Switch Mode Power Supply DRP024V060W1BA
12/13 Rev: 00,
1/10/2011
Redundancy & Parallel Operation with ORing Diode
See picture below for a typical Redundant/Parallel operation using CliQ II Series Power Supplies.
Power Supply Unit 1 (PSU1) and Power Supply Unit 2 (PSU2) are c onnected through a twin diode
where Anode 1 (A1) is connected to the +Ve of PSU1 and A2 is connected to the +Ve of PSU2 and
both output ground are shorted together.
The output of PSU1 and PSU2 is drawn from the Cathode K of the twin diode, making the Power
Supply work in Redundant/Parallel operation.
Redundant Operation:
When 2 Power Supplies are connected i n parallel, the Power Supply with the higher output voltage
will take the maximum load while the other will operate in standby mode (at no load). In case the
first Power Suppl y fails, the second will take over the load and supplies the required power t o the
end system.