Full wave series resonant type DC to DC power converter with integrated magnetics
First Claim
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1. A series resonant converter comprising:
- a magnetic E-core having a first and a second gapped side legs and a center leg;
at least one primary winding wound about said center leg and connected to a series resonant network;
a secondary winding wound about said center leg;
a first auxiliary winding wound about said first side leg;
a second auxiliary winding wound about said second side leg in reverse magnetic polarity to said first auxiliary winding; and
said first and second auxiliary windings being in series with one another and with at least one of a pair of output terminals of the series resonant converter.
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Abstract
A full wave DC/DC converter magnetically integrates into the transformer assembly the functions of the resonant inductor, magnetizing inductor and the output filter inductor. The primary and the secondary windings are assembled on a gapped center leg of an E-core, while two output filter windings with an equal number of turns are assembled on gapped left and gapped opposed side legs of the E-core. The length of the gaps in the side legs is selected so that the DC current does not saturate the side legs. The two filter windings are connected in series and are oppositely polarized so that the voltages induced in these windings by the primary winding flux cancel each other.
111 Citations
12 Claims
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1. A series resonant converter comprising:
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a magnetic E-core having a first and a second gapped side legs and a center leg; at least one primary winding wound about said center leg and connected to a series resonant network; a secondary winding wound about said center leg; a first auxiliary winding wound about said first side leg; a second auxiliary winding wound about said second side leg in reverse magnetic polarity to said first auxiliary winding; and said first and second auxiliary windings being in series with one another and with at least one of a pair of output terminals of the series resonant converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification