The **CPL2-5-50TR-R** is a high-frequency, high-current **Power Inductor** (specifically a coupled inductor) manufactured by **Eaton (formerly Coiltronics/Bussmann)**. It belongs to the **CPL (Coupled Inductor)** series, which is designed primarily for multi-phase voltage regulator modules (VRMs). --- ## 1. Key Technical Specifications | Parameter | Value / Description | | :--- | :--- | | **Inductance** | 50 nH (Nanohenries) | | **Rated Current ($I_{sat}$)** | ~50A to 80A (depending on phase configuration) | | **DC Resistance (DCR)** | Extremely Low (typically < 0.5 mΩ) | | **Number of Windings** | 2 (Coupled) | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Package / Case** | 12.0mm x 5.0mm x 5.0mm (approximate) | --- ## 2. Structural Features The CPL2 series is unique because it integrates multiple inductors into a single magnetic core. * **Coupled Design:** Unlike standard inductors, these feature two or more windings that share the same magnetic flux path. This allows for "current canceling" effects which reduce ripple current. * **Ferrite Core:** Uses a high-frequency ferrite material that minimizes core losses at switching frequencies often exceeding 1 MHz. * **Low Profile:** Designed with a small footprint to fit near high-performance CPUs and GPUs. --- ## 3. Applications The CPL2-5-50TR-R is specifically engineered for high-density power conversion: 1. **Multi-phase VRMs:** Used to power high-end processors (CPUs) and graphics chips (GPUs) in servers and workstations. 2. **Point of Load (POL) Converters:** High-efficiency power delivery in telecommunications equipment. 3. **Data Centers:** Critical components in power modules where space is limited and current requirements are extremely high. --- ## 4. Advantages of "Coupled" Inductors Using the CPL2-5-50TR-R instead of two discrete inductors provides several benefits: * **Phase Interleaving:** Improves the transient response of the power supply. * **Efficiency:** Reduces the peak current in the switches, leading to lower heat generation. * **Space Saving:** Consolidates two components into one physical package. ---