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1. 发明授权

US10234487B2 Accurate current sensing 有权
公开(公告)号：US10234487B2
公开(公告)日：2019-03-19
申请号：US14864966
申请日：2015-09-25
申请人： Dialog Semiconductor (UK) Limited
发明人： Nicolo Nizza , Danilo Gerna
IPC分类号： G01R19/00
摘要： A current sense circuit for a pass transistor is described. The circuit comprises a sense transistor having input and control ports that are coupled to input and control ports respectively of the pass transistor. The circuit comprises a differential amplifier comprising a differential input and output. An output port of the pass transistor is coupled to a first port of the differential input and an output port of the sense transistor is coupled to a second port of the differential input. The differential amplifier comprises a first sub-amplifier and a second sub-amplifier that are arranged in parallel and which are operated in an auto-zero phase and in an amplification phase in an alternating manner, and which are operated in the auto-zero phase in a mutually exclusive manner. The output of the differential amplifier is used to control voltage drops across the sense transistor and the pass transistor.

2. 发明授权

US10041983B2 VDS equalizer offset compensation for a current sense circuit 有权
公开(公告)号：US10041983B2
公开(公告)日：2018-08-07
申请号：US14838266
申请日：2015-08-27
申请人： Dialog Semiconductor (UK) Limited
发明人： Danilo Gerna , Stefano Scaldaferri , Nicolo Nizza
IPC分类号： G01R19/00 , H03F3/45
摘要： A current sense circuit for a pass transistor is described. The current sense circuit comprises a sense transistor, a differential amplifier comprising a differential input and a differential output, and a differential difference amplifier, referred to as DD amplifier, comprising a main differential input, an auxiliary differential input and an output; wherein the differential output of the differential amplifier is coupled to the auxiliary differential input of the DD amplifier; wherein the output port of the pass transistor is coupled to a first port of the main differential input and wherein the output port of the sense transistor is coupled to a second port of the main differential input. The output of the DD amplifier is used to control a voltage drop across the sense transistor and the pass transistor.

3. 发明申请

US20160266178A1 VDS Equalizer Offset Compensation for a Current Sense Circuit 审中-公开
标题翻译：用于电流检测电路的VDS均衡器偏移补偿
公开(公告)号：US20160266178A1
公开(公告)日：2016-09-15
申请号：US14838266
申请日：2015-08-27
申请人： Dialog Semiconductor (UK) Limited
发明人： Danilo Gerna , Stefano Scaldaferri , Nicolo Nizza
IPC分类号： G01R19/25 , G01R19/15 , G01R19/00
CPC分类号： G01R19/0092 , H03F3/45475 , H03F2203/45551 , H03F2203/45634 , H03K2217/0027 , H03K2217/0054
摘要： A current sense circuit for a pass transistor is described. The current sense circuit comprises a sense transistor, a differential amplifier comprising a differential input and a differential output, and a differential difference amplifier, referred to as DD amplifier, comprising a main differential input, an auxiliary differential input and an output; wherein the differential output of the differential amplifier is coupled to the auxiliary differential input of the DD amplifier; wherein the output port of the pass transistor is coupled to a first port of the main differential input and wherein the output port of the sense transistor is coupled to a second port of the main differential input. The output of the DD amplifier is used to control a voltage drop across the sense transistor and the pass transistor.
摘要翻译：描述了用于传输晶体管的电流感测电路。电流检测电路包括检测晶体管，包括差分输入和差分输出的差分放大器，以及称为DD放大器的差分差分放大器，包括主差分输入，辅助差分输入和输出; 其中差分放大器的差分输出耦合到DD放大器的辅助差分输入; 其中所述传输晶体管的输出端口耦合到所述主差分输入的第一端口，并且其中所述检测晶体管的输出端口耦合到所述主差分输入的第二端口。 DD放大器的输出用于控制感测晶体管和传输晶体管两端的电压降。

