Abstract: A power conversion device includes a DC-to-DC converter and a control unit, the control unit includes a phase-locked loop controller, and the DC-to-DC converter includes a primary side circuit, a secondary side circuit and a transformer. The transformer transfers energy between the primary side circuit and the secondary side circuit, the primary side circuit includes an inverter circuit, and the phase-locked loop controller outputs a first driving signal. The first driving signal is generated according to a phase jitter signal, a phase reference signal and an output phase signal of the inverter circuit, and the first driving signal is configured to control the inverter circuit.

Abstract: The invention discloses a power conversion device and a voltage control method. The power conversion device includes a first stage circuit configured to generate a first output voltage, a second stage circuit configured to receive the first output voltage and generate an output current and a second output voltage, and a control unit configured to control the first stage circuit according to a set value of the output current, thereby adjusting the first output voltage. The invention can be adapted to a wide range load voltage by adjusting the first output voltage of the first stage circuit according to the set value of the output current of the second stage circuit.

Abstract: A method for manufacturing a plastic article for a magnetic element, comprising: providing a first die core and a second die core opposite to each other along a first direction; providing a third die core adjacent to the first die core and the second die core along a second direction wherein the second direction is perpendicular to the first direction; providing at least one hole insert for forming a pin-fixing hole for fixing a lead-pin of a winding of the magnetic element, wherein the at least one hole insert is detachably mounted to at least one of the first die core, the second die core, and the third die core; and combining the first die core, the second die core, the third die core, and the at least one hole insert to form a mold with a cavity, wherein the cavity is injection molded to manufacture the plastic article.

Abstract: An illumination system for a projector includes a light engine module, a light source module, a reflective mirror, a beam splitter, a phosphor wheel, and a lens assembly. The light source module can emit blue light along a first direction. The reflective mirror may reflect the blue light such that the blue light transmits in a second direction. A reflective region of the phosphor wheel can reflect a first portion of the blue light, and a first wavelength conversion region of the phosphor wheel can to activate a second portion of the blue light to form first band light. The lens assembly is configured to allow the first band light to pass through. The reflective region of the beam splitter is configured to reflect the first portion of the blue light and the first band light to the light engine module along the first direction.

Abstract: A Totem Pole PFC circuit includes at least one fast-switching leg, a slow-switching leg, and a control unit. Each fast-switching leg includes a fast-switching upper switch and a fast-switching lower switch. The slow-switching leg is coupled in parallel to the at least one fast-switching leg, and the slow-switching leg includes a slow-switching upper switch and a slow-switching lower switch. The control unit receives an AC voltage with a phase angle, and the control unit includes a current detection loop, a voltage detection loop, and a control loop. The control loop generates a second control signal assembly to respectively control the slow-switching upper switch and the slow-switching lower switch. The control loop controls the second control signal assembly to follow the phase angle, and dynamically adjusts a duty cycle of the second control signal assembly to turn on or turn off the slow-switching upper switch and the slow-switching lower switch.

Abstract: The present disclosure provides a switching power supply and a control method for a switching power supply, and relates to the technical field of power supply. The method includes: detecting a temperature of a bus capacitor and determining temperature information of the bus capacitor, where an input terminal of a PFC boost circuit is connected to a power source, and the bus capacitor is located at an output terminal of the PFC boost circuit; and adjusting a voltage across the bus capacitor in a preset manner according to the temperature information of the bus capacitor.

Abstract: The present disclosure provides a rectifier module and a transformer, the rectifier module includes a transformer and a rectifier board, the transformer includes: a magnetic core; a first winding; and a second winding, the magnetic core includes a magnetic column, the first winding is arranged on the magnetic column, and the second winding is arranged outside the first winding; comb-type pins are respectively arranged on opposite sides of the second winding, the comb-type pins are arranged along a first direction, and the comb-type pins include comb teeth and comb gaps; the rectifier board includes: a circuit board; and a plurality of switch element groups arranged along the first direction, the switch element group includes at least one switch element; along the second direction, the comb teeth are adjacent to the switch element; the first direction and the second direction are perpendicular to each other.

Abstract: The present disclosure provides a control method for a resonant converter and a resonant converter, and relates to the technical field of resonant converters. The resonant converter includes a primary side switch and a corresponding rectification switch, the primary side switch is controlled by a first control signal, the rectification switch is controlled by a second control signal, and the method includes: acquiring a voltage difference value, where the voltage difference value is obtained by subtracting a voltage value of an output voltage of the resonant converter from a reference voltage value; and adjusting a turn-on dead time and/or a turn-off dead time between the first control signal and the second control signal according to the voltage difference value.

