Voltage regulator for field programmable gate arrays
First Claim
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1. A semiconductor device having a plurality of core logic elements, comprising:
- a voltage regulator means, adapted to receive an external voltage and a reference-level voltage, for generating a first voltage having a magnitude between said external voltage and said reference-level voltage;
a core logic power supply means for generating a second voltage, said second voltage having a magnitude between said external voltage and said reference-level voltage; and
selection means for supplying said first voltage to said core logic elements in response to one state of a control signal and for supplying said second voltage to said core logic elements in response to another state of said control signal.
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Abstract
A voltage regulator especially adaptable for use with field-programmable gate arrays (FPGA). The voltage regulator is configurable as a true voltage regulator or, alternatively, as a pseudo-voltage regulator. The voltage regulator includes circuitry to rapidly generate an operating voltage for the core or nucleus logic elements. Additional circuitry is provided to reduce the steady-state power consumption once the operating voltage is reached. To compensate for die-to-die variations, additional circuitry is also provided to adjust the compensation delays or switching rates.
86 Citations
7 Claims
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1. A semiconductor device having a plurality of core logic elements, comprising:
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a voltage regulator means, adapted to receive an external voltage and a reference-level voltage, for generating a first voltage having a magnitude between said external voltage and said reference-level voltage; a core logic power supply means for generating a second voltage, said second voltage having a magnitude between said external voltage and said reference-level voltage; and selection means for supplying said first voltage to said core logic elements in response to one state of a control signal and for supplying said second voltage to said core logic elements in response to another state of said control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification