Explaining redundant power techniques for servers

Keywords: redundant power  field effect transistor  ORing controller 

Redundant power is a critical component in server applications. In the simplest solution, two power supplies can drive a load through diodes to OR their outputs together. Power supplies can either share the load or have one active and the other in standby. A field effect transistor ORing controller is a more practical solution because it avoids the diode voltage drop, power loss and heat dissipation. It enables designers to structure creative, cost-effective solutions for redundant power. Lower operating cost is realised by conservation of critical computer room power and cooling. Load sharing is achieved through careful power bus design.

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