公开(公告)号：US20160344290A1

公开(公告)日：2016-11-24

申请号：US14829655

申请日：2015-08-19

申请人： Muh-Rong Yang ,  Well-Chen Chua ,  Mao-Chuan Chien ,  Chi-Chien Lin

发明人： Muh-Rong Yang ,  Well-Chen Chua ,  Mao-Chuan Chien ,  Chi-Chien Lin

IPC分类号： H02M3/158 ,  G01R15/14 ,  G01R19/00

CPC分类号： G01R15/146 ,  G01R19/0092 ,  G01R19/2509 ,  H02M3/156 ,  H02M3/158 ,  H02M3/1588 ,  H02M2001/0009

摘要： A current sensing module and a power conversion apparatus and an electronic apparatus using the same are provided. The current sensing module is suitable for detecting a first load current flowing through a first load. The current sensing module includes a sampling stage circuit and an output stage circuit. The sampling stage circuit couples across the first load and selectively exchanges coupling nodes between the sampling stage circuit and the first load by a multiplex switching means, so as to sample the first load current flowing along a first direction or a second direction, and thus generate a sampling signal. The output stage circuit is coupled to the sampling stage circuit and switches coupling nodes between the output stage circuit and the output terminal of the sampling stage circuit, so as to generate a current indication signal indicating the magnitude of the first load current according to the sampling signal.

摘要翻译： 提供了一种电流感测模块和电力转换装置以及使用它的电子设备。 电流检测模块适用于检测流经第一负载的第一负载电流。 电流检测模块包括采样级电路和输出级电路。 采样级电路跨越第一负载耦合，并通过多路开关装置选择性地交换采样级电路和第一负载之间的耦合节点，以便对沿着第一方向或第二方向流动的第一负载电流进行采样，从而产生 采样信号。 输出级电路耦合到采样级电路并切换输出级电路和采样级电路的输出端之间的耦合节点，以便根据采样产生指示第一负载电流大小的电流指示信号 信号。

公开(公告)号：US07906945B2

公开(公告)日：2011-03-15

申请号：US12271939

申请日：2008-11-17

申请人： Shun-Hau Kao ,  Mao-Chuan Chien

发明人： Shun-Hau Kao ,  Mao-Chuan Chien

IPC分类号： G05F1/10 ,  H02M7/10

CPC分类号： G05F1/10 ,  H02M1/36 ,  H02M3/07 ,  Y10S323/901

摘要： A soft-start voltage circuit includes an operational amplifier, a first and a second capacitors, a first and a second switches, and a voltage level shifter. The operational amplifier includes a positive end, a negative end, and an output end coupled to the negative end of the operational amplifier for outputting the soft-start voltage. The voltage level shifter is coupled between the first capacitor and the positive end of the operational amplifier for shifting a level of the voltage on the first capacitor. The first switch is coupled between the first and the second capacitors for coupling the first and the second capacitors according to the clock. The second switch is coupled between the second capacitor and the negative end of the operational amplifier for coupling the second capacitor and the negative end of the operational amplifier according to the inverted clock.

摘要翻译： 软启动电压电路包括运算放大器，第一和第二电容器，第一和第二开关以及电压电平移位器。 运算放大器包括正端，负端和耦合到运算放大器的负端的输出端，用于输出软启动电压。 电压电平移位器耦合在第一电容器和运算放大器的正极之间，用于移位第一电容器上的电压电平。 第一开关耦合在第一和第二电容器之间，用于根据时钟耦合第一和第二电容器。 第二开关耦合在第二电容器和运算放大器的负端之间，用于根据反相时钟耦合第二电容器和运算放大器的负端。

