Abstract: A high-output ratio DC DC converter supplies at least two regulated output voltages, a positive voltage Vs+ and a negative voltage Vs? from a direct current voltage Vin applied at the input, by means of two voltage boost structures with pairs of switches SBp1, SHp1, and groups of input capacitors Gin1 and output capacitors Gout1, controlled by an inductive stage with inductance Lin and controlled switch M, a level translator circuit with capacitor Ct and direct diode Dt being provided between the said inductive stage and the structure supplying the negative output voltage.

Abstract: This AC/DC converter is an isolated converter with switch-mode current regulation by means of a controlled switch (5). The controlled switch (5) is protected by a current limiting device (9, 7) obeying a peak current setpoint proportional to the instantaneous voltage from the power supply source (Vin). This allows the quality of the absorbed current to be improved and the risks of interference from the switch-mode power supply to be limited while at the same time satisfying the new demands on avionics power networks.

Abstract: A cellular inverter generates an alternating output voltage by a succession of serial combinations of DC voltage electrical sources that are available to it within switchable cells and, within a serial combination currently in use, by a voltage regulation using high-frequency chopping. This voltage regulation exhibits a certain lag and allows through an undesirable voltage step during the repositioning of its operating range caused by a change of the serial combination currently in use. The cellular inverter proposed comprises, in its high-frequency switch-mode voltage regulation circuit illustrated in the figure, a pre-compensation circuit that allows the lag to be compensated for and this undesirable voltage step to be considerably attenuated.

Abstract: The invention relates to a device for measuring current in an inductor, which device is intended to be connected in parallel with said inductor, comprising two terminals A and B.

Abstract: Voltage booster converter comprising a pair of input terminals A and B for connecting a DC input voltage Vin between these two terminals; a pair P0 of switches SB, SH in series connected by the switch SB to the input terminal B, the input terminal A being connected across an input inductor Lin to the connection point between the two switches SB and SH in series, each switch SB, SH comprising a control input so as to be placed simultaneously, one in an on state the other in an isolated state; a pair of output terminals C and D, for powering, by an output voltage Vout, a load Rout, the output terminal D being connected to the input terminal B; K other additional pairs P1, P2, . . . Pi, . . . PK?1, PK of switches in series between the output terminal C and the free side of the switch SH with i=1, 2, . . . K?1, K, the two switches of one and the same additional pair Pi being connected across an energy recovery inductor Lr1; K input groups, Gin1, Gin2, . . . Gini, . . .

Abstract: A cellular inverter generates an alternating output voltage by a succession of serial combinations of DC voltage electrical sources that are available to it within switchable cells and, within a serial combination currently in use, by a voltage regulation using high-frequency chopping. This voltage regulation exhibits a certain lag and allows through an undesirable voltage step during the repositioning of its operating range caused by a change of the serial combination currently in use. The cellular inverter proposed comprises, in its high-frequency switch-mode voltage regulation circuit illustrated in the figure, a pre-compensation circuit that allows the lag to be compensated for and this undesirable voltage step to be considerably attenuated.

Abstract: In an energy storage device comprising a series network of n storage elements C1, . . . Cn, able to provide a continuous voltage across its terminals, a system for equilibrating the elements is envisaged comprising a plurality of charge transfer modules Mi,j, each module Mi,j ensuring a bidirectional transfer of charge linear to first order between two storage elements Ci and Cj of the said network. Each energy storage element is connected to p modules, p?n?1, each of the p modules pairing the said element with another element of the network. The time required for reequilibrating is thus reduced.

Abstract: Voltage booster converter comprising a pair of input terminals A and B for connecting a DC input voltage Vin between these two terminals; a pair P0 of switches SB, SH in series connected by the switch SB to the input terminal B, the input terminal A being connected across an input inductor Lin to the connection point between the two switches SB and SH in series, each switch SB, SH comprising a control input so as to be placed simultaneously, one in an on state the other in an isolated state; a pair of output terminals C and D, for powering, by an output voltage Vout, a load Rout, the output terminal D being connected to the input terminal B; K other additional pairs P1, P2, . . . Pi, . . . PK-1, PK of switches in series between the output terminal C and the free side of the switch SH with i=1, 2, . . . K?1, K, the two switches of one and the same additional pair Pi being connected across an energy recovery inductor Lr1; K input groups, Gin1, Gin2, . . . Gini, . . .

Abstract: The invention relates to a buck converter comprising: a pair P—0 of switches SB, SH in series and connected to an input terminal B of the converter by the switch SB, K other additional pairs P—1, P—2, . . . , P_i, . . . P_K?1, P_K of switches in series between another input terminal A and the switch SH of the pair P—0, with i=1, 2, . . . K?1, K, the two switches of the same additional pair P_i are connected in series via an energy recovery inductor Lr_i; K input groups, Gin—1, Gin—2, . . . Gin_i, . . . Gin_K?1, Gin_K, of Ni capacitors C each in series; K output groups, Gout—1, Gout—2, . . . Gout_i, . . . Gout_K?1, Gout_K, of Mi capacitors C each in series. The switches P—0 and the K additional pairs are simultaneously controlled by first and second complementary control signals.

