Fully integrated voltage regulator using open loop digital control for optimum power stepping and slew rate
First Claim
1. A method for regulating an output voltage, the method comprising:
- receiving, from a digital state machine, a digital power setting control signal based on an identified state of an electrical circuit comprising a digital core, the identified state representing a predefined operating condition of the electrical circuit, the digital power setting control signal being generated based on a digital logic state of the digital core, the digital logic state indicating a load current demand of the electrical circuit in the identified state in order to maintain the output voltage to the electrical circuit at a predetermined voltage level;
enabling one or more parallel driver segments based on the digital power setting control signal;
sourcing by the enabled one or more parallel driver segments current to meet the load current demand of the electrical circuit in the identified state while maintaining the output voltage at the predetermined voltage level; and
providing the output voltage to the electrical circuit at the predetermined voltage level.
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Accused Products
Abstract
Methods and systems are disclosed for an integrated voltage regulator with open loop digital control for power stepping. In one aspect, a method for regulating an output voltage includes receiving data indicative of a power setting associated with an identified state of an electrical circuit, the power setting based on a load current demand of the electrical circuit in the identified state, enabling one or more parallel driver segments based on the received data indicative of the power setting. The method further includes sourcing by the enabled one or more parallel driver segments sufficient current to meet the load current demand of the electrical circuit in the identified state while maintaining the output voltage at a predetermined voltage level, and providing the output voltage to the electrical circuit at the predetermined voltage level.
27 Citations
20 Claims
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1. A method for regulating an output voltage, the method comprising:
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receiving, from a digital state machine, a digital power setting control signal based on an identified state of an electrical circuit comprising a digital core, the identified state representing a predefined operating condition of the electrical circuit, the digital power setting control signal being generated based on a digital logic state of the digital core, the digital logic state indicating a load current demand of the electrical circuit in the identified state in order to maintain the output voltage to the electrical circuit at a predetermined voltage level; enabling one or more parallel driver segments based on the digital power setting control signal; sourcing by the enabled one or more parallel driver segments current to meet the load current demand of the electrical circuit in the identified state while maintaining the output voltage at the predetermined voltage level; and providing the output voltage to the electrical circuit at the predetermined voltage level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising:
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an electrical circuit comprising a digital core; a digital state machine configured to identify one or more states of the electrical circuit, wherein each of the one or more identified states is based on a respective power setting, the power setting based on a digital logic state indicating a load current demand of the digital core of the electrical circuit in the identified state in order to maintain an output voltage to the electrical circuit at a predetermined voltage level, the identified state representing a predefined operating condition of the electrical circuit; one or more parallel driver segments configured to source current in order to meet the load current demand of the electrical circuit in a corresponding identified state of the one or more identified states; and an amplifier configured to accommodate system load changes for a power range of the power setting associated with the identified state in order to maintain the output voltage at the predetermined voltage level for the identified state. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification