From Navitas Semiconductor’s Choice of YMIN Capacitors: A Discussion on Capacitor Selection for AI Data Center Power Supplies

Navitas Semiconductor Launches CRPS185 4.5kW AI Data Center Power Solution: Optimizing Capacitor Selection

（The picture material comes from Navitas official website）

Navitas Semiconductor recently introduced its latest power solution—the CRPS185 4.5kW AI Data Center Server Power Supply. Designed to meet the high performance and reliability demands of AI data centers, the CRPS185 represents a significant advancement in power technology. This solution not only achieves industry-leading power density of 137W/in³ and efficiency exceeding 97%, but it also incorporates advanced capacitor technology to enhance overall performance.

In the CRPS185 power solution, YMIN’s CW3 series aluminum electrolytic capacitors are chosen, with a rated voltage of 450V and a capacitance of 1200µF. These capacitors are renowned for their excellent high-frequency performance and stability, making them highly suitable for high power density and high efficiency power designs. The low ESR (Equivalent Series Resistance) of the CW3 series helps to reduce energy loss, while its capacitance and durability provide reliable support under high load conditions.

Choosing the right power supply capacitors is crucial for optimizing power system performance. Different types of capacitors have various advantages and disadvantages, affecting the power supply’s efficiency, stability, and cost. Here are the main characteristics and applications of Laminated Solid State Aluminum Electrolytic, electrolytic, and tantalum capacitors:

Advantages and Disadvantages of Different Capacitor Types

• Laminated Solid State Aluminum Electrolytic Capacitors:
  • Advantages: Laminated Solid State Aluminum Electrolytic Capacitors have lower ESR and higher frequency response, making them suitable for high power density and high-frequency applications. They offer high reliability and stability even in harsh operating environments.
  • Disadvantages: While these capacitors perform excellently in high-frequency applications, they are relatively costly and may have limitations in capacitance selection.
• Electrolytic Capacitors:
  • Advantages: Electrolytic capacitors offer high capacitance values, making them ideal for large-capacity filtering applications. Their cost-effectiveness makes them a common choice for power components.
  • Disadvantages: Electrolytic capacitors have higher ESR, which can lead to greater energy loss. Their lifespan is relatively short and they are more susceptible to temperature and voltage variations.
• Tantalum Capacitors:
  • Advantages: Tantalum capacitors are compact and have high capacitance, making them ideal for space-constrained applications. They also have low ESR, which improves power efficiency and stability while maintaining more stable capacitance.
  • Disadvantages: Tantalum capacitors are relatively expensive and can fail under over-voltage conditions, requiring careful selection and usage.

The CRPS185 power solution utilizes YMIN’s CW3 series capacitors to optimize high-frequency performance and capacitance while ensuring overall efficiency and stability. This highlights key technical requirements for high-performance power design and provides reliable support for high-load environments such as AI data centers.

Conclusion Navitas Semiconductor’s CRPS185 4.5kW AI Data Center Power Supply Solution, through advanced capacitor selection and optimization, showcases the latest breakthroughs in efficient power technology. Understanding the advantages and disadvantages of different capacitor types helps designers make the best choices for high-performance power systems. The successful application of the CRPS185 solution not only represents cutting-edge power technology but also provides robust support for the demanding computational environments of AI data centers.