公开(公告)号：US5736890A

公开(公告)日：1998-04-07

申请号：US626856

申请日：1996-04-03

申请人： H. P. Yee ,  Hiromi Ito ,  Kenji Horiguchi ,  Satoru Sawahata

发明人： H. P. Yee ,  Hiromi Ito ,  Kenji Horiguchi ,  Satoru Sawahata

IPC分类号： H01L29/78 ,  H02M7/21 ,  H02M7/217 ,  H03K17/082 ,  H03K17/56

CPC分类号： H02M7/217 ,  H03K17/0822 ,  H03K2017/307

摘要： A rectifying device comprising of a SRMOS, an inductor, and a control circuit is disclosed. The SRMOS has a gate, a drain, and a source. The gate of the SRMOS is connected to the output of the control circuit. The inductor is connected to the drain of the SRMOS. The control circuit uses two sense traces for determining the voltage (or current) passing between the inductor (that is connected to the drain) and the source of the SRMOS. Upon sensing a forward characteristic (voltage or current), the SRMOS forward biases to allow current to flow through the SRMOS. Upon sensing a reverse characteristic (voltage or current), the SRMOS reverse biases to cut off any current flow. Hysteresis is used in setting the forward biasing threshold voltage and the reverse biasing threshold voltage for the SRMOS. In reverse biasing and forward biasing the SRMOS, V.sub.gs is stepped (or curved) controlled to avoid false turn ON/OFF of the SRMOS.

摘要翻译： 公开了一种包括SRMOS，电感器和控制电路的整流装置。 SRMOS有一个门，一个排水沟和一个源头。 SRMOS的门连接到控制电路的输出。 电感连接到SRMOS的漏极。 控制电路使用两条感测迹线来确定电感器（连接到漏极）和SRMOS源之间的电压（或电流）。 在感测到正向特性（电压或电流）时，SRMOS向前偏置以允许电流流过SRMOS。 在感测到反向特性（电压或电流）时，SRMOS反向偏置以切断任何电流。 迟滞用于设置SRMOS的正向偏置阈值电压和反向偏置阈值电压。 在反向偏置和向前偏置SRMOS时，Vgs被控制（或弯曲），以避免SRMOS的错误打开/关闭。

公开(公告)号：US6038150A

公开(公告)日：2000-03-14

申请号：US39018

申请日：1998-03-13

申请人： Hsian-Pei Yee ,  Satoru Sawahata ,  Masaru Wakatabe

发明人： Hsian-Pei Yee ,  Satoru Sawahata ,  Masaru Wakatabe

IPC分类号： H02M3/28 ,  H02M3/335 ,  H02M7/217

CPC分类号： H02M3/33561 ,  H02M3/33576

摘要： A secondary subcircuit of a converter circuit is disclosed where a method and circuit for operating a transistor to prevent reverse conduction of the current in the secondary subcircuit is disclosed. The diode in the secondary subcircuits of the prior art is replaced by a transistor and the circuitry for controlling the transistor is made part of the control circuit (ASIC). The secondary converter subcircuit includes a secondary coil for generating a voltage that passes through a first transistor M1, a capacitor, and a second transistor M2, where the output terminal of the subcircuit is across said capacitor. A presently preferred embodiment of a control circuit detects the voltage level at a sync node and the output voltage level at the output terminal and controls transistors M1 and M2 accordingly in generating the desired voltage level at the output terminal.

摘要翻译： 公开了一种转换器电路的次级分支电路，其中公开了用于操作晶体管以防止次级子电路中的电流反向导通的方法和电路。 现有技术的次级子电路中的二极管被晶体管替代，并且用于控制晶体管的电路被制成控制电路（ASIC）的一部分。 次级转换器子电路包括用于产生通过第一晶体管M1，电容器和第二晶体管M2的电压的次级线圈，其中子电路的输出端子跨过所述电容器。 控制电路的当前优选实施例检测同步节点处的电压电平和输出端子处的输出电压电平，并相应地控制晶体管M1和M2，以在输出端产生期望的电压电平。