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Voltage control utilizing multiple PWM patterns

專利號
US10097090B1
公開日期
2018-10-09
申請人
International Business Machines Corporation(US NY Armonk)
發(fā)明人
Andrew Ferencz; Todd E. Takken; Paul W. Coteus; Xin Zhang
IPC分類
G05F1/00; H02M3/158; H02M1/36; H02P9/30; H02M1/08; H02M1/00
技術(shù)領(lǐng)域
voltage,steady,controller,converter,pwm,may,cyclic,pattern,in,cycle
地域: NY NY Armonk

摘要

A power-delivery system may comprise a load device and a direct-current converter configured to deliver current to the load device when the direct-current converter is in an on state. The power-deliver system may comprise a voltage-measurement system configured to measure, at a beginning of each measurement cycle in a cyclic measurement pattern, a voltage at the load device. The power-deliver system may comprise a power controller configure to receive, at the beginning of each measurement cycle, the measurement of the voltage, and to perform, at the beginning of a control cycle in a cyclic control pattern, a voltage-control decision in response to a change in the measurement of the voltage being below a voltage-change threshold. The voltage-control decision may comprise whether to switch the state of the first direct-current converter. The cyclic control pattern may operate at a first frequency, and the measurement pattern may operate at a second frequency.

說明書

FIG. 1 illustrates a flowchart of an example method 100 of controlling the voltage at the device with a single cyclic measurement pattern and multiple cyclic PWM patterns (in this example, referred to as a steady-state cyclic control pattern and an oversampling cyclic control pattern). In method 100, a voltage controller measures the voltage at the electronic device (e.g., a computer processor) at block 102. This measurement may occur at the beginning of a measurement cycle in a cyclic measurement pattern. The measurement cycles in the cyclic measurement pattern may have a measurement period. The inverse of this measurement period may be referred to as the measurement frequency, and may be an expression of how often the voltage is measured in the cyclic measurement pattern.

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