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1. (WO2015126790) FAST AND AUTONOMOUS MECHANISM FOR CPU OC PROTECTION

Pub. No.:    WO/2015/126790    International Application No.:    PCT/US2015/016071
Publication Date: Fri Aug 28 01:59:59 CEST 2015 International Filing Date: Tue Feb 17 00:59:59 CET 2015
IPC: G05F 1/573
Applicants: MEDIATEK SINGAPORE PTE. LTD.
MAIR, Hugh Thomas
GURURAJARAO, Sumanth Katte
GAMMIE, Gordon
WANG, Alice
KO, Uming
LAGERQUIST, Rolf
Inventors: MAIR, Hugh Thomas
GURURAJARAO, Sumanth Katte
GAMMIE, Gordon
WANG, Alice
KO, Uming
LAGERQUIST, Rolf
Title: FAST AND AUTONOMOUS MECHANISM FOR CPU OC PROTECTION
Abstract:
A method of detecting and preventing over current induced system failure is provided. An OC protect controller monitors a CPU total power consumption based on received CPU activity information. In response to the monitoring, if the CPU power consumption is over a threshold, then the OC protect controller outputs a frequency dithering control signal to reduce the CPU clock frequency such that the CPU does not reach an OC limit. The OC protect controller also outputs a PLL frequency control signal to reduce the PLL clock frequency to improve system efficiency.