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US 12,633,836 B2Granted
Power conversion phases and coupling inductance
AssigneeInfineon Technologies Austria AG
InventorsMario Ursino, Roberto Rizzolatti
Life of this patent
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Abstract
An apparatus such as a power converter includes: a first capacitor; a second capacitor; a network of switches operative to control generation of an output voltage via: i) resonance of the first capacitor and a first transformer winding supplying first current to an output node of the power converter, and ii) resonance of the second capacitor and a second transformer winding supplying second current to an output node of the power converter. The first current may be substantially equal to the second current. The power converter may include additional windings in which other currents are substantially equal.
Claims21
A power converter comprising:
- a first capacitor;
- a second capacitor;
- a network of switches operative to control generation of an output voltage via:
- i) resonance of the first capacitor and a first transformer winding operative to supply a first current to an output node of the power converter, and ii) resonance of the second capacitor and a second transformer winding operative to supply a second current to the output node of the power converter;
- and
- the first current being substantially equal to the second current;
- the power converter further comprising:
- a third transformer winding and a fourth transformer winding:
- wherein the network of switches is further operative to control the generation of the output voltage via:
- i) resonance of the second capacitor and the third transformer winding supplying a third current to the output node of the power converter, and ii) resonance of the first capacitor and the fourth transformer winding supplying a fourth current to the output node of the power converter;
- and
- wherein the fourth current is substantially equal to the third current.
9 more elements
A power converter comprising:
- a first capacitor:
- a second capacitor:
- a network of switches operative to control generation of an output voltage via:
- i) resonance of the first capacitor and a first transformer winding operative to supply a first current to an output node of the power converter, and ii) resonance of the second capacitor and a second transformer winding operative to supply a second current to the output node of the power converter;
- and
- the first current being substantially equal to the second current;
- the power converter further comprising:
- a third transformer winding;
- a fourth transformer winding;
- a first transformer assembly including the first transformer winding magnetically coupled to the third transformer winding;
- a second transformer assembly including the second transformer winding magnetically coupled to the fourth transformer winding;
- and
- a controller operative to control switching of the network of switches between a first mode and a second mode for each respective control cycle of multiple control cycles of converting an input voltage into the output voltage at the output node;
- wherein the network of switches is further operative to control generation of the output voltage via the first mode, the first mode including:
- i) charging of the first capacitor during resonance of the first capacitor and the first transformer winding supplying the first current to the output node of the power converter for a first portion of a respective control cycle, and ii) discharging of the second capacitor during resonance of the second capacitor and the second transformer winding supplying the second current to the output node of the power converter for the first portion of the respective control cycle;
- and
- wherein the network of switches is further operative to control generation of the output voltage via the second mode, the second mode including:
- i) charging of the second capacitor during resonance of the second capacitor and the third transformer winding for a second portion of the respective control cycle, the third transformer winding supplying third current to the output node of the power converter, and ii) discharging of the first capacitor during resonance of the first capacitor and the fourth transformer winding for the second portion of the respective control cycle, the fourth transformer winding supplying fourth current to the output node of the power converter.
15 more elements
A power converter comprising:
- a first capacitor:
- a second capacitor:
- a network of switches operative to control generation of an output voltage via:
- i) resonance of the first capacitor and a first transformer winding operative to supply a first current to an output node of the power converter, and ii) resonance of the second capacitor and a second transformer winding operative to supply a second current to the output node of the power converter;
- and
- the first current being substantially equal to the second current;
- the power converter further comprising:
- a third transformer winding;
- a fourth transformer winding;
- a first transformer assembly including the first transformer winding magnetically coupled to the third transformer winding;
- a second transformer assembly including the second transformer winding magnetically coupled to the fourth transformer winding;
- and
- a controller operative to control switching of the network of switches between a first mode and a second mode for each respective control cycle of multiple control cycles of converting an input voltage into the output voltage at the output node;
- wherein the first mode includes the controller:
- i) connecting a series combination of the first capacitor and the first transformer winding between an input voltage source producing the input voltage and the output node during a first portion of the respective control cycle;
- and ii) connecting the second capacitor and the second transformer winding in series between a reference voltage source and the output node during the first portion of the respective control cycle;
- and
- wherein the second mode includes the controller:
- i) connecting the second transformer winding between the reference voltage source and the output node during a second portion of the respective control cycle;
- and ii) connecting the first transformer winding between the reference voltage source and the output node during the second portion of the respective control cycle.
17 more elements
A power converter comprising:
- a first capacitor;
- a second capacitor;
- a network of switches operative to control generation of an output voltage via:
- i) resonance of the first capacitor and a first transformer winding operative to supply a first current to an output node of the power converter, and ii) resonance of the second capacitor and a second transformer winding operative to supply a second current to the output node of the power converter;
- and
- the first current being substantially equal to the second current;
- the power converter further comprising:
- a controller operative to control the generation of the output voltage via switching between operation of the power converter in a first mode and operation of the power converter in a second mode;
- wherein the operation of the power converter in the first mode includes the network of switches being controlled to connect a first series combination of the first capacitor and the first transformer winding between an input voltage source and the output node;
- and
- wherein the operation of the power converter in the second mode includes the network of switches being controlled to connect a second series combination of the second capacitor and a third transformer winding between the input voltage source and the output node;
- wherein the operation of the power converter in the first mode further includes the network of switches being controlled to connect a third series combination of the second capacitor and the second transformer winding between a reference voltage source and the output node;
- and
- wherein the operation of the power converter in the second mode further includes the network of switches being controlled to connect a fourth series combination of the first capacitor and a fourth transformer winding between the reference voltage source and the output node.
11 more elements
A power converter comprising:
- a first capacitor;
- a second capacitor;
- a network of switches operative to control generation of an output voltage via:
- i) resonance of the first capacitor and a first transformer winding operative to supply a first current to an output node of the power converter, and ii) resonance of the second capacitor and a second transformer winding operative to supply a second current to the output node of the power converter;
- and
- the first current being substantially equal to the second current;
- a controller operative to control the generation of the output voltage via switching between operation of the power converter in a first mode and operation of the power converter in a second mode;
- wherein the operation of the power converter in the first mode further includes:
- i) the network of switches being controlled to connect the first capacitor and the first transformer winding in series between an input voltage source and the output node;
- and ii) the network of switches being controlled to connect a fourth transformer winding in between a reference voltage source and the output node;
- and
- wherein the operation of the power converter in the second mode further includes:
- i) the network of switches being controlled to connect the second capacitor and a third transformer winding in series between the input voltage source and the output node;
- and ii) the network of switches being controlled to connect the first capacitor and the fourth transformer winding in series between the reference voltage source and the output node.
11 more elements
Dependencies are inferred from the claim text.