METHOD AND APPARATUS FOR POWER CONVERSION AND REGULATION
First Claim
1. A power converter, comprising:
- an energy transfer element coupled between a power converter input and first and second power converter outputs;
a switch coupled between the power converter input and the energy transfer element such that switching of the switch causes a first voltage to be generated at the first power converter output and a second voltage to be generated at the second power converter output;
a control circuit coupled to the switch to control switching of the switch to regulate an output voltage in response to a signal received at a terminal of the control circuit, wherein the signal is proportional to a sum of the first and second voltages;
a first means for regulating a first current at the first output; and
a second means for regulating a second current at the second output, wherein the first means regulates the first current independent of the second means and the second means regulates the second current independent of the first means.
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Abstract
Techniques are disclosed to control a power converter with multiple output voltages. One example regulated power converter includes a an energy transfer element coupled between a power converter input and first and second power converter outputs. A switch is coupled between the power converter input and the energy transfer element such that switching of the switch causes a first output voltage to be generated at the first power converter output and a second output voltage to be generated at the second power converter output. A current in the energy transfer element is coupled to increase when a voltage across the energy transfer element is a difference between an input voltage at the power converter input and the first output voltage. The current in the energy transfer element is coupled to decrease when the voltage across the energy transfer element is a sum of the first and second output voltages.
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Citations
12 Claims
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1. A power converter, comprising:
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an energy transfer element coupled between a power converter input and first and second power converter outputs; a switch coupled between the power converter input and the energy transfer element such that switching of the switch causes a first voltage to be generated at the first power converter output and a second voltage to be generated at the second power converter output; a control circuit coupled to the switch to control switching of the switch to regulate an output voltage in response to a signal received at a terminal of the control circuit, wherein the signal is proportional to a sum of the first and second voltages; a first means for regulating a first current at the first output; and a second means for regulating a second current at the second output, wherein the first means regulates the first current independent of the second means and the second means regulates the second current independent of the first means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification