MIC2587-2BM

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Introduction

The MIC2587-2BM is a hot swap controller for over-voltage protection (OVP), under-voltage lockout (UVLO) and inrush current limit (ICL) in applications where high input voltages are present. It is capable of responding to high voltage surges while providing a stable output voltage and current. It is extensively used in a wide range of applications, from automotive to consumer electronics, to name a few.

Application Field

The MIC2587-2BM has been designed for applications that require protection against input voltage overshoot or threshold voltage reach (OTR) during hot swap. It can be used in a variety of applications including automotive, industrial, telecom, and consumer electronics. For example, it can be used to protect automotive electronics from the overshoot experienced during rapid battery insertion, as well as undervoltage conditions due to discharged batteries. In industrial applications such as datacom and telecom systems, the MIC2587-2BM can provide an additional layer of protection from OTR or UVLO conditions caused by sharp changes in system voltages.

In consumer electronics, the MIC2587-2BM can be used to protect against inrush current during system start-up, as well as provide protection from input overshoots during hot swapping. It can also be used in power converters such as DC-DC and AC-DC converters to provide over-voltage protection and hot swap control. Additionally, the MIC2587-2BM can be used in hot swap rectifier modules, bridge rectifiers and auxiliary systems.

Working Principle

The MIC2587-2BM uses advanced MOSFET gate drive control logic to provide protection against input overvoltage (OTR) and undervoltage lockout (UVLO) conditions. When it receives an input voltage that exceeds the pre-set OTR threshold, it immediately shuts off the gate drive of the MOSFET, preventing further voltage increase. The MIC2587-2BM can also be used to limit inrush current by using a burst mode of operation. During burst mode, the MIC2587-2BM will provide a limited gate drive current until the current in the MOSFET reaches a pre-determined peak, after which it will be shut off. This limits the input inrush current while the system is starting up.

In addition, the MIC2587-2BM can be configured to provide either a linear or a burst mode response to any over-voltage or under-voltage condition. When the MIC2587-2BM receives a signal indicating an OTR or UVLO event, it will shut off the gate drive of the MOSFET according to the configuration set by the user. For example, it can be configured to shut off the MOSFET immediately or after a delay time, to provide time for the system to respond before the MOSFET is shut off.

Conclusion

The MIC2587-2BM is an advanced hot swap controller that can provide protection against over-voltage (OTR), under-voltage lockout (UVLO) and inrush current limit (ICL) conditions in applications where high input voltages are present. It has a wide range of applications, from automotive to consumer electronics, and can be configured to provide either a linear or a burst mode response to any OTR or UVLO condition.

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