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US 2024/0402740 A1Published application
Voltage regulator droop reduction mechanism
AssigneeNVIDIA Corporation
InventorsZhonghua Li, Wen-Hung Lo, Michael Ivan Halfen, Abhishek Dhir, Jaewon Lee, Jiwang Lee, CHUNJEN SU
Life of this patent
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Abstract
Power supply circuits in which a supplemental current driver is utilized to boost the current provided by a voltage regulator. The supplementing driver detects operating conditions for providing the supplementary current, and may be trained to provide particular amounts of current in response to particular operation conditions of a circuit load.
Claims20
A power supply circuit for a load, the power supply circuit comprising:
- a power supply voltage regulator;
- a current driver configured to supply current to a load node of a circuit in parallel with the voltage regulator;
- and
- a switch configured to couple the current driver to the load node in response to an input signal to the load.
1 more element
A power supply training circuit comprising:
- a current driver comprising a plurality of incremental current sources;
- a load;
- training logic to sequence through a first plurality of switch settings between the current driver and the load;
- and
- a comparator configured to receive a reference load voltage and a supply voltage generated at the load in response to current from the current driver to generate a signal to capture a digital code from the training logic corresponding to the switch settings satisfying the reference load voltage.
2 more elements
A circuit comprising:
- a voltage regulator coupled to a power rail;
- a current driver comprising a plurality of incremental current sources configured in parallel with the voltage regulator between a load and the power rail;
- and
- a plurality of independently-operable switches configured between the incremental current sources and the load, the switches responsive to one or more of an enable signal, clock signal, and binary sequence applied to the load.
1 more element
Dependencies are inferred from the claim text.