The **FP1110V1-R22-R** is a high-current, high-frequency Power Inductor, typically manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the FP1110 series and is designed specifically for high-speed multi-phase voltage regulator modules (VRMs). --- ### 1. Key Technical Specifications The part number defines the physical and electrical characteristics of the component. | Parameter | Specification | | :--- | :--- | | **Inductance** | 220 nH (0.22 µH) | | **Tolerance** | ±10% | | **DCR (DC Resistance)** | ~0.29 mΩ (milliohms) | | **Saturation Current ($I_{sat}$)** | ~64 A to 80 A (depending on temperature) | | **RMS Current ($I_{rms}$)** | ~45 A | | **Package Size** | 11.0 mm x 8.0 mm x 10.0 mm | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ### 2. Physical Construction The "FP" in the series stands for **Flat-Pac**. These inductors utilize a unique construction: * **Core Material:** Ferrite core material, which allows for low core losses at high frequencies (up to 2 MHz). * **Lead Frame:** Features a robust solder pad design for secure SMT placement. * **Vertical Orientation:** The "V" in the part number indicates a vertical orientation, which saves horizontal PCB "real estate" at the cost of component height. --- ### 3. Applications This specific inductor is engineered for high-density power applications where efficiency and current-handling are critical: 1. **Multi-phase Buck Converters:** Used in CPU/GPU power supplies for servers and workstations. 2. **Voltage Regulator Modules (VRM):** Specifically designed for "point of load" (POL) power regulation. 3. **Data Centers:** High-current power distribution for networking equipment. --- ### 4. Advantages * **Low DCR:** The extremely low DC resistance minimizes conduction losses, leading to higher system efficiency and less heat generation. * **High Saturation:** The inductor can handle high peak currents without the inductance dropping significantly. * **Thermal Stability:** Designed to operate in high-temperature environments (typically up to 125°C). ---