Synchronized switched mode power supplies

Details Synchronized switched mode power supplies Synchronized switched mode power supplies

1986-06-13

1991-09-03

Deboer, Todd E.

Electrical transmission or interconnection systems

Plural load circuit systems

Plural sources of supply

307 32, 307 41, 363 26, 363 41, H02M 700

Patent

active

050457128

ABSTRACT:
This invention reduces the ripple component of current in the alternating current to, or direct current from, a common power source providing direct current power to a plurality of switched dc/dc power supplies by controlling the time of occurrence of switching of each of the supplies. Each dc/dc power supply is controlled by a switch pulse from a switching circuit which determines the occurrence and duration of time during which each power supply is switched "on". The time of occurence of the switch pulse of each switching circuit is determined by the application of an individual synchronizing pulse to each switching circuit. The combined effect of the ripple components of currents provided to the switched power supplies is minimized by summing these currents with appropriately phased synchronizing pulses applied to the switching circuits.

REFERENCES:
patent: 4016474 (1977-04-01), Mason
patent: 4034232 (1977-07-01), La Venture
patent: 4163906 (1979-08-01), Shimamura
patent: 4339697 (1982-07-01), Franz
patent: 4344124 (1982-08-01), Panicali
patent: 4521745 (1989-06-01), Falconer

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