Abstract: A semiconductor device including a substrate, a semiconductor package, a thermal conductive bonding layer, and a lid is provided. The semiconductor package is disposed on the substrate. The thermal conductive bonding layer is disposed on the semiconductor package. The lid is attached to the thermal conductive bonding layer and covers the semiconductor package to prevent coolant from contacting the semiconductor package.

Abstract: A power converter including: an output unit outputs a converted voltage; a transformer includes a first primary wiring, second primary wiring, and a secondary wiring; a first switch unit is coupled between first primary wiring and a second node; a delay unit is coupled to a control terminal of first switch unit; a first control unit generates a first control signal according to the converted voltage to control ON/OFF state of the first switch unit via the delay unit; the processing unit, coupled between the input voltage and the first node, receives, stores induced power of first induced voltage and releases the stored energy; and the second control unit generates a second control signal to control ON/OFF state of a second switch unit of processing unit to control receiving or releasing the energy according to the input voltage and induced power of first primary wiring.

Abstract: A power converter including: an output unit outputs a converted voltage; a transformer includes a first primary wiring, second primary wiring, and a secondary wiring; a first switch unit is coupled between first primary wiring and a second node; a delay unit is coupled to a control terminal of first switch unit; a first control unit generates a first control signal according to the converted voltage to control ON/OFF state of the first switch unit via the delay unit; the processing unit, coupled between the input voltage and the first node, receives, stores induced power of first induced voltage and releases the stored energy; and the second control unit generates a second control signal to control ON/OFF state of a second switch unit of processing unit to control receiving or releasing the energy according to the input voltage and induced power of first primary wiring.

Abstract: A manufacturing method of a magnetic element includes the following steps: forming a block including a central post and at least one lateral post with magneto-conductive materials; cutting the block along a first plane passing through the central and lateral posts to form a first half body and a second half body; combining the first half body with the second half body to form a first air gap between the central post of the first half body and the central post of the second half body and a second air gap between the lateral post of the first half body and the lateral post of the second half body; and cutting or grinding the combined first half body and second half body along a second plane passing through the central post and the lateral post to form a third half body including the first and second air gaps.

Abstract: A rectifier, including: a first and a second input terminal, a first output terminal and at least one rectifying circuit. Each rectifying circuit including: a switching circuit including a transistor, and a driving circuit. The driving circuit is coupled to the switching circuit and controls a switching status of the switching circuit, and includes a totem-pole circuit and an input transistor. The totem-pole circuit includes an input terminal and an output terminal coupled to the transistor. The input transistor is coupled between the totem-pole circuit and the switching circuit. The at least one rectifying circuit includes a first and a second rectifying circuit. The transistors of the first rectifying circuit and the second rectifying circuit are coupled to the first output terminal. The input transistors of the first rectifying circuit and the second rectifying circuit are coupled to the first input terminal and the second input terminal, respectively.

Abstract: A power adapter including a main circuit board and an auxiliary circuit board is provided. The main circuit board has a first surface and a second surface opposite to each other, and the first surface of the main circuit board is configured with a transformer and a first capacitor. The auxiliary circuit board has a first surface and a second surface opposite to each other, and the first surface of the auxiliary circuit board is configured with an input rectifier filter circuit, where the auxiliary circuit board is disposed in parallel above the main circuit board, and the input rectifier filter circuit of the auxiliary circuit board is electrically connected to the first capacitor of the main circuit board. Under a condition of same electrical parameters and dimensions, the volume of the power adapter of the invention is only a half of that of the existing power adapter, which satisfies a demand for miniaturization of the electronic devices.

Abstract: A snubber circuit is provided. The snubber circuit includes a transistor structure and a first capacitor. The transistor structure includes a chip package and two pins. The chip package includes a transistor die and a molding compound encapsulating the transistor die. A first pin of the two pins is electrically connected to a first bonding pad and a second bonding pad of the transistor die, and a second pin of the two pins is electrically connected to a third bonding pad of the transistor die. The first pin or the second pin of the transistor structure is electrically connected to a terminal of the first capacitor.

Abstract: A rectifier, including: a first and a second input terminal, a first output terminal and at least one rectifying circuit. Each rectifying circuit including: a switching circuit including a transistor, and a driving circuit. The driving circuit is coupled to the switching circuit and controls a switching status of the switching circuit, and includes a totem-pole circuit and an input transistor. The totem-pole circuit includes an input terminal and an output terminal coupled to the transistor. The input transistor is coupled between the totem-pole circuit and the switching circuit. The at least one rectifying circuit includes a first and a second rectifying circuit. The transistors of the first rectifying circuit and the second rectifying circuit are coupled to the first output terminal. The input transistors of the first rectifying circuit and the second rectifying circuit are coupled to the first input terminal and the second input terminal, respectively.

Abstract: A power detection and transmission circuit is provided. The power detection and transmission circuit includes a first conversion circuit, a second conversion circuit and a signal coupling circuit. The first conversion circuit is electrically connected to a power supply module to receive an analog input signal, and is arranged for converting the analog input signal to a first pulse width modulation (PWM) signal. The second conversion circuit is arranged for converting a second PWM signal to an analog regenerated signal, and transmitting the analog regenerated signal to a microcontroller, wherein the microcontroller calculates power information of the power supply module according to the analog regenerated signal. The signal coupling circuit is coupled between the first conversion circuit and the second conversion circuit, and is arranged for coupling the first PWM signal to the second conversion circuit and accordingly generating the second PWM signal.

