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US 6,294,848 B1Granted
Distributed power supply for hot swappable backplane
AssigneeSprint Communications Company L.P.
InventorEarl Goodrich, II
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AssigneeSprint Communications Company L.P.
InventorEarl Goodrich, II
Estimating the term…
The present invention discloses a power distribution system for circuit boards connected to a backplane in a customer premises telecommunications hub. Each functional board in the system contains its own DC to DC converter for receiving a first DC supply voltage from the backplane and supplying a lower voltage to the circuits on the board. The converter is of the single ended primary inductance converter type having its inductance element positioned between the power switching device and the input power capacitor. The power converter is connected to the main power supply through two pins of a staged or staggered connector on the board. A resistor is connected between the earlier of the two pins to make contact with the main supply. Due to the small size of the input resistor required for the converter, the input capacitor can almost fully charge before the second pin, which connects directly to the converter input, makes contact.
A power distribution system for supplying power to circuit boards connected to a backplane in a customer premises telecommunications hub comprising:
A power converter on a hot swappable circuit board to be plugged into a backplane socket providing a first DC voltage in a customer premises telecommunications hub comprising:
A circuit board carrying functional circuits for a customer premises telecommunications hub, said hub having a backplane connector for receiving said circuit board and providing a connection to a first DC voltage, said circuit board including a power converter comprising:
A power conversion system for hot swappable circuitry comprising:
Dependencies are inferred from the claim text.