19-3584; Rev 0; 2/05
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ORing MOSFET Controller with Ultra-Fast 200ns Turn-Off
General Description
The MAX5079 ORing MOSFET controller replaces ORing diodes in high-reliability redundant, parallel-connected power supplies.
Despite their low forward-voltage drop, ORing
Schottky diodes cause excessive power dissipation at high currents.
The MAX5079 allows for the use of low-on-resistance n-channel power MOSFETs to replace the
Schottky diodes.
This results in low power dissipation, smaller size, and elimination of heatsinks in high-power applications.
The MAX5079 operates from 2.
75V to 13.
2V and includes a charge pump to drive the high-side n-channel MOSFET.
Operation down to...