POWER CONTROL CONTROLLER, SEMICONDUCTOR DEVICE, AND SEMICONDUCTOR SYSTEM
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United States of America Patent
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Apr 25, 2017
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Jul 26, 2016
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An object of the present invention is to finely adjust a voltage for each processor core. A semiconductor system includes a semiconductor device and a power supply device configured to supply a fixed voltage to a supply voltage line. The semiconductor device includes a plurality of power control controllers. Each of the plurality of power control controllers includes a processor core, a plurality of switch transistors connected in parallel between the supply voltage line and a control voltage line, the control voltage line supplying a power supply voltage to the processor core, an AD converter configured to convert a control voltage output from the control voltage line into a current voltage value, the current voltage value being a digital value, and a step-down controller configured to control the plurality of switch transistors in order to bring the converted current voltage value close to a target voltage value.
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