摘要:
Protection device structures and related fabrication methods are provided. An exemplary semiconductor protection device includes a base region of semiconductor material having a first conductivity type, an emitter region within the base region having the opposite conductivity type, and a collector region of semiconductor material having the second conductivity type, wherein at least a portion of the base region resides between the emitter region and the collector region. A depth of the collector region is greater than a depth of the emitter region and less than or equal to a depth of the base region such that a distance between a lateral boundary of the emitter region and a proximal lateral boundary of the collector region is greater than zero and the collector region does not overlap or otherwise underlie the emitter region.
摘要:
Die structures for electronic device packages and related fabrication methods are provided. An exemplary die structure includes a substrate having a first layer of semiconductor material including a semiconductor device formed thereon, a handle layer of semiconductor material, and a buried layer of dielectric material between the handle layer and the first layer. The die structure also includes a plurality of shunting regions in the first layer of semiconductor material, wherein each shunting region includes a doped region in the first layer that is electrically connected to the handle layer of semiconductor material, and a body region underlying the doped region that is contiguous with at least a portion of the first layer underlying a semiconductor device.
摘要:
An integrated circuit is provided. The integrated circuit may include, but is not limited to, a first node, a second node configured to be coupled to ground, an output driver, and a electrostatic discharge circuit electrically coupled to the first node, the second node, and the output driver. The electrostatic discharge circuit may include, but is not limited a high-pass filter configured to detect an electrostatic discharge event at the first node, a driving stage circuit electrically coupled to the high-pass filter and the output driver, the driving stage circuit configured to receive a signal from the high-pass filter when the high-pass filter detects the electrostatic discharge event and further configured to shunt an input of the output driver to the second node in response to the signal from the high-pass filter, and a step-down circuit electrically coupled to the driving stage circuit and configured to bias the driving stage circuit.
摘要:
Die structures for electronic device packages and related fabrication methods are provided. An exemplary die structure includes a substrate having a first layer of semiconductor material including a semiconductor device formed thereon, a handle layer of semiconductor material, and a buried layer of dielectric material between the handle layer and the first layer. The die structure also includes a plurality of shunting regions in the first layer of semiconductor material, wherein each shunting region includes a doped region in the first layer that is electrically connected to the handle layer of semiconductor material, and a body region underlying the doped region that is contiguous with at least a portion of the first layer underlying a semiconductor device.
摘要:
Protection device structures and related fabrication methods are provided. An exemplary semiconductor protection device includes a first base region of semiconductor material having a first conductivity type, a second base region of semiconductor material having the first conductivity type and a dopant concentration that is less than the first base region, a third base region of semiconductor material having the first conductivity type and a dopant concentration that is greater than the second base region, an emitter region of semiconductor material having a second conductivity type opposite the first conductivity type within the first base region, and a collector region of semiconductor material having the second conductivity type. At least a portion of the second base region resides between the third base region and the first base region and at least a portion of the first base region resides between the emitter region and the collector region.
摘要:
Protection device structures and related fabrication methods are provided. An exemplary semiconductor protection device includes a base well region having a first conductivity type, an emitter region within the base well region having a second conductivity type opposite the first conductivity type, a collector region having the second conductivity type, a first floating region having the second conductivity type within the base well region between the emitter region and the collector region, and a second floating region having the first conductivity type within the base well region between the first floating region and the collector region. The floating regions within the base well region are electrically connected to reduce current gain and improve holding voltage.
摘要:
An integrated circuit is provided. The integrated circuit may include, but is not limited to, a first node, a second node configured to be coupled to ground, an output driver, and a electrostatic discharge circuit electrically coupled to the first node, the second node, and the output driver. The electrostatic discharge circuit may include, but is not limited a high-pass filter configured to detect an electrostatic discharge event at the first node, a driving stage circuit electrically coupled to the high-pass filter and the output driver, the driving stage circuit configured to receive a signal from the high-pass filter when the high-pass filter detects the electrostatic discharge event and further configured to shunt an input of the output driver to the second node in response to the signal from the high-pass filter, and a step-down circuit electrically coupled to the driving stage circuit and configured to bias the driving stage circuit.
摘要:
An ESD protection device is fabricated in a semiconductor substrate that includes a semiconductor layer having a first conductivity type. A first well implantation procedure implants dopant of a second conductivity type in the semiconductor layer to form inner and outer sinker regions. The inner sinker region is configured to establish a common collector region of first and second bipolar transistor devices. A second well implantation procedure implants dopant of the first conductivity type in the semiconductor layer to form respective base regions of the first and second bipolar transistor devices. Conduction of the first bipolar transistor device is triggered by breakdown between the inner sinker region and the base region of the first bipolar transistor device. Conduction of the second bipolar transistor device is triggered by breakdown between the outer sinker region and the base region of the second bipolar transistor device.
摘要:
An area-efficient, high voltage, dual polarity ESD protection device (200) is provided for protecting multiple pins (30, 40) against ESD events by using a plurality of stacked NPN devices (38, 48, 39) which have separately controllable breakdown voltages and which share one or common NPN devices (39), thereby reducing the footprint of the high voltage ESD protection circuits without reducing robustness and functionality.
摘要:
An electrostatic discharge (ESD) clamp (41, 51, 61, 71, 81, 91), coupled across input-output (I/O) (22) and common (GND) (23) terminals of a protected semiconductor SC device or IC (24), comprises, an ESD transistor (ESDT) (25) with source-drain (26, 27) coupled between the GND (23) and I/O (22), a first resistor (30) coupled between gate (28) and source (26) and a second resistor (30) coupled between ESDT body (29) and source (26). Paralleling the resistors (30, 32) are control transistors (35, 35′) with gates (38, 38′) coupled to one or more bias supplies Vb, Vb′. The main power rail (Vdd) of the device or IC (24) is a convenient source for Vb, Vb′. When the Vdd is off during shipment, handling, equipment assembly, etc., the ESD trigger voltage Vt1 is low, thereby providing maximum ESD protection when ESD risk is high. When Vdd is energized, Vt1 rises to a value large enough to avoid interference with normal circuit operation but still protect from ESD events. Parasitic leakage through the ESDT (25) during normal operation is much reduced.