Phase control device for DC/DC converter
First Claim
1. A phase control device for use with a voltage-boosting DC/DC converter including a low-voltage-side port and a high-voltage-side port, the DC/DC converter further including a transformer of a magnetic-field cancellation type having a primary winding and secondary winding interconnected in an oppositely-wound configuration with a common terminal of the primary winding and secondary winding being connected to a positive-pole terminal of the low-voltage-side port, first switching means for controlling an energizing current of the primary winding which flows to a common reference terminal, and second switching means for controlling an energizing current of the secondary winding which flows to the common reference terminal, the phase control device comprising:
- current detecting means for detecting a current flowing through at least one of the primary and secondary windings;
determining means for, on the basis of a current signal detected by the current detecting means, determining an amount of current ripple occurring when the first switching means or the second switching means switches to an ON state; and
phase regulating means for, on the basis of the amount of current ripple determined by the determining means, regulating a phase related to an ON time of each of the first and second switching means such that the amount of current ripple is reduced to zero.
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Accused Products
Abstract
A phase control device for use with a voltage-boosting DC/DC converter includes a current sensor for detecting a current flowing through at least one of the primary and secondary windings of a transformer of the DC/DC converter, a ripple determining section for, on the basis of a current signal detected by the current sensor, determining an amount of current ripple occurring when a first switching element or second switching element switches to an ON state, and a phase regulating section for, on the basis of the amount of current ripple determined by the ripple determining section, regulating a phase related to an ON time of each of the first and second switching elements such that the amount of current ripple is reduced to zero.
21 Citations
20 Claims
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1. A phase control device for use with a voltage-boosting DC/DC converter including a low-voltage-side port and a high-voltage-side port, the DC/DC converter further including a transformer of a magnetic-field cancellation type having a primary winding and secondary winding interconnected in an oppositely-wound configuration with a common terminal of the primary winding and secondary winding being connected to a positive-pole terminal of the low-voltage-side port, first switching means for controlling an energizing current of the primary winding which flows to a common reference terminal, and second switching means for controlling an energizing current of the secondary winding which flows to the common reference terminal, the phase control device comprising:
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current detecting means for detecting a current flowing through at least one of the primary and secondary windings; determining means for, on the basis of a current signal detected by the current detecting means, determining an amount of current ripple occurring when the first switching means or the second switching means switches to an ON state; and phase regulating means for, on the basis of the amount of current ripple determined by the determining means, regulating a phase related to an ON time of each of the first and second switching means such that the amount of current ripple is reduced to zero. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A program embodied in a computer readable medium for use in phase control of a voltage-boosting DC/DC converter including a low-voltage-side port and a high-voltage-side port, the DC/DC converter further including a transformer of a magnetic-field cancellation type having a primary winding and secondary winding interconnected in an oppositely-wound configuration with a common terminal of the primary winding and secondary winding being connected to a positive-pole terminal of the low-voltage-side port, first switching means for controlling an energizing current of the primary winding which flows to a common reference terminal, second switching means for controlling an energizing current of the secondary winding which flows to the common reference terminal, the program comprising, and current detecting means for detecting a current flowing through at least one of the primary and secondary windings, the program comprising:
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a determining function to, on the basis of a current signal detected by the current detecting means, determine an amount of current ripple occurring when the first switching means or the second switching means switches to an ON state; and a phase regulating function to, on the basis of the amount of current ripple determined by the determining function, regulating a phase related to an ON time of each of the first and second switching means such that the amount of current ripple is reduced to zero.
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Specification