The **VP2-0116-R** is a high-performance power inductor, part of the **Versa-Pac®** series manufactured by Eaton (formerly Bussmann/Coiltronics). These components are unique because they feature multiple tightly coupled windings, allowing them to be configured in various ways. --- ### 1. Key Technical Specifications The "VP2" designation refers to the size and power rating within the family, while "0116" relates to the inductance and "R" denotes RoHS compliance. | Parameter | Specification (Typical) | | :--- | :--- | | **Inductance (Parallel)** | ~6.7 µH (Typical) | | **Inductance (Series)** | ~107.2 µH (Typical) | | **Peak Current ($I_{sat}$)** | ~1.6A - 6.4A (Configuration dependent) | | **DC Resistance (DCR)** | ~0.024 Ω per winding | | **Number of Windings** | 6 independent windings | | **Operating Temperature** | -40°C to +125°C | | **Package Style** | Surface Mount (SMT) | --- ### 2. Physical Construction and Features The VP2-0116-R is built using a **toroidal core** geometry which offers several electronic advantages: * **Low Magnetic Leakage:** The toroidal shape keeps the magnetic field contained, reducing Electromagnetic Interference (EMI) with surrounding components. * **High Efficiency:** The design minimizes core losses, making it suitable for high-frequency switching regulators. * **Versatility:** With 6 separate windings, a single part can be used as an inductor, a 1:1 transformer, or a multi-tap autotransformer. --- ### 3. Common Circuit Applications Because of its multi-winding nature, the VP2-0116-R is used in several specific power electronic roles: #### A. Buck/Boost Converters By connecting windings in series or parallel, engineers can fine-tune the inductance and current-carrying capacity to meet specific DC-DC conversion requirements. #### B. SEPIC and Cuk Converters These topologies require coupled inductors. The VP2 series is ideal here because the multiple windings share the same core, providing the necessary magnetic coupling in a single package. #### C. Isolation Transformers It can act as a 1:1 or 1:N transformer for low-power signal or gate drive isolation, provided the voltage levels remain within the insulation limits of the wire coating. --- ### 4. Configuration Diagram (Example) ```text Winding 1: [1]--[ ]--[12] Winding 2: [2]--[ ]--[11] Winding 3: [3]--[ ]--[10] Winding 4: [4]--[ ]--[9] Winding 5: [5]--[ ]--[8] Winding 6: [6]--[ ]--[7] ``` *Note: Terminals are paired. Connecting 1-2-3 and 12-11-10 puts windings in parallel to increase current capacity.*