Methods and apparatus for synchronizing a plurality of power sup

Details Methods and apparatus for synchronizing a plurality of power sup Methods and apparatus for synchronizing a plurality of power sup

1998-09-30

2000-10-17

Riley, Shawn

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323284, 323271, G05F 1573

Patent

active

06133717&

ABSTRACT:
A technique involves broadcasting a pulse signal to synchronize oscillating signals used by multiple power supplies to provide output voltages. The technique involves charging and discharging respective capacitors of the multiple power supplies at respective rates to provide the oscillating signals. Each of the respective capacitors is charged until a voltage across that capacitor reaches a respective upper threshold and subsequently discharged until the voltage across that capacitor reaches a respective lower threshold. The technique further involves broadcasting, from at least two of the power supplies, a pulse signal to a synchronization connection coupled to each of the respective capacitors to modify the respective rates for charging and discharging the respective capacitors based on the pulse signal such that oscillating signals become synchronized.

REFERENCES:
patent: 5001620 (1991-03-01), Smith
patent: 5615097 (1997-03-01), Cross
"Product & Applications Handbook 1996-96," Unitrode Integrated Circuits Corporation, Merrimack, NH, pp. 6-158 to 6-165, Jan. 1995.

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