Document Type

Patent

Publication Date

8-29-2017

Patent Number

9748837

CPC

H02M 3/07 (20130101)

Abstract

Dynamic power management techniques and voltage converter architectures are described to provide a secure and efficient on-chip power delivery system. In aspects of the embodiments, converter-gating is used to adaptively turn individual interleaved switched-capacitor stages of a voltage converter on and off based on workload information to improve voltage conversion efficiency. Further, as a countermeasure against machine learning based differential power analysis attacks, for example, control signals provided to a number of the interleaved switched-capacitor stages are delayed to reduce the risk of low power trace entropy (PTE). A higher PTE value is maintained regardless of the phase difference between an attacker's sampling rate and the operating frequency, providing an additional layer of security.

Application Number

14/811,033

Assignees

University of South Florida

Filing Date

2015-07-28

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