Koninklijke Philips Corporation N.v.

Philips Lighting Holding B.v.

Signify Holding B.v.

Machiel Antonius Martinus Hendrix

Toni Lopez

Julia Delos Ayllon

Eduardo-Jose Alarcon-Cot

Wilhelmus Hinderikus Maria Langeslag

Arnold Willem Buij

Jacobus Josephus Leijssen

Josephus Adrianus Maria Van Erp

Roelf Van Der Wal

Harald Josef Günther Radermacher

Reinhold Elferich

Marcel Beij

Christian Hattrup

Ulrich Boeke

Eugen Jacob De Mol

Johannes Hendrik Wessels

Ronald Hans Van Der Voort

Jorge Luiz Duarte

Antonius Henricus Peterus Johannes Habraken

Andrew Kotsopoulos

Melanie Maria Jeanne Anna Michon

Julià Delos AYLLÓN

Toni López

A driver for driving a load, wherein the driver comprises a dual-boost converter comprising an output capacitance comprising a first output capacitor connected in series with a second output capacitor, a first switch connected to a power input stage via a first inductor and arranged for controlling charging of said first output capacitor via a first diode and a second switch, connected in series with said first switch, and connected to the power input stage via a second inductor and arranged for controlling charging of said second output capacitor via a second diode; wherein a centre tap of said in series connected first and second output capacitor is connected to a centre tap of said in series connected first and second switch.

Driver for a load, as well as a corresponding light emitting diode, LED, based lighting device and a method

An electronic module comprising an input capacitor connected between a first and second node; a first and second switch connected in series between the first and second node and the second node, in parallel with the input capacitor, and defining an intermediate node at their interconnection; a voltage regulator configured for receiving power from the input capacitor and for providing output power at a configurable voltage (out) between an output node and the second node. A multi-output power supply system comprising three such modules. A LED-driver comprising such module. A multi-color LED driver comprising three modules. A solid state lighting device comprising three modules and three LEDs.

Hybrid switched capacitor circuit with automatic charge balancing

Power conversion device for supplying a load with a PWM signal, comprising an inductive filter having at least an output configured to be connected to the load, the device comprising: a power conversion module supplied by an input voltage and configured for providing a plurality of output signals wherein one of the plurality of output signals is supplied to the filter; a conversion ratio control stage coupled to the power conversion module; and a controller configured to: determine a requested conversion ratio based on the input voltage and a target reference voltage; and based on the requested conversion ratio, control the conversion ratio control stage to operate in either a first operating mode, whereby the power conversion module provides the output signals in accordance with a first conversion ratio, or a second operating mode, whereby the power conversion module provides the output signals in accordance with a second conversion ratio.

Power conversion device

The current invention relates to a driver for driving one or a plurality of LEDs (D, D), comprising at least one driving unit () adapted to be supplied with a differential voltage, between one first bias voltage (VB) and one second bias voltage (VB), the differential voltage being adapted to be equal or larger than the largest expected variations (&#x394;VF) of the forward voltage of said one or a plurality of LEDs (D, D). Another aspect of the invention relates to an integrated package comprising at least an LED and associated driving unit (). Another aspect of the invention relates to a light module comprising a plurality of LEDs (D, D) and associated driving units ().

Light emitting diode driver with differential voltage supply

A system for supplying a load comprising: an input inductor configured to receive an input voltage, a selection module connected to the inductor via a switching node, and a multi-level half-bridge stage comprising a plurality of half-bridge stages, each half-bridge stage comprising a pair of switches connected between a switching node; a power combining stage coupled to each half-bridge stage using parallel bus voltage lines output from the multi-level half-bridge stage, the power combining stage configured to output a voltage to the load; and a controller configured, based on the input voltage, to selectively control a half-bridge stage to operate in a half-bridge mode to provide a stepped-up voltage on a bus voltage line, wherein the controller is further configured to control the power combining stage to provide a voltage between the bus voltage lines and the sum of these voltages is higher than a peak of the input voltage.

The current invention relates to a power conversion device (), for supplying a load () with a PWM signal through an inductive output filter (). The power conversion device () comprises a power conversion module () supplied by a DC input voltage (Vin) and is configured for providing a plurality of output signals (PWM, . . . , PWMn) having a level amplitude that is a fraction of the input voltage (Vin) level. Each output signal is floating with a bias component equally split in a plurality of steps ranging from a determined lowest fraction level amplitude to a determined highest fraction level amplitude. The power conversion device () further comprises a multiplexer () receiving as a plurality of inputs the plurality of output signals (PWM, . . . , PWMn). The multiplexer is configured for outputting one output signal (PWMx) selected from the plurality of inputs, whereby the output signal (PWMx) of the multiplexer () is connected to the output filter ().

Compact power conversion device with continuous output regulation range

The current invention relates to a LED driver () for driving at least two LED strings () comprising: a dual output power converter () for converting an input voltage (Vin) into two different output voltages for driving two sets of said at least two LED strings (), a controller () for controlling the dual output power converter () based on at least one input set point, the dual output converter () comprising a switched capacitor converter comprising a plurality of switches, a plurality of capacitors, the outputs of the dual output power converter () being connected to internal nodes of the dual power converter (), the controller () being further adapted to deliver PWM output control signals for driving the switches, the duty cycle of which being a function of said at least one input set point. The invention also relates to a lighting system () comprising such a driver ().

Compact driver for a light emitting diode having an integrated dual output

The current invention relates to a driver () for driving at least one main load and one auxiliary load comprising: a power converter () adapted to convert an input voltage (Vin) into at least one main output voltage provided through a main output () for driving said main load, and at least one auxiliary output DC voltage through an auxiliary output () for supplying said auxiliary load, a controller () adapted to control the main output based on at least one input set point, wherein the power converter () comprises a switched capacitor converter comprising a plurality of switches and a plurality of capacitors, the main output () being connected to at least one internal node of the power converter (), the auxiliary output () being connected to a DC node of the power converter ().

Compact driver for a light emitting diode having an auxiliary output

A switched mode power supply assembly () is described, comprising at least two switched mode power supply units () coupled to each other in parallel; each power supply unit () having an output stage () capable of selectively operating in a first mode wherein its output signal (I) is increasing and operating in a second mode wherein its output signal (I) is decreasing; a control device () receiving mode switch control signals from all power supply units (); wherein the control device (), if it finds that the actual phase relationship between two power supply units deviates from an optimal phase relationship, is designed to generate synchronising control signals for at least one power supply unit (), effectively changing the timing of at least one mode switch moment, such that the deviation between the actual phase relationship and said optimal phase relationship is reduced.

Switched mode power supply including power supply units and controller

A switched mode power supply assembly that has a plurality of power supply modules cyclically coupled to each other. Each power supply module has a synchronization control module for generating a synchronization control signal for a next neighboring module and for receiving a synchronization control signal from a previous neighboring module to ensure interleaved operation of all modules.

Interleaved switching converters in ring configuration

In a system for the conversion between DC power and AC power, including a buffercapacitor and a controllable converting arrangement, said conversion is controlled by a power control quantity that in turn depends on a first component assuring a balance between DC power and AC power and a second component indicating a change in energy stored in the buffer capacitor on a predetermined sampling time instant in the cycle of the voltage ripple on the buffer capacitor.

Inverter

A boost-converter comprising an inductor, a switch operated by a high-frequency control signal with a frequency f and a diode, is equipped with a further switch operated by a high-frequency control signal with a frequency f and a further diode. The further switch and the further diode enable the conductor to carry current in two directions in each period of the control signal. A high power factor and low THD can be obtained while the frequency f can be maintained at a constant value over a wide range of the amplitude of the input voltage. Hard switching is prevented.

DC&mdash;DC converter

In an inverter for operating a discharge lamp by means of an AC current comprising two switching elements, the effect of hard switching is counteracted by means of a snubber comprising two inductive elements and at least two diodes.

Low loss operating circuit for a discharge lamp

A circuit for measuring the power supplied by a voltage source supplying a sine-shaped voltage by averaging the multiplication of the instantaneous value of the current supplied by the voltage source and a square-wave that is synchronized with the sine-shaped voltage, and by multiplying the result by the actual value of the voltage.

Electronic device

A lamp is operated by means of a DC-AC converter provided with switches and generating an AC current at a high frequency. In each half period of the lamp current, the voltage across the lamp is reversed during an adjustable time interval. The lamp can be dimmed without instabilities by adjusting the time interval.

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Eindhoven, Netherlands

Machiel Antonius Martinus Hendrix