Abstract: The present invention relates to a ceramic substrate (100) comprising: a front side (100-1), which comprises: i) a power semiconductor (102-1, . . . , 102-n); and ii) a first metallic layer (104) comprising at least one first metallic plane contact (104-1, . . . , 104-n), which is configured to connect the power semiconductor (102-1, . . . , 102-n) to a first terminal (105-1, . . . , 105-n) on an edge (100-3) of the ceramic substrate (100); a back side (100-2), which comprises: i) a capacitor (103) which is attached to a ii) second metallic layer (108) comprising at least one second metallic plane contact (108-1, . . . , 108-n), which is configured to connect the capacitor (103) to a second terminal (107-1, . . . , 107-n) on the edge (100-3) of the ceramic substrate (100); and a metallic frame (110), which is configured to connect the first metallic layer (104) to the second metallic layer (108).

Abstract: The present invention relates to a device (1) for controlling a power converter (100), the device (1) comprising: a sensor module (10), which is configured to measure an inductor current (i_L) through an inductor of the power converter (100); a compensation module (20), which is configured to generate a compensation waveform (i_c); and an operating module (30), which is configured to provide a continuous conduction mode current signal (i_CCM) based on the compensation waveform (i_c) and of the inductor current (i_L) and which is configured to control the power converter (100) based on the provided continuous conduction mode current signal (i_CCM).

Abstract: The present invention relates to a device (1) for estimating an average value of an inductor current for switched-mode power converters (100), the device (1) comprising: a sensor (10), which is configured to measure an inductor voltage (v_L) and an inductor current (i_L); a ripple-suppressor (20), which is configured to provide an estimated inductor current ripple (EIR) based on the measured inductor voltage (v_L); and a current-corrector (30), which is configured to provide a corrected inductor current (i_Lc) based on the estimated inductor current ripple (EIR) and the measured inductor current (i_L).

Abstract: Pre-conditioners (or line-conditioners) are used to convert electrical power having first characteristics into electrical power having second characteristics. For example, a pre-conditioner may connect electrical equipment forming a load, which requiring only a conventional mains supply level to a utility three-phase supply. This means that the power components of the load may be de-rated, making the load electrical equipment cheaper. Such circuits may be further improved. Components in the down-converter itself still need to be rated to interface with the higher voltage. An approach is proposed in which two interleaved down-converters (36, 38) can be used to supply voltages. An energy recovery element (50) connects snubbers of the interleaved down-converters, thus enabling some de-rating of the pre-conditioner circuitry.

Abstract: The present invention relates to a converter circuit (1) for reducing a nominal capacitor voltage, the converter circuit (1) comprising: an input node (TI1), which is configured to receive an input voltage (VG); an output node (TO1; TO2), which is configured to supply an output voltage (VO) to a load (RL1; RL2); and a capacitor (C1; C2), which is coupled to the load so that the input voltage is divided between the capacitor (C1; C2) and the load (RL1; RL2) and which is configured to be charged up to a voltage corresponding to a differential voltage between the input voltage (VG) and the output voltage (VO).

Abstract: The present invention relates an NPC switching device (10) for an X-ray system (86) with symmetric power supply, wherein the switching device is amended by extra damping resistors (13, 18) in the high voltage rails (24, 28). These resistors act as damping resistors. Thus, they may provide particular damping in combination with the load (100), which is capacitive dominated. Further, an additional inductor (77) may be provided at the output (48) of the NPC switching device allowing a resonant transition. In case the NPC switching device is connected with a grid capacitance of the X-ray system, comprising a cathode (90) and a grid (92), wherein the cathode and the grid form a grid capacitance, overshoot and settling time in the switching device may be controlled and reduced, in particular to a minimum.

Abstract: A high voltage transformer (50) includes a magnetic core (5); a low voltage winding (10); a high voltage winding (20); at least one inner sleeve (30); and a coil bobbin (24) for carrying the high voltage winding (20). The coil bobbin (24) is configured to be arranged inside the at least one inner sleeve (30) and configured to be attached to the at least one inner sleeve (30) at an outer perimeter of the at least one inner sleeve (30). The coil bobbin (24) includes at least one field-control electrode (22), which is adapted to shape an electric field generated by the high voltage winding (20).

Abstract: The present invention relates to a device (1) for controlling a power converter (100), the device (1) comprising: a sensor module (10), which is configured to measure an inductor current (i_L) through an inductor of the power converter (100); a compensation module (20), which is configured to generate a compensation waveform (i_c); and an operating module (30), which is configured to provide a continuous conduction mode current signal (i_CCM) based on the compensation waveform (i_c) and of the inductor current (i_L) and which is configured to control the power converter (100) based on the provided continuous conduction mode current signal (i_CCM).

Abstract: The present invention relates to a converter circuit (1) for reducing a nominal capacitor voltage, the converter circuit (1) comprising: an input node (TI1), which is configured to receive an input voltage (VG); an output node (TO1; TO2), which is configured to supply an output voltage (VO) to a load (RL1; RL2); and a capacitor (C1; C2), which is coupled to the load so that the input voltage is divided between the capacitor (C1; C2) and the load (RL1; RL2) and which is configured to be charged up to a voltage corresponding to a differential voltage between the input voltage (VG) and the output voltage (VO).

