Invention Grant
- Patent Title: Methods and systems for dynamically controlling operations in a non-volatile memory to limit power consumption
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Application No.: US12843448Application Date: 2010-07-26
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Publication No.: US08555095B2Publication Date: 2013-10-08
- Inventor: Matthew Byom , Vadim Khmelnitsky , Hugo Fiennes , Arjun Kapoor
- Applicant: Matthew Byom , Vadim Khmelnitsky , Hugo Fiennes , Arjun Kapoor
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Van Court & Aldridge LLP
- Main IPC: G06F1/26
- IPC: G06F1/26 ; G06F1/32 ; G06F13/00 ; G06F13/28

Abstract:
Systems and methods are disclosed for limiting power consumption of a non-volatile memory (NVM) using a power limiting scheme that distributes a number of concurrent NVM operations over time. This provides a “current consumption cap” that fixes an upper limit of current consumption for the NVM, thereby eliminating peak power events. In one embodiment, power consumption of a NVM can be limited by receiving data suitable for use as a factor in adjusting a current threshold from at least one of a plurality of system sources. The current threshold can be less than a peak current capable of being consumed by the NVM and can be adjusted based on the received data. A power limiting scheme can be used that limits the number of concurrent NVM operations performed so that a cumulative current consumption of the NVM does not exceed the adjusted current threshold.
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