High availability DC power supply with isolated inputs, diode-or-connected outputs, and power factor correction
First Claim
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1. 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; and
a power factor correction system coupled to the first feedback control loop.
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Abstract
A high availability DC power supply with isolated inputs. The high availability power supply includes a first diode having a first diode output and a second diode having a second diode output. A first isolated direct current power supply is coupled to the first diode. An output power bus defined by the first diode output coupled to the second diode output is provided. 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.
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Citations
11 Claims
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1. A high availability power supply comprising:
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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; and
a power factor correction system coupled to the first feedback control loop. - View Dependent Claims (2, 3, 4, 5)
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6. A high availability power supply comprising:
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a first diode having a first diode input and a first diode output;
a second diode having a second diode input and a second diode output;
a first isolated direct current power supply including a first isolating transformer directly coupled to the first diode input, wherein the first isolating transformer is an isolating flyback transformer;
a second isolated direct current power supply including a second isolating transformer directly coupled to the second diode input; and
an output power bus defined by the first diode output coupled to the second diode output, wherein the output power bus maintains its availability 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 voltage regulation control system;
a first feedback control loop coupled to the voltage regulation control system; and
a power factor correction system coupled to the first isolated direct current power supply. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification