Balancing current drawn from multiple power supply inputs using multiple-input inductors
First Claim
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1. A power supply circuit comprising:
- multiple power supply inputs including first and second power supply inputs for respectively receiving first and second input voltages,multiple switching regulators associated with the respective power supply inputs, anda first multiple-input inductor coupled between the power supply inputs and the switching regulators for balancing voltages applied to each of the switching regulators, the first multiple-input inductor having first and second windings respectively connected to the first and second power supply inputs for respectively receiving the first and second input voltages, so as to provide respective voltages of opposite polarities across the first and second windings.
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Abstract
Novel techniques for balancing current drawn from multiple power supply inputs. A multiple-input inductor is coupled between the power supply inputs and the switching circuits associated with the respective power supply inputs for balancing voltages applied to each of the switching circuits.
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Citations
19 Claims
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1. A power supply circuit comprising:
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multiple power supply inputs including first and second power supply inputs for respectively receiving first and second input voltages, multiple switching regulators associated with the respective power supply inputs, and a first multiple-input inductor coupled between the power supply inputs and the switching regulators for balancing voltages applied to each of the switching regulators, the first multiple-input inductor having first and second windings respectively connected to the first and second power supply inputs for respectively receiving the first and second input voltages, so as to provide respective voltages of opposite polarities across the first and second windings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of balancing current drawn from multiple power supply inputs including first and second power supply inputs for respectively receiving first and second input voltages, comprising the steps of:
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converting voltages supplied from the power supply inputs using respective switching regulators, and balancing voltages applied to the switching regulators from the power supply inputs using a multiple-input inductor having first and second windings respectively connected to the first and second power supply inputs for respectively receiving the first and second input voltages, so as to provide respective voltages of opposite polarities across the first and second windings.
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Specification