Abstract: The present invention discloses a method and an apparatus for controlling a flyback converter, the flyback converter including a main switch, a transformer, and an auxiliary switch. The method includes: obtaining a first voltage signal and a second voltage signal, the first voltage signal representing an input voltage of the flyback converter, and the second voltage signal representing an output voltage of the flyback converter; controlling turn-on of the auxiliary switch, wherein the turn-on time period of the auxiliary switch is determined according to the first voltage signal and the second voltage signal; and turning on the main switch at ZVS condition, wherein the main switch is turned on at the time delayed for a duration of a dead time after turning off of the auxiliary switch.

Abstract: A multiple parallel-connected resonant converter, an inductor-integrated magnetic element and a transformer-integrated magnetic element are provided. The multiple parallel-connected resonant converter includes a first and a second converters. The first converter having a first input and output end includes a first inductor, a first transformer and a first capacitor connected in series. The second converter having a second input and output end includes a second inductor, a second transformer and a second capacitor connected in series. The second output end is connected with the first output end in parallel. The first and second inductor are integrated in a first magnetic element, the first magnetic element includes a first and second side column, and a first and second central column. The first inductor includes a first coil positioned around the first central column and the second inductor includes a second coil positioned around the second central column.

Abstract: A power module, including: a first conductor, disposed at a first reference plane; a second conductor, disposed at a second reference plane, wherein projections of the first and second conductors on the first reference plane have a first overlap area; a third conductor, disposed at a third reference plane; a plurality of first switches, first ends of which are coupled to the first conductor; and a plurality of second switches, first ends of which are coupled to second ends of the first switches through the third conductor, and second ends of the second switches are coupled to the second conductor, wherein projections of minimum envelope areas of the first and second switches on the first reference plane have a second overlap area, and the first and second overlap areas have an overlap region. Heat sources of the power module are evenly distributed and its parasitic inductance is low.

Abstract: An integrated inductor and a power conversion module including the integrated inductor are provided. The integrated inductor includes a magnetic core, the magnetic core including two cover plates, two side columns and two central columns between the two side columns, and two windings wound around the two central columns respectively, forming two inductors. Each operating current flowing through the two windings includes a corresponding high-frequency current component, a phase difference between the high-frequency current components of the operating currents flowing through the two windings is 180 degrees.

Abstract: The present disclosure mainly provides a clamping circuit, coupled to a first end and a second end of a switching transistor through a first node and a second node, comprising: an RCD circuit, comprising a first resistor and a first capacitor connected in parallel between the second node and a third node, and a diode having a negative electrode coupled to the third node; and a first stabilivolt diode, having a negative electrode coupled to the first node and a positive electrode coupled to a positive electrode of the diode at a fourth node.

Abstract: The present disclosure provides a power supply module. The power supply module is applied to an integrated circuit chip assembly which includes a first carrier board and an integrated circuit chip located at a first side of the first carrier board; the power supply module includes: a second carrier board; a first-stage power supply unit; and a second-stage power supply unit, power input terminals of the second-stage power supply unit are electrically connected with corresponding power output terminals of the first-stage power supply unit through the second carrier board; power output terminals of the second-stage power supply unit are electrically connected with corresponding power terminals of the integrated circuit chip, a projection of the second-stage power supply unit on a first plane is at least partially located within a projection range of the integrated circuit chip on the first plane, the first plane is parallel to the first carrier board.

Abstract: Power module includes transformer unit including primary and secondary windings and magnetic core; first and second capacitor units coupled to first terminal of primary winding of transformer unit through first node; first and second external pins respectively coupled to first terminal of first capacitor unit and second terminal of second capacitor unit; first and second switch units coupled to second terminal of primary winding of transformer unit thorough second node; third and fourth external pins respectively coupled to first terminal of first switch unit and second terminal of second switch unit; secondary-side circuit coupled to secondary winding; and fifth and sixth external pins electrically coupled to first and second output terminals of secondary-side circuit, respectively. First external pin is coupled to one of third and fourth external pins selectively.

Abstract: A light source system includes a fluorescent wheel, a color wheel, at least one light reflector, and a light source module. The fluorescent wheel includes at least one fluorescent section. The color wheel includes a filter portion. The light reflector has a reflective curved surface having a first focal point and a second focal point conjugated to each other. The first focal point is located on a rotation path of the fluorescent section. The second focal point is located on a rotation path of the filter portion. The light source module is configured to emit light to the first focal point.

Abstract: The invention discloses an inverter and a soft-start method for the same. The inverter is electrically connected between a DC power supply and a grid and includes a main power circuit electrically coupled to the grid through a relay, a filter, the relay, and a controller electrically connected with the main power circuit and the relay, respectively. The soft-start method includes: sampling a grid voltage of the grid; calculating an output voltage of the controller, and calculating a virtual current based on the output voltage of the controller, the grid voltage and a virtual impedance; and performing current closed-loop control by taking the virtual current as a feedback signal and sending a relay control signal to turn on the relay when a steady state is reached. The invention enables the soft start of the inverter without increasing any hardware circuit, such as a starting resistor, or the like.

Abstract: The present invention discloses a power adapter and an electronic device comprising the same. The power adapter comprises a housing, which has a plurality of end faces. The power adapter further comprises a power inlet socket, which is provided on any of the plurality of end faces. The end face on which the power inlet socket is provided, at least another one of the plurality of end faces, and the power inlet socket are formed as one body integrally.

