Stmicroelectronics S.a.

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Exagan

Enerstone

Stmicroelectronics France

Abconsulting

Alain Bailly

Dominique Bergogne

Laurent Guillot

Jean Barret

Thierry Sutto

Alexandre Chureau

Lionel Esteve

The present invention concerns an electronic device comprising: a first switch (T) having a single voltage blocking direction; a second switch (T) electrically in series with the first switch between two nodes () of application of a DC voltage; and a module configured to supply the second switch with a control signal, referenced to the potential (COM) of a midpoint () between the two switches.

Power converter comprising at least two switches and a module for supplying control signals thereto

The present description concerns a device for delivering a voltage from an AC voltage, comprising a capacitive element (), two switches (H,L) in a half-bridge between terminals of the capacitive element (); terminals () of application of the AC voltage; a transformer (), comprising a first winding () coupling to a junction node () between the switches (H,L) one of the terminals () of application of the AC voltage; and one or a plurality of circuits (), configured to switch the switches (H,L) and receive an AC current (I) flowing through a second winding () of the transformer () and regulate the voltage delivered by the device by acting on a frequency of said AC current and/or on a phase shift of said AC current with respect to its reception.

Device for supplying power from an AC voltage

A half-bridge electronic device comprises a high level switch and a low level switch in series that are connected at a central point, and a first and a second synchronization system: &#x2022; the first system comprising a first detection circuit configured to interpret a variation, following a falling edge, of the voltage (Vm) at the central point, and the first system being configured to generate a first synchronization signal (ATON-LS) for activating the low level switch; &#x2022; the second system comprising a second detection circuit configured to interpret a variation, following a rising edge, of the voltage (Vm) at the central point, and the second system being configured to generate a second synchronization signal (ATON-HS) for activating the high level switch.

Half-bridge electronic device comprising two systems for minimizing dead-time between the switching operations of a high level switch and of a low level switch

A system comprises an electric battery having at least four elementary cells in series and at least two balancing modules each having first and second nodes connected by at least three cells of the battery, and a third node connected to an intermediate point of the series-association of the at least three cells, in which at least one of the first and second nodes of each module is not common to a first or second node of another module.

Charge balancing in an electric battery

The invention concerns a circuit for detecting an overload in a load supplied by a switched-mode power supply, comprising: a first comparator of a first voltage based on the supply voltage of the load relative to a first threshold, supplying a regulating signal to a pulse generator controlling the switched-mode power supply; a second comparator of a second voltage relative to a second threshold, supplying a signal indicating the presence of an overload; and means for automatically controlling said second voltage by a third threshold lower than the second and higher than the first, and for deactivating the second comparator as long as said automatic control is maintained.

Switched-mode power supply regulation

The invention concerns a control circuit () of a switch () chopping a voltage supply of a primary winding of a power converter transformer, comprising means () for detecting the current in the switch in closed state after a predetermined time following each closure of said switch, and a comparator () of said current relative to a threshold (Ilim), the result of said comparator being taken into account for a predetermined time interval close to the beginning of a closing cycle of said chopping switch.

Limiting the continuous mode of a power converter

An error amplifier providing an analog error signal, including an operational amplifier, an output terminal of which controls an active load of discharge of a resistive and capacitive network supplied by a reference current source, and circuitry for copying the reference current in an input resistor, a terminal of which receives a measurement signal and the other terminal of which is connected to a non-inverting input of the operational amplifier, the error signal being available across the resistive and capacitive network.

Integrated error amplifier

A voltage converter including a circuit for controlling a switch for providing current to a primary winding of a transformer with inverted phase points, a secondary winding of which is associated with a capacitor for providing a regulated D.C. output voltage and an auxiliary winding of which provides a supply voltage of the control circuit. The average value of the voltage across the auxiliary winding close to the end of its demagnetization periods.

Growing community of inventors

Rousset, France

Alain Bailly