Power Requirements for AI Servers
With the rise of AI and high-performance computing, components in servers, such as processors and GPUs, demand increasingly higher power. This necessitates stricter requirements for server power supplies and related components.
Servers generally need to maintain an average mean time between failures (MTBF) of over 60,000 hours, provide wide voltage input, and ensure stable voltage and current output without downtime. During peak and valley fluctuations in data processing, they require robust instantaneous overload capacity to prevent issues like blue screens and system freezes. The integration of third-generation semiconductor materials, such as SiC and GaN power devices, also calls for the next generation of servers to be more compact while effectively managing heat dissipation.
In server power supplies, capacitors typically provide smoothing, DC support, and filtering during voltage input. They supply power at the DC-DC conversion stage and offer synchronized rectification and EMI filtering in rectification and filtering processes.
YMIN capacitors feature high capacitance density, compact size, low ESR, and strong ripple current tolerance, positioning them at the forefront of the domestic industry. They have partnered with renowned international manufacturer Navitas Semiconductor. Using Yongming’s CW3 series capacitors, they developed a 4.5 kW server power supply that leads globally with an ultra-high power density of 137W/in³ and efficiency exceeding 97%, meeting the growing power demands of AI data centers with ease.
01 YMIN Capacitors Key Features:
– Long Lifespan, Stable Performance: YMIN capacitors can operate continuously for 24/7, meeting a 125°C, 2000-hour lifespan standard with high reliability, significantly reducing maintenance needs. Capacitance remains stable, with a long-term change rate of no more than -10%, ensuring consistent performance.
– High Surge Current Endurance: Each YMIN capacitor can withstand surge currents over 20A, allowing server power supplies to handle overloads smoothly without causing blue screens, reboots, or GPU display issues.
– Compact Size, High Capacity: With reliable DC support and a miniaturized form factor, YMIN capacitors integrate seamlessly with third-generation semiconductor components like SiC and GaN, promoting power supply downsizing. Despite their small size, they offer up to 1200μF capacitance at a 450V rating, ensuring strong current supply.
– Ultra-Low ESR and Ripple Endurance: YMIN capacitors achieve ESR values below 6mΩ, providing powerful filtering and minimal ripple temperature rise. Over extended periods, the ESR remains within 1.2 times the initial specification, reducing heat generation and enhancing energy efficiency while lowering overall cooling requirements for server power supplies.
02 YMIN Capacitor Selection Recommendations
| Liquid Snap-in Aluminum Electrolytic Capacitor | |||||
| Series | Volt（V） | Capacitance（uF） | Dimension（mm) | Life | Product advantages and features |
| CW3 | 100 | 4700 | 35*50 | 105℃/3000H | High capacitance density, low ESR, and high ripple current resistance |
| 450 | 820 | 25*70 | |||
| 450 | 1200 | 30*70 | |||
| 450 | 1400 | 30*80 | |||
| Polymer Solid Aluminum Electrolytic Capacitors & Polymer Hybrid Aluminum Electrolytic Capacitors | |||||
| Series | Volt（V） | Capacitance（uF） | Dimension（mm) | Life | Product advantages and features |
| NPC | 16 | 470 | 8*11 | 105℃/2000H | Ultra-low ESR/high ripple current resistance, high current shock resistance/long-term high temperature stability |
| 20 | 330 | 8*8 | |||
| NHT | 63 | 120 | 10*10 | 125℃/4000H | Vibration resistant/meet AEC-Q200 requirements Long-term high temperature stability/wide temperature stability/low leakage Tolerant to high voltage shock and high current shock |
| 80 | 47 | 10*10 | |||
| Multilayer Polymer Aluminum Solid Electrolytic Capacitor | |||||
| Series | Volt（V） | Capacitance（uF） | Dimension（mm) | Life | Product advantages and features |
| MPD19 | 25 | 47 | 7.3*4.3*1.9 | 105℃/2000H | High withstand voltage/low ESR/high ripple current |
| MPD28 | 10 | 220 | 7.3*4.3*2.8 | High withstand voltage/Ultra-large capacity/Low ESR | |
| 50 | 15 | 7.3*4.3*2.8 | |||
| Conductive Tantalum Capacitor | |||||
| Series | Volt（V） | Capacitance（uF） | Dimension（mm) | Life | Product advantages and features |
| TPD40 | 35 | 100 | 7.3*4.3*4.0 | 105℃/2000H | Ultra-large capacityHigh stabilityUltra-high withstand voltage 100V max |
| 50 | 68 | 7.3*4.3*4.0 | |||
| 63 | 33 | 7.3*4.3*4.0 | |||
| 100 | 12 | 7.3*4.3*4.0 |
03 Conclusion
The integration of third-generation semiconductors will drive server evolution towards higher computational power, improved energy efficiency, and more compact form factors, placing greater demands on server power supplies. YMIN capacitors, with their established track record in server power applications, offer key advantages such as compact size and ultra-high capacitance density. These exceptional qualities facilitate power supply miniaturization and enhance power output, making YMIN capacitors the optimal choice for server power applications.
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