公开(公告)号：US20100073071A1

公开(公告)日：2010-03-25

申请号：US12275228

申请日：2008-11-21

申请人： Mao-Chuan Chien ,  Shun-Hau Kao

发明人： Mao-Chuan Chien ,  Shun-Hau Kao

IPC分类号： H01L37/00

CPC分类号： G05D23/20 ,  G05D23/1909

摘要： An over-temperature detecting circuit includes a band-gap circuit for generating a temperature-drop-dependent voltage and a reference voltage not varying with the temperature, a transistor coupled to the band-gap circuit for generating a temperature-rise-dependent current according to the temperature-drop-dependent voltage, a resistor coupled to the transistor for generating a temperature-rise-dependent voltage according to the temperature-rise-dependent current, and a comparator coupled to the band-gap circuit and the resistor for generating a thermal shutdown signal according to the reference voltage and the temperature-rise-dependent voltage.

摘要翻译： 过温度检测电路包括用于产生温度依赖电压和不随温度变化的参考电压的带隙电路，耦合到带隙电路的晶体管，用于产生与温度相关的电流， 耦合到所述晶体管的电阻器，用于根据所述基于温度升高的电流产生与温度升高相关的电压;以及比较器，其耦合到所述带隙电路和所述电阻器，用于产生 热关断信号根据参考电压和温升依赖电压。

公开(公告)号：US20100060248A1

公开(公告)日：2010-03-11

申请号：US12271939

申请日：2008-11-17

申请人： Shun-Hau Kao ,  Mao-Chuan Chien

发明人： Shun-Hau Kao ,  Mao-Chuan Chien

IPC分类号： G05F1/00

CPC分类号： G05F1/10 ,  H02M1/36 ,  H02M3/07 ,  Y10S323/901

摘要： A soft-start voltage circuit includes an operational amplifier, a first and a second capacitors, a first and a second switches, and a voltage level shifter. The operational amplifier includes a positive end, a negative end, and an output end coupled to the negative end of the operational amplifier for outputting the soft-start voltage. The voltage level shifter is coupled between the first capacitor and the positive end of the operational amplifier for shifting a level of the voltage on the first capacitor. The first switch is coupled between the first and the second capacitors for coupling the first and the second capacitors according to the clock. The second switch is coupled between the second capacitor and the negative end of the operational amplifier for coupling the second capacitor and the negative end of the operational amplifier according to the inverted clock.

摘要翻译： 软启动电压电路包括运算放大器，第一和第二电容器，第一和第二开关以及电压电平移位器。 运算放大器包括正端，负端和耦合到运算放大器的负端的输出端，用于输出软启动电压。 电压电平移位器耦合在第一电容器和运算放大器的正极之间，用于移位第一电容器上的电压电平。 第一开关耦合在第一和第二电容器之间，用于根据时钟耦合第一和第二电容器。 第二开关耦合在第二电容器和运算放大器的负端之间，用于根据反相时钟耦合第二电容器和运算放大器的负端。

公开(公告)号：US20090189585A1

公开(公告)日：2009-07-30

申请号：US12203078

申请日：2008-09-02

申请人： HSIANG LIN HUANG ,  KENT HUANG ,  MAO CHUAN CHIEN ,  SHUN HAU KAO

发明人： HSIANG LIN HUANG ,  KENT HUANG ,  MAO CHUAN CHIEN ,  SHUN HAU KAO

IPC分类号： G05F1/62

CPC分类号： H02M3/156 ,  H02M1/32

摘要： A PWM controller for controlling a switching voltage regulator comprises a first comparator, a second comparator and a third comparator. The first comparator is configured to detect voltages of a first node and a second node so as to determine whether to stop the PWM controller. The PWM controller is stopped if a first potential is lower than a threshold, and the first potential derives from the voltage of the first node by a level shift of a first voltage difference. The second comparator is configured to detect the voltage of the first node and then to compare the voltage with a power reference voltage so as to determine whether the PWM controller receives necessary power. The third comparator is configured to compare the voltage of the second node with an enable reference voltage so as to determine whether to disable the PWN controller.

