The **MI-RJ2L-IA** is a high-reliability, military-grade DC-DC converter module manufactured by **Vicor Corporation**. It belongs to the **MI-200** family of power components designed specifically for defense and aerospace applications. --- ### 1. Technical Specifications The MI-RJ2L-IA is a "Half-VI-200" size module (often referred to as a Junior size) that converts high-voltage DC input into a regulated low-voltage output. | Feature | Specification | | :--- | :--- | | **Input Voltage Range** | 270V DC (Nominal) | | **Output Voltage** | 28V DC | | **Output Power** | 25W - 50W (Standard 25W for J-size) | | **Product Grade** | I-Grade (Military/Industrial) | | **Operating Temp Range** | -40°C to +85°C | | **Storage Temp Range** | -55°C to +100°C | --- ### 2. Breakdown of the Model Number The alphanumeric code provides specific details about the component's internal architecture: * **MI**: Military Grade series. * **R**: Input voltage designator (typically 270V DC input). * **J**: "Junior" size module (approx. 2.28" x 2.4" x 0.5"). * **2**: Output Voltage designator (28V output). * **L**: Power Level/Output Power (typically 25 Watts). * **IA**: Product grade and specialized configuration (I = -40°C to +85°C, A = Standard finish). --- ### 3. Key Internal Features These modules use Vicor's proprietary Zero-Current Switching (ZCS) and Zero-Voltage Switching (ZVS) topologies. * **High Efficiency:** High-frequency switching minimizes heat loss and reduces the size of internal magnetic components. * **Isolation:** Galvanic isolation between input and output, protecting sensitive loads from high-voltage spikes on the input bus. * **Low Noise:** Designed to meet strict EMI/RFI requirements common in military avionics. * **Encapsulation:** The internal circuitry is fully potted (encapsulated) to resist vibration, shock, and humidity. --- ### 4. Common Applications The MI-RJ2L-IA is typically found in environments where standard commercial power supplies would fail: 1. **Avionics:** Powering flight control systems or cockpit displays. 2. **Radar Systems:** Low-noise power for signal processing units. 3. **Shipboard Electronics:** Handling the harsh power fluctuations of naval 270V DC buses. 4. **Ground Vehicles:** Ruggedized computing and communication equipment. ---