摘要:
An electronic circuit includes a switched-mode power supply and a linear voltage regulation circuit having an input stage, a first output stage, and a second output stage. A first load is capable of being powered either by the switched-mode power supply in series with the regulation circuit or by the regulation circuit without the switched-mode power supply.
摘要:
A method is used to control an electronic device that includes a switching unit having a main MOS transistor having a substrate, a first conducting electrode and a second conducting electrode coupled to an output terminal. The method includes controlling the main transistor in such a way as to put it into an on state or an off state such that, when the main transistor is in the on state, the substrate and the first conducting electrode of the main transistor are connected to an input terminal and, when the main transistor is in the off state, the first conducting electrode of the main transistor is isolated from the input terminal and a first bias voltage is applied to the first conducting electrode and a second bias voltage is applied to the substrate of the main transistor.
摘要:
A method is provided for controlling a sample and hold circuit that includes a switching module coupled to a storage capacitor. A circuit external to the sample and hold circuit of generates at least one main current representative of at least one leakage current of the switching module in its off state. The at least one main current is delivered to at least one auxiliary capacitor. An initial pulse signal is generated from the charging and discharging of the at least one auxiliary capacitor. The sampling phase of the sample and hold circuit is triggered at the rate of the pulses of a pulse signal derived from the initial pulse signal.
摘要:
Integrated circuit, comprising at least one ring oscillator including a succession of inverters looped back to form the ring, the at least one oscillator being intended to operate at a desired output frequency and configured so that the inverter transistors operate in or near their temperature inversion zone.
摘要:
A method includes selecting at least one first voltage that defines subsets of DC voltages from among an ordered set of DC voltages, comparing the first voltage with a DC reference voltage, selecting one of the subsets based on a result of the comparing, and comparing each voltage of the selected subset with the reference voltage.
摘要:
A method can be used for managing the operation of a phase-locked loop. The loop includes an oscillator voltage controlled by a control signal and a phase comparator receiving a reference signal and a feedback signal which arises from the output signal of the oscillator. The method includes a detection of a possible absence of transitions on the feedback signal for a first duration and, in response to such an absence, a forcing of the lowering of the voltage of the control signal at least until a reappearance of transitions on the feedback signal.
摘要:
An integrated processing unit is supplied by a power supply voltage present at the terminals of a capacitor configured to supply a maximum permissible voltage drop. A periodic pulse signal is generated having a period that is less than or equal to a current period determined from the maximum permissible voltage drop and a current consumption of the processing unit. The power supply voltage is compared with a threshold voltage at the pulse rate of the periodic pulse signal. A control signal generated from that comparison is delivered to the processing unit and has a first value when the power supply voltage is greater than or equal to the threshold voltage and a second value when the power supply voltage is less than the threshold voltage.
摘要:
A method is provided for controlling a sample and hold circuit that includes a switching module coupled to a storage capacitor. A circuit external to the sample and hold circuit of generates at least one main current representative of at least one leakage current of the switching module in its off state. The at least one main current is delivered to at least one auxiliary capacitor. An initial pulse signal is generated from the charging and discharging of the at least one auxiliary capacitor. The sampling phase of the sample and hold circuit is triggered at the rate of the pulses of a pulse signal derived from the initial pulse signal.
摘要:
A method is used to control an electronic device that includes a switching unit having a main MOS transistor having a substrate, a first conducting electrode and a second conducting electrode coupled to an output terminal. The method includes controlling the main transistor in such a way as to put it into an on state or an off state such that, when the main transistor is in the on state, the substrate and the first conducting electrode of the main transistor are connected to an input terminal and, when the main transistor is in the off state, the first conducting electrode of the main transistor is isolated from the input terminal and a first bias voltage is applied to the first conducting electrode and a second bias voltage is applied to the substrate of the main transistor.
摘要:
In an embodiment, a method includes: receiving a main supply voltage; generating a first regulated output voltage with a DC-DC converter; providing the main supply voltage to a driver of a control terminal of an output transistor of an LDO; receiving, at an input terminal of the LDO, the first regulated output voltage; generating, at an output terminal of the LDO, a second regulated output voltage from the first regulated output voltage; and when the main supply voltage falls below a predetermined threshold, discharging a capacitor coupled to the input terminal of the LDO by activating a switch coupled to the input terminal of the LDO.