Digital controller for high-frequency switching power supplies
First Claim
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1. A voltage controller comprising:
- a compensator including a lookup table for determining a digital control signal based on a digital error signal;
a modulator operative to provide a power control signal in response to said determined digital control signal; and
a delay line analog to digital converter operative to compare a converter voltage to a reference voltage and generate said digital error signal indicative of a difference between said compared voltages;
wherein said compensator, said modulator, and said delay line of said controller include no passive electronic components.
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Abstract
A voltage controller (150), the controller comprising: a voltage comparator (700) operative to provide a digital error signal (152); a compensator (300) operative to determine a digital control signal (154) based on said provided error signal; and a modulator (400) operative to provide a power control signal (156) based on said determined digital control signal, wherein said comparator, said compensator, and said modulator are implemented entirely with digital logic gates.
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Citations
27 Claims
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1. A voltage controller comprising:
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a compensator including a lookup table for determining a digital control signal based on a digital error signal; a modulator operative to provide a power control signal in response to said determined digital control signal; and a delay line analog to digital converter operative to compare a converter voltage to a reference voltage and generate said digital error signal indicative of a difference between said compared voltages; wherein said compensator, said modulator, and said delay line of said controller include no passive electronic components. - View Dependent Claims (2, 3, 4)
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5. A voltage controller comprising:
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a compensator including a lookup table for determining a digital control signal based on a digital error signal; a modulator operative to provide a power control signal in response to said determined digital control signal; and a delay line analog to digital converter operative to compare a converter voltage to a reference voltage and generate said digital error signal indicative of a difference between said compared voltages; wherein said controller is implemented entirely with digital logic gates. - View Dependent Claims (6, 7, 8, 9)
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10. A voltage controller comprising:
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a compensator including a lookup table for determining a digital control signal based on a digital error signal; a modulator operative to provide a power control signal in response to said determined digital control signal; and a delay line analog to digital converter operative to compare a converter voltage to a reference voltage and generate said digital error signal indicative of a difference between said compared voltages; wherein all energy-storing components in said controller are digital logic gates.
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11. A voltage controller comprising:
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a compensator including a lookup table for determining a digital control signal based on a digital error signal; a modulator operative to provide a power control signal in response to said determined digital control signal; and a delay line analog to digital converter operative to compare a converter voltage to a reference voltage and generate said digital error signal indicative of a difference between said compared voltages; wherein said delay line ADC comprises a delay cell array.
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12. A voltage controller comprising:
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a compensator including a lookup table for determining a digital control signal based on a thermometer code digital error signal; a modulator operative to provide a power control signal in response to said determined digital control signal; and a delay line analog to digital converter (ADC) operative to compare a converter voltage to a reference voltage and generate said thermometer code digital error signal indicative of a difference between said compared voltages. - View Dependent Claims (13, 14)
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15. A voltage controller comprising:
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a compensator including a lookup table for determining a digital control signal based on a digital error signal; a modulator operative to provide a power control signal in response to said determined digital control signal; and a delay line analog to digital converter operative to compare a converter voltage to a reference voltage and generate said digital error signal indicative of a difference between said compared voltages; wherein said modulator comprises a delay line operative to determine a component of a pulse-on period for said power control signal.
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16. A voltage controller comprising:
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a compensator including a lookup table for determining a digital control signal based on a digital error signal; a modulator operative to provide a power control signal in response to said determined digital control signal; and a delay line analog to digital converter operative to compare a converter voltage to a reference voltage and generate said digital error signal indicative of a difference between said compared voltages; wherein said modulator comprises; a counter operative to determine a first component of a pulse-on period for said power control signal; and a delay line operative to determine a second component of said pulse-on period for said power control signal.
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17. A method for controlling voltage, the method comprising:
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comparing a converter output voltage with a reference voltage; generating a digital error signal indicative of a result of said comparing; and providing a power control signal indicative of said generated error signal, wherein signal processing of said comparing, said generating, and said providing are performed entirely with digital logic gates. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method of controlling a regulator output voltage, the method comprising:
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receiving said regulator output voltage; converting said received regulator output voltage into a digital error signal employing a delay line analog to digital converter (ADC); and adjusting said regulator output voltage to an adjusted regulator output voltage based on said digital error signal; wherein said converting comprises; powering a delay cell array of said delay line ADC with said received regulator output voltage; measuring a speed of test signal propagation through said powered delay cell array; and generating said digital error signal indicative of said measured test signal propagation speed. - View Dependent Claims (24, 25, 26, 27)
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Specification