公开(公告)号：US20140191732A1

公开(公告)日：2014-07-10

申请号：US13871286

申请日：2013-04-26

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Pei Kai Tseng ,  Chien Fu Tang ,  Isaac Y. Chen

IPC: H02J7/00

CPC classification number: H02M1/36 ,  H02J7/0016 ,  H02J7/345 ,  H02M3/07

Abstract: A bootstrap circuit includes: a charging voltage source; a charging diode, having an anode coupled to the charging voltage source; a high-voltage transistor, having a control terminal defined as a first connecting node and a channel coupled between a cathode of the charging diode and a bootstrap capacitor; a logic control circuit, having a first and a second logic outputs, and a logic input for receiving a charging command; a high-voltage control transistor, having a control terminal defined as a second connecting node and a channel coupled between charging voltage source and the first connecting node; a cut-off resistor, coupled between the first and the second connecting nodes; a charging control transistor, having a channel coupled between the second connecting node and a ground terminal, and a control terminal coupled to the second logic output; a control capacitor, coupled between the first connecting node and the first logic output.

Abstract translation: 引导电路包括：充电电压源; 充电二极管，具有耦合到所述充电电压源的阳极; 具有被定义为第一连接节点的控制端子和耦合在充电二极管的阴极和自举电容器之间的通道的高压晶体管; 具有第一和第二逻辑输出的逻辑控制电路和用于接收充电命令的逻辑输入; 高压控制晶体管，其具有被定义为第二连接节点的控制端子和耦合在充电电压源与第一连接节点之间的通道; 截止电阻器，耦合在所述第一和第二连接节点之间; 具有耦合在第二连接节点和接地端子之间的通道的充电控制晶体管和耦合到第二逻辑输出的控制端子; 耦合在第一连接节点和第一逻辑输出之间的控制电容器。

公开(公告)号：US09270186B2

公开(公告)日：2016-02-23

申请号：US14482882

申请日：2014-09-10

Applicant: RICHTEK TECHNOLOGY CORP

Inventor： Chuh Ching Lee ,  Chien Fu Tang ,  Chun Shih Huang

IPC: H02M3/335 ,  H02M3/337 ,  H02M3/34 ,  H02M3/338

CPC classification number: H02M3/33523 ,  H02M3/335 ,  H02M3/337 ,  H02M3/338 ,  H02M3/34 ,  H02M2001/0009 ,  H02M2001/0019 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A voltage converting controller, in which when an output current increases from a first current value to a second current value, the voltage converting controller temporarily sets a control frequency to a maximum frequency value; and after a period of time, sets the control frequency to a target control frequency corresponding to the second current value. In addition, when the output current increases from the first current value to the second current value, the voltage converting controller temporarily sets a secondary-side output voltage to an transient output value; and after a period of time, sets a steady state value of the secondary-side output voltage to an output voltage steady state value corresponding to the second current value.

Abstract translation: 一种电压转换控制器，其中当输出电流从第一电流值增加到第二电流值时，所述电压转换控制器将控制频率临时设置为最大频率值; 并且在一段时间之后，将控制频率设置为对应于第二电流值的目标控制频率。 此外，当输出电流从第一电流值增加到第二电流值时，电压转换控制器暂时将次级侧输出电压设定为瞬态输出值; 并且经过一段时间后，将次级侧输出电压的稳态值设定为对应于第二电流值的输出电压稳定值。

公开(公告)号：US20150372602A1

公开(公告)日：2015-12-24

申请号：US14482882

申请日：2014-09-10

Applicant: RICHTEK TECHNOLOGY CORP

Inventor： Chuh Ching Lee ,  Chien Fu Tang ,  Chun Shih Huang

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M3/335 ,  H02M3/337 ,  H02M3/338 ,  H02M3/34 ,  H02M2001/0009 ,  H02M2001/0019 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A voltage converting controller, in which when an output current increases from a first current value to a second current value, the voltage converting controller temporarily sets a control frequency to a maximum frequency value; and after a period of time, sets the control frequency to a target control frequency corresponding to the second current value. In addition, when the output current increases from the first current value to the second current value, the voltage converting controller temporarily sets a secondary-side output voltage to an transient output value; and after a period of time, sets a steady state value of the secondary-side output voltage to an output voltage steady state value corresponding to the second current value.

