Dual Feed Active-ORing Programmable Hot Swap Controller

Dual Feed Active-ORing Programmable Hot Swap Controller,The SMH4814 is an integrated power controller designed to control the hot-swapping of plug-in cards in a distributed power environment. The SMH4814 drives external Power MOSFET switches that connect the supply to the load while reducing in-rush current and providing over-current protection. When the source and drain voltages of the external MOSFETs are within specification the SMH4814 asserts the four PUP Logic outputs in a programmable cascade sequence to enable the DC/DC converters. The SMH4814 also monitors two independent 48V feeds. The redundant power supplies allow for high availability and reliability. The traditional method of supplying power from these feeds is via ORing power Diodes which consume a significant amount of power. The SMH4814 allows low-RDSON FETs to be used in place of ORing Diodes to reduce power consumption. The SMH4814 determines when at least one of the 48V feeds is within an acceptable voltage range and switches on the appropriate FET path while providing slew rate control. The SMH4814 continuously monitors the incoming feeds and switches to the most negative feed as necessary. The SMH4814 is programmed and controlled using the I 2 C bus as required in ATCATM By SUMMIT Microelectronics, Inc:
SMH4814 's PackagesSMH4814 's pdf datasheet

SMH4814 Pinout, Pinouts
SMH4814 pinout,Pin out
This is one package pinout of SMH4814,If you need more pinouts please download SMH4814's pdf datasheet.

SMH4814 Application circuits
SMH4814 circuits
This is one application circuit of SMH4814,If you need more circuits,please download SMH4814's pdf datasheet.

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