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    • 12. 发明申请
    • DC/DC CONVERTER, POWER CONVERTER AND CONTROL METHOD THEREOF
    • DC / DC转换器,电源转换器及其控制方法
    • US20120250361A1
    • 2012-10-04
    • US13424387
    • 2012-03-20
    • Pei-Qing HUHong-Yuan JINHong-Jian GANJian-Ping YING
    • Pei-Qing HUHong-Yuan JINHong-Jian GANJian-Ping YING
    • H02M3/335
    • H02M3/33569H02M2001/0035H02M2001/0058Y02B70/1433Y02B70/1491Y02B70/16
    • A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit having a load, a rectangular wave generator having a bridge arm, a resonant tank, a detection unit and a control unit. The bridge arm includes a first and a second switches connected each other. The detection unit detects a signal related to a state of the load. When the state of the load is a light-load or a no-load, the control unit controls ON/OFF state of the first and second switches by pulse width modulation mode to convert an input voltage into at least one rectangular wave for the resonant tank. A duty ratio of the first switch is within a first or second predetermined range, and a duty ratio of the second switch is complementary to the duty ratio of the first switch, whereby a voltage gain of the DC/DC converter is greater than 1.
    • 公开了一种DC / DC转换器,功率转换器及其控制方法,其中DC / DC转换器包括具有负载的输出电路,具有桥臂的矩形波发生器,谐振槽,检测单元和控制 单元。 桥臂包括彼此连接的第一和第二开关。 检测单元检测与负载状态有关的信号。 当负载状态为轻负载或无负载时,控制单元通过脉宽调制模式控制第一和第二开关的接通/断开状态,以将输入电压转换为至少一个矩形波用于谐振 坦克。 第一开关的占空比在第一或第二预定范围内,第二开关的占空比与第一开关的占空比互补,由此DC / DC转换器的电压增益大于1。
    • 15. 发明授权
    • Synchronous rectifier with burst mode control
    • 同步整流器,具有突发模式控制
    • US06912143B2
    • 2005-06-28
    • US10632541
    • 2003-07-30
    • Hong-Jian GanYao-Jian HuangYi ChenAlpha J. Zhang
    • Hong-Jian GanYao-Jian HuangYi ChenAlpha J. Zhang
    • H02M3/335H02M7/217
    • H02M3/33592Y02B70/1475
    • The present invention proposes a synchronous rectifier with burst mode control. A synchronous rectifier includes a transformer having a primary winding electrically connected to a power source, a secondary winding, a first auxiliary winding, and a second auxiliary winding, a first switch and a second switch electrically connected to the secondary winding and control terminals of the first switch and the second switch individually connected to the first and second auxiliary windings for being either self-driven directly from voltages of the auxiliary windings, a third switch electrically connected between the first switch and the first auxiliary winding in series, a fourth switch electrically connected between the second switch and the second auxiliary winding in series, a detecting circuit electrically connected to an output terminal of the synchronous rectifier for detecting a load status, and a control circuit electrically connected to the detecting circuit for enabling the third switch and the fourth switch when the load status is at a heavy load and disabling the third switch and the fourth switch when the load status is at a light load.
    • 本发明提出了一种具有突发模式控制的同步整流器。 同步整流器包括变压器,其具有电连接到电源,次级绕组,第一辅助绕组和第二辅助绕组的初级绕组,第一开关和第二开关,电连接到二次绕组和控制端子 第一开关和第二开关单独地连接到第一和第二辅助绕组,用于直接从辅助绕组的电压自驱动;第三开关,电连接在第一开关和第一辅助绕组之间串联;第四开关, 连接在第二开关和第二辅助绕组串联之间;检测电路,电连接到用于检测负载状态的同步整流器的输出端;以及控制电路,电连接到检测电路,用于使第三开关和第四 当负载状态处于负载较重且无效时切换 第三开关和第四开关,当负载状态处于轻负载时。
    • 16. 发明授权
    • DC/DC converter, power converter and control method thereof
    • DC / DC转换器,功率转换器及其控制方法
    • US09236807B2
    • 2016-01-12
    • US13427450
    • 2012-03-22
    • Hong-Yuan JinPei-Qing HuHong-Jian GanJian-Ping Ying
    • Hong-Yuan JinPei-Qing HuHong-Jian GanJian-Ping Ying
    • H02M3/335H02M1/00
    • H02M3/33569H02M2001/0035H02M2001/0058Y02B70/1433Y02B70/1491Y02B70/16
    • A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into at least one rectangular wave. The resonant tank provides a first voltage based on the rectangular wave for the output circuit. The detection unit detects a signal related to a state of the load. When the state of the load is light-load or a no-load, the control unit controls a working frequency or a duty ratio of the rectangular wave, so that the duty ratio of the rectangular wave is within a predetermined range, in which a voltage gain of the DC/DC converter is greater than another voltage gain under the condition of 50% duty ratio.
