Patent ID: 6278624
Filing Date: 2001-08-21
Classification: H02J,H02M

Abstract:
A high availability power supply comprising:a first diode having a first diode output;a second diode having a second diode output;a first isolated direct current power supply coupled to the first diode, the first isolated direct current power supply including a first isolating transformer which is an isolating flyback transformer directly coupled to the first diode;a second isolated direct current power supply coupled to the second diode, the second isolated direct current power supply including a second isolating transformer directly coupled to the second diode;an output power bus defined by the first diode output coupled to the second diode output, wherein the output power bus is still available to supply power upon the loss of the first isolated direct current power supply or the loss of the second isolated direct current power supply;a first feedback control loop coupled to the first isolated direct current power supply and a second feedback control loop coupled to the second isolated direct current power supply for maintaining a desired voltage at the output power bus; anda power factor correction system coupled to the first feedback control loop.