Abstract: Aspects of the present disclosure provide a multi-tier semiconductor structure. For example, the multi-tier semiconductor structure can include a first power delivery network (PDN) structure, and a first semiconductor device tier disposed over and electrically connected to the first PDN structure. The multi-tier semiconductor structure can further include a signal wiring tier disposed over and electrically connected to the first semiconductor device tier, a second semiconductor device tier disposed over and electrically connected to the signal wiring tier, and a second PDN structure disposed over and electrically connected to the second semiconductor device tier. The multi-tier semiconductor structure can further include a through-silicon via (TSV) structure electrically connected to the signal wiring tier, wherein the TSV structure penetrates the second PDN structure.

Abstract: Aspects of the present disclosure provide a multi-tier semiconductor structure. For example, the multi-tier semiconductor structure can include a first power delivery network (PDN) structure, and a first semiconductor device tier disposed over and electrically connected to the first PDN structure. The multi-tier semiconductor structure can further include a signal wiring tier disposed over and electrically connected to the first semiconductor device tier, a second semiconductor device tier disposed over and electrically connected to the signal wiring tier, and a second PDN structure disposed over and electrically connected to the second semiconductor device tier. The multi-tier semiconductor structure can further include a through-silicon via (TSV) structure electrically connected to the signal wiring tier, wherein the TSV structure penetrates the second PDN structure.

Abstract: Aspects of the present disclosure provide a multi-tier semiconductor structure. For example, the multi-tier semiconductor structure can include a lower semiconductor device tier, and a lower signal wiring structure electrically connected to the lower semiconductor device tier. The multi-tier semiconductor structure can further include a primary power delivery network (PDN) structure disposed over the lower semiconductor device tier and the lower signal wiring structure and electrically connected to the lower semiconductor device tier. The multi-tier semiconductor structure can further include an upper semiconductor device tier disposed over and electrically connected the first PDN structure, and an upper signal wiring structure disposed over the primary PDN structure and electrically connected to the upper semiconductor device tier.

Abstract: A semiconductor device includes a first pair of transistors over a substrate. The first pair of transistors includes a first transistor having a first gate structure over the substrate and a second transistor having a second gate structure stacked over the first transistor. A second pair of transistors is stacked over the first pair of transistors, resulting in a vertical stack perpendicular to a working surface of the substrate. The second pair of transistors includes a third transistor having a third gate structure stacked over the second transistor and a fourth transistor having a fourth gate structure stacked over the third transistor. The third gate structure extends from a central region of the vertical stack to a first side of the vertical stack. The second gate structure and the fourth gate structure extend from the central region to a second side of the vertical stack opposite the first side.

Abstract: Measures, including apparatus, methods and computer program products, for generating an output signal with a defined waveform shape are provided. A plurality of switched inductor arrangements are each connected in parallel to generate a combined output signal. Each of the switched inductor arrangements are selectively enabled, wherein the number of enabled switched inductor arrangements is varied to define a waveform shape of the combined output signal.

Abstract: A driver circuit for driving an electrical motor coil is provided which comprises combined switched inductance boost voltage converter circuitry and switched inductance buck voltage converter circuitry. An input node of the driver circuit is provided to be coupled with the electrical motor coil, which provides the inductive element of both the boost and buck circuitry. Further the boost and buck circuitry share a storage capacitor, which provides the capacitive element of each circuitry, and a voltage developed across the storage capacitor by the boost circuitry forms an input of the switched inductance buck voltage converter circuitry.

Abstract: An electrical motor system comprises a switched reluctance electrical motor comprising a rotor section and a stator section, the rotor section comprising a plurality of rotor teeth and the stator section comprising a plurality of stator teeth, the stator teeth wound with respective coils. Coil driver circuitry is coupled to the coils of the stator teeth and controls an independent phase of electrical power to each coil of the plurality of stator teeth. The coils of the stator teeth each have an inductance which absorbs electrical energy provided to that coil by the coil driver circuitry and subsequently releases at least a portion of the electrical energy back to the coil driver circuitry when that coil is not being actively driven by the coil driver circuitry.

Abstract: An electric motor apparatus comprises a rotor and a stator formed of at least two stator components, each of the at least two stator components having a substantially hollow cylindrical form. The rotor is mounted within the at least two stator components on a rotational mounting such that the rotor can rotate about a longitudinal central axis with respect to the stator. Each of the at least two stator components has at least two protrusions arranged at different circumferential points on an inner surface of the at least two stator components. Each protrusion has a winding mounted thereon. Control circuitry generates control signals to control power supplied to the windings on each stator component such that power can be controlled to each stator component independently.

Abstract: An electric motor apparatus and method of controlling the same are provided. The electric motor apparatus includes a stator and a rotor rotationally mounted coaxially with the stator; an intermediate screen having a magnetic material and rotationally mounted between the stator and the rotor to provide magnetic screening between the rotor and the stator; and control circuitry to control power supplied to windings on the rotor and the stator in dependence upon a desired output rotational speed.

