公开(公告)号：US09831830B2

公开(公告)日：2017-11-28

申请号：US14831933

申请日：2015-08-21

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Alberto Valdes Garcia ,  Bodhisatwa Sadhu ,  Jahnavi Sharma

IPC: H03K17/04 ,  H03B5/12

CPC classification number: H03B5/1265 ,  H03B5/1206 ,  H03B5/1215 ,  H03B5/1231 ,  H03B2200/0062 ,  H03B2200/009

Abstract: A switched capacitor is provided. The switched capacitor includes a pair of parallel component stacks. Each stack is connected to a common top node and a common bottom node. Each stack includes a BJT. Each stack further includes a first resistor in series with the BJT and having a first side connected to a collector of the BJT at an intermediate node in a same one of the stacks and a second side connected to the common top node. Each stack also includes a capacitor having a first side connected to the intermediate node and a second side for providing an impedance. Each stack additionally includes a second resistor having a first side connected to a base of the BJT to prevent base-current surge in the BJT and a second side connected to a switch base control signal that selectively turns the BJT on or off.

公开(公告)号：US20180048264A1

公开(公告)日：2018-02-15

申请号：US15723841

申请日：2017-10-03

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Alberto Valdes Garcia ,  Bodhisatwa Sadhu ,  Jahnavi Sharma

IPC: H03B5/12

CPC classification number: H03B5/1265 ,  H03B5/1206 ,  H03B5/1215 ,  H03B5/1231 ,  H03B2200/0062 ,  H03B2200/009

Abstract: A switched capacitor is provided. The switched capacitor includes a pair of parallel component stacks. Each stack is connected to a common top node and a common bottom node. Each stack includes a BJT. Each stack further includes a first resistor in series with the BJT and having a first side connected to a collector of the BJT at an intermediate node in a same one of the stacks and a second side connected to the common top node. Each stack also includes a capacitor having a first side connected to the intermediate node and a second side for providing an impedance. Each stack additionally includes a second resistor having a first side connected to a base of the BJT to prevent base-current surge in the BJT and a second side connected to a switch base control signal that selectively turns the BJT on or off.

公开(公告)号：US10236825B2

公开(公告)日：2019-03-19

申请号：US15723841

申请日：2017-10-03

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Alberto Valdes Garcia ,  Bodhisatwa Sadhu ,  Jahnavi Sharma

IPC: H03B5/12

Abstract: A switched capacitor is provided. The switched capacitor includes a pair of parallel component stacks. Each stack is connected to a common top node and a common bottom node. Each stack includes a BJT. Each stack further includes a first resistor in series with the BJT and having a first side connected to a collector of the BJT at an intermediate node in a same one of the stacks and a second side connected to the common top node. Each stack also includes a capacitor having a first side connected to the intermediate node and a second side for providing an impedance. Each stack additionally includes a second resistor having a first side connected to a base of the BJT to prevent base-current surge in the BJT and a second side connected to a switch base control signal that selectively turns the BJT on or off.

公开(公告)号：US20170054412A1

公开(公告)日：2017-02-23

申请号：US14831933

申请日：2015-08-21

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Alberto Valdes Garcia ,  Bodhisatwa Sadhu ,  Jahnavi Sharma

IPC: H03B5/12

CPC classification number: H03B5/1265 ,  H03B5/1206 ,  H03B5/1215 ,  H03B5/1231 ,  H03B2200/0062 ,  H03B2200/009

Abstract: A switched capacitor is provided. The switched capacitor includes a pair of parallel component stacks. Each stack is connected to a common top node and a common bottom node. Each stack includes a BJT. Each stack further includes a first resistor in series with the BJT and having a first side connected to a collector of the BJT at an intermediate node in a same one of the stacks and a second side connected to the common top node. Each stack also includes a capacitor having a first side connected to the intermediate node and a second side for providing an impedance. Each stack additionally includes a second resistor having a first side connected to a base of the BJT to prevent base-current surge in the BJT and a second side connected to a switch base control signal that selectively turns the BJT on or off.

Abstract translation: 提供开关电容器。 开关电容器包括一对并联组件堆叠。 每个堆栈连接到公共顶部节点和公共底部节点。 每个堆栈包括一个BJT。 每个堆叠还包括与BJT串联的第一电阻器，并且具有在同一个堆叠中的中间节点处连接到BJT的集电极的第一侧，以及连接到公共顶部节点的第二侧。 每个堆叠还包括具有连接到中间节点的第一侧的电容器和用于提供阻抗的第二侧。 每个堆叠还包括第二电阻器，其具有连接到BJT的基极的第一侧，以防止BJT中的基极电流浪涌，以及连接到选择性地使BJT打开或关闭的开关基极控制信号的第二侧。