⚠️The Problem :

Single-phase SMPS (Switched Mode Power Supply) designs can become inefficient and hot under high current loads. As power demand increases, so does ripple current, thermal stress, and component wear—especially in compact or mission-critical applications.

✅The Solution :

Multi-phase SMPS distributes the power load across multiple interleaved phases, reducing ripple, heat, and improving overall efficiency. Each phase operates out-of-sync with the others, smoothing current delivery and reducing peak currents in inductors and capacitors.

🚗Practical Example :

Imagine you’re designing a power supply for an FPGA development board that draws 30A. A single-phase design would stress the components and create excessive heat. Instead, using a 3-phase SMPS, each phase supplies just 10A. The workload is shared, the inductor sizes are smaller, and the output ripple drops significantly.

📐 Sample Calculation :

For a 30A load using 3 phases:

Current per phase=330A​=10A

If each phase uses a 2mΩ sense resistor:

Power loss per phase=I2×R=102×0.002=0.2W

Total = 0.6W, much lower than a single-phase equivalent.

🛠️ Product Recommendation :

Try high-efficiency MOSFETs or gate drivers for your design:
👉 Smartx Prokits

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