LED RETROFIT DRIVER CIRCUIT AND METHOD OF OPERATING THE SAME

LED RETROFIT DRIVER CIRCUIT AND METHOD OF OPERATING THE SAME

A LED retrofit driver circuit (3) is provided, comprising at least an input (6) for receiving an operating voltage from a power supply (2), an output (8) for connection to one or more LED units (5), a power converter (7) connected with said input (6) and said output (8) and configured to provide a l...

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Hauptverfasser: VAEL, PHILIP, LOUIS, ZULMA, CLAESSENS, DENNIS, JOHANNES, ANTONIUS, EDDEANE, REDOUANE, JIANG, JACK, TOUSAIN, ROBERTUS, LEONARDUS
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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creator VAEL, PHILIP, LOUIS, ZULMA
CLAESSENS, DENNIS, JOHANNES, ANTONIUS
EDDEANE, REDOUANE
JIANG, JACK
TOUSAIN, ROBERTUS, LEONARDUS
description A LED retrofit driver circuit (3) is provided, comprising at least an input (6) for receiving an operating voltage from a power supply (2), an output (8) for connection to one or more LED units (5), a power converter (7) connected with said input (6) and said output (8) and configured to provide a lamp current (50) at said output (8) during operation in at least a first and a second operating state. To provide a versatile circuit (3), allowing operation with a variety of power supplies and under various load conditions, in said first operating state, the power converter (7) is adapted to switch between a high current generating mode (40), in which the power converter (7) is configured to draw current pulses from said power supply (2) to provide a first average input current (33a), and an OFF mode (42) in which no current is drawn from said power supply (2). In said second operating state, said power converter (7) is adapted at least to operate in a low current generating mode (41), in which the power converter (7) is configured to draw a current from said power supply (2) to provide a second average input current (33b) which is lower than said first average input current (33a).
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subjects ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
title LED RETROFIT DRIVER CIRCUIT AND METHOD OF OPERATING THE SAME
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