The **CPLE-3-50TR-R** is a high-performance, multi-phase power inductor designed by Eaton (formerly Coiltronics/Cooper Bussmann). It is specifically engineered for use with high-frequency multi-phase voltage regulator modules (VRMs). --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and physical characteristics of this component: | Parameter | Value / Specification | | :--- | :--- | | **Inductance (per phase)** | 50 nH | | **Number of Phases** | 3 Phases | | **Rated Current ($I_{sat}$)** | ~65A per phase (typical) | | **DC Resistance (DCR)** | 0.55 mΩ (typical) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Surface Mount (SMD) | | **Dimensions** | Approx. 13.5mm x 10.0mm x 5.0mm | --- ### 2. Core Functional Features * **Coupled Inductor Technology:** Unlike three separate inductors, the CPLE-3-50TR-R uses a magnetically coupled structure. This allows for improved efficiency and faster transient response in multi-phase buck converters. * **Low DCR:** The very low Direct Current Resistance (0.55 mΩ) minimizes conduction losses, which is critical for high-current applications. * **High Saturation Current:** It is designed to handle high peak currents without the magnetic core saturating, ensuring stability under heavy CPU/GPU loads. * **Controlled Leakage Inductance:** The design balances the coupling between phases to optimize the ripple current reduction. --- ### 3. Common Applications This part is typically found in high-density power management circuits, including: 1. **Computing:** Multi-phase VRMs for high-end CPUs (Intel/AMD) and GPUs (NVIDIA/AMD). 2. **Data Centers:** High-current Point-of-Load (POL) converters for servers and networking equipment. 3. **Industrial:** High-efficiency DC-DC converters requiring compact footprints. --- ### 4. Part Number Breakdown The nomenclature follows Eaton's standard naming convention: * **CPLE:** Series designation (Coupled Power Low Profile). * **3:** Indicates the number of phases (3-phase). * **50:** Represents the inductance value (50nH). * **TR:** Tape and Reel packaging. * **-R:** RoHS compliant.