Abstract: A flyback circuit and a control method of a clamping switch of the flyback circuit are provided. The flyback circuit includes a transformer, a main switch, a clamping capacitor, a clamping switch, and a secondary rectifier unit. The transformer includes primary and secondary windings with a turns ratio of K. The main switch and the primary winding are connected in series to receive an input voltage. The clamping switch and the clamping capacitor are connected in series and then connected to the primary winding in parallel. The secondary rectifier unit and the secondary winding are connected in series to provide an output voltage to a load. The control method includes: when a product of K and the output voltage is greater than or equal to the input voltage, controlling the clamping switch to turn on M times during N consecutive switching cycles of the main switch, where I?M<N.

Abstract: Disclosed are a method for fabricating an inductor with a vertical winding and an injection molding tooling thereof. The fabrication method includes: providing a conductive member that includes a connection piece, which includes a first surface and a second surface that are oppositely arranged, and a pillar on the first surface; injecting the magnetic material onto a side of the conductive member with the pillar, such that the magnetic material and the conductive member form an integrated structure; and cutting the connection piece to form the vertical winding. The injection molding tooling includes: an upper punch for stamping a magnetic material and a conductive member into an integrated structure, a molding cavity body surrounding a periphery of a pillar of the conductive member, and a lower punch for bearing a connection piece of the conductive member.

Abstract: A hot-swappable pump unit (HSPU) and a coolant distribution unit (CDU) using the same are disclosed. The HSPU is connected to a loop inlet element, a loop outlet element and a fixed component of CDU along a matching direction. The HSPU includes a housing, a pump, a pump inlet element, a pump outlet element and a fastening component. The pump inlet element is in communication with the pump by passing through a first lateral wall of the housing. The pump outlet element is in communication with the pump by passing through the first lateral wall. The fastening component is arranged on the housing and configured to engage with the fixed component, to drive the hosing to move along the matching direction. Whereby, the pump inlet element and the loop outlet element are matched and connected, and the pump outlet element and the loop inlet element are matched and connected.

Abstract: A hairpin stator includes a core, slot-positions and hairpin wires. The core includes a first side and a second side. The slot-positions are configured on the core circumferentially to form M radially-adjacent slot-position layers, wherein M is an odd number greater than or equal to 5. The hairpin wires are configured in the slot-positions and connected to form a plurality of windings. The hairpin wires include a plurality of first U-shaped wires arranged at an outermost slot-position layer in the radial direction and a plurality of second U-shaped wires arranged at an innermost slot-position layer in the radial direction. Each first U-shaped wire includes a U-shaped section arranged at the outermost slot-position layer and protruding from the first side of the core. Each second U-shaped wire includes a U-shaped section arranged at the innermost slot-position layer and protruding from the second side of the core.

Abstract: The present disclosure provides a manufacturing method of a magnetic element, comprising: forming an insulation layer on an outer side of at least one section of a magnetic column of a magnetic core; forming a metal wiring layer on an outer side of the insulation layer through a metallization process; and dividing at least part of the metal wiring layer into a multi-turn metal winding through a mechanically dividing process.

Abstract: A multi-port power delivery system and a power allocation method thereof are disclosed. The system comprises a first connection port, a second connection port, and a controller which is configured to monitor the average power of each connection port, and decrease the power budget of the first connection port and increase the power budget of the second connection port when the average power of the first connection port falls below a first threshold, and the average power of the second connection port exceeds a second threshold.

Abstract: A report editing method for a supervisory control and data acquisition (SCADA) system is disclosed and includes following steps: when a window interface is triggered to open, determining whether a binding label exists in a register of a variable library of the SCADA system; if the binding label exists, reading report data corresponding to the binding label from an edited-data file to import the report data into the window interface; if the binding label does not exist, obtaining multiple report items through the window interface to create and store new report data to the edited-data file; and writing a new binding label corresponding to the new report data to the variable library to bind the window interface with the new report data.

Abstract: A wireless management system includes a controller and energy storage units. Each of the energy storage units includes an energy storage device and a node substrate. The wireless management system is configured to select a first node substrate from the node substrates based on a signal strength of each of first request signals to join a local network by the controller. The wireless management system is further configured to select a second node substrate from the node substrates based on the signal strength of each of second request signals to join the local network by the first node substrate. The wireless management system is further configured to assign a serial number corresponds to each of the energy storage units based on the local network by the controller.

Abstract: The present disclosure concerns a method of manufacturing an electronic device, where the electronic device includes at least one electronic component with at least one electrical winding, and at least one heat dissipation mass coating, and the method includes inserting the at least one electronic component into a cavity; pouring, before or after the insertion of the electronic component, a heat dissipation mass into the cavity so as to at least partially fill the cavity and at least partially cover the electronic component with the heat dissipation mass; removing the electronic device, namely, the electronic component covered by the heat dissipation mass coating, from the cavity. The present disclosure also concerns an electronic apparatus including at least one electronic device manufactured by the foregoing method.