公开(公告)号：US20070252636A1

公开(公告)日：2007-11-01

申请号：US11822169

申请日：2007-07-03

申请人： Liang-Pin Tai ,  Jiun-Chiang Chen

发明人： Liang-Pin Tai ,  Jiun-Chiang Chen

IPC分类号： H03K17/687

CPC分类号： H03K17/6871 ,  H03K17/693

摘要： A switching circuit uses multiple common-drain JFETs to serve as the low-side switches of the switching circuit, and each of the low-side JFET is coupled between a high-side switch and a power node. Since a JFET can endure high voltage at both drain side and source side, and has good heat dissipation capability at drain side, the drain of the low-side JFET is coupled to the power node to enhance the heat dissipation capability and accordingly, all the low-side JFETs are allowed to be packaged in a same package to reduce the PCB layout area.

公开(公告)号：US20070241733A1

公开(公告)日：2007-10-18

申请号：US11583012

申请日：2006-10-19

申请人： Jiun-Chiang Chen ,  Liang-Pin Tai

发明人： Jiun-Chiang Chen ,  Liang-Pin Tai

IPC分类号： G05F1/00

CPC分类号： H02M3/156 ,  H02M3/1584 ,  H02M2001/0032 ,  Y02B70/16

摘要： A control circuit and method are provided to generate a modulation signal to operate a power stage in a DC/DC PWM converter such that the DC/DC PWM converter is controlled to operate with high switching frequency in light load stead state, once load transient happens, it still operates with high switching frequency for good transient response, and in heavy load stead state, it is controlled to operate with low switching frequency for good efficiency.

摘要翻译： 提供控制电路和方法来产生调制信号以在DC / DC PWM转换器中操作功率级，使得DC / DC PWM转换器被控制为在轻负载状态下以高开关频率工作，一旦发生负载瞬变 ，它仍然以高开关频率运行，具有良好的瞬态响应，并且在重负载状态下，它被控制为以低开关频率工作以获得高效率。

公开(公告)号：US07180278B2

公开(公告)日：2007-02-20

申请号：US11090179

申请日：2005-03-28

申请人： Liang-Pin Tai ,  Jiun-Chiang Chen

发明人： Liang-Pin Tai ,  Jiun-Chiang Chen

IPC分类号： G05F1/40

CPC分类号： H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

摘要： A real current sense apparatus for a DC-to-DC converter uses a current mirror composed by two JFETs to mirror the output current of the converter to generate a temperature-independent mirror current to further generate a current sense signal. Due to the temperature-independence of the mirror current, the current sense signal is also temperature-independent.

摘要翻译： 用于DC-DC转换器的实际电流检测装置使用由两个JFET组成的电流镜来反映转换器的输出电流，以产生独立于温度的反射镜电流，以进一步产生电流检测信号。 由于镜电流的温度独立性，电流检测信号也与温度无关。

公开(公告)号：US07274174B2

公开(公告)日：2007-09-25

申请号：US11229587

申请日：2005-09-20

申请人： Hung-I Wang ,  Jiun-Chiang Chen

发明人： Hung-I Wang ,  Jiun-Chiang Chen

IPC分类号： G05F1/613

CPC分类号： H02M3/156 ,  H02M2001/0009 ,  Y10S323/907

摘要： In a voltage regulator including an inductor current flowing through a sense element with a first temperature coefficient, and a current sense circuit for generating a current sense signal related to the first temperature coefficient by sensing the inductor current from the sense element, a temperature compensation device and method determines a second temperature coefficient according to the first temperature coefficient and temperature variation, and produces a compensation signal with the second temperature coefficient to compensate variations in the current sense signal caused by the first temperature coefficient.

摘要翻译： 在包括流过具有第一温度系数的感测元件的电感器电流的电压调节器和用于通过感测来自感测元件的电感器电流来产生与第一温度系数相关的电流感测信号的电流感测电路的温度补偿装置 并根据第一温度系数和温度变化确定第二温度系数，并产生具有第二温度系数的补偿信号，以补偿由第​​一温度系数引起的电流感测信号的变化。

公开(公告)号：US07233133B2

公开(公告)日：2007-06-19

申请号：US11114060

申请日：2005-04-26

申请人： Liang-Pin Tai ,  Jiun-Chiang Chen

发明人： Liang-Pin Tai ,  Jiun-Chiang Chen

IPC分类号： G05F1/00

CPC分类号： H02M3/1584 ,  H02M2001/007

摘要： A two-step DC-to-DC converter comprises a first converter stage for converting a first voltage to a second voltage, and a second converter stage for converting the second voltage to an output voltage. The first converter stage uses a MOSFET or normally-off JFET to serve as a high-side switch, and the second converter stage comprises a multi-phase modulator using a normally-on JFET to serve as a high-side switch, thereby improving the efficiency of the two-step DC-to-DC converter.

摘要翻译： 两级DC-DC转换器包括用于将第一电压转换为第二电压的第一转换器级和用于将第二电压转换为输出电压的第二转换级。 第一转换器级使用MOSFET或常关JFET作为高侧开关，第二转换器级包括使用常导JFET作为高侧开关的多相调制器，从而改善 两级DC-DC转换器的效率。

公开(公告)号：US20060061340A1

公开(公告)日：2006-03-23

申请号：US11229587

申请日：2005-09-20

申请人： Hung-I Wang ,  Jiun-Chiang Chen

发明人： Hung-I Wang ,  Jiun-Chiang Chen

IPC分类号： G05F1/577

CPC分类号： H02M3/156 ,  H02M2001/0009 ,  Y10S323/907

摘要： In a voltage regulator including an inductor current flowing through a sense element with a first temperature coefficient, and a current sense circuit for generating a current sense signal related to the first temperature coefficient by sensing the inductor current from the sense element, a temperature compensation device and method determines a second temperature coefficient according to the first temperature coefficient and temperature variation, and produces a compensation signal with the second temperature coefficient to compensate variations in the current sense signal caused by the first temperature coefficient.

