摘要:
Switch with at least two series-connected MOS-FETs has a drain terminal of a preceding MOS-FET connected to a source terminal of a succeeding MOS-FET the MOS-FETs having respective control terminals connectible to a control voltage. The control terminal of the preceding MOS-FET is directly connected to a terminal of the control voltage source. The control terminal of the succeeding MOS-FET is connected to the control terminal of the respective preceding MOS-FET via a diode poled in forward direction with respect to the control voltage source. A resistor is connected between the control terminal and the source terminal of the succeeding MOS-FET.
摘要:
The invention relates to a semiconductor arrangement having a MOSFET structure and an active zener function. A n+-doped zone and a p+-doped zone are provided at the bottom of a trench for the purpose of forming zener diodes, the n+-doped zone being directly connected to the gate electrode.
摘要:
A power FET is preceded by an input amplifier consisting of a second FET of the same channel type and a third FET of an opposite channel type. The FETs of the pre-amplifier can be integrated into the chip of the power FET without additional production steps if the power FET and the second FET are designed as vertical FETs and the third FET as a lateral FET. Through this semiconductor device, the relatively high input capacitance of power MISFETs, which results in slow switching speeds when driven by standard ICs, is overcome.
摘要:
MIS-FET, including a semiconductor substrate of a given first conductivity type having first and second surfaces, at least one channel zone of a second conductivity type opposite the first conductivity type embedded on the first surface of the substrate, a source zone of the first conductivity type embedded in the channel zone, a drain zone adjoining the first surface of the substrate, a drain electrode connected to the second surface of the substrate, and insulating layer disposed on the first surface of the substrate, at least one gate electrode disposed on the insulating layer, at least one injector zone of the second conductivity type embedded in the first surface of the substrate, and a contact being connected to the at least one injector zone and connectible to a voltage supply.
摘要:
The invention relates to a power transistor with a semiconductor body. When shutting off a power transistor, local fusing of the semiconductor body may occur, if a characteristic power loss is exceeded for a certain period of time (second breakdown). This can be avoided, if the transistor includes a multiplicity of small partial transistors with very narrow emitter zones which are mutually paralleled via a ballast resistance each.
摘要:
An IGFET assembly, includes a semiconductor substrate of a given first conductivity type having first and second surfaces, an IGFET having at least one channel zone of a second conductivity type opposite the first given conductivity type embedded in the first surface of the substrate, a source zone of the first conductivity type embedded planar in the channel zone, a drain zone adjacent the first surface of the substrate, a drain electrode connected to the second surface of the substrate, an insulating layer disposed on the first surface of the substrate, at least one gate electrode disposed on the insulating layer, at least one injector zone of the second conductivity type embedded in the first surface of the substrate, a contact for connecting the injector zone to a voltage source, an emitter zone of the first conductivity type embedded in the injector zone, the emitter zone having a heavier doping than the injector zone, the injector zone including a part thereof emerging to the first surface of the substrate, the drain zone having a part thereof emerging to the first surface of the substrate between the channel zone and the injector zone, the parts of the injector and drain zones emerging to the first surface of the substrate being covered by the gate electrode, and the injector zone having a surface and having a doping, at least at the surface thereof, forming a channel in the surface of the injector zone connecting the drain zone to the emitter zone when a voltage is present switching the IGFET into conduction.
摘要:
A field effect semiconductor component has a bipolar transistor structure in a semiconductor body consisting of a lightly doped upper area of a first conductivity type as base region and of a lower heavily doped area as emitter region with a complementary conductivity type. Between the base region and the emitter region, a horizontal pn junction forms. The emitter region is in resistive contact with a large-area emitter electrode on the rear of the semiconductor component. On the top of the semiconductor component, a first insulated gate electrode and a second insulated gate electrode are arranged adjacently in the area close to the surface. A vertical pn junction region insulated from the upper area is arranged in such a manner that a collector region and the base region of the bipolar transistor structure can be controlled via the insulated gate electrodes (G1 and G2) arranged electrically separately.
摘要:
A semiconductor component with a power MOSFET and control circuit for controlling the power MOSFET. Both the power MOSFET and the control circuit have separate semiconductor bodies. The semiconductor body of the control circuit is arranged on one of the main surfaces of the semiconductor body of the power MOSFET. The control circuit is electrically insulated from the MOSFET by an insulating layer and mechanically coupled to the MOSFET by means of a bonding layer. The MOSFET is fastened to a cooling body which serves as a heat sink for the semiconductor component. The terminals of the control circuit and the MOSFET are attached to housing connections with leads.
摘要:
Planar semiconductor component which has a substrate of one conduction type, and a contact-connected zone of opposite conductivity type embedded in the surface of the substrate in planar fashion and having a part thereof emerging to the surface. It also has a control electrode covering that part of the contact-connected contacted zone which emerges to the surface, an insulating layer on the surface, an edge electrode seated on the insulating layer at the edge of the substrate and electrically connected to the substrate, and at least one protective ring zone of the opposite conductivity type positioned between the edge of the substrate and the contact-connected zone and embedded in planar fashion in the surface. The ring zone includes at least one conducting layer completely covering a part of the substrate emerging to the surface between the protective ring zone and the contacted zone, wherein the conducting layer is electrically insulated from the emerging part of the substrate, and electrically contacted by one of the contact-connected protective ring zones embedded in planar fashion in the substrate surface.
摘要:
An IGFET assembly, includes a semiconductor substrate of a given first conductivity type having first and second surfaces, and an IGFET having at least one channel zone of a second conductivity type opposite the given first conductivity type embedded in the first surface of the substrate, a source zone of the first conductivity type embedded in the channel zone, a drain zone adjacent the first surface of the substrate, a drain electrode connected to the second surface of the substrate, a gate electrode disposed above and insulated from the first surface of the substrate, an injector zone of the second conductivity type being embedded in the first surface of the substrate under the gate electrode and being connectible to a voltage source, the injector zone having a surface and having a doping, at least at the surface of the injector zone, causing an inversion layer to be formed at the surface of the injector zone when the IGFET is switched on, and a contact zone of the second conductivity type embedded in the first surface of the substrate and contacting the injector zone at a common boundary of the contact and injector zones below the gate electrode, the contact zone having a surface and having a higher doping than the injector zone preventing an inversion layer from forming at the surface of the contact zone when the IGFET is switched on.