Infineon Technologies Ag

Alberto Trentin

Davide Ghedin

Fausto Borghetti

Sang Min Lee

Maurizio Galvano

Fabio Fragiacomo

Michael Schrodi

A power control circuit includes an input connection, an output connection, and a current sensor configured to generate a power signal corresponding to an electrical signal delivered from a power source to a load. The power control circuit is configured to receive, from a controller via the input connection, a control signal comprising a sequence of control signal pulses occurring at a control signal frequency and generate an output signal based on the power signal, the sequence of control signal pulses, and the control signal frequency. The power control circuit is configured to deliver, via the output connection, the output signal to control a gate driver circuit to manage the power signal delivered from the power source to the load.

Power control circuit for managing power delivered to a load based on a control signal and a current sensor signal

A device is configured to determine a switching pattern comprising a first time range for activating a first plurality of light emitting diodes (LEDs) of a LED module and a second time range for activating a second plurality of LEDs of the LED module. The first plurality of LEDs and the second plurality of LEDs are different. The device is further configured to determine, for each LED of the first plurality of LEDs, a respective timeslot of a plurality of timeslots of the first time range. The device is further configured to output an instruction to a switching device to cause the switching device to couple each LED of the first plurality of LEDs to a supply during the respective timeslot determined for the LED.

Controlling light emitting diodes for switching patterns

This disclosure includes systems, methods, and techniques for controlling delivery of power to one or more strings of light-emitting diodes (LEDs). For example, a circuit includes a power converter configured to generate an electrical current, a switching device, and a sensor. The sensor is configured to compare a magnitude of the electrical current to a threshold, and in response to the magnitude exceeding the threshold, cause the switching device to turn on in order to sink a portion of the electrical current to prevent the magnitude of the electrical current from exceeding the threshold. When the switching device is turned on, the electrical current is divided into an undesired electrical current that flows across the switching device and a desired electrical current that flows to the string of LEDs.

Growing community of inventors

Telve di Sopra, Italy

Alberto Trentin