The **MPV310R8PJ-R** is a high-performance, shielded power inductor typically utilized in DC-DC converter applications and power management modules. It belongs to the **MPV** series, known for its molded construction which offers excellent electromagnetic interference (EMI) shielding and high current density. --- ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | ~4.5 mΩ (Nominal) | | **Saturation Current (Isat)** | ~18.0 A to 22.0 A | | **Heating Current (Irms)** | ~12.0 A to 15.0 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Surface Mount (SMD) | | **Shielding** | Shielded (Molded Construction) | --- ## Key Features ### 1. Molded Construction The inductor is manufactured using a metal alloy powder pressed around the coil. This "molded" design eliminates the traditional air gap found in ferrite cores, leading to: * **Soft Saturation:** The inductance drops gradually as current increases, rather than dropping sharply. * **Reduced Acoustic Noise:** The solid structure minimizes magnetostriction (buzzing). ### 2. EMI Shielding Because the magnetic material completely encloses the winding, the component has very low magnetic flux leakage. This is critical for high-density PCB layouts where components are placed close to sensitive signal lines. ### 3. Low DCR The use of flat-wire or high-conductivity copper helps maintain a low Direct Current Resistance (DCR). This results in lower power loss and higher efficiency in power conversion stages. --- ## Common Applications * **Voltage Regulator Modules (VRM):** Used in CPU/GPU power supplies. * **DC-DC Converters:** Buck, Boost, and Buck-Boost topologies. * **Portable Electronics:** Tablets, laptops, and handheld devices requiring thin-profile high-current inductors. * **Automotive Infotainment:** Power filtering for dashboard displays and sensors. --- ## Example Usage Circuit In a typical Buck Converter, the MPV310R8PJ-R would be placed as the output filter inductor: ```text Input (Vin) ----> [High-Side FET] ----+---- [Inductor: MPV310R8PJ-R] ----> Output (Vout) | | [Low-Side FET] [Filter Capacitor] | | GND GND ```