公开(公告)号：US20100172156A1

公开(公告)日：2010-07-08

申请号：US12348335

申请日：2009-01-05

申请人： Ta-Yung YANG ,  Chou-Sheng WANG ,  Pei-Sheng TSU

发明人： Ta-Yung YANG ,  Chou-Sheng WANG ,  Pei-Sheng TSU

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： A synchronous rectifier circuit of a switching power converter is provided and includes first and second power transistors and first and second diodes connected to a transformer and an output of the power converter for rectifying. An arbiter circuit generates a lock signal to prevent the second power transistor from being turned on when the first diode the first power transistor is turned on. A controller generates a drive signal to control the first power transistor according to an on signal and an off signal. A phase-lock circuit generates the off signal according to the on signal. The on signal is enabled once the first diode is forward biased. The one signal enables the drive signal for turning on the first power transistor. The off signal disables the drive signal for turning off the first power transistor. The off signal is enabled before the disabling of the on signal.

摘要翻译： 提供了一种开关电源转换器的同步整流电路，包括第一和第二功率晶体管以及连接到变压器的第一和第二二极管以及用于整流的功率转换器的输出。 当第一功率晶体管被接通时，仲裁电路产生锁定信号以防止第二功率晶体管导通。 控制器根据接通信号和截止信号产生驱动信号以控制第一功率晶体管。 锁相电路根据接通信号产生关断信号。 第一个二极管正向偏置后，导通信号被使能。 一个信号使得驱动信号能够接通第一功率晶体管。 关闭信号禁用用于关闭第一功率晶体管的驱动信号。 关闭信号在禁用接通信号之前被使能。

公开(公告)号：US20100007317A1

公开(公告)日：2010-01-14

申请号：US12357491

申请日：2009-01-22

申请人： Ta-Yung YANG

发明人： Ta-Yung YANG

IPC分类号： G05F1/00

CPC分类号： H02M3/1582 ,  H02M1/4225 ,  Y02B70/126

摘要： A buck-boost PFC converter is provided and includes an inductor, first and second transistors, a first diode, and a control circuit. The inductor has a first terminal and a second terminal. The first transistor is coupled to a positive-power rail and the first terminal of the inductor. The second transistor is coupled to the second terminal of the inductor and a negative-power rail. The first diode is connected from the second terminal of the inductor to an output of the buck-boost PFC converter. The control circuit generates a first signal and a second signal coupled to control the first transistor and the second transistor respectively. The first signal is utilized to turn on the first transistor for conducting the positive-power rail to the inductor. The second signal is utilized to turn on the second transistor for conducting the inductor to the negative-power rail.

摘要翻译： 提供降压 - 升压PFC转换器，其包括电感器，第一和第二晶体管，第一二极管和控制电路。 电感器具有第一端子和第二端子。 第一晶体管耦合到正电源轨和电感器的第一端。 第二晶体管耦合到电感器的第二端子和负电源轨道。 第一个二极管从电感器的第二个端子连接到降压 - 升压PFC转换器的输出端。 控制电路产生分别耦合以控制第一晶体管和第二晶体管的第一信号和第二信号。 第一个信号被用于接通第一晶体管，以将正电力导轨传导到电感器。 第二信号用于接通第二晶体管，用于将电感器导通到负电源轨。

公开(公告)号：US20100007295A1

公开(公告)日：2010-01-14

申请号：US12488676

申请日：2009-06-22

申请人： Ta-Yung YANG ,  Pei-Sheng Tsu ,  Shih-Jen Yang ,  Yi-Min Hsu ,  Chung-Hui Yeh

发明人： Ta-Yung YANG ,  Pei-Sheng Tsu ,  Shih-Jen Yang ,  Yi-Min Hsu ,  Chung-Hui Yeh

IPC分类号： H02H7/085

CPC分类号： H02P6/16 ,  H02P6/085 ,  H02P29/0241 ,  H02P29/027 ,  H02P2205/05

摘要： A BLDC (brushless direct current) motor system of the present invention includes a control circuit, a sequencer, a driving circuit, and a BLDC motor. The control circuit determines the maximum torque and the maximum speed of the BLDC motor. The control circuit includes an over-current detection circuit to generate a reset signal in response to a switching current of the BLDC motor. The reset signal is generated when the switching current of the BLDC motor exceeds a threshold. A pulse width of the PWM signal is correlated to the level of a speed-control signal and the level of the torque-control signal. The pulse width of the PWM signal is also controlled by the reset signal generated by the over-current detection circuit.

