCDC converter to have output-voltage control stability because MLCC guarantee stable capacitance over temperature.

▷ Samsung Electro-Mechanics is currently mass-producing the 1210 C0G 1000V 22nF product, which is designed to operate reliably even in high-voltage environments, offering exceptional quality, reliability, and safe electrical performance. In addition, Samsung Electro-Mechanics also offers a diverse lineup of products in various capacitances and voltages, including the 1206 size  configurations.

Lineup for high voltage C0G MLCC (Normal-Termination)

Lineup for high voltage C0G MLCC (Epoxy-Termination)

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