Abstract: A controller circuit for a set of light emitting diodes (LEDs) includes a linear current source, channel circuitry, and supervisor circuitry. The linear current source is configured to regulate a first current from a supply along a first series path to the set of LEDs. The channel circuitry is configured to control a second current from the supply along a second series path to the set of LEDs, the second series path being in parallel with the first series path and the second series path comprising a drop element coupled in series with the supply and the set of LEDs. The supervisor circuitry is configured to regulate a total current supplied to the set of LEDs using the linear current source and the channel circuitry, the total current comprising the first current and the second current.

Abstract: A control circuit may be configured to control light emitting diode (LED) driver circuits. The control circuit may be configured to generate a multicast of pixel intensity values based on data in memory or data received from a data source, and output the multicast on an interface, which may comprise a one-wire uni-directional interface. In some examples, a plurality of drivers may receive the multicast, and each of the plurality of drivers may drive different sets of LEDs based on the multicast.

Abstract: This disclosure includes systems, methods, and techniques for detecting one or more short connections in a plurality of light-emitting diode (LED) channels. For example, a circuit includes processing circuitry configured to control a plurality of driving devices in order to cause a pair of LED channels of the plurality of LED channels to operate in a first state during a first period of time and operate in a second state during a second period of time. Additionally, the processing circuitry is configured to compare a first electrical signal corresponding to the first state of the pair of LED channels and a second electrical signal corresponding to the second state of the pair of LED channels and determine, based on the comparison of the first electrical signal and the second electrical signal, if a short connection exists between the pair of LED channels.

Abstract: A method for driving a set of light emitting diodes (LEDs) may include receiving a write access frame by a driver via a bus configured for connection with a controller and the driver. The write access frame includes brightness information. The method may further include controlling, by the driver, the set of LEDs based on the brightness information and determining, by the driver, safety information while controlling the set of LEDs based on the brightness information. The method may further include outputting, by the driver and at the bus, the safety information to acknowledge receipt of the write access frame.

Abstract: This disclosure includes systems, methods, and techniques for detecting one or more short connections in a plurality of light-emitting diode (LED) channels. For example, a circuit includes processing circuitry configured to control a plurality of driving devices in order to cause a pair of LED channels of the plurality of LED channels to operate in a first state during a first period of time and operate in a second state during a second period of time. Additionally, the processing circuitry is configured to compare a first electrical signal corresponding to the first state of the pair of LED channels and a second electrical signal corresponding to the second state of the pair of LED channels and determine, based on the comparison of the first electrical signal and the second electrical signal, if a short connection exists between the pair of LED channels.

Abstract: According to one exemplary embodiment, a light-emitting diode driver is provided, having: a differential first interface, a single-ended second interface, wherein the light-emitting diode driver is configured to use the first interface to communicate according to a bidirectional differential bus communication protocol as a slave, to use the second interface to communicate according to a single-ended bus protocol and to transpose signals between the first interface and the second interface, and to supply one or more light-emitting diodes with electric power on the basis of signals received via the first interface.

Abstract: A controller circuit for a set of light emitting diodes (LEDs) includes a linear current source, channel circuitry, and supervisor circuitry. The linear current source is configured to regulate a first current from a supply along a first series path to the set of LEDs. The channel circuitry is configured to control a second current from the supply along a second series path to the set of LEDs, the second series path being in parallel with the first series path and the second series path comprising a drop element coupled in series with the supply and the set of LEDs. The supervisor circuitry is configured to regulate a total current supplied to the set of LEDs using the linear current source and the channel circuitry, the total current comprising the first current and the second current.

Abstract: A controller circuit for a set of light emitting diodes (LEDs) includes a linear current source, channel circuitry, and supervisor circuitry. The linear current source is configured to regulate a first current from a supply along a first series path to the set of LEDs. The channel circuitry is configured to control a second current from the supply along a second series path to the set of LEDs, the second series path being in parallel with the first series path and the second series path comprising a drop element coupled in series with the supply and the set of LEDs. The supervisor circuitry is configured to regulate a total current supplied to the set of LEDs using the linear current source and the channel circuitry, the total current comprising the first current and the second current.

