General Description
Critical loads often employ parallel-connected power supplies with redundancy in order to enhance system reliability. The MAX8535/MAX8536/MAX8585 are highly integrated but inexpensive MOSFET controllers that provide isolation and redundant power capability in high-reliability systems. The MAX8535/MAX8585 are used in 12V systems, and have an internal charge pump to drive the gates of the n-channel pass elements to VCC + 10V. The MAX8536 is used in 3.3V and 5V systems, with a charge-pump output of VCC + 5V.

Features
♦ Simple, Integrated, and Inexpensive ORing MOSFET Controller
♦ ORing MOSFET Drive for 12V (MAX8535/MAX8585) and 3.3V or 5V (MAX8536) Bus
♦ Eliminates ORing Diode Power Dissipation and Reverse Leakage Current
♦ Provides N + 1 Redundant Supply Capability for Highly Reliable Systems
♦ Isolates Failed Supply from Output Bus in <1µs
♦ Reverse-Current Flow Detection
♦ Programmable Soft-Start
♦ Logic-Enable Input
♦ Adjustable Overvoltage and Undervoltage Trip Points
♦ Fault-Indicator Output
♦ Space-Saving 8-Pin µMAX Package

Applications
   Silver Box Supplies for Servers
   On-Board Redundant Power Supplies in Blade Servers
   Network/Telecom Power Supplies
   Rectifiers
   Redundant Power Supplies in High-Availability Systems