METHOD FOR CONTROLLING OUTPUT OF A POWER SUPPLY UNIT TO SUPPLY POWER TO MULTIPLE PROCESSORS
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United States of America Patent
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Issued Date -
Nov 12, 2015
app pub date -
May 6, 2015
filing date -
May 9, 2014
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Abstract
A method for controlling an output of a power supply unit (PSU) in order to prevent a shutdown of the PSU to supply power to a group of processors (CPUs) is disclosed. A PSU supplies power to a multicore CPU. An input current flowing into multiple CPU cores includes a pulse current. When the pulse current of each of CPU cores is superposed on an output current of the PSU, a protection device is operated to perform a shutdown. A clock control determination unit compares the output current and a reference signal and thereby outputs a control signal. A group of peak detection units detects a peak value of the pulse current. A control unit selects a processor targeted for clock control, based on the peak value and outputs a control signal for reducing a clock frequency to the selected processor while receiving the control signal.
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