公开(公告)号：US09299394B2

公开(公告)日：2016-03-29

申请号：US13645427

申请日：2012-10-04

申请人： BROADCOM CORPORATION

发明人： Bharath Upputuri ,  Bruce Kauffmann ,  Ray Bloker

IPC分类号： G11C5/14 ,  G11C5/06

CPC分类号： G06F1/3287 ,  G06F1/3243 ,  G11C5/063 ,  G11C5/14 ,  H03K19/0016 ,  Y10T307/76

摘要： Systems and methods are provided for reducing surge current in power gated designs. In one aspect, a storage capacitor supplies a portion of the current used to power up a circuit. The storage capacitor may be charged from a power supply or other source. When the circuit is to be powered up, the circuit is connected to the power supply and the storage capacitor. As a result, current is supplied to the circuit from the power supply and the storage capacitor to power up the circuit. Because a portion of the current used to power up the circuit is supplied from the storage capacitor, the amount of current needed from the power supply to power up the circuit can be reduced, thereby reducing current surge through the power supply. The storage capacitor may be shared by multiple circuits.

摘要翻译： 提供了用于减少电力门控设计中的浪涌电流的系统和方法。 在一个方面，存储电容器提供用于为电路加电的电流的一部分。 存储电容器可以从电源或其他源充电。 电路上电时，电路与电源和存储电容相连。 结果，从电源和存储电容器向电路提供电流以为电路供电。 因为用于给电路供电的电流的一部分从存储电容器提供，所以可以减少从电源向电路加电所需的电流量，从而减少通过电源的电流浪涌。 存储电容器可以由多个电路共享。