The **M2PHS2W-154-R2** is a specific technical part number typically associated with high-density power supply units (PSU) or power distribution components used in server infrastructure, specifically within the **Inspur** or similar enterprise hardware ecosystems. Below is a breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications This unit is generally a **1550W Platinum-grade AC/DC Power Supply Module**. It is designed for hot-swappable use in server chassis. | Feature | Specification | | :--- | :--- | | **Model Number** | M2PHS2W-154-R2 | | **Max Output Power** | 1550 Watts | | **Efficiency Rating** | 80 PLUS Platinum | | **Input Voltage** | 100-240V AC / 240V DC | | **Output Voltage** | +12V Main, +12Vsb Standby | | **Cooling** | Internal high-speed fan (front-to-back airflow) | --- ### 2. Key Electronic Components The internal architecture of this PSU utilizes advanced power electronics to achieve high efficiency and power density: * **PFC Stage (Power Factor Correction):** Uses Active PFC circuits to ensure the power factor stays above 0.95, reducing reactive power loss. * **Synchronous Rectification:** Instead of standard diodes, MOSFETs are used on the secondary side to minimize voltage drops and heat generation. * **Digital Control (DSP):** Incorporates a Digital Signal Processor to manage load balancing, thermal throttling, and real-time monitoring via the PMBus protocol. * **Protection Circuits:** * **OVP/UVP:** Over/Under Voltage Protection. * **OCP:** Over Current Protection. * **OTP:** Over Temperature Protection. * **SCP:** Short Circuit Protection. --- ### 3. Connector and Pinout Interface The unit uses a standard "Gold Finger" edge connector typical of CRPS (Common Redundant Power Supply) standards. | Pin Type | Function | | :--- | :--- | | **Power Blades** | Delivery of +12V high current to the motherboard/backplane. | | **Signal Pins** | PMBus (SCL, SDA), PS_ON (Remote turn-on), PS_Kill, and Alert signals. | | **Standby Pins** | Provides low-wattage power even when the main system is powered down. | --- ### 4. Usage Context This specific part number is frequently found in **Inspur NF5280M5** or **NF5468M5** servers. The "R2" suffix often denotes a hardware revision that improves thermal performance or firmware compatibility over previous versions.