公开(公告)号：US09595827B2

公开(公告)日：2017-03-14

申请号：US14065181

申请日：2013-10-28

Applicant: NVIDIA CORPORATION

Inventor： Spencer Montgomery Gold ,  Karthik Natarajan

IPC: H02H3/08 ,  H02H9/02 ,  H02H9/04 ,  H02H9/00 ,  G06F1/26

CPC classification number: H02H9/04 ,  G06F1/26 ,  H02H9/002

Abstract: A subsystem is configured to apply a voltage source to a gated circuit domain in a manner that limits in-rush current and affords minimal time delay. A control signal turns on a wake-up switch that connects the voltage source to the domain. The equivalent series resistance of the wake-up switch has a magnitude that limits the transient charge current to the gated domain. A digital control circuit monitors the resulting rising domain voltage and determines when the domain voltage reaches operating level, at which point additional transient current will be minimal. The control circuit then activates a primary switch that connects the voltage source to the domain through a series resistance of negligible magnitude. An adjustment element provides the option to permanently set a control signal that marginally reduces the time at which the control circuit activates the primary switch to compensate for variations in circuit parameters.

Abstract translation: 子系统被配置为以限制浪涌电流并且提供最小时间延迟的方式将电压源施加到门控电路域。 控制信号打开将电压源连接到域的唤醒开关。 唤醒开关的等效串联电阻具有限制到门控域的瞬态充电电流的幅度。 数字控制电路监测产生的上升域电压，并确定域电压何时达到工作电平，此时额外的瞬态电流将最小。 然后，控制电路启动通过可忽略大小的串联电阻将电压源连接到该域的初级开关。 调整元件提供永久设置控制信号的选项，其稍微减小控制电路激活主开关的时间，以补偿电路参数的变化。