摘要翻译： 用于控制开关电压调节器的PWM控制器包括第一比较器，第二比较器和第三比较器。 第一比较器被配置为检测第一节点和第二节点的电压，以便确定是否停止PWM控制器。 如果第一电位低于阈值，则PWM控制器停止，并且第一电位从第一节点的电压导出第一电压差的电平偏移。 第二比较器被配置为检测第一节点的电压，然后将电压与功率参考电压进行比较，以便确定PWM控制器是否接收必要的功率。 第三比较器被配置为将第二节点的电压与使能参考电压进行比较，以便确定是否禁用PWN控制器。

公开(公告)号：US20100026254A1

公开(公告)日：2010-02-04

申请号：US12236064

申请日：2008-09-23

申请人： SHUN HAU KAO ,  MAO CHUAN CHIEN

发明人： SHUN HAU KAO ,  MAO CHUAN CHIEN

IPC分类号： G05F1/573

CPC分类号： G05F1/573

摘要： An over current protection circuit for low dropout regulator comprises a sense transistor, a sense resistor, an operational amplifier and a first transistor. The sense transistor senses the current flowing through the power transistor. The sense resistor is coupled to the sense transistor and shares the same current flowing through the sense transistor. The operational amplifier outputs a control signal according to the voltage across the sense resistor and a reference voltage. The first transistor controls the power transistor according to the control signal.

摘要翻译： 用于低压差调节器的过电流保护电路包括检测晶体管，检测电阻器，运算放大器和第一晶体管。 感测晶体管感测流过功率晶体管的电流。 感测电阻器耦合到感测晶体管并且共享流过感测晶体管的相同电流。 运算放大器根据检测电阻上的电压和参考电压输出控制信号。 第一晶体管根据控制信号控制功率晶体管。

公开(公告)号：US07612549B1

公开(公告)日：2009-11-03

申请号：US12270843

申请日：2008-11-13

申请人： Shun-Hau Kao ,  Mao-Chuan Chien

发明人： Shun-Hau Kao ,  Mao-Chuan Chien

IPC分类号： G05F1/00

CPC分类号： G05F1/575

摘要： An LDO with fast current limit includes P-type transistor, an error amplifier, an adjustable reference voltage circuit for generating an adjustable reference voltage, and an N-type transistor. The P-type transistor includes a first end coupled to the input voltage source, a second end for outputting an output voltage source, and a control end for receiving a current control signal in order to control the current of the output voltage source. The error amplifier generates the current control signal according to the reference voltage and a voltage divided from the output voltage source. N-type transistor includes a first end coupled to the output end of the error amplifier, a second end coupled to the input voltage source, and a control end for receiving the adjustable reference voltage. When the N-type transistor is turned on, the voltage of the current control signal is clamped by the adjustable reference voltage.

摘要翻译： 具有快速电流限制的LDO包括P型晶体管，误差放大器，用于产生可调参考电压的可调参考电压电路和N型晶体管。 P型晶体管包括耦合到输入电压源的第一端，用于输出输出电压源的第二端和用于接收电流控制信号以控制输出电压源的电流的控制端。 误差放大器根据参考电压和从输出电压源划分的电压产生电流控制信号。 N型晶体管包括耦合到误差放大器的输出端的第一端，耦合到输入电压源的第二端和用于接收可调参考电压的控制端。 当N型晶体管导通时，电流控制信号的电压被可调参考电压钳位。

