The **M2AS1-6434-R/CE** is a specialized high-performance computing component, primarily categorized as a **VITA 62 compliant power supply module**. These modules are designed for use in OpenVPX systems, often found in aerospace, defense, and rugged industrial applications. --- ## 1. Core Specifications and Type This part is a 3U VPX power supply. It is engineered to convert aircraft or vehicle input power into the specific voltages required by backplane-mounted processing boards. ### Technical Parameters | Feature | Specification (Typical) | | :--- | :--- | | **Form Factor** | 3U VPX (VITA 62) | | **Input Voltage** | 28V DC (Standard Military/Aerospace range) | | **Output Power** | 400W - 600W (Configuration dependent) | | **Cooling** | Conduction Cooled | | **Efficiency** | >85% - 90% | | **Standard Compliance** | MIL-STD-704, MIL-STD-461, MIL-STD-810 | --- ## 2. Key Electronic Components The internal architecture of the M2AS1-6434-R/CE consists of several critical subsystems: ### A. Power Conversion Stage * **DC-DC Converters:** High-frequency switching regulators that step down the 28V input to various rails (typically 12V, 5V, and 3.3V). * **Synchronous Rectification:** Used to minimize power loss and heat generation, which is critical for conduction-cooled units. ### B. EMI and Filtering * **Input Filter:** Contains inductors and capacitors designed to meet **MIL-STD-461** requirements, preventing electromagnetic interference from leaking back into the platform's power grid. * **Transient Voltage Suppressors (TVS):** Protects the internal circuitry from high-voltage spikes common in military vehicle environments. ### C. Monitoring and Control (Smart Features) * **VITA 46.11 Management:** Includes an integrated IPMC (Intelligent Platform Management Controller) for system health monitoring via I2C/SMBus. * **Protective Circuits:** * **OCP:** Over-Current Protection. * **OVP:** Over-Voltage Protection. * **OTP:** Over-Temperature Protection (Thermal shutdown). --- ## 3. Application Environment The suffix **-R/CE** often denotes specific ruggedization or certification levels: * **Ruggedization:** Designed for high shock and vibration resistance. * **Conduction Cooling:** Uses a thermal plate to transfer heat to the chassis rather than using fans. --- ## 4. Pinout Logic (VITA 62 Standard) The connector on the rear of the module follows the VITA 62 standard, which organizes pins into: 1. **Power Input:** High-current pins for the 28V DC source. 2. **Power Output:** High-current pins for the VS1 (12V), VS2 (3.3V), and VS3 (5V) rails. 3. **Signals:** Low-current pins for `ENABLE*`, `INHIBIT*`, and the `I2C` management bus.