摘要翻译： 本发明的BLDC（无刷直流）电动机系统包括控制电路，定序器，驱动电路和BLDC电动机。 控制电路确定BLDC电机的最大转矩和最大转速。 控制电路包括过电流检测电路，以响应于BLDC电动机的开关电流产生复位信号。 当BLDC电机的开关电流超过阈值时，产生复位信号。 PWM信号的脉冲宽度与速度控制信号的电平和转矩控制信号的电平相关。 PWM信号的脉冲宽度也由过电流检测电路产生的复位信号控制。

公开(公告)号：US20090309634A1

公开(公告)日：2009-12-17

申请号：US12471538

申请日：2009-05-26

申请人： Ta-Yung YANG ,  Chuan-Chang LI

发明人： Ta-Yung YANG ,  Chuan-Chang LI

IPC分类号： H03K3/00 ,  H03K17/687

CPC分类号： H02M1/08 ,  H03K17/063 ,  H03K17/0822 ,  H03K17/122 ,  H03K19/0005 ,  H03K2217/0036

摘要： A transistor gate driving circuit is developed for power saving. It includes a first high-side transistor, a second high-side transistor and a low-side transistor. A voltage clamp device is connected to the gate terminal of the first high-side transistor to limit the maximum output voltage. A detection circuit is coupled to detect a feedback signal of the power converter. The feedback signal is correlated to the output load of the power converter. The detection circuit will generate a disable signal in response to the level of the feedback signal. The disable signal is coupled to disable the second high-side transistor once the level of the feedback signal is lower than a threshold.

摘要翻译： 开发了用于省电的晶体管栅极驱动电路。 它包括第一高侧晶体管，第二高侧晶体管和低侧晶体管。 电压钳位器件连接到第一高侧晶体管的栅极端子以限制最大输出电压。 耦合检测电路以检测功率转换器的反馈信号。 反馈信号与功率转换器的输出负载相关。 检测电路将响应于反馈信号的电平而产生禁用信号。 一旦反馈信号的电平低于阈值，禁用信号被耦合以禁用第二高侧晶体管。

公开(公告)号：US20090237133A1

公开(公告)日：2009-09-24

申请号：US12389465

申请日：2009-02-20

申请人： Ta-Yung YANG

发明人： Ta-Yung YANG

IPC分类号： H03L7/00

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

摘要： A switching control circuit for multi-channels and multi-phases power converter according to the present invention comprises a master control circuit and a slave control circuit. The master control circuit generates a multiplier signal in response to an input voltage and an output voltage of the power converter, and generates a first switching signal to switch a first inductor of the power converter in accordance with the multiplier signal and the first-current signal generated by a first current-sense device. The slave control circuit generates a second switching signal to switch a second inductor of the power converter in accordance with the multiplier signal, the first switching signal and a second-current signal generated by a second current-sense device. Once the power converter is at light-load, the multiplier signal is disabled to turn off the second switching signal to turn off the slave control circuit for power saving of the power converter.

摘要翻译： 根据本发明的用于多通道和多相功率转换器的开关控制电路包括主控电路和从控制电路。 主控制电路响应于功率转换器的输入电压和输出电压产生乘法器信号，并且产生第一开关信号以根据乘法器信号和第一电流信号切换功率转换器的第一电感器 由第一电流检测装置产生。 从控制电路产生第二切换信号，以根据乘法器信号，第一切换信号和由第二电流感测装置产生的第二电流信号切换功率转换器的第二电感器。 一旦电源转换器处于轻负载状态，禁止乘法器信号关闭第二个开关信号，以关闭从控制电路以便功率转换器的功率节省。