The **MPT750-R82H1** is a high-performance, industrial-grade power supply unit (PSU) typically used in server environments, telecommunications, and high-end networking hardware. It is often associated with manufacturers like *Chicony Power Technology*. --- ### Technical Specifications Overview | Parameter | Specification Details | | :--- | :--- | | **Model Number** | MPT750-R82H1 | | **Form Factor** | Redundant / Slim Power Module | | **Total Power Output** | 750 Watts | | **Efficiency Rating** | 80 PLUS Platinum (typically >94% efficiency) | | **Input Voltage** | 100-240V AC (Auto-ranging) | | **Output Rails** | Primarily +12V and +12Vsb (Standby) | --- ### Key Electronic Components & Features #### 1. Power Factor Correction (PFC) This unit utilizes **Active PFC** circuitry. This ensures that the power supply operates at a high power factor (usually >0.95), reducing electrical waste and harmonic distortion in the power grid. #### 2. Redundancy Logic The "R" in the model name often signifies its role in a **Redundant Power System**. It features internal ORing FETs (Field-Effect Transistors) that allow multiple modules to work in parallel. If one unit fails, the other takes over instantly without system downtime. #### 3. Protection Circuitry To protect sensitive server motherboards, the MPT750 includes several hardware protection layers: * **OVP (Over Voltage Protection):** Shuts down if voltage exceeds safe limits. * **OCP (Over Current Protection):** Prevents damage from current spikes. * **OTP (Over Temperature Protection):** Monitors internal thermistors to prevent thermal runaway. * **SCP (Short Circuit Protection):** Immediate cutoff in case of a direct short. #### 4. Communication Interface (PMBus) The unit typically features an **I2C/PMBus 1.2 interface**. This allows the system's management controller (BMC) to monitor: * Real-time power consumption. * Fan speed and thermal status. * Input/Output voltage levels. --- ### Connector and Physical Design The MPT750-R82H1 uses a **Golden Finger** (edge connector) design rather than standard cable harnesses. This allows it to be hot-swapped into a power distribution board (PDB) backplane. ```text Typical Pinout Structure: - Power Pins: High-current blades for +12V and Ground. - Signal Pins: Smaller pins for PS_ON, PW_OK, I2C Data/Clock, and Address. ``` ---