公开(公告)号：US20140042871A1

公开(公告)日：2014-02-13

申请号：US13964042

申请日：2013-08-10

申请人： Fairchild Korea Semiconductor Ltd.

发明人： Youngsik LEE ,  Eunsung JANG

IPC分类号： H01L41/04

CPC分类号： H02N2/067 ,  H01L41/042 ,  H03K7/08 ,  H03K17/162 ,  H03K2217/0045

摘要： A piezoelectric driving circuit generates a first PWM output according to a result of comparison between a ramp signal and a reference sinewave and generates a second PWM according to a result of comparison between the ramp signal and an inverse reference sinewave of the reference sinewave. The switching operation of the first and third switches of the piezoelectric driving circuit are controlled according to the first PWM output and the switching operation of the second and fourth switches of the piezoelectric driving circuit are controlled according to the second PWM output during a first cycle of the reference sinewave and the inverse reference sinewave. The switching operation of the first and third switches are controlled according to the second PWM output and the switching operation of the second and fourth switches are controlled according to the first PWM output during the next second cycle.

摘要翻译： 压电驱动电路根据斜坡信号和参考正弦波之间的比较结果产生第一PWM输出，并根据斜坡信号和参考正弦波的反参考正弦波之间的比较结果产生第二PWM。 根据第一PWM输出来控制压电驱动电路的第一和第三开关的切换操作，并且在第一个周期期间根据第二PWM输出来控制压电驱动电路的第二和第四开关的开关操作 参考正弦波和反参考正弦波。 根据第二PWM输出控制第一和第三开关的开关操作，并且在下一个第二周期期间根据第一PWM输出来控制第二和第四开关的开关操作。

公开(公告)号：US20140159678A1

公开(公告)日：2014-06-12

申请号：US13957660

申请日：2013-08-02

申请人： Fairchild Korea Semiconductor Ltd.

发明人： Youngbae PARK ,  Eunsung JANG ,  Jaehan YOON ,  Byunghak AHN ,  Jin-Tae KIM ,  Taesung KIM ,  Gwanbon KOO ,  Keun-Eui HONG

IPC分类号： G05F1/10

CPC分类号： G05F1/10 ,  H02M3/33523 ,  H02M2001/0025

摘要： One cable compensation circuit is connected to a shunt regulator to generate a feedback voltage corresponding to an output voltage of a power supply device. The cable compensation circuit controls cathode impedance of the shunt regulator according to the output current of the power supply device to compensate a voltage drop generated in a cable.

摘要翻译： 一个电缆补偿电路连接到并联调节器以产生对应于电源装置的输出电压的反馈电压。 电缆补偿电路根据电源装置的输出电流控制并联稳压器的阴极阻抗，以补偿电缆中产生的电压降。

公开(公告)号：US20130300390A1

公开(公告)日：2013-11-14

申请号：US13889704

申请日：2013-05-08

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： Jae-Yong LEE ,  Young Sik LEE ,  Young-Bae PARK ,  Young-Je LEE ,  Eunsung JANG

IPC分类号： H02M3/156

CPC分类号： H02M3/1563 ,  H02M1/083 ,  H02M3/156 ,  H02M3/158 ,  H02M3/1588

摘要： The present invention related to a switch control circuit, a coupled inductor boost converter including the same, and a driving method thereof. The coupled inductor boost converter includes a first inductor connected between an input voltage and a first node, a second inductor connected between the first node and a second node, and a power switch connected between the first node and a ground, and a switch control circuit. The switch control circuit receives a voltage of the second node and turn on the power switch by using the voltage of the second node at a time when a voltage of the first node becomes a zero voltage.

摘要翻译： 本发明涉及开关控制电路，包括该开关控制电路的耦合电感升压转换器及其驱动方法。 耦合电感升压转换器包括连接在输入电压和第一节点之间的第一电感器，连接在第一节点和第二节点之间的第二电感器以及连接在第一节点和地之间的电源开关，以及开关控制电路 。 开关控制电路接收第二节点的电压，并且在第一节点的电压变为零电压时，通过使用第二节点的电压来接通电源开关。