公开(公告)号：US08854119B2

公开(公告)日：2014-10-07

申请号：US13924775

申请日：2013-06-24

Applicant: STMicroelectronics R&D Co. Ltd. (Shanghai)

Inventor： Ming Jiang ,  Jackson Ding

IPC: H02M3/07

CPC classification number: H02M3/07 ,  H02M2003/078

Abstract: A circuit includes a charge pump, a first level shifter, a second level shifter, a voltage follower and a current mirror. The charge pump is configured to generate a voltage difference between the input node and the output node. The first level shifter is coupled to the charge pump output and configured to apply a first voltage variation to the charge pump output in response to a bias current. The second level shifter is coupled to the input node and configured to apply a second voltage variation to the charge pump input. The voltage follower is configured to equalize outputs from the first and second level shifters and provide a difference current which is multiplied by the current multiplier to generate a charging current applied to the charge pump.

Abstract translation: 电路包括电荷泵，第一电平移位器，第二电平移位器，电压跟随器和电流镜。 电荷泵被配置为在输入节点和输出节点之间产生电压差。 第一电平移位器耦合到电荷泵输出并被配置为响应偏置电流向电荷泵输出施加第一电压变化。 第二电平移位器耦合到输入节点并被配置为向电荷泵输入施加第二电压变化。 电压跟随器被配置为对来自第一和第二电平移位器的输出进行均衡，并提供与电流乘法器相乘的差电流，以产生施加到电荷泵的充电电流。

公开(公告)号：US20140009220A1

公开(公告)日：2014-01-09

申请号：US13924775

申请日：2013-06-24

Applicant: STMicroelectronics R&D Co. Ltd. (Shanghai)

Inventor： Ming Jiang ,  Jackson Ding

IPC: H02M3/07

CPC classification number: H02M3/07 ,  H02M2003/078

Abstract: A circuit includes a charge pump, a first level shifter, a second level shifter, a voltage follower and a current mirror. The charge pump is configured to generate a voltage difference between the input node and the output node. The first level shifter is coupled to the charge pump output and configured to apply a first voltage variation to the charge pump output in response to a bias current. The second level shifter is coupled to the input node and configured to apply a second voltage variation to the charge pump input. The voltage follower is configured to equalize outputs from the first and second level shifters and provide a difference current which is multiplied by the current multiplier to generate a charging current applied to the charge pump.

Abstract translation: 电路包括电荷泵，第一电平移位器，第二电平移位器，电压跟随器和电流镜。 电荷泵被配置为在输入节点和输出节点之间产生电压差。 第一电平移位器耦合到电荷泵输出并被配置为响应偏置电流向电荷泵输出施加第一电压变化。 第二电平移位器耦合到输入节点并被配置为向电荷泵输入施加第二电压变化。 电压跟随器被配置为对来自第一和第二电平移位器的输出进行均衡，并提供与电流乘法器相乘的差电流，以产生施加到电荷泵的充电电流。