Abstract: The present invention concerns an electrical installation or device equipped with a power supply unit comprising a voltage converter having primary and secondary parts respectively defining a primary side and a secondary side of this electrical installation or device. This power supply unit comprises a power management unit arranged on the primary side, the primary part of the converter being associated with a control circuit also arranged on the primary side and controlling the electrical energy flowing in the primary power path of the primary part. The control circuit receives from the power management unit at least a first control signal for switching OFF the electrical energy in the primary power path, the power supply unit entering a very low power mode (“Power-down” mode) when the first control signal is set to OFF so that the converter is not supplied anymore.

Abstract: The present invention concerns an electrical installation or device equipped with a power supply unit comprising a voltage converter having primary and secondary parts respectively defining a primary side and a secondary side of this electrical installation or device. This power supply unit comprises a power management unit arranged on the primary side, the primary part of the converter being associated with a control circuit also arranged on the primary side and controlling the electrical energy flowing in the primary power path of the primary part. The control circuit receives from the power management unit at least a first control signal for switching OFF the electrical energy in the primary power path, the power supply unit entering a very low power mode (“Power-down” mode) when the first control signal is set to OFF so that the converter is not supplied anymore.

Abstract: The present invention concerns an electrical installation or device equipped with a power supply unit comprising a voltage converter having primary and secondary parts respectively defining a primary side and a secondary side of this electrical installation or device. This power supply unit comprises a power management unit arranged on said primary side, the primary part of the converter being associated with a control circuit also arranged on said primary side and controlling the electrical energy flowing in the primary power path of said primary part. The control circuit receives from the power management unit at least a first control signal for switching OFF the electrical energy in said primary power path, said power supply unit entering a very low power mode (“Power-down” mode) when said first control signal is set to OFF so that the converter is not supplied anymore.

Abstract: The present invention concerns an electrical installation or device equipped with a power supply unit comprising a voltage converter having primary and secondary parts respectively defining a primary side and a secondary side of this electrical installation or device. This power supply unit comprises a power management unit arranged on said primary side, the primary part of the converter being associated with a control circuit also arranged on said primary side and controlling the electrical energy flowing in the primary power path of said primary part. The control circuit receives from the power management unit at least a first control signal for switching OFF the electrical energy in said primary power path, said power supply unit entering a very low power mode (“Power-down” mode) when said first control signal is set to OFF so that the converter is not supplied anymore.

Abstract: The present invention concerns an integrated circuit resistor structure (10) comprising a well (1) formed in a substrate (2), and having a first type of conductivity, and a diffusion zone (3) formed in said well (1), and having a second type of conductivity different from said first type of conductivity. Said well (1) is provided with first and second contact terminals (5B, 7B), so as to form a first resistor (Rwell) in said well (1), and said diffusion zone (3) is provided with third and fourth contact terminals (5A, 7A) so as to form a second resistor (Rdiff) in said diffusion zone (3). This structure further comprises means (11) for connecting external terminals (M, N) with said first, second, third and fourth contact terminals, so as to form a selected combination of the first and second resistors among a plurality of combinations.

Abstract: The present invention concerns an oscillator (20) intended to supply a periodic electric voltage (Vo) at a predetermined frequency (f). This oscillator includes: a reference source (23) able to provide a reference voltage (Vref), this reference source including a resistor (R) linked to said voltage; and supply means (24) able to receive the reference voltage and to supply said periodic voltage at said predetermined frequency, the supply means having a first temperature coefficient (&agr;24) so this frequency can vary under the influence of the temperature. This oscillator is characterised in that the resistor is formed to give the reference source a second temperature coefficient (&agr;23) equal to the first temperature coefficient, so that the temperature has the same influence on the reference voltage and on the supply means, which allows the periodic voltage to be supplied independently of the temperature.

Abstract: The present invention concerns a system 1 supplied by an electric power source, and able to operate in "sleep" mode, this system including a system clock 12, oscillation detection means 13 for monitoring the activity of the system clock, and means 16 for reactivating the system when the latter is in "sleep" mode. This system is characterised in that the reactivating means are internal to the system, and in that they are arranged to form, as soon as the system passes into "sleep" mode, an autonomous time base, to reactivate this system at the end of a predetermined time interval and, when the system is not in "sleep" mode, to fulfil a different function to that of time base and reactivation. An advantage of the reactivating means of such a system lies in the fact that they can operate only with a current of the order of 1 nA.