Analysis of buck converters for on-chip integration with a dual supply voltage microprocessor
IEEE Transactions on Very Large Scale Integration (VLSI) Systems - Special section on the 2001 international conference on computer design (ICCD)
Power Distribution Networks with On-Chip Decoupling Capacitors
Power Distribution Networks with On-Chip Decoupling Capacitors
Distributed power network co-design with on-chip power supplies and decoupling capacitors
Proceedings of the System Level Interconnect Prediction Workshop
Active filter-based hybrid on-chip DC-DC converter for point-of-load voltage regulation
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
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An ultra-low area, current efficient voltage regulator appropriate for distributed point-of-load voltage regulation in high performance integrated circuits (ICs) is described in this paper. The proposed voltage regulator is a hybrid combination of a switching voltage regulator and a linear voltage regulator. The voltage regulator can supply over 100 mA current while generating 0.9 volts from a 1.2 input voltage. The current efficiency exceeds 99% while the load regulation to a step current ranges between 40 ns and 60 ns. No output capacitor is required to ensure stability. Hence, the required on-chip area is as small as 0.026 mm^2 for the proposed voltage regulator which is approximately four to six times smaller than area efficient low dropout regulators. The proposed circuit therefore provides a means for distributing multiple local power supplies across an integrated circuit, maintaining high current efficiency and small area.