Abstract: The invention relates to a buck converter comprising: a pair P—0 of switches SB, SH in series and connected to an input terminal B of the converter by the switch SB, K other additional pairs P—1, P—2, . . . , P_i, . . . P_K?1, P_K of switches in series between another input terminal A and the switch SH of the pair P—0, with i=1, 2, . . . K?1, K, the two switches of the same additional pair P_i are connected in series via an energy recovery inductor Lr_i; K input groups, Gin—1, Gin—2, . . . Gin_i, . . . Gin_K?1, Gin_K, of Ni capacitors C each in series; K output groups, Gout—1, Gout—2, . . . Gout_i, . . . Gout_K?1, Gout_K, of Mi capacitors C each in series. The switches P—0 and the K additional pairs are simultaneously controlled by first and second complementary control signals.

Abstract: The invention relates to a series chopper comprising: a pair of input terminals A and B for connecting a DC input voltage Vin, a pair P of breakers SB, ST in series connected by the breaker SB to the input terminal B, ST comprising a control input Cm1 for setting ST either into an on state or into an isolated state, SB comprising a control input Cm2 for setting SB either into an on state or into an isolated state, a pair of output terminals C and D, for supplying, with an output voltage Vout, a load R the output terminal D being connected to the input terminal B and the output terminal C to the point of connection between the two breakers SB and ST in series across an inductor. The series chopper comprises K other additional pairs Pi of breakers in series between the input terminal A and the free side of the breaker ST with i=1, 2 . . . K. K input capacitors Cfi in series connected to the K pairs of breakers with i=1, 2 . . . K, . . .

Abstract: The invention relates to a unitary magnetic coupler including a first inductor (Lp) consisting of a first winding of phase ? and having a number N of turns between the two ends of the first winding and, magnetically coupled to the first inductor (Lp), a second inductor (Ls) consisting of a second winding of the same phase ? and having the same number N of turns between the two ends of the second winding, where the ends of the first and second windings of the unitary magnetic coupler are interconnected using links consisting of capacitors (C1, C2) of equal value.

Abstract: The invention relates to a unitary magnetic coupler including a first inductor (Lp) consisting of a first winding of phase ? and having a number N of turns between the two ends of the first winding and, magnetically coupled to the first inductor (Lp), a second inductor (Ls) consisting of a second winding of the same phase ? and having the same number N of turns between the two ends of the second winding, where the ends of the first and second windings of the unitary magnetic coupler are interconnected using links consisting of capacitors (C1, C2) of equal value.

Abstract: The invention relates to a series chopper comprising:

Abstract: The invention concerns a planar transformer winding comprising primary and secondary coils with wire turns produced in the form of strip conductors formed on the surfaces of an insulting base and electrically connected with one another by means of conducting holes bored in the insulating base. The primary and secondary winding portions borne by one common surface of the insulating base are joined together by winding, along two distinct overlapping zones, spiral in shape, one of the zones joining side by side turns or portions of turns of the primary coil and the other zone joining together the turns or portions or turns of the secondary coil. Such an arrangement enables to obtain primary and secondary coils with a different number of turns on one single insulating base with two surfaces.

Abstract: A device for transferring power by an electrical energy transformer, and in particular by a magnetic coupler, including on a primary side a primary winding in series with an alternating source and on a secondary side a secondary winding, a rectifier bridge, and a load. The rectifier bridge includes two diodes arranged in series with the secondary winding and two MOS transistors also in series with the secondary winding. The load is connected on the one hand to a point common to the two diodes and on the other hand to a point common to the two MOS transistors. A mechanism is provided for switching the MOS transistors in such a way that they are simultaneously in the ON state for a predetermined duration. Such a device may find application to cases of weak coupling between a primary side and a secondary side.

Abstract: An electronic circuit for monitoring electrical voltage where the electronic circuit includes a high threshold terminal and a low threshold terminal and is configured so as to enable a comparison between a high reference voltage and a low reference voltage with voltages detected on the respective terminals. The electronic circuit further includes configurations enabling the prescriptions of voltages at each terminal.

Abstract: A process for controlling a DC/DC voltage converter and a DC/DC voltage converter with inductive storage, operating according to cycles for transferring energy between a primary source and a secondary source. Each cycle includes a period of accumulation of magnetic energy in an inductive element from the primary source, followed by a period of restitution of this energy in the secondary source, wherein an energetically neutral phase of a duration such that the DC/DC voltage converter operates at a predetermined frequency is introduced into the operating cycles.

Abstract: A bidirectional current sensor including a transformer having a primary winding arranged in a circuit likely to be run through by a current to be measured, a secondary winding, an impedance for demagnetizing the transformer, and a measuring resistor connected to the secondary winding via a switch controlled to be on when a current is likely to run through the primary winding. It applies in particular to the detection of currents in bidirectional voltage converters.

Abstract: A bidirectional voltage converter comprises an inductive element, a primary circuit having a first chopping switch and a first diode, and at least a secondary circuit having a second chopping switch and a second diode. The first switch is switched on upon reception of a start-up signal of the primary period, and switched off when the current in the primary circuit is higher than a control signal. The second switch is switched on upon reception of a start-up signal of the secondary period, to calculate the duration of the secondary period, to count this duration, and switched off when this duration is ended.