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US 12,719,476 B2Granted
Level-conversion circuits for signaling across voltage domains
AssigneeNVIDIA Corporation
InventorsWalker Joseph Turner, John Poulton, Sanquan Song
Life of this patent
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Abstract
Stacked voltage domain level shifting circuits for shifting signals low-to-high or high-to-low include a storage cell and control drivers powered by a mid-range supply rail of the stacked voltage domain level shifting circuit, wherein the control drivers are coupled to drive common-source configured devices coupled to storage nodes of the storage cell.
Claims11
A stacked voltage domain level shifting circuit comprising:
- a storage cell configured to generate a pair of stored voltages at a pair of storage nodes in response to a change in an input signal voltage level;
- a pair of control drivers powered by a mid-range supply rail of the stacked voltage domain level shifting circuit, the control drivers coupled to drive gates of a first common-source configured device pair coupled to the storage nodes;
- and
- a pair of cascoded transistors interposed between the storage nodes and the common-source configured device pair.
1 more element
A method for shifting a signal from a first voltage level to a second voltage level, the method comprising:
- transitioning a pair of stored values at storage nodes of a storage cell of a stacked voltage domain level shifting circuit;
- operating a pair of drivers with a supply voltage provided from a mid-range supply rail of the stacked voltage domain level shifting circuit;
- and
- driving gates of common-source configured devices coupled to the storage nodes with outputs of the drivers, the common-source configured devices being coupled to the storage nodes through a pair of cascoded transistors interposed between the storage nodes and the common-source configured devices.
1 more element
A stacked voltage domain level shifting circuit comprising:
- a storage cell;
- control drivers powered by a mid-range supply rail of the stacked voltage domain level shifting circuit, the control drivers coupled to drive common-source configured devices coupled to storage nodes of the storage cell;
- and
- a pair of cascoded transistors interposed between the storage nodes and the common-source configured devices.
1 more element
Dependencies are inferred from the claim text.