The **M2AS1-5412-R2/N** is a specialized power supply module, commonly utilized in industrial computing, servers, and high-availability network equipment. It is typically manufactured by companies like **Etasis** or **Supermicro**. Below is a breakdown of its technical specifications and electronic components. --- ### 1. General Technical Specifications This unit is a Redundant Power Supply (RPS) module designed to provide consistent power even if one module fails in a multi-module system. | Feature | Specification | | :--- | :--- | | **Type** | AC/DC Redundant Power Supply Module | | **Form Factor** | 1U / Proprietary Blade Slot | | **Max Power Output** | 400W - 500W (Varies by revision) | | **Input Voltage** | 100V - 240V AC (Auto-sensing) | | **Output Rails** | +12V, +5V, +3.3V, +5Vsb, -12V | | **Efficiency Rating** | Typically 80 Plus Gold or Silver equivalent | --- ### 2. Key Electronic Internal Components The internal circuitry is divided into several stages to ensure stable power delivery: #### A. Input Stage (EMI Filtering & Rectification) * **Transient Voltage Suppressors (TVS):** Protects the unit from power surges. * **Bridge Rectifier:** Converts AC input into high-voltage DC. * **EMI/RFI Filter:** Uses X and Y capacitors and common-mode chokes to prevent electrical noise from leaking back into the mains. #### B. Active PFC (Power Factor Correction) * **PFC Controller:** An IC that aligns current consumption with voltage phase to increase efficiency. * **Power MOSFETs:** High-speed switches used to boost voltage to approximately 380V-400V DC. #### C. DC-DC Conversion Stage * **Main Transformer:** Uses high-frequency ferrite cores to step down high-voltage DC to the required secondary voltages. * **Schottky Diodes/Synchronous Rectifiers:** Used on the low-voltage side to minimize energy loss during rectification. #### D. Protection & Management * **Supervisory IC:** Monitored via the **I2C/PMBus** interface. It tracks: * **OVP/UVP:** Over/Under Voltage Protection. * **OCP:** Over Current Protection. * **OTP:** Over Temperature Protection. * **Hot-Swap Controller:** Includes a specialized connector (gold finger) that allows the module to be inserted or removed while the system is running without causing an electrical arc. --- ### 3. Pinout and Interface The **R2/N** designation often refers to specific revisions of the rear gold-finger connector. These connectors carry: 1. **Main Power:** Large pads for +12V and Ground. 2. **Signal Pins:** * `PS_ON`: Signals the unit to wake up. * `PW_OK`: Confirms voltages are within tolerance. * `SCL/SDA`: Data lines for digital monitoring (Temperature, Fan Speed). ---