Multi-phase interleaving isolated DC/DC converter
First Claim
1. A multi-phase interleaving isolated DC/DC converter comprising:
- a transformer, a primary side connected to a power source, and a secondary side connected to an output filter;
said transformer having a primary winding connected to said primary side and a secondary winding connected to said secondary side for converting an input voltage into an output voltage, wherein said primary winding has a plurality of coils and said secondary winding comprises a plurality of coils;
said primary side further has a plurality of primary legs equal to the number of coils in said primary winding, wherein each primary leg has a top switch and a bottom switch, and is connected to said primary winding between said top and bottom switches; and
said secondary side further comprises at least one output filter inductor connected to said secondary winding.
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Abstract
A converter has a transformer with primary and secondary windings each having n coils in a series-series arrangement connected to primary and secondary sides. The primary side has n primary legs each having a top switch and a bottom switch and connected to the primary winding therebetween. The secondary side has n secondary legs, each secondary leg has a synchronous rectifier switch and an output filter inductor connected to the secondary winding therebetween. A complimentary control for the primary side comprising a gate driver transformer with primary winding in series with a DC blocking capacitor connected to a drain and a source of the top switch of each primary leg, and a gate drive transformer, for each primary leg, with secondary winding containing a leakage inductor and in series with a DC blocking capacitor and a damping resistor connected to gate and source of the secondary side synchronous rectifier.
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Citations
29 Claims
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1. A multi-phase interleaving isolated DC/DC converter comprising:
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a transformer, a primary side connected to a power source, and a secondary side connected to an output filter;
said transformer having a primary winding connected to said primary side and a secondary winding connected to said secondary side for converting an input voltage into an output voltage, wherein said primary winding has a plurality of coils and said secondary winding comprises a plurality of coils;
said primary side further has a plurality of primary legs equal to the number of coils in said primary winding, wherein each primary leg has a top switch and a bottom switch, and is connected to said primary winding between said top and bottom switches; and
said secondary side further comprises at least one output filter inductor connected to said secondary winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A multi-phase interleaving isolated DC/DC converter comprising:
a transformer, a primary side connected to a power source, and a secondary side connected to an output filter;
said transformer having a primary winding and a secondary winding for converting an input voltage into an output voltage;
wherein said primary winding and said secondary winding comprises an n winding each winding having n coils;
wherein said primary side has n primary legs wherein each has a top and a bottom switch, and is connected to said primary winding between said top and bottom switches;
wherein said secondary side has n secondary legs connected to said secondary winding; and
further comprises an output filter inductor connected to said secondary winding. - View Dependent Claims (14, 15, 16, 17, 18, 19, 29)
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20. A winding structure for a three-phase high frequency transformer comprising:
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a primary winding and a secondary winding each winding having n coils, wherein each n coil of the primary winding and each n coil of the secondary winding are disposed on each n core, wherein each core is arranged vertically adjacent to one another in a series-series arrangement. - View Dependent Claims (21, 22, 23)
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24. A self-driven scheme for a DC/DC converter, comprising:
a complimentary control a multi-phase isolated DC/DC converter having n primary legs and n secondary legs, wherein said complimentary control for each primary leg comprises a gate driver transformer with winding in series with a DC blocking (level shift) capacitor Cp connected to a drain and a source of a top switch of each primary leg. - View Dependent Claims (25, 26, 27, 28)
Specification