Abstract: Pre-conditioners (or line-conditioners) are used to convert electrical power having first characteristics into electrical power having second characteristics. For example, a pre-conditioner may connect electrical equipment forming a load, which requiring only a conventional mains supply level to a utility three-phase supply. This means that the power components of the load may be de-rated, making the load electrical equipment cheaper. Such circuits may be further improved. Components in the down-converter itself still need to be rated to interface with the higher voltage. An approach is proposed in which two interleaved down-converters (36, 38) can be used to supply voltages. An energy recovery element (50) connects snubbers of the interleaved down-converters, thus enabling some de-rating of the pre-conditioner circuitry.

Abstract: The present invention relates to a device (1) for estimating an average value of an inductor current for switched-mode power converters (100), the device (1) comprising: a sensor (10), which is configured to measure an inductor voltage (v_L) and an inductor current (i_L); a ripple-suppressor (20), which is configured to provide an estimated inductor current ripple (EIR) based on the measured inductor voltage (v_L); and a current-corrector (30), which is configured to provide a corrected inductor current (i_Lc) based on the estimated inductor current ripple (EIR) and the measured inductor current (i_L).

Abstract: The present invention relates to a ceramic substrate (100) comprising: a front side (100-1), which comprises: i) a power semiconductor (102-1, . . . , 102-n); and ii) a first metallic layer (104) comprising at least one first metallic plane contact (104-1, . . . , 104-n), which is configured to connect the power semiconductor (102-1, . . . , 102-n) to a first terminal (105-1, . . . , 105-n) on an edge (100-3) of the ceramic substrate (100); a back side (100-2), which comprises: i) a capacitor (103) which is attached to a ii) second metallic layer (108) comprising at least one second metallic plane contact (108-1, . . . , 108-n), which is configured to connect the capacitor (103) to a second terminal (107-1, . . . , 107-n) on the edge (100-3) of the ceramic substrate (100); and a metallic frame (110), which is configured to connect the first metallic layer (104) to the second metallic layer (108).

Abstract: Methods and devices are disclosed for a reusable PaYG dongle (10) including a data connection (11) arranged to connect to one or more PaYG products (20) and transfer data (17) to the one or more PaYG product (20) and an input unit arranged to receive an external signal (18). A controller (12) is arranged to process the external signal (18) and transfer the enable signal (17) using the data connection (11) to the one or more PaYG products (20) based upon the external signal (18). The methods are for enabling the one or more PaYG products (20) using the reusable PaYG dongle (10).

Abstract: The present invention relates to a high voltage generator (100) for supplying an X-ray tube (200), the high voltage generator (100) comprising: a voltage regulator device (100-1), which is configured to provide a DC voltage; a plurality of N generator devices (100-2), which are coupled to the regulator device (100-1) and which comprise a switched-mode power circuit (100-2A) and which are configured to provide a waveform pattern (WP); and a plurality of N transformer devices (100-3), which are coupled to the generator device (100-2) and which are configured to provide a high voltage output pattern (HVOP) by means of the provided waveform pattern (WP) and further configured as a serial connection of the N transformer devices (100-3), whereby all provided high voltages HVOP are added, thereby yielding a higher voltage (THV) in the X-ray tube and wherein each of the plurality of the N generator devices (100-2) is configured to provide the waveform patterns (WP) adjusted to produce a substantially flat-pulse shape

Abstract: The present invention relates to a bobbin assembly (1000-3) comprising: a plurality of winding slots (1000-4), each of which comprises a winding (10) with one turn per layer; and a plurality of isolation slots (1000-5), each of which comprises one single loop of the winding (10), and each of the isolation slots (1000-5) is adjacent to at least one winding slot (1000-4) of the plurality of winding slots (1000-4), and each of the winding slots (1000-4) is adjacent to at least one isolation slot (1000-5) of the plurality of isolation slots (1000-5).

Abstract: The present invention relates to a device for controlling a plurality of cells of a battery, the device comprising: a battery control module, comprising a plurality of cell control units, each assigned to one of the cells, wherein each cell control unit is configured to change a charge balance of the assigned cell and to measure at least one cell parameter of the assigned cell; and a main control module, which is configured to define a preferred range of the state-of-charge of the battery cells for a charging-discharging-cycle, wherein the preferred range is reduced compared to a full range, the main control module further configured to provide a first group of selected cells, on which a charging-discharging-cycle is performed including a fully charged state within the full range, and a second group of non-selected cells, on which the charging-discharging-cycle is performed within the preferred range.

Abstract: The invention relates to a high voltage transformer (50) comprising: a magnetic core (5); a low voltage winding (10); a high voltage winding (20); at least one inner sleeve (30); and a coil bobbin (24) for carrying the high voltage winding (20), wherein the coil bobbin (24) is configured to be arranged inside the at least one inner sleeve (30) and configured to be attached to the at least one inner sleeve (30) at an outer perimeter of the at least one inner sleeve (30); and wherein the coil bobbin (24) comprises at least one field-control electrode (22), which is adapted to shape an electric field generated by the high voltage winding (20).