INTEGRATED MULTIPLE OUTPUT POWER CONVERSION SYSTEM
First Claim
1. A voltage converter comprising:
- a plurality of power conversion circuits operable to receive respective digital control inputs and to supply respective output signals that are separately programmable to have respective desired voltages;
a control circuit, a portion of which is shared by the power conversion circuits on a time multiplexed basis, operable to supply the respective digital control inputs, the shared portion of the control circuit including,a first selector circuit to select on the time multiplexed basis one of a plurality of first signals including set points for respective ones of the output signals;
a digital-to-analog converter to convert a selected set point to an analog set point signal, the digital-to-analog converter being shared on a time multiplexed basis by the first signals;
a second selector circuit to select one of a plurality of second signals on the time multiplexed basis, the second signals including measured signals that correspond to respective ones of the first signals; and
a summer coupled to determine a difference between the analog set point signal and a selected one of measured signals and generate an error signal indicative thereof
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Accused Products
Abstract
A voltage converter includes a plurality of power conversion circuits that receive respective digital control inputs and supply respective output signals that are separately programmable to have respective desired voltages. A control circuit, a portion of which is shared by the power conversion circuits on a time multiplexed basis, supplies the digital control inputs. The shared portion of the control circuit includes, a first selector circuit to select on the time multiplexed basis set points for respective ones of the output signals; a digital-to-analog converter to convert a selected set point to an analog set point signal, a second selector circuit to select one of measured signals that correspond to respective ones of the set points, and a summer coupled to determine a difference between the analog set point signal and a corresponding measured signal and generate an error signal indicative thereof
43 Citations
32 Claims
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1. A voltage converter comprising:
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a plurality of power conversion circuits operable to receive respective digital control inputs and to supply respective output signals that are separately programmable to have respective desired voltages; a control circuit, a portion of which is shared by the power conversion circuits on a time multiplexed basis, operable to supply the respective digital control inputs, the shared portion of the control circuit including, a first selector circuit to select on the time multiplexed basis one of a plurality of first signals including set points for respective ones of the output signals; a digital-to-analog converter to convert a selected set point to an analog set point signal, the digital-to-analog converter being shared on a time multiplexed basis by the first signals; a second selector circuit to select one of a plurality of second signals on the time multiplexed basis, the second signals including measured signals that correspond to respective ones of the first signals; and a summer coupled to determine a difference between the analog set point signal and a selected one of measured signals and generate an error signal indicative thereof - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for converting an input voltage to a plurality of output voltages comprising:
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selecting in a first selector circuit on a time multiplexed basis each of a plurality of set point values respectively corresponding to one of the output voltages; selecting in a second selector circuit on the time multiplexed basis respective first measured values corresponding to respective ones of the output voltages; and generating respective error signals indicative of the difference between respective set point values and the respective measured values. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for operating a voltage converter comprising:
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selecting on a time multiplexed basis each of a plurality of desired reference voltages corresponding to respective output voltages to be generated by the voltage converter on a respective plurality of outputs; selecting on the time multiplexed basis respective measured output voltage values corresponding to respective ones of the reference voltages; generating an error signal indicative of the difference between respective desired reference voltages and respective measured output voltages on a time multiplexed basis; and processing each error signal to adjust respective output voltages to reflect the desired reference voltages. - View Dependent Claims (25, 26, 27)
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28. A voltage converter apparatus comprising
a plurality of power conversion circuits operable to supply respective output voltage rails that are separately programmable to have respective desired voltages; a control circuit operable to provide sequencing control for one or more of the output voltage rails to control at least one of turn on and turn off of the voltage rail according to a logical combination of conditions. - View Dependent Claims (29, 30, 31, 32)
Specification