    • 公开了DC / DC转换器,功率转换器及其控制方法,其中DC / DC转换器包括输出电路,矩形波发生器,谐振回路,检测单元和控制单元。 输出电路有负载。 矩形波发生器将输入电压转换成至少一个矩形波。 谐振槽为输出电路提供基于矩形波的第一电压。 检测单元检测与负载状态有关的信号。 当负载状态为轻负载或空载时,控制单元控制矩形波的工作频率或占空比,使得矩形波的占空比在预定范围内,其中 在50%占空比的条件下,DC / DC转换器的电压增益大于另一个电压增益。
    • 19. 发明申请
    • HEAT DISSIPATION APPARATUS FOR MEDIUM-VOLTAGE DRIVE
    • 用于中压驱动的散热装置
    • US20130083485A1
    • 2013-04-04
    • US13314700
    • 2011-12-08
    • Ai-Xing TongHong-Jian Gan
    • Ai-Xing TongHong-Jian Gan
    • H05K7/20
    • H01L23/427F28D15/0275H01L2924/0002H01L2924/00
    • A heat dissipation apparatus is suitable for dissipating heat from heat-generating elements in a medium-voltage drive. The heat dissipation apparatus comprises: a heat-dissipating substrate, wherein the heat-generating elements are placed on at least one of a first surface and a second surface of the heat-dissipating substrate; at least one heat pipe group each of which includes a plurality of heat pipes, each heat pipe having an evaporation section and a condensation section, wherein the evaporation section is buried in an inner layer of the heat-dissipating substrate for absorbing heat from the heat-generating elements; and a plurality of fins arranged to be intersected with each heat pipe and connected to the condensation sections of the heat pipes, so as to transfer the heat released from the condensation sections to air. The contact portions between the heat pipe group and the fins are arranged in triangle staggered arrangements.
    • 散热装置适用于从中压驱动器中的发热元件散热。 散热装置包括:散热基板,其中发热元件放置在散热基板的第一表面和第二表面中的至少一个上; 至少一个热管组,每个热管组包括多个热管,每个热管具有蒸发部分和冷凝部分,其中所述蒸发部分被埋在所述散热基板的内层中以从所述热量吸收热量 生成元素 以及多个翅片,其布置成与每个热管相交并连接到热管的冷凝部分,以将从冷凝部分释放的热量转移到空气中。 热管组和散热片之间的接触部分布置成三角形交错布置。
    • 20. 发明申请
    • POWER SWITCH SERIES CIRCUIT AND CONTROL METHOD THEREOF
    • 电源开关系列电路及其控制方法
    • US20130082762A1
    • 2013-04-04
    • US13421877
    • 2012-03-16
    • Hong-Jian GANJian-Ping YINGJie FUWei-Liang FUMing WANG
    • Hong-Jian GANJian-Ping YINGJie FUWei-Liang FUMing WANG
    • H03K17/60
    • H03K17/0828H02H7/222H03K17/107
    • The present invention provides a power switch series circuit and its control method. The power switch series circuit includes a plurality of series modules, a control module and a drive module. At least one series module has a power switch and a detection module, and the detection module includes a detection unit and an isolation unit, so as to detect the overvoltage and output a voltage detection signal based on the detected voltage. The control module receives the voltage detection signal and outputs the corresponding control signal. The drive module amplifies the control signal to drive each power switch to turn ON or turn OFF. The control module outputs the corresponding control signal to turn off each power switch when the overvoltage happens.
    • 本发明提供一种功率开关串联电路及其控制方法。 电源开关串联电路包括多个串联模块,一个控制模块和一个驱动模块。 至少一个串联模块具有电源开关和检测模块,检测模块包括检测单元和隔离单元,以便根据检测到的电压检测过电压并输出电压检测信号。 控制模块接收电压检测信号并输出​​相应的控制信号。 驱动模块放大控制信号以驱动每个电源开关打开或关闭。 当过电压发生时,控制模块输出相应的控制信号以关闭每个电源开关。