Selective power supply device for incandescent lamp or light-emitting diode
AssigneesSTMicroelectronics (Alps) SAS, STMicroelectronics S.r.l., Stmicroelectronics Application GmbH
InventorsPhilippe Sirito-Olivier, Giovanni Luca Torrisi, Manuel Gaertner, Fritz Burkhardt
Life of this patent
Estimating the term…
Abstract
The power supply device comprises a supply transistor commanded by a command signal and providing electric power to a lighting module, and a driving means configured to selectively generate, depending on an instruction signal representative of the structure of said at least one lighting module, a first command signal able to command the supply transistor into an ohmic regime, a second command signal able to command the supply transistor into a pulse width modulation regime involving an alternation of ohmic regimes and blocked regimes, and a third command signal able to command the supply transistor into a saturated regime.
Claims16
A power supply device, comprising:
- a supply transistor having a control electrode that is configured to receive a command signal and conduction electrodes that are respectively coupled to a supply terminal configured to receive a supply voltage and to an output terminal configured to provide electric power to at least one lighting module having a structure corresponding to one of an incandescent lamp structure or a light-emitting diode structure, and
- a driving circuit configured to selectively generate, depending on an instruction signal representative of the structure of said at least one lighting module, a first command signal causing the supply transistor to operate in an ohmic regime, a second command signal causing the supply transistor to operate in a pulse width modulation regime involving an alternation of ohmic regimes and blocked regimes, and a third command signal causing the supply transistor to operate in a saturated regime.
A lighting system, comprising:
- a power supply device, and
- at least one lighting module having an incandescent lamp structure or a light-emitting diode structure, wherein the at least one lighting module is coupled to an output of the power supply device, and
- wherein the power supply device comprises:
- a supply transistor having a control electrode that is configured to receive a command signal and conduction electrodes that are respectively coupled to a supply terminal configured to receive a supply voltage and to an output terminal configured to provide electric power to at least one lighting module having a structure corresponding to one of an incandescent lamp structure or a light-emitting diode structure, and
- a driving circuit configured to selectively generate, depending on an instruction signal representative of the structure of said at least one lighting module, a first command signal causing the supply transistor to operate in an ohmic regime, a second command signal causing the supply transistor to operate in a pulse width modulation regime involving an alternation of ohmic regimes and blocked regimes, and a third command signal causing the supply transistor to operate in a saturated regime.
Dependencies are inferred from the claim text.