CURRENT BALANCING CIRCUIT AND METHOD
First Claim
1. A method for current balancing in a multi-phase power converter having a plurality of outputs, comprising:
- providing a plurality of currents;
providing a plurality of input signals; and
switching at least first and second input signals in accordance with current levels of at least two currents of the plurality of currents, levels of at least two input signals of the plurality of input signals, and whether one or more of at least one input signal of the plurality of input signals is one of increasing or decreasing.
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Abstract
A multi-phase power converter and a method for balancing a plurality of currents in the multi-phase power converter. The multi-phase power converter that includes a pulse width modulator coupled to an oscillator. A plurality of currents are generated in response to output signals from the pulse width modulator. The levels of the currents are sensed and a sense signal is transmitted to the pulse width modulator. Switching circuitry within the pulse width modulator switches signals from the oscillator in accordance with the current levels, the levels of the signals from the oscillator, and whether at least one of the signals from the oscillator is either rising or falling.
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Citations
20 Claims
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1. A method for current balancing in a multi-phase power converter having a plurality of outputs, comprising:
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providing a plurality of currents; providing a plurality of input signals; and switching at least first and second input signals in accordance with current levels of at least two currents of the plurality of currents, levels of at least two input signals of the plurality of input signals, and whether one or more of at least one input signal of the plurality of input signals is one of increasing or decreasing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for current balancing in a system that has an error signal, comprising:
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providing a plurality of input signals, wherein a first input signal of the plurality of input signals has a first phase, a second input signal of the plurality of input signals has a second phase, and where the first and second phases are different from each other; and switching the first phase of the first input signal with the second phase of the second input signal to balance currents in the system. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A multi-phase power converter, comprising:
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a pulse width modulator having at least one input and at least one output, wherein the pulse width modulator comprises; a first switching circuit having a first input, a second input, and an output; a second switching circuit having a first input, a second input, and an output; and a switch control circuit having at least first and second inputs and a plurality of outputs, wherein a first input of the at least one input is coupled to the first input of the first switching circuit and to the first input of the second switching circuit. - View Dependent Claims (17, 18, 19, 20)
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Specification