公开(公告)号：US07760558B2

公开(公告)日：2010-07-20

申请号：US12014454

申请日：2008-01-15

Applicant: Chin-Ghee Ch'ng ,  Kuan-Cheng Tang

Inventor： Chin-Ghee Ch'ng ,  Kuan-Cheng Tang

IPC: G11C7/00

CPC classification number: G11C8/08 ,  G11C16/08 ,  G11C16/30

Abstract: Systems and methods for improving efficiency of a voltage booster for read mode operations of memory cells and discharging a boosted supply voltage safely are disclosed. The system contains a plurality of boosting stages coupled in series including a plurality of boosting capacitors, a plurality of isolators. The isolator can be used to prevent boosting of one capacitor from negatively affecting a charge of the other adjacent capacitor to improve the efficiency of the voltage booster. A voltage booster circuit can accurately boost a supply voltage with a suitable number of boosting stages depending on a level of the supply voltage being provided. Since boosters contain a suitable number of boosting stages, the boosters can discharge a boosted voltage sequentially. With this sequential discharge method, memory cells can not have a hot switching problem.

Abstract translation: 公开了用于提高存储器单元的读取模式操作的升压器的效率并且安全地放电升压的电压的系统和方法。 该系统包括串联耦合的多个升压级，包括多个升压电容器，多个隔离器。 隔离器可用于防止一个电容器的升压对其他相邻电容器的电荷产生负面影响，以提高升压器的效率。 升压电路可以根据所提供的电源电平的水平，以适当数量的升压级来精确地提高电源电压。 由于增压器包含适当数量的升压级，所以增压器可以依次放电升压。 利用这种顺序放电方法，存储器单元不能具有热切换问题。

公开(公告)号：US20090180345A1

公开(公告)日：2009-07-16

申请号：US12014454

申请日：2008-01-15

Applicant: Chin-Ghee Ch'ng ,  Kuan-Cheng Tang

Inventor： Chin-Ghee Ch'ng ,  Kuan-Cheng Tang

IPC: G11C5/14

CPC classification number: G11C8/08 ,  G11C16/08 ,  G11C16/30

Abstract: Systems and methods for improving efficiency of a voltage booster for read mode operations of memory cells and discharging a boosted supply voltage safely are disclosed. The system contains a plurality of boosting stages coupled in series including a plurality of boosting capacitors, a plurality of isolators. The isolator can be used to prevent boosting of one capacitor from negatively affecting a charge of the other adjacent capacitor to improve the efficiency of the voltage booster. A voltage booster circuit can accurately boost a supply voltage with a suitable number of boosting stages depending on a level of the supply voltage being provided. Since boosters contain a suitable number of boosting stages, the boosters can discharge a boosted voltage sequentially. With this sequential discharge method, memory cells can not have a hot switching problem.

Abstract translation: 公开了用于提高存储器单元的读取模式操作的升压器的效率并且安全地放电升压的电压的系统和方法。 该系统包括串联耦合的多个升压级，包括多个升压电容器，多个隔离器。 隔离器可用于防止一个电容器的升压对其他相邻电容器的电荷产生负面影响，以提高升压器的效率。 升压电路可以根据所提供的电源电平的水平，以适当数量的升压级来精确地提高电源电压。 由于增压器包含适当数量的升压级，所以增压器可以依次放电升压。 利用这种顺序放电方法，存储器单元不能具有热切换问题。