MP5990
Active Part Numbers:
MP5990GMA-0000-Z MP5990GMA-0000-P MP5990GMA-xxxx-Z MP5990GMA-xxxx-P
Meaning of P & Z 
Evaluation Tools
MP5991GLU Evaluation Kit 16V, 50A, 1mΩ RDS(ON), Hot-Swap Intelli-Fuse Solution
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. The device can drive up to 50A of continuous output current (IOUT) per device at room temperature, and up to 60A of continuous IOUT with air flow.
The device limits the backplane voltage drop by limiting the inrush current to the load while a circuit card is inserted into a live backplane power source. It limits the internal MOSFET current (IFET) by controlling the gate voltage (VGATE) via the current limit (ILIMIT) reference input and soft-start (SS) ramp.
The MP5991 provides many features to simplify system design, such as an integrated current mirror to monitor IOUT and the integrated on-die temperature sense. This eliminates the need for an external current-sense power resistor, power MOSFET, and temperature-sense device.
The IC detects the power MOSFET's gate, source, and drain short conditions. It also provides feedback to the hot-swap controller via the fault-reporting output (GOK). The MP5991 can operate in parallel for high-current applications. During start-up, all of the devices in parallel actively share current.
The MP5991 is available in an LGA-32 (5mmx5mm) package.
MP5990 Resources
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FULLY INTEGRATED HOT-SWAP SOLUTION: MP5990The MP5990 is the industry’s first fully integrated, 16V, 50A hot-swap solution with a PMBus interface. It is optimized for applications where protection against hot-plug functions is critical, including servers, PCIe cards, and 5G telecom and networking. The MP5990 integrates a hot-swap controller and power MOSFET with current and temperature sensing, plus an I2C/PMBus interface and a non-volatil...
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ACCURATE CURRENT MEASUREMENT IN MODERN ELECTRONIC CIRCUITSAs power electronic switching techniques advance, there is an increased need to accurately measure current for feedback control and system monitoring. There are several methods to achieve this, with each method having advantages and limitations. This article focuses on current measurement methods that require relatively high accuracy and bandwidth, such as those used to measure current on the inpu...
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HIGHLY INTEGRATED, SCALABLE, CURRENT-SHARING HOT-SWAP SOLUTION FOR 48V DATACENTER APPLICATIONSServers and racks used in datacenters have undergone a considerable increase in power, going from a few hundred watts to multiple kilowatts. The distribution of these higher power levels on multiple servers inevitably generates greater power losses and hinders efficiency. This aspect can be mitigated by transiting from a traditional 12V distribution voltage to 48V. The increase in distribution vo...
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SCALABLE CURRENT-SHARING E-FUSE SOLUTIONIn typical hot-swap or electronic fuse (e-fuse) applications, great care must be taken when selecting the MOSFET to ensure that the safe operating area (SOA) of the device is not exceeded during a soft-start (SS) turn-on. Even if multiple MOSFETs are paralleled, the soft-start condition causes large amounts of thermal stress. Generally, when using discrete MOSFETs in hot-swap and e-fuse applicati...
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