Capacitor Solution for High-Power Switch-Mode Power Supplies (SMPS)

1. Solution Introduction

In the world of data centers and telecommunications, efficiency and reliability are paramount. Power supplies achieving 80 PLUS Titanium ratings require every component to be optimized for minimal loss. The bulk storage capacitors in the Power Factor Correction (PFC) stage and the output filtering capacitors are key to meeting these stringent demands. This solution leverages Jianghai's high-performance capacitors to build SMPS units with maximum efficiency and power density.

2. Solution Block Diagram

3. Core Advantages of this Solution

• Maximum Efficiency: Utilizes low-ESR electrolytic and film capacitors to minimize I²R losses, helping to achieve high efficiency ratings like 80 PLUS Platinum and Titanium.
• High Power Density: Employs miniaturized, high-ripple current capacitors that allow for a more compact power supply design without sacrificing performance.
• Long-Term Reliability: Relies on long-life 105°C capacitors to ensure the power supply meets the extended operational life required in server and telecom infrastructure.

4. Recommended Bill of Materials (BOM)

Function	Recommended Series	Key Benefits	Link
PFC Bulk Capacitor	Jianghai CD 296 / CD 297	High ripple current, long life, compact size for high density.	View CD296
Output Filtering	Jianghai Solid Polymer Caps	Ultra-low ESR for excellent transient response.	Consult FAE
Resonant Tank (LLC)	Jianghai Film Capacitors	Stable capacitance, high frequency performance.	View Film Caps

Note: SMPS topology can vary greatly. The choice between film and electrolytic for the PFC stage depends on power level and frequency. Our FAEs can help model the trade-offs for your specific design.