公开(公告)号：US5969549A

公开(公告)日：1999-10-19

申请号：US957363

申请日：1997-10-24

Applicant: Dae Jeong Kim ,  Youn-Cherl Shin

Inventor： Dae Jeong Kim ,  Youn-Cherl Shin

IPC: G05F3/24 ,  G11C5/14 ,  H03H2/00 ,  H01L7/00

CPC classification number: G11C5/143 ,  G11C5/147

Abstract: An improved current detection start-up circuit for a reference voltage circuit which restarts a reference voltage circuit when a reference voltage drops by a predetermined level, i.e., turns off, due to noise or a variation of a system voltage. The circuit includes: a current detection circuit for detecting the current being applied to a reference voltage circuit; and a start-up circuit for starting the reference voltage circuit when the current detected by the current detection circuit is below a predetermined level.

Abstract translation: 一种用于参考电压电路的改进的电流检测启动电路，当参考电压由于噪声或系统电压的变化而降低预定电平即关断时重新启动参考电压电路。 该电路包括：电流检测电路，用于检测施加于基准电压电路的电流; 以及当由电流检测电路检测到的电流低于预定电平时启动基准电压电路的启动电路。

公开(公告)号：US6160392A

公开(公告)日：2000-12-12

申请号：US225304

申请日：1999-01-05

Applicant: Youn-Cherl Shin

Inventor： Youn-Cherl Shin

IPC: G05F1/52 ,  G05F1/46 ,  G05F3/24 ,  G05F3/16

CPC classification number: G05F3/242 ,  G05F1/468 ,  Y10S323/901

Abstract: A start-up circuit for a reference voltage generator which restarts a reference voltage generating circuit when a reference voltage drops below a predetermined level due to noises or change of a power supply voltage. The start-up circuit according to the present invention includes a reference voltage generating unit operated by an input signal and generating a reference voltage in accordance with a power supply voltage, a reference voltage sensing unit determining whether an output signal from the reference voltage generating unit is lower than a predetermined voltage level, and a start-up circuit unit determining an initial operation of the reference voltage generating unit in accordance with a reset signal and supplying the input signal to restart the reference voltage generating unit in accordance with an output signal from the reference voltage sensing unit.

Abstract translation: 用于参考电压发生器的启动电路，当参考电压由于噪声或电源电压变化而降低到预定电平以下时，基准电压产生电路重启。 根据本发明的起动电路包括由输入信号操作并根据电源电压产生参考电压的参考电压产生单元，基准电压感测单元确定来自参考电压产生单元的输出信号 低于预定电压电平，启动电路单元根据复位信号确定基准电压产生单元的初始动作，并根据来自所述基准电压产生单元的输出信号提供输入信号以重新启动基准电压产生单元 参考电压感测单元。

公开(公告)号：US06104234A

公开(公告)日：2000-08-15

申请号：US997088

申请日：1997-12-23

Applicant: Youn-Cherl Shin ,  Dae-Jeong Kim

Inventor： Youn-Cherl Shin ,  Dae-Jeong Kim

IPC: G11C11/413 ,  G05F3/20 ,  G11C7/00 ,  G11C11/408 ,  H01L21/8242 ,  H01L27/108 ,  G05F1/10

CPC classification number: G05F3/205

Abstract: An improved substrate voltage (VBB) generation circuit is disclosed. The circuit reduces variations in VBB (.DELTA.VBB) caused by variations (.DELTA.VCC) in a system voltage (VCC) by making a threshold voltage (Vt) of a logic element, e.g., an inverter of in a buffer, more sensitive to .DELTA.VCC. In contrast, the conventional art had attempted to reduce .DELTA.VBB by making the Vt of the logic element less sensitive to .DELTA.VCC. Two features of the improved logic element of the circuit contribute to the reduction of .DELTA.VBB. These features are: adopting an opposite channel ratio arrangement versus the conventional art; and incorporating additional active resistors.

Abstract translation: 公开了一种改进的基板电压（VBB）产生电路。 该电路通过使逻辑元件的阈值电压（Vt）（例如缓冲器中的反相器）对DELTA更敏感，从而减小由系统电压（VCC）中的变化（DELTA VCC）引起的VBB（DELTA VBB）变化 VCC。 相比之下，传统技术已经尝试通过使逻辑元件的Vt对DELTA VCC不太敏感来减少DELTA VBB。 电路改进的逻辑元件的两个特征有助于减少DELTA VBB。 这些特征是：采用与传统技术相反的通道比率布置; 并加入额外的有源电阻。