Infineon Technologies Ag

Fausto Borghetti

Davide Ghedin

Alberto Trentin

Sang Min Lee

Gernot Unterweger

Fabio Fragiacomo

Ramdas Ugale

Stephan Cordes

Ramdas Rangnath Ugale

Michael Schrodi

Hector Moreno

Francesco Vaiti

A light control module (LCM) in accordance with one embodiment, includes terminals configured to receive a supply voltage, and a switching converter configured to receive the supply voltage and to provide an output voltage at an output node, wherein the output voltage and the supply voltage have different polarities. Further, the LCM includes an output terminal coupled to the output node of the switching converter and configured to sink a load current from a LED module.

Light control module for driving LED modules

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 is directed to circuits for controlling voltage from a voltage source to one or more light emitting diodes. The circuit includes a first transistor comprising a power switch that is configured to define a load current path from the voltage source to the one or more light emitting diodes. The circuit also includes a second transistor, which can be controlled based on the light emitting diodes, wherein the second transistor is configured to turn off when one or more of the lights emitting diodes exhibit an electoral short. The first transistor is configured to turn off in response to the second transistor turning off so as to provide short circuit protection for the circuit.

Circuits with short circuit protection for light emitting diodes

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 unit configured to receive an input signal from a power source and generate a first output signal comprising a first voltage, a charge pump configured to receive at least a portion of the first output signal from the power converter unit and generate a second output signal comprising a second voltage, and a linear regulator configured to receive the second output signal from the charge pump and generate a third output signal comprising a third voltage.

Circuit for providing power to two or more strings of LEDs

In an example, a circuit includes one or more switches, wherein the circuit is configured to receive a battery voltage from a battery, deliver an input voltage to a controller, deliver an output voltage, and receive signals from the controller. The signals may activate the one or more switches and deactivate the one or more switches and activating the one or more switches and deactivating the one or more switches may control the input voltage to the controller.

Growing community of inventors

Sant'Ambrogio di Valpolicella, Italy

Fausto Borghetti