Abstract translation: 一种电压转换控制器，其中当输出电流从第一电流值增加到第二电流值时，所述电压转换控制器将控制频率临时设置为最大频率值; 并且在一段时间之后，将控制频率设置为对应于第二电流值的目标控制频率。 此外，当输出电流从第一电流值增加到第二电流值时，电压转换控制器暂时将次级侧输出电压设定为瞬态输出值; 并且经过一段时间后，将次级侧输出电压的稳态值设定为对应于第二电流值的输出电压稳定值。

公开(公告)号：US09093914B2

公开(公告)日：2015-07-28

申请号：US13871286

申请日：2013-04-26

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Pei Kai Tseng ,  Chien Fu Tang ,  Isaac Y. Chen

IPC: H02J7/00 ,  H02M1/36 ,  H02M3/07 ,  H02J7/34

CPC classification number: H02M1/36 ,  H02J7/0016 ,  H02J7/345 ,  H02M3/07

Abstract: A bootstrap circuit includes: a charging voltage source; a charging diode, having an anode coupled to the charging voltage source; a high-voltage transistor, having a control terminal defined as a first connecting node and a channel coupled between a cathode of the charging diode and a bootstrap capacitor; a logic control circuit, having a first and a second logic outputs, and a logic input for receiving a charging command; a high-voltage control transistor, having a control terminal defined as a second connecting node and a channel coupled between charging voltage source and the first connecting node; a cut-off resistor, coupled between the first and the second connecting nodes; a charging control transistor, having a channel coupled between the second connecting node and a ground terminal, and a control terminal coupled to the second logic output; a control capacitor, coupled between the first connecting node and the first logic output.

Abstract translation: 引导电路包括：充电电压源; 充电二极管，具有耦合到所述充电电压源的阳极; 具有被定义为第一连接节点的控制端子和耦合在充电二极管的阴极和自举电容器之间的通道的高压晶体管; 具有第一和第二逻辑输出的逻辑控制电路和用于接收充电命令的逻辑输入; 高压控制晶体管，其具有被定义为第二连接节点的控制端子和耦合在充电电压源与第一连接节点之间的通道; 截止电阻器，耦合在所述第一和第二连接节点之间; 具有耦合在第二连接节点和接地端子之间的通道的充电控制晶体管和耦合到第二逻辑输出的控制端子; 耦合在第一连接节点和第一逻辑输出之间的控制电容器。

公开(公告)号：US20140226372A1

公开(公告)日：2014-08-14

申请号：US13869684

申请日：2013-04-24

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Chien Fu Tang ,  Isaac Y. Chen ,  Jiun Hung Pan ,  Yung Chih Lai ,  Jyun Che Ho

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M3/158 ,  H02M2001/0009

Abstract: A voltage converter circuit, includes: a power switch for generating a pulse-width-modulation (PWM) signal to drive a current load, wherein the PWM signal toggles between a first level and a second level; a sensing pin, receiving a first sensing signal when the PWM signal is at the first level, and receiving a second sensing signal when the PWM signal is at the second level; a parameter sampling and setting unit, having an input terminal coupling to the sensing pin, generating a default current or a default voltage on the sensing pin and sampling the second sensing signal to generate a sampling signal when the PWM signal is at the second level, and holding the sampling signal to set a parameter of the voltage converter circuit when the PWM signal is at the first level.

Abstract translation: 一种电压转换器电路，包括：用于产生脉宽调制（PWM）信号以驱动电流负载的电源开关，其中所述PWM信号在第一电平和第二电平之间切换; 感测引脚，当PWM信号处于第一电平时接收第一感测信号，以及当PWM信号处于第二电平时接收第二感测信号; 参数采样和设置单元，具有耦合到感测引脚的输入端，在感测引脚上产生默认电流或默认电压，并且在PWM信号处于第二电平时采样第二感测信号以产生采样信号， 并且当PWM信号处于第一电平时，保持采样信号以设置电压转换器电路的参数。