Abstract: A diagnosing method for an abnormal cable connection of an incremental encoder includes: receiving a first-set of differential signals including one of signals A/? and one of signals B/B and a second-set of differential signals including one of signals A/? and one of signals B/B from the incremental encoder by two encoder modules; calculating a first signal-information group and a second signal-information group according to the first-set and second-set of differential signals; calculating a first parameter-information group and a second parameter-information group based on the first and second signal-information groups; determining whether a first signal direction is consistent with a second signal direction according to the first and second parameter-information groups; calculating a position-feedback control parameter for a motor according to a signal-information group corresponding to a normal set of differential signals when the first signal direction is determined to be inconsistent with the second sign

Abstract: A system of providing power including: a preceding-stage power supply module, a post-stage power supply module and a load, connected in sequence; a projection on the mainboard of a smallest envelope area formed by contour lines of the preceding-stage power supply module and the load at least partially overlaps with a projection of the post-stage power supply module; the preceding-stage power supply module includes a plurality of sets of preceding-stage output pins and preceding-stage ground pins alternately arranged to form a first rectangular envelope area, and the load is disposed on a side of a long side of the first rectangular envelope area; and the load comprises a load input pin and a load ground pin forming a second rectangular envelope area, and a center line of the first rectangular envelope area and the second rectangular envelope area is perpendicular to the long side of the first rectangular envelope area.

Abstract: An interleaved LLC converter arrangement includes two or more LLC converters for transferring power from an input side to an output side, wherein the two or more LLC converters include a first LLC converter and a second LLC converter connected in parallel on the input side and on the output side and wherein each LLC converter includes a bridge inverter at the input side. For balancing the power transfer among the LLC converters if for example the second LLC converter transfers more power from the input side to the output side than the first LLC converter, each leg of the bridge of the bridge inverter of the first LLC converter is operated with a duty cycle of 0.5 and at least one leg of the bridge of the bridge inverter of the second LLC converter is operated with a duty cycle different from 0.5.

Abstract: A method and system for establishing a Bluetooth mesh network are provided. The method for establishing a Bluetooth mesh network includes the steps of broadcasting the configuration packet to a plurality of controlled devices to establish a Bluetooth mesh network; receiving at least one response packet from at least one of the controlled devices; and transmitting control setting information to the at least one of the controlled devices according to the received response packet.

Abstract: A high-voltage transformer includes a magnetic core; at least a secondary coil unit including at least one secondary winding; at least a primary coil unit, comprising at least one primary winding and a first insulating portion, the first insulating portion forming at least one through hole, the primary winding encircling the through hole and being wrapped by the first insulating portion and fixed in the first insulating portion, the magnetic core passing through the through hole, a shielding layer being formed on a surface of the first insulating portion, and the shielding layer being used for connecting a safety ground; a second insulating portion formed by extending the first insulating portion; a first retaining wall presented in a closed ring shape, arranged on an end periphery of the second insulating portion; and a second retaining wall arranged in the first retaining wall.

Abstract: A transformer includes a magnetic core, a first winding and at least one second winding. The magnetic core has a window through which the first winding passes through without contacting the magnetic core. The second winding passes through the window of the magnetic core and is wound on the magnetic core. The second winding has a distance from the first winding, and the second winding has a first insulating part disposed on an outer surface of the second winding facing the first winding.

Abstract: The present disclosure relates to a method and apparatus for charging and discharging. The apparatus includes: an AC power terminal, including first to third nodes, and a first center line node, and being configured to receive input an AC input or send an AC output; a power conversion stage, including fourth to sixth nodes, and a second center line node; a first bus capacitor and a second bus capacitor both coupled to the second center line node, the first center line node being coupled to the second center line node; a first switch set; a second switch set; a control module, coupled to the first switch set, the second switch set, the AC power terminal, and the power conversion stage.

Abstract: A multiple parallel-connected resonant converter, an inductor-integrated magnetic element and a transformer-integrated magnetic element are provided. The multiple parallel-connected resonant converter includes a first and a second converters. The first converter having a first input and output end includes a first inductor, a first transformer and a first capacitor connected in series. The second converter having a second input and output end includes a second inductor, a second transformer and a second capacitor connected in series. The second output end is connected with the first output end in parallel. The first and second inductor are integrated in a first magnetic element, the first magnetic element includes a first and second side column, and a first and second central column. The first inductor includes a first coil positioned around the first central column and the second inductor includes a second coil positioned around the second central column.

Abstract: A bidirectional DC-DC converter with three or more ports is described along with a method of operation thereof. The converter utilizes a common transformer for all ports and allows for power transfer from any port to any or all of the remaining ports. The converter may utilize a controller which implements variable-frequency control, delay-time control, and/or phase-delay control to achieve power transfer as desired between the converter ports. In some cases, power transfer between ports can operate similar to a series-resonant converter or a dual active bridge converter.

Abstract: Disclosed is a power supply system, including: a high-voltage input power distribution cabinet, a high-low voltage conversion cabinet, and a low-voltage output and control cabinet, the high-low voltage conversion cabinet is provided with at least one high-voltage chamber provided with a high-voltage bus bar, at least one low-voltage chamber provided with a low-voltage bus bar, an insulating partition between the high-voltage chamber and the low-voltage chamber and a plurality of power supply modules; each of the power supply modules bridges the high-voltage and low-voltage chambers and includes a high-voltage cavity, a low-voltage cavity and an isolation unit, connecting terminals of the high-voltage and low-voltage cavities are respectively disposed corresponding to the high-voltage and low-voltage chambers and electrically connected to the high-voltage and low-voltage bus bars respectively, and the isolation unit is connected to one end of the high-voltage cavity and one end of the low-voltage cavity.