专利名称：Per-phase current calibration method for a
multi-phase voltage regulator
发明人：Feng-Yu Wu,Tsai-Fu Hung,Shin-Chen
Wang,Shiguo Luo,Kejiu Zhang
申请号：US14841676
申请日：20150831
公开号：US09971389B2
公开日：
20180515
专利内容由知识产权出版社提供
专利附图：
摘要：An information handling system (IHS) performs current calibration of a multi-phase VR using leakage current as a reference current. The IHS includes a multi-phase
voltage regulator (VR) module coupled to an output port of a power supply unit (PSU). The VR module includes: a multi-phase VR having an integrated power stage that provides pulse width modulation (PWM) functionality for controlling operating phases of VR current in the multi-phase VR; and a digital controller coupled to the multi-phase VR. The controller: enables a known, high accuracy operating phase as loading calibrator for offset training; records a leakage current value as a reference current; enables a first unknown, low accuracy operating phase; determines, for the unknown operating phase, an offset value that provides a specified target current accuracy; updates an offset register for the unknown operating phase with the corresponding offset value; and disables the unknown operating phase.
申请人：DELL PRODUCTS, L.P.register for
地址：Round Rock TX US
国籍：US
代理机构：Isidore PLLC
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