专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US5905402A Voltage pump circuit having an independent well-bias voltage 失效
标题翻译：电压泵电路具有独立的良好偏置电压
公开(公告)号：US5905402A
公开(公告)日：1999-05-18
申请号：US866128
申请日：1997-05-30
申请人： Tae-Hoon Kim , Young-Hyun Jun
发明人： Tae-Hoon Kim , Young-Hyun Jun
IPC分类号： G11C11/407 , G11C5/14 , G11C11/408 , H01L21/8234 , H01L27/088 , H02M3/07 , G05F3/02
CPC分类号： H02M3/07
摘要： A voltage pump circuit for precharging/pumping a charge to/from a pumping capacitor separately employs a voltage generator for independently supplying a well-bias voltage to a PMOS transfer transistor which transfers a charge of a precharged capacitor to produce reference voltage. The voltage of the voltage generator is applied to a well of the PMOS transfer transistor to body bias the PMOS transfer transistor and, thus, ruggedize its threshold voltage transistor. Here, the well-bias voltage equals or exceeds the reference voltage while being approximately twice a power source voltage. The well-bias voltage generator includes a non-overlap control circuit for receiving a pulse signal as an input to generate two pulse signals having different points of changing into high and low states, a second pumping capacitor, first, second and third bootstrap capacitors, a precharge circuit for precharging the voltage on the second pumping capacitor and first and second bootstrap capacitors for a predetermined period, a first step control circuit for controlling a first-step transistor, a second step control circuit for controlling a second-step transistor and a pumping control circuit for controlling a third-step transistor, which are provided for precharging the voltage to the third bootstrap capacitor, and a transfer transistor having a gate connected to the reference voltage of the third bootstrap capacitor for transferring the well-bias voltage.
摘要翻译：用于向/从泵送电容器预充电/泵送电荷的电压泵电路分别采用电压发生器，用于独立向PMOS传输晶体管提供阱偏置电压，PMOS传输晶体管传送预充电电容器的电荷以产生参考电压。电压发生器的电压被施加到PMOS传输晶体管的阱以对PMOS传输晶体管进行偏置，并因此加强其阈值电压晶体管。这里，阱偏置电压等于或超过参考电压，而大约是电源电压的两倍。阱偏置电压发生器包括：不重叠控制电路，用于接收作为输入的脉冲信号，以产生具有变为高和低状态的不同点的两个脉冲信号;第二泵浦电容器，第一，第二和第三自举电容器; 预充电电路，用于对预定时间段内的第二泵浦电容器和第一和第二自举电容器进行预充电;第一级控制电路，用于控制第一级晶体管;第二级控制电路，用于控制第二级晶体管;以及泵控制电路，用于控制用于对第三自举电容器进行电压预充电的第三级晶体管;以及传输晶体管，其具有连接到第三自举电容器的参考电压的栅极，用于传送阱偏置电压。

42. 发明授权

US5602506A Back bias voltage generator 失效
标题翻译：背偏置电压发生器
公开(公告)号：US5602506A
公开(公告)日：1997-02-11
申请号：US362299
申请日：1994-12-22
申请人： Tae-Hoon Kim , Young-Hyun Jun
发明人： Tae-Hoon Kim , Young-Hyun Jun
IPC分类号： H01L27/04 , G11C5/14 , G11C11/408 , H01L21/822 , H02M3/07 , G05F1/10
CPC分类号： G11C5/146 , H02M3/07 , H01L2924/0002
摘要： A back bias voltage generator comprising a power-on signal generator for generating a power-on signal when an external voltage remains at a constant level, a reference voltage generator for generating a reference voltage in response to the power-on signal from the power-on signal generator, an internal voltage generator for generating an internal voltage and an internal/external voltage select signal in response to the reference voltage from the reference voltage generator, the internal voltage being constant in level, a back bias voltage sensor for generating an oscillation enable signal in response to the external voltage or the internal voltage from the internal voltage generator under control of the internal/external voltage select signal from the internal voltage generator, an oscillator for generating an oscillating signal at a desired period and an enable signal in response to the oscillation enable signal from the back bias voltage sensor and outputting the generated enable signal to the internal voltage generator, and a back bias voltage pump for performing a voltage pumping operation in response to the oscillating signal from the oscillator to generate a desired level of back bias voltage and outputting the generated back bias voltage to an external circuit and the back bias voltage sensor.
摘要翻译：背偏置电压发生器，其包括用于当外部电压保持在恒定电平时产生通电信号的上电信号发生器，用于响应于来自电源开关信号的电源接通信号产生参考电压的参考电压发生器，信号发生器，内部电压发生器，用于响应于来自参考电压发生器的参考电压产生内部电压和内部/外部电压选择信号，内部电压水平恒定;用于产生振荡的反向偏置电压传感器在来自内部电压发生器的内部/外部电压选择信号的控制下，响应于来自内部电压发生器的外部电压或内部电压的使能信号，用于在期望周期产生振荡信号的振荡器和响应中的使能信号到来自背偏压电压传感器的振荡使能信号，并输出所产生的使能信号内部电压发生器和反向偏置电压泵，用于响应于来自振荡器的振荡信号进行电压抽运操作，以产生期望电平的反向偏置电压，并将产生的反向偏置电压输出到外部电路，并且背偏置电压传感器。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式