Abstract: Measures, including apparatus, methods and computer program products, for generating an output signal with a defined waveform shape are provided. A plurality of switched inductor arrangements are each connected in parallel to generate a combined output signal. Each of the switched inductor arrangements are selectively enabled, wherein the number of enabled switched inductor arrangements is varied to define a waveform shape of the combined output signal.

Abstract: A driver circuit for driving an electrical motor coil is provided which comprises combined switched inductance boost voltage converter circuitry and switched inductance buck voltage converter circuitry. An input node of the driver circuit is provided to be coupled with the electrical motor coil, which provides the inductive element of both the boost and buck circuitry. Further the boost and buck circuitry share a storage capacitor, which provides the capacitive element of each circuitry, and a voltage developed across the storage capacitor by the boost circuitry forms an input of the switched inductance buck voltage converter circuitry.

Abstract: A driver circuit for driving an electrical motor coil is provided which comprises combined switched inductance boost voltage converter circuitry and switched inductance buck voltage converter circuitry. An input node of the driver circuit is provided to be coupled with the electrical motor coil, which provides the inductive element of both the boost and buck circuitry. Further the boost and buck circuitry share a storage capacitor, which provides the capacitive element of each circuitry, and a voltage developed across the storage capacitor by the boost circuitry forms an input of the switched inductance buck voltage converter circuitry.

Abstract: An electrical motor system comprises a switched reluctance electrical motor comprising a rotor section and a stator section, the rotor section comprising a plurality of rotor teeth and the stator section comprising a plurality of stator teeth, the stator teeth wound with respective coils. Coil driver circuitry is coupled to the coils of the stator teeth and controls an independent phase of electrical power to each coil of the plurality of stator teeth. The coils of the stator teeth each have an inductance which absorbs electrical energy provided to that coil by the coil driver circuitry and subsequently releases at least a portion of the electrical energy back to the coil driver circuitry when that coil is not being actively driven by the coil driver circuitry.

Abstract: A driver circuit for driving an electrical motor coil is provided which comprises combined switched inductance boost voltage converter circuitry and switched inductance buck voltage converter circuitry. An input node of the driver circuit is provided to be coupled with the electrical motor coil, which provides the inductive element of both the boost and buck circuitry. Further the boost and buck circuitry share a storage capacitor, which provides the capacitive element of each circuitry, and a voltage developed across the storage capacitor by the boost circuitry forms an input of the switched inductance buck voltage converter circuitry.

Abstract: An electric motor apparatus comprises a rotor and a stator formed of at least two stator components, each of the at least two stator components having a substantially hollow cylindrical form. The rotor is mounted within the at least two stator components on a rotational mounting such that the rotor can rotate about a longitudinal central axis with respect to the stator. Each of the at least two stator components has at least two protrusions arranged at different circumferential points on an inner surface of the at least two stator components. Each protrusion has a winding mounted thereon. Control circuitry generates control signals to control power supplied to the windings on each stator component such that power can be controlled to each stator component independently.

Abstract: An electric motor apparatus comprising: a rotor; and a stator formed of at least two stator components, each of the at least two stator components having a substantially hollow cylindrical form. The rotor is mounted within the at least two stator components on a rotational mounting such that the rotor can rotate about a longitudinal central axis with respect to the stator. Each of the at least two stator components comprising at least two protrusions arranged at different circumferential points on an inner surface of the at least two stator components, each of the at least two protrusions having a winding mounted thereon; and control circuitry configured to generate control signals to control power supplied to the windings on each of the at least two stator components, such that power can be controlled to each of the at least two stator components independently of each other.

Abstract: An electric motor apparatus and method of controlling the same are provided. The electric motor apparatus includes a stator and a rotor rotationally mounted coaxially with the stator; an intermediate screen having a magnetic material and rotationally mounted between the stator and the rotor to provide magnetic screening between the rotor and the stator; and control circuitry to control power supplied to windings on the rotor and the stator in dependence upon a desired output rotational speed.

Abstract: An electric motor apparatus comprising: a stator component and a rotor component rotationally mounted coaxially with and within the stator component. The stator component and the rotor component each comprise windings configured to generate an electromagnetic field from an electric current. The electric motor further comprises an intermediate screening component rotationally mounted between the stator component and the rotor component and configured to provide at least some magnetic screening between the rotor component and the stator component.

Abstract: An electric motor apparatus comprising: a rotor; and a stator formed of at least two stator components, each of the at least two stator components having a substantially hollow cylindrical form. The rotor is mounted within the at least two stator components on a rotational mounting such that the rotor can rotate about a longitudinal central axis with respect to the stator. Each of the at least two stator components comprising at least two protrusions arranged at different circumferential points on an inner surface of the at least two stator components, each of the at least two protrusions having a winding mounted thereon; and control circuitry configured to generate control signals to control power supplied to the windings on each of the at least two stator components, such that power can be controlled to each of the at least two stator components independently of each other.

Abstract: An electric motor apparatus comprising: a stator component and a rotor component rotationally mounted coaxially with and within the stator component. The stator component and the rotor component each comprise windings configured to generate an electromagnetic field from an electric current. The electric motor further comprises an intermediate screening component rotationally mounted between the stator component and the rotor component and configured to provide at least some magnetic screening between the rotor component and the stator component.