Dynamic current sharing dc-dc switching power supply
AssigneeThe Board of Trustees of the University of Illinois
InventorPhilip T. Krein
Life of this patent
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Abstract
A power supply in an embodiment of the invention includes a plurality of dc—dc switching power converters, each of which has its input isolated from its output. The power converters are arranged with their respective inputs being series connected and their respective outputs being parallel connected in an embodiment of the invention. In another embodiment of the inputs are parallel connected and the outputs series connected. Each power converter includes an input filter in each of said dc—dc switching power converters and an output filter. Each power converter includes a sensorless current mode control circuit controlling its switching duty ratio.
Claims27
A dc switching power supply, comprising:
- a plurality of dc—dc switching power converters, each of said dc—dc switching power converters having its input isolated or switchably isolated from its output;
- said dc—dc switching power converters being arranged with their respective inputs being series connected and their respective outputs being parallel connected;
- an input filter in each of said dc—dc switching power converters;
- an output filter in each of said dc—dc switching power converters;
- a sensorless current mode control circuit in each of said dc—dc switching power converters controlling the switching duty ratio in each of said dc—dc switching power converters, each sensorless current mode control circuit using reference input and output voltages to control switching timing.
A dc switching power supply, comprising:
- a plurality of dc—dc switching power converters, each of said dc—dc switching power converters having its input isolated or switchably isolated from its output;
- said dc—dc switching power converters being arranged with their respective inputs being parallel connected and their respective outputs being series connected;
- an input filter in each of said dc—dc switching power converters;
- an output filter in each of said dc—dc switching power converters;
- a sensorless current mode control circuit in each of said dc—dc switching power converters controlling the switching duty ratio in each of said dc—dc switching power converters, each sensorless current mode control circuit using reference input and output voltages to control switching timing.
Dependencies are inferred from the claim text.