Abstract: According to one exemplary embodiment, a light-emitting diode driver is provided, having: a differential first interface, a single-ended second interface, wherein the light-emitting diode driver is configured to use the first interface to communicate according to a bidirectional differential bus communication protocol as a slave, to use the second interface to communicate according to a single-ended bus protocol and to transpose signals between the first interface and the second interface, and to supply one or more light-emitting diodes with electric power on the basis of signals received via the first interface.

Abstract: An internal combustion engine includes a piston reciprocally moving in at least one cylinder. An intake valve controls the supply of fresh air into a power chamber defined within the cylinder by the moving piston. An ancillary chamber is fluidly connected with the power chamber via a flow-through valve. An auxiliary piston is reciprocally movable in the ancillary chamber and determines the volume of the ancillary chamber. A fuel supply valve introduces fuel into the ancillary chamber. The flow-through valve, the fuel supply valve and the auxiliary piston are moved such that no fresh air from the power chamber goes into the ancillary chamber and such that fuel is expelled from the ancillary chamber into the power chamber via the flow-through valve for combustion with fresh air compressed in the power chamber.

Abstract: In one example, a method includes receiving, by a power switching device and via a connector of the power switching device, a signal that causes the power switching device to transition from a first operating mode to a second operating mode in which the power switching device consumes less current than the first operating mode. In this example, the method also includes, responsive to determining, while the power switching device is in the second operating mode, an occurrence of one or more events, outputting, by the power switching device and via the same connector of the power switching device, a signal that indicates the occurrence of the one or more events.

Abstract: Devices and methods are provided which comprise detecting an irregular condition at a control terminal of a power switch device.

Abstract: Devices and methods comprising a switch and an overload detection are disclosed. When an overload detection is detected, a first retry scheme followed by a second retry scheme different from the first retry scheme may be applied. If the overload condition persists, the switch may be disabled.

Abstract: Power switch devices having an overload limit are provided. The overload limit may be adjusted based on an inductance coupled with the power switch device.

Abstract: A power circuit is described that includes a switch coupled to a resistive-inductive-capacitive load and a driver coupled to the switch. The driver is configured to detect an emergency event within the power circuit. After detecting the emergency event within the power circuit, the driver is further configured to perform a controlled emergency switch-off operation of the switch to minimize the maximum temperature of the switch during the detected emergency event and switch-off operation.

Abstract: An internal combustion engine includes a piston reciprocally moving in at least one cylinder. An intake valve controls the supply of fresh air into a power chamber defined within the cylinder by the moving piston. An ancillary chamber is fluidly connected with the power chamber via a flow-through valve. An auxiliary piston is reciprocally movable in the ancillary chamber and determines the volume of the ancillary chamber. A fuel supply valve introduces fuel into the ancillary chamber. The flow-through valve, the fuel supply valve and the auxiliary piston are moved such that no fresh air from the power chamber goes into the ancillary chamber and such that fuel is expelled from the ancillary chamber into the power chamber via the flow-through valve for combustion with fresh air compressed in the power chamber.

Abstract: Devices and methods are provided which comprise detecting an irregular condition at a control terminal of a power switch device.

Abstract: In one example, a method includes receiving, by a power switching device and via a connector of the power switching device, a signal that causes the power switching device to transition from a first operating mode to a second operating mode in which the power switching device consumes less current than the first operating mode. In this example, the method also includes, responsive to determining, while the power switching device is in the second operating mode, an occurrence of one or more events, outputting, by the power switching device and via the same connector of the power switching device, a signal that indicates the occurrence of the one or more events.

Abstract: Devices and methods comprising a switch and an overload detection are disclosed. When an overload detection is detected, a first retry scheme followed by a second retry scheme different from the first retry scheme may be applied. If the overload condition persists, the switch may be disabled.

Abstract: In a method for operating a reciprocating-piston internal combustion engine having internal exhaust gas energy recuperation, a cylinder head recuperator is heated up during an exhaust cycle by hot exhaust gas flowing through the cylinder head recuperator prior to being exhausted from the cylinder via an exhaust valve. During an intake cycle, fresh charge flows into the power chamber of the cylinder by passing around a cylinder head recuperator. During the subsequent compression stroke, the cylinder head recuperator is moved out of a recess formed in the cylinder head such that some of the compressed charge can flow into the recess. Near the end of the compression stroke, the cylinder head recuperator is moved back into the recess so that compressed charge located in the recess is forced to flow through the hot cylinder head recuperator and thereby be heated up immediately before ignition of the compressed charge.