4. 发明授权

US10177659B2 Nulling reverse recovery charge in DC/DC power converters 有权
公开(公告)号：US10177659B2
公开(公告)日：2019-01-08
申请号：US15356894
申请日：2016-11-21
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena , Nicolo Nizza , Danilo Gerna , Enrico Pardi , Stefano Scaldaferri , Alexandre Morello , Tommaso Baldetti
IPC分类号： H02M3/158 , H02M3/156 , H02M7/48 , H02M1/38 , H02M1/00
摘要： A switching mode power converter circuit and a method are presented. The circuit comprises a first transistor switch and a second transistor switch coupled in series between an input voltage level and ground. There is a control circuit for controlling switching operation of the first transistor switch and the second transistor switch. There is a detection circuit for sensing a voltage at an intermediate node arranged between the first transistor switch and the second transistor switch, for deriving an indication of a slope of the sensed voltage, and for generating a switching control signal for the control circuit on the basis of the derived indication of the slope of the sensed voltage. The control circuit sets a first timing for activating the first transistor switch and/or a second timing for activating the second transistor switch on the basis of the switching control signal.

5. 发明申请

US20180026538A1 Nulling Reverse Recovery Charge in DC/DC Power Converters 审中-公开
公开(公告)号：US20180026538A1
公开(公告)日：2018-01-25
申请号：US15356894
申请日：2016-11-21
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena , Nicolo Nizza , Danilo Gerna , Enrico Pardi , Stefano Scaldaferri , Alexandre Morello , Tommaso Baldetti
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M1/38 , H02M3/156 , H02M3/1584 , H02M3/1588 , H02M7/48 , H02M2001/0051 , Y02B70/1466 , Y02B70/1491
摘要： A switching mode power converter circuit and a method are presented. The circuit comprises a first transistor switch and a second transistor switch coupled in series between an input voltage level and ground. There is a control circuit for controlling switching operation of the first transistor switch and the second transistor switch. There is a detection circuit for sensing a voltage at an intermediate node arranged between the first transistor switch and the second transistor switch, for deriving an indication of a slope of the sensed voltage, and for generating a switching control signal for the control circuit on the basis of the derived indication of the slope of the sensed voltage. The control circuit sets a first timing for activating the first transistor switch and/or a second timing for activating the second transistor switch on the basis of the switching control signal.

6. 发明申请

US20160266175A1 Accurate Current Sensing 审中-公开
标题翻译：精确电流检测
公开(公告)号：US20160266175A1
公开(公告)日：2016-09-15
申请号：US14864966
申请日：2015-09-25
申请人： Dialog Semiconductor (UK) Limited
发明人： Nicolo Nizza , Danilo Gerna
IPC分类号： G01R19/00 , H03K17/687
CPC分类号： G01R19/0092 , H03K2217/0027 , H03K2217/0054
摘要： A current sense circuit for a pass transistor is described. The circuit comprises a sense transistor having input and control ports that are coupled to input and control ports respectively of the pass transistor. The circuit comprises a differential amplifier comprising a differential input and output. An output port of the pass transistor is coupled to a first port of the differential input and an output port of the sense transistor is coupled to a second port of the differential input. The differential amplifier comprises a first sub-amplifier and a second sub-amplifier that are arranged in parallel and which are operated in an auto-zero phase and in an amplification phase in an alternating manner, and which are operated in the auto-zero phase in a mutually exclusive manner. The output of the differential amplifier is used to control voltage drops across the sense transistor and the pass transistor.
摘要翻译：描述了用于传输晶体管的电流感测电路。该电路包括具有输入和控制端口的检测晶体管，该输入和控制端口分别耦合到传输晶体管的输入和控制端口。电路包括差分放大器，差分放大器包括差分输入和输出。传输晶体管的输出端口耦合到差分输入的第一端口，并且感测晶体管的输出端口耦合到差分输入的第二端口。差分放大器包括并联布置的第一子放大器和第二子放大器，它们以自动零相位和交替方式在放大阶段中操作，并且在自动调零阶段以相互排斥的方式。差分放大器的输出用于控制感测晶体管和传输晶体管两端的电压降。

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