摘要:
In an ESD protection circuit for an analog bipolar circuit, the avalanche breakdown voltage of a reverse-coupled NPN BJT acting as an avalanche diode is adjusted to comply with breakdown voltage and latchup requirements by including a resistor between the base and collector of the BJT.
摘要:
A circuit includes multiple doped regions in a substrate. A first of the doped regions has a tip proximate to a second of the doped regions and is separated from the second doped region by an intrinsic region to form a P-I-N structure. The circuit also includes first and second electrodes electrically coupled to the first and second doped regions, respectively. The electrodes are configured to supply voltages to the first and second doped regions to reverse bias the P-I-N structure and generate light. The first doped region could include multiple tips, the second doped region could include multiple tips, and each tip of the first doped region could be proximate to one of the tips of the second doped region to form multiple P-I-N structures. The P-I-N structure could also be configured to operate in double avalanche injection conductivity mode with internal positive feedback.
摘要:
A lateral DMOS transistor formed on a silicon-on-insulator (SOI) structure has a higher breakdown voltage that results from a cavity that is formed in the bulk region of the SOI structure. The cavity exposes a portion of the bottom surface of the insulator layer of the SOI structure that lies directly vertically below the drift region of the DMOS transistor.
摘要:
A DMOS transistor with a lower on-state drain-to-source resistance and a higher breakdown voltage utilizes a slanted super junction drift structure that lies along the side wall of an opening with the drain region at the bottom of the opening and the source region near the top of the opening.
摘要:
In a power device such as an NLDMOS power array comprising multiple NLDMOS devices, the gates of which are driven by a driver, self protection against overvoltage events is implemented by providing a high side pull-up avalanche diode connected to at least some of the gates of the NLDMOS devices.
摘要:
A diode for alternating current (DIAC) electrostatic discharge (ESD) protection circuit is formed in a silicon germanium (SiGe) hetrojunction bipolar transistor (HBT) process that utilizes a very thin collector region. ESD protection for a pair of to-be-protected pads is provided by utilizing the base structures and the emitter structures of the SiGe transistors.
摘要:
A silicon-based light emitting structure is formed as a high density array of light-emitting p-n junctions that substantially increases the intensity of the light emitted in a planar region. The p-n junctions are formed using standard CMOS processing methods, and emit light in response to applied voltages that generate avalanche breakdown and an avalanche current.
摘要:
In a LVTSCR or snapback NMOS ESD structure, low voltage protection as well as higher voltage protection is provided by introducing a floating gate that capacitively couples with the control gate of the ESD structure and programming the floating gate to have different charges on it as desired.
摘要:
A silicon-based light emitting structure is formed as a high density array of light-emitting p-n junctions that substantially increases the intensity of the light emitted in a planar region. The p-n junctions are formed using standard CMOS processing methods, and emit light in response to applied voltages that generate avalanche breakdown and an avalanche current.
摘要:
A ballasting region is placed between the base region and the collector contact of a bipolar junction transistor to relocate a hot spot away from the collector contact of the transistor. Relocating the hot spot away from the collector contact prevents the collector contact from melting during an electrostatic discharge (ESD) pulse.