Hot-Swap Protection Device Use Case: Servers and Datacenters

USE CASE

Tweet this article

Share this article

Share this article

Get valuable resources straight to your inbox - sent out once per month

Subscribe

We value your privacy

This use case considers the application of the MP5990 for servers and datacenters.

The MP5990 is designed to work as a hot-swap protection device in conjunction with the multi-phase MP5991 for applications requiring above 50A of output current.

As datacenters become more central for vehicle transportation and artificial intelligence, optimizing safety during maintenance – while allowing them to continue running – is all the more essential for their use. Doing so means being able to replace or add components to these applications without having to stop, shut down, or reboot the system.

The MP5990 is a hot-swap protection device designed to protect the safe operating area (SOA) of high-current end applications like servers and datacenters. It is an integrated e-fuse with a digital interface and can achieve up to 50A of continuous output current (I_OUT) per device at room temperature.

The MP5990’s high current capacity makes it suitable for applications such as servers and communications equipment, which may require built-in protection against over-current (OC) conditions, over-voltage (OV) conditions, or surges. The digital interface allows the MP5990 to read current, voltage, temperature data, and input power from the internal analog-to-digital converter (ADC).

Furthermore, the MP5990 raises V_OUT slowly to limit the inrush current, thereby suppressing the output voltage overshoot and the input voltage drop. For servers and datacenter applications, the MP5990 can ensure that any hot plug requests (e.g. online power expansion or sub-card repair/replacement) can be completed smoothly while protecting the live backplane power source.

The MP5990 is designed to work as a hot-swap protection device in conjunction with the multi-phase MP5991 for applications requiring above 50A of output current. The MP5991 is an integrated, monolithic controller and switch with a power MOSFET and other circuitry that allows it to operate alone or to be controlled via a hot-swap controller. Based on the MP5990’s integrated controller and MOSFET driver, the MP5991 operates as a slave device that receives control inputs from the MP5990.

The MP5990 provides flexible design flexibility, with a wide range of register configuration options. It has a configurable power sequence timer and a broad range of system status indication signals. The hot-swap protection device also has several fault protections, including input voltage (V_IN) over-voltage protection (OVP), I_OUT over-current protection (OCP), short-circuit protection (SCP), and over-temperature protection (OTP).

Additional features of the MP5990 include:

• 4V to 16V Operating Input Voltage (V_IN) Range
• Supports Up to 60A of I_OUT with Airflow
• 1mΩ On Resistance (R_DS(ON)) Integrated Power MOSFET
• Digital Interface/I²C 1.3 Compatible
• ±1% IMON Reporting Accuracy
• Integrated Current Sense (CS) with Sense Output
• Configurable Over-Current (OC) Limit
• Configurable Short-Circuit Current Limit
• Built-In Insertion Delay
• Configurable Soft Start (SS)
• Built-In Fuse Health Reporting
• Fault Signal Output (GOK)
• Power Good (PG) Indication
• VIN Under-Voltage Warning (UVW)
• Fault Type Indication (FLT_TYPE)
• Faults Auto-Record to the Non-Volatile Memory (NVM)
• V_IN Over-Voltage Protection (OVP), Short-Circuit Protection (SCP), Over-Current Protection (OCP), and Over-Temperature Protection (OTP) with Options for No Action, Latch, Retry, or Hiccup Mode
• Intelli-Fuse Junction Temperature (T_J) Monitoring
• Intelli-Fuse Controller
• Built-In Non-Volatile Memory (NVM) to Store Custom Configurations
• High-Precision Input Energy (E_IN), Input Power (P_IN), Output Power (P_OUT), and I_OUT Reporting
• Configurable TON_DELAY and TOFF_DELAY
• NVM Write Protection
• Available in an LGA-45 (5mmx7mm) Package

For more information, explore MPS's datacenter solutions.