摘要翻译： 在包括流过具有第一温度系数的感测元件的电感器电流的电压调节器和用于通过感测来自感测元件的电感器电流来产生与第一温度系数相关的电流感测信号的电流感测电路的温度补偿装置 并根据第一温度系数和温度变化确定第二温度系数，并产生具有第二温度系数的补偿信号，以补偿由第​​一温度系数引起的电流感测信号的变化。

公开(公告)号：US20060049815A1

公开(公告)日：2006-03-09

申请号：US11220561

申请日：2005-09-08

申请人： Hsin-Hsin Ho ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Jiun-Chiang Chen

发明人： Hsin-Hsin Ho ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Jiun-Chiang Chen

IPC分类号： G05F1/40

CPC分类号： H02M3/158 ,  H02M2001/0019

摘要： In a voltage regulator including an error amplifier to generate a first signal related to an output voltage of the voltage regulator, a current sense circuit to generate a second signal related to an inductor current of the voltage regulator, and a PWM comparator to generate a PWM signal in response to the first and second signals to regulate the output voltage, a current feed-through adaptive voltage position control comprises supplying ramp signal and offset signal to modify the PWM signal to thereby elliminate the offset of the output voltage.

摘要翻译： 在包括用于产生与电压调节器的输出电压相关的第一信号的误差放大器的电压调节器中，产生与电压调节器的电感器电流相关的第二信号的电流感测电路和用于产生PWM的PWM比较器 响应于第一和第二信号来调节输出电压的信号，电流馈通自适应电压位置控制包括提供斜坡信号和偏移信号以修改PWM信号，从而使输出电压的偏移得以净化。

公开(公告)号：US20050219926A1

公开(公告)日：2005-10-06

申请号：US11090179

申请日：2005-03-28

申请人： Liang-Pin Tai ,  Jiun-Chiang Chen

发明人： Liang-Pin Tai ,  Jiun-Chiang Chen

IPC分类号： G01R31/00 ,  G11C7/02 ,  H02M3/158

CPC分类号： H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

摘要： A real current sense apparatus for a DC-to-DC converter uses a current mirror composed by two JFETs to mirror the output current of the converter to generate a temperature-independent mirror current to further generate a current sense signal. Due to the temperature-independence of the mirror current, the current sense signal is also temperature-independent.

摘要翻译： 用于DC-DC转换器的实际电流检测装置使用由两个JFET组成的电流镜来反映转换器的输出电流，以产生独立于温度的反射镜电流，以进一步产生电流检测信号。 由于镜电流的温度独立性，电流检测信号也与温度无关。

公开(公告)号：US20120126775A1

公开(公告)日：2012-05-24

申请号：US13022571

申请日：2011-02-07

申请人： Shih-Chieh Hung ,  Hua-Chiang Huang ,  Jiun-Chiang Chen

发明人： Shih-Chieh Hung ,  Hua-Chiang Huang ,  Jiun-Chiang Chen

IPC分类号： G05F1/10

CPC分类号： H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： A switching power converter including an upper-bridge switch, a lower-bridge switch, an impedance circuit, a first control circuit, a second control circuit and a logic circuit is provided. The impedance circuit generates an output voltage and a sensing current according to a conductive state of the upper-bridge switch and the lower-bridge switch. The first control circuit generates a first pulse signal according to the output voltage. The second control circuit has a first mode and a second mode for generating a second pulse signal and a third pulse signal individually. Furthermore, the second control circuit uses different threshold values in different modes to determine whether to switch the mode thereof, so as to form a hysteretic effect in mode switching. The logic circuit controls the upper-bridge switch by the first pulse signal, and controls the lower-bridge switch by the second pulse signal or the third pulse signal.

摘要翻译： 提供一种包括上桥开关，下桥开关，阻抗电路，第一控制电路，第二控制电路和逻辑电路的开关电源转换器。 阻抗电路根据上桥开关和下桥开关的导通状态产生输出电压和感测电流。 第一控制电路根据输出电压产生第一脉冲信号。 第二控制电路具有分别产生第二脉冲信号和第三脉冲信号的第一模式和第二模式。 此外，第二控制电路使用不同模式的不同阈值来确定是否切换其模式，以便在模式切换中形成滞后效应。 逻辑电路通过第一脉冲信号控制上桥开关，并通过第二脉冲信号或第三脉冲信号控制下桥开关。

公开(公告)号：US07560917B2

公开(公告)日：2009-07-14

申请号：US11220561

申请日：2005-09-08

申请人： Hsin-Hsin Ho ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Jiun-Chiang Chen

发明人： Hsin-Hsin Ho ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Jiun-Chiang Chen

IPC分类号： G05F1/618

CPC分类号： H02M3/158 ,  H02M2001/0019

摘要： In a voltage regulator including an error amplifier to generate a first signal related to an output voltage of the voltage regulator, a current sense circuit to generate a second signal related to an inductor current of the voltage regulator, and a PWM comparator to generate a PWM signal in response to the first and second signals to regulate the output voltage, a current feed-through adaptive voltage position control comprises supplying ramp signal and offset signal to modify the PWM signal to thereby eliminate the offset of the output voltage.

摘要翻译： 在包括用于产生与电压调节器的输出电压相关的第一信号的误差放大器的电压调节器中，产生与电压调节器的电感器电流相关的第二信号的电流感测电路和用于产生PWM的PWM比较器 信号响应于第一和第二信号以调节输出电压，电流馈通自适应电压位置控制包括提供斜坡信号和偏移信号以修改PWM信号，从而消除输出电压的偏移。