摘要:
A power semiconductor element having a lightly doped drift and buffer layer is disclosed. One embodiment has, underneath and between deep well regions of a first conductivity type, a lightly doped drift and buffer layer of a second conductivity type. The drift and buffer layer has a minimum vertical extension between a drain contact layer on the adjacent surface of a semiconductor substrate and the bottom of the deepest well region which is at least equal to a minimum lateral distance between the deep well regions. The vertical extension can also be determined such that a total amount of dopant per unit area in the drift and buffer layer is larger then a breakdown charge amount at breakdown voltage.
摘要:
The fabrication of a semiconductor component having a semiconductor body in which is arranged a very thin dielectric layer having sections which run in the vertical direction and which extend very deeply into the semiconductor body is disclosed. In one method a trench is formed in a drift zone region proceeding from the front side of a semiconductor body, a sacrificial layer is produced on at least a portion of the sidewalls of the trench and at least a portion of the trench is filled with a semiconductor material which is chosen such that the quotient of the net dopant charge of the semiconductor material in the trench and the total area of the sacrificial layer on the sidewalls of the trench between the semiconductor material and the drift zone region is less than the breakdown charge of the semiconductor material, and the sacrificial layer is replaced with a dielectric.
摘要:
A semiconductor component is disclosed. One embodiment provides a semiconductor body having a cell region with at least one zone of a first conduction type and at least one zone of a second conduction type in a rear side. A drift zone of the first conduction type in the cell region is provided. The drift zone contains at least one region through which charge carriers flow in an operating mode of the semiconductor component in one polarity and charge carriers do not flow in an operating mode of the semiconductor component in an opposite polarity.
摘要:
A semiconductor component has at least one first terminal zone of a first conductivity type in a semiconductor body. The first terminal zone is contact-connected by a first terminal electrode. A drift zone of the first conductivity type is adjoined by a second terminal zone of the second conductivity type. A channel zone of a second conductivity type is formed between the at least one first terminal zone and the drift zone. A control electrode is insulated from the semiconductor body and adjacent to the channel zone. A first channel is formed by the channel zone in a region adjacent to the control electrode, the first channel conducts only upon application of a control voltage that is not equal to zero between the control electrode and the first terminal zone. The first terminal electrode is connected to the drift zone via at least one second channel of the first conductivity type, which already conducts in the event of a control voltage equal to zero.
摘要:
The invention relates to a configuration for generating a low-voltage signal proportional to the high voltage present between the source and the drain of a power transistor. For this purpose, a capacitive voltage divider including the source-gate capacitance serving as a low-voltage tap and the source-drain capacitance serving as a high-voltage element is situated in a voltage sense region.
摘要:
Disclosed is a MOSFET including at least one transistor cell. The at least one transistor cell includes a source region, a drain region, a body region and a drift region. The body region is arranged between the source region and the drift region and the drift region is arranged between the body region and the drain region. The at least one transistor cell further includes a compensation region arranged in the drift region and distant to the body region, a source electrode electrically contacting the source region and the body region, a gate electrode arranged adjacent the body region and dielectrically insulated from the body region by a gate dielectric, and a coupling arrangement including a control terminal. The coupling arrangement is configured to electrically couple the compensation region to at least one of the body region, the source region, the source electrode and the gate electrode dependent on a control signal received at the control terminal.
摘要:
A semiconductor component having a semiconductor body is disclosed. In one embodiment, the semiconductor component includes a drift zone of a first conductivity type, a drift control zone composed of a semiconductor material which is arranged adjacent to the drift zone at least in places, a dielectric which is arranged between the drift zone and the drift control zone at least in places. A quotient of the net dopant charge of the drift control zone, in an area adjacent to the accumulation dielectric and the drift zone, divided by the area of the dielectric arranged between the drift control zone and the drift zone is less than the breakdown charge of the semiconductor material in the drift control zone.
摘要:
In various embodiments, a driving circuit for a transistor is provided. The driving circuit may include a transistor including a control terminal; a capacitance; a first switch and a power source, wherein the first switch may be coupled between the power source and a first terminal of the capacitance; a second switch and an inductance which may be coupled in series between the first terminal of the capacitance and the control terminal of the transistor.
摘要:
A MOS transistor having an increased gate-drain capacitance is described. One embodiment provides a drift zone of a first conduction type. At least one transistor cell has a body zone, a source zone separated from the drift zone by the body zone, and a gate electrode, which is arranged adjacent to the body zone and which is dielectrically insulated from the body zone by a gate dielectric. At least one compensation zone of the first conduction type is arranged in the drift zone. At least one feedback electrode is arranged at a distance from the body zone, which is dielectrically insulated from the drift zone by a feedback dielectric and which is electrically conductively connected to the gate electrode.
摘要:
A semiconductor component including a drift zone and a drift control zone. One embodiment provides a transistor component having a drift zone, a body zone, a source zone and a drain zone. The drift zone is arranged between the body zone and the drain zone. The body zone is arranged between the source zone and the drift zone.