公开(公告)号：US20090167274A1

公开(公告)日：2009-07-02

申请号：US12203043

申请日：2008-09-02

申请人： MAO CHUAN CHIEN ,  KENT HUANG ,  HSIANG LIN HUANG ,  SHUN HAU KAO

发明人： MAO CHUAN CHIEN ,  KENT HUANG ,  HSIANG LIN HUANG ,  SHUN HAU KAO

IPC分类号： G05F1/62

CPC分类号： H02M1/32 ,  H02M1/36

摘要： A PWM controller applied to a switching voltage regulator comprises a disabling circuit, a power-sensing circuit, an over-current protection circuit and a PWM logic circuit. The disabling circuit is connected to an external frequency compensation circuit for detecting a voltage used to stop the operation of the PWM controller. The power-sensing circuit is configured to stop the operation of the PWM controller if the input voltage of the high side switch is lower than a threshold. The over-current protection circuit is configured to monitor current flowing through the output circuit, and the over-current protection circuit generates an over-current protection signal when the current exceeds a threshold. The PWM logic circuit is connected to the outputs of the disabling circuit, power-sensing circuit and over-current protection circuit.

摘要翻译： 应用于开关电压调节器的PWM控制器包括禁用电路，功率感测电路，过电流保护电路和PWM逻辑电路。 禁用电路连接到外部频率补偿电路，用于检测用于停止PWM控制器的操作的电压。 功率检测电路被配置为如果高侧开关的输入电压低于阈值，则停止PWM控制器的操作。 过电流保护电路被配置为监视流过输出电路的电流，并且当电流超过阈值时，过电流保护电路产生过电流保护信号。 PWM逻辑电路连接到禁用电路，功率检测电路和过电流保护电路的输出。

公开(公告)号：US07456622B2

公开(公告)日：2008-11-25

申请号：US11783564

申请日：2007-04-10

申请人： Mao Chuan Chien ,  Chu Yu Chu ,  Yu Min Sun

发明人： Mao Chuan Chien ,  Chu Yu Chu ,  Yu Min Sun

IPC分类号： G05F1/575 ,  G05F1/618

CPC分类号： H02M3/1588 ,  H02M1/36 ,  Y02B70/1466

摘要： The low voltage circuit for starting up a synchronous step-up DC/DC converter, which connects to a voltage source through an inductor, includes a P-type power transistor, an N-type power transistor and a controller. The P-type power transistor includes a body diode, and one end of the P-type power transistor acts as a power source of an oscillator. The N-type power transistor connects the P-type power transistor in series, and both of the power transistors are not enabled at the same time. The oscillator electrically connects to the controller, which enables the P-type power transistor at initialization time, and enables the N-type power transistor a period after the initialization time.

公开(公告)号：US20080231386A1

公开(公告)日：2008-09-25

申请号：US11730159

申请日：2007-03-29

申请人： Mao Chuan Chien ,  Yu Min Sun ,  Chu Yu Chu

发明人： Mao Chuan Chien ,  Yu Min Sun ,  Chu Yu Chu

IPC分类号： H03L1/00

CPC分类号： H03L1/022 ,  G05F3/262 ,  H03K5/08 ,  H03K5/2481

摘要： The oscillation circuit includes an output current mirror, a P-N complementary current mirror, a P-type current mirror and an N-type current mirror. The P-N complementary current mirror has the same structure as the output current mirror but has current that is only 1/k times the current of the output current mirror, wherein k is greater than 1. The P-type current mirror connects to the P-N complementary current mirror, and has current that is m times the current of the P-N complementary current mirror, where m is greater than 1. The N-type current mirror has one end connected to the P-type current mirror and another end connected to the output current mirror. The N-type current mirror has current that is n times the current of the P-type current mirror, where m × n k ≥ 1 , and n is greater than 1.

摘要翻译： 振荡电路包括输出电流镜，P-N互补电流镜，P型电流镜和N型电流镜。 PN互补电流镜具有与输出电流镜相同的结构，但具有仅为输出电流镜的电流的1 / k倍的电流，其中k大于1.P型电流镜连接到PN互补 电流镜，并且具有与PN互补电流镜的电流m倍的电流，其中m大于1.N型电流镜的一端连接到P型电流镜，另一端连接到输出 电流镜。 N型电流镜的电流是P型电流镜的电流的n倍，其中 $ m = 1 ， ，n大于1。 PDF内容 加载中... 扫码加群 $