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ISL6144

Renesas
Part Number ISL6144
Manufacturer Renesas
Description High Voltage ORing MOSFET Controller
Published Jun 17, 2019
Detailed Description ISL6144 High Voltage ORing MOSFET Controller The ISL6144 ORing MOSFET Controller and a suitably sized N-Channel power MO...
Datasheet PDF File ISL6144 PDF File

ISL6144
ISL6144


Overview
ISL6144 High Voltage ORing MOSFET Controller The ISL6144 ORing MOSFET Controller and a suitably sized N-Channel power MOSFET(s) increases power distribution efficiency and availability when replacing a power ORing diode in high current applications.
In a multiple supply, fault tolerant, redundant power distribution system, paralleled similar power supplies contribute equally to the load current through various power sharing schemes.
Regardless of the scheme, a common design practice is to include discrete ORing power diodes to protect against reverse current flow should one of the power supplies develop a catastrophic output short to ground.
In addition, reverse current can occur if the current sharing scheme fails and an individual power supply voltage falls significantly below the others.
Although the discrete ORing diode solution has been used for some time and is inexpensive to implement, it has some drawbacks.
The primary downside is the increased power dissipation loss in the ORi...


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