-
公开(公告)号：US20100244956A1
公开(公告)日：2010-09-30
申请号：US12795451
申请日：2010-06-07
申请人： Vikas Manan
发明人： Vikas Manan
IPC分类号： H03F1/00
CPC分类号： H03F3/45085 , H01S5/0427 , H03F2203/45612 , H03F2203/45702
摘要： A current control mechanism for use in low power consumption circuits with limited headroom includes a differential transistor pair from whose collectors a current output is taken. The current output is a function of a reference voltage provided at bases of a reference transistor pair having emitters that are coupled to the bases of the differential pair. The reference voltage is controlled by a pair of control transistors that control current through a load. A pair of tracking transistors can be provided to track supply voltage. A single-ended topology can also be implemented.
摘要翻译： 用于具有有限余量的低功耗电路的电流控制机构包括从其集电极获取电流输出的差分晶体管对。 电流输出是在具有耦合到差分对的基极的发射极的参考晶体管对的基极处提供的参考电压的函数。 参考电压由控制通过负载的电流的一对控制晶体管控制。 可以提供一对跟踪晶体管来跟踪电源电压。 也可以实现单端拓扑。
-
公开(公告)号：US08054128B2
公开(公告)日：2011-11-08
申请号：US12795451
申请日：2010-06-07
申请人： Vikas Manan
发明人： Vikas Manan
CPC分类号： H03F3/45085 , H01S5/0427 , H03F2203/45612 , H03F2203/45702
摘要： A current control mechanism for use in low power consumption circuits with limited headroom includes a differential transistor pair from whose collectors a current output is taken. The current output is a function of a reference voltage provided at bases of a reference transistor pair having emitters that are coupled to the bases of the differential pair. The reference voltage is controlled by a pair of control transistors that control current through a load. A pair of tracking transistors can be provided to track supply voltage. A single-ended topology can also be implemented.
摘要翻译： 用于具有有限余量的低功耗电路的电流控制机构包括从其集电极获取电流输出的差分晶体管对。 电流输出是在具有耦合到差分对的基极的发射极的参考晶体管对的基极处提供的参考电压的函数。 参考电压由控制通过负载的电流的一对控制晶体管控制。 可以提供一对跟踪晶体管来跟踪电源电压。 也可以实现单端拓扑。
-
公开(公告)号：US08008904B1
公开(公告)日：2011-08-30
申请号：US12184189
申请日：2008-07-31
申请人： Vikas Manan
发明人： Vikas Manan
CPC分类号： G05F3/262
摘要： A current supply circuit provides current that is substantially invariant with voltage supply and temperature changes. The current supply circuit has an input node connectable to a voltage supply and an output node operable to provide an output current. The current supply circuit includes a current source circuit coupled to a reference voltage node and configured to provide the output current at the output node, wherein a voltage at the reference voltage node controls current output of the current source circuit. The current supply circuit also includes a reference-setting circuit coupled to the reference voltage node and operable to establish a reference current level of the current source circuit, a common-emitter circuit coupled to the input node, and an emitter-follower circuit coupled to the input node, the emitter-follower circuit having an input coupled to an output of the common-emitter circuit and an output coupled to the reference voltage node.
摘要翻译： 电流供应电路提供与电压供应和温度变化基本上不变的电流。 电流供应电路具有可连接到电压源的输入节点和可操作以提供输出电流的输出节点。 电流源电路包括耦合到参考电压节点并被配置为在输出节点处提供输出电流的电流源电路，其中参考电压节点处的电压控制电流源电路的电流输出。 电流供应电路还包括参考设置电路，其耦合到参考电压节点并且可操作以建立电流源电路的参考电流电平，耦合到输入节点的共射极电路，以及耦合到 输入节点，射极跟随器电路具有耦合到共发射极电路的输出的输入端和耦合到参考电压节点的输出。
-
公开(公告)号：US07760781B1
公开(公告)日：2010-07-20
申请号：US12150615
申请日：2008-04-29
申请人： Vikas Manan
发明人： Vikas Manan
CPC分类号： H03F3/45085 , H01S5/0427 , H03F2203/45612 , H03F2203/45702
摘要： A current control mechanism for use in low power consumption circuits with limited headroom includes a differential transistor pair from whose collectors a current output is taken. The current output is a function of a reference voltage provided at bases of a reference transistor pair having emitters that are coupled to the bases of the differential pair. The reference voltage is controlled by a pair of control transistors that control current through a load. A pair of tracking transistors can be provided to track supply voltage. A single-ended topology can also be implemented.
-
-
-
搜索结果
4 条记录 (耗时 0.008 秒)
