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    • 3. 发明授权
    • Reference voltage adjustment
    • 参考电压调节
    • US06476669B2
    • 2002-11-05
    • US09902206
    • 2001-07-10
    • David C. McClureRong Yin
    • David C. McClureRong Yin
    • H03K1772
    • G05F3/242
    • A reference voltage trim circuit includes a voltage follower receiving the reference voltage to be trimmed, with one or more resistive loads providing predefined voltage shifts serially connected between the output of the voltage follower and the output of the trim circuit. The voltage follower includes a current mirror differential amplifier receiving the reference voltage at one input and the output of the voltage follower at the other input, and a transistor with a resistive load connected between the power supply voltages and receiving the output of the current mirror differential amplifier at the transistor's gate. The resistive loads provide varying preselected voltage drop and are each shunted by corresponding fuses, with the entire series of resistive loads shunted by a master fuse. To trim the reference voltage, at least the master fuse is blown, together with the fuse(s) shunting resistive loads which combine to result in the desired trim voltage. Pass gates control which end of the resistive load series is connected to the output of the voltage follower and which is connected to the output of the trim circuit. To decrement the reference voltage, a first end is connected to the output of the voltage follower and the second end is connected to trim circuit output; to increment the reference voltage, the second end of the resistive load series is connected to the voltage follower output and the first end is connected to the trim circuit output.
    • 参考电压调整电路包括接收要修整的参考电压的电压跟随器,其中一个或多个电阻负载提供串联连接在电压跟随器的输出端和微调电路的输出之间的预定电压偏移。 电压跟随器包括电流反射镜差分放大器,其在一个输入处接收参考电压,并在另一个输入端接收电压跟随器的输出;以及晶体管,其电阻负载连接在电源电压之间并接收电流镜差分的输出 放大器在晶体管的门。 电阻负载提供变化的预选电压降,并且每个分压由对应的保险丝分流,整个电阻负载系列由主保险丝分流。 为了修整参考电压,至少主保险丝与熔断器一起分流电阻性负载,结合起来产生所需的调整电压。 通路控制电阻负载系列的哪一端连接到电压跟随器的输出端并连接到微调电路的输出。 为了减小参考电压,第一端连接到电压跟随器的输出端,第二端连接到微调电路输出; 为了增加参考电压,电阻负载系列的第二端连接到电压跟随器输出,第一端连接到微调电路输出。
    • 5. 发明授权
    • Emitter turn-off thyristors and their drive circuits
    • 发射极关断晶闸管及其驱动电路
    • US06710639B2
    • 2004-03-23
    • US10378606
    • 2003-03-05
    • Oin HuangBin Zhang
    • Oin HuangBin Zhang
    • H03K1772
    • H03K17/567H01L23/60H01L27/0259H01L29/41716H01L29/744H01L2924/0002H01L2924/00
    • A family of emitter turn-off thyristors and their drive circuit comprise a gate turn-on (GTO) thyristor, a first switch, the drain of the first switch being connected to the cathode of the GTO thyristor, and a second switch connected between the gate of the GTO thyristor and the source of the first switch. The first switch consists of many paralleled metal oxide semiconductor field effect transistors (MOSFETs). The anode of the GTO thyristor and the source of the first switch serve as the annode and the cathode, respective, of the emitter turn-off thyristor. The emitter turn-off thyristor has four control electrodes: the gate of the GTO thyristor, the control electrode of the second switch, the gate of the first switch, and the cathode of the GTO thyristor. The drive circuit comprises a current source circuit, a voltage clamp circuit, a current direction detector, and a control circuit. The ETO thyristor further comprises a current sensing and over-current detector circuit. The first switch is packaged in a printed circuit board.
    • 发射极关断晶闸管及其驱动电路系列包括栅极导通(GTO)晶闸管,第一开关,第一开关的漏极连接到GTO晶闸管的阴极,以及第二开关,其连接在 GTO晶闸管的栅极和第一个开关的源极。 第一个开关由许多并联的金属氧化物半导体场效应晶体管(MOSFET)组成。 GTO晶闸管的阳极和第一开关的源极用作发射极截止晶闸管的环路和阴极。 发射极截止晶闸管具有四个控制电极:GTO晶闸管的栅极,第二开关的控制电极,第一开关的栅极和GTO晶闸管的阴极。 驱动电路包括电流源电路,电压钳位电路,电流方向检测器和控制电路。 ETO晶闸管还包括电流检测和过电流检测器电路。 第一个开关封装在印刷电路板中。
    • 9. 发明授权
    • Highly efficient driver circuit for a solid state switch
    • 高效的固态开关电路
    • US06404265B1
    • 2002-06-11
    • US09373502
    • 1999-08-13
    • Louis A. Guido, Jr.Harold R. Schnetzka
    • Louis A. Guido, Jr.Harold R. Schnetzka
    • H03K1772
    • H02M1/08
    • Systems consistent with this invention comprise a trigger circuit for triggering a silicon device having a control terminal, where the silicon device is subject to variations in the intrinsic control requirements. The trigger circuit comprises a source of direct current (DC) supply voltage, and a DC-to-DC current mode Buck converter for converting the supply voltage into an output DC current not subject to undesired variations due to variations in the supply voltage, the Buck converter supplying to the control terminal a minimum current to turn on the silicon device despite the variations in the intrinsic control requirements. The silicon device may comprise a silicon controlled rectifier (SCR) with a gate terminal, an anode terminal, and a cathode terminal, and wherein the control terminal is the gate terminal, and wherein the variations in the intrinsic control requirements are variations in the intrinsic gate-to-cathode control current and voltage requirements.
    • 与本发明一致的系统包括用于触发具有控制端子的硅器件的触发电路,其中硅器件受到固有控制要求的变化。 触发电路包括直流(DC)电源电压源和DC-DC电流模式降压转换器,用于将电源电压转换成不受供电电压变化引起的不期望的变化的输出直流电流, 降压转换器为控制端子提供最小电流以打开硅器件,尽管内部控制要求有变化。 硅器件可以包括具有栅极端子,阳极端子和阴极端子的可控硅整流器(SCR),并且其中控制端子是栅极端子,并且其中本征控制要求的变化是内在的 门到阴极控制电流和电压要求。