Abstract: A power detection and transmission circuit is provided. The power detection and transmission circuit includes a first conversion circuit, a second conversion circuit and a signal coupling circuit. The first conversion circuit is electrically connected to a power supply module to receive an analog input signal, and is arranged for converting the analog input signal to a first pulse width modulation (PWM) signal. The second conversion circuit is arranged for converting a second PWM signal to an analog regenerated signal, and transmitting the analog regenerated signal to a microcontroller, wherein the microcontroller calculates power information of the power supply module according to the analog regenerated signal. The signal coupling circuit is coupled between the first conversion circuit and the second conversion circuit, and is arranged for coupling the first PWM signal to the second conversion circuit and accordingly generating the second PWM signal.

Abstract: A manufacturing method of a magnetic element includes the following steps: forming a block including a central post and at least one lateral post with magneto-conductive materials; cutting the block along a first plane passing through the central and lateral posts to form a first half body and a second half body; combining the first half body with the second half body to form a first air gap between the central post of the first half body and the central post of the second half body and a second air gap between the lateral post of the first half body and the lateral post of the second half body; and cutting or grinding the combined first half body and second half body along a second plane passing through the central post and the lateral post to form a third half body including the first and second air gaps.

Abstract: A magnetic element of the present invention includes a magnetic core member and a winding. The magnetic core member includes a central post, at least one lateral post and a winding space, and the winding is disposed in the winding space and around the central post. The central post includes a plurality of central air gaps, and the at least one lateral post includes a plurality of lateral air gaps.

Abstract: A management circuit for a power supply is provided. The power supply includes a power factor correction circuit and a power conversion circuit. An output of the power factor correction circuit is coupled to an input of the power conversion circuit. The management circuit includes a power factor correction controller, a pulse width modulation controller and a control circuit. The power factor correction controller controls power factor correction of the power factor correction circuit. The pulse width modulation controller controls power conversion of the power conversion circuit. The control circuit selectively activates the pulse width modulation controller according to a first activated signal generated by an input power of the power supply. After the pulse width modulation controller is activated, the control circuit generates a second activated signal based on the first activated signal. The control circuit activates the power factor conversion controller according to the second activated signal.

Abstract: A power adapter including a main circuit board and an auxiliary circuit board is provided. The main circuit board has a first surface and a second surface opposite to each other, and the first surface of the main circuit board is configured with a transformer and a first capacitor. The auxiliary circuit board has a first surface and a second surface opposite to each other, and the first surface of the auxiliary circuit board is configured with an input rectifier filter circuit, where the auxiliary circuit board is disposed in parallel above the main circuit board, and the input rectifier filter circuit of the auxiliary circuit board is electrically connected to the first capacitor of the main circuit board. Under a condition of same electrical parameters and dimensions, the volume of the power adapter of the invention is only a half of that of the existing power adapter, which satisfies a demand for miniaturization of the electronic devices.

Abstract: A management circuit for a power supply is provided. The power supply includes a power factor correction circuit and a power conversion circuit. An output of the power factor correction circuit is coupled to an input of the power conversion circuit. The management circuit includes a power factor correction controller, a pulse width modulation controller and a control circuit. The power factor correction controller controls power factor correction of the power factor correction circuit. The pulse width modulation controller controls power conversion of the power conversion circuit. The control circuit selectively activates the pulse width modulation controller according to a first activated signal generated by an input power of the power supply. After the pulse width modulation controller is activated, the control circuit generates a second activated signal based on the first activated signal. The control circuit activates the power factor conversion controller according to the second activated signal.

Abstract: A snubber circuit includes a capacitor and a buffer device. The buffer device has a first terminal and a second terminal. The first terminal is electrically connected to the capacitor. When the buffer device operates in a first conduction mode, a charge current flows from the second terminal to the first terminal through the buffer device. When the buffer device switches from the first conduction mode to a second conduction mode, the buffer device generates a discharge current which flows from the first terminal to the second terminal through the buffer device over a specific period of time, such that after the buffer device enters the second conduction mode, a relative maximum voltage level appearing first at the second terminal is lower than a voltage level at the first terminal.

Abstract: A snubber circuit is provided. The snubber circuit includes a transistor structure and a first capacitor. The transistor structure includes a chip package and two pins. The chip package includes a transistor die and a molding compound encapsulating the transistor die. A first pin of the two pins is electrically connected to a first bonding pad and a second bonding pad of the transistor die, and a second pin of the two pins is electrically connected to a third bonding pad of the transistor die. The first pin or the second pin of the transistor structure is electrically connected to a terminal of the first capacitor.

Abstract: A snubber circuit includes: a capacitor including a first terminal and a second terminal, where the first terminal of the capacitor is electrically connected to a first terminal of the snubber circuit; and a Bipolar Junction Transistor (BJT), where one of the emitter and the collector of the BJT is electrically connected to the second terminal of the capacitor, and the other one of the emitter and the collector of the BJT is electrically connected to a second terminal of the snubber circuit. The snubber circuit can be electrically connected in parallel to an active component or a load to protect the circuitry connected to the load, and more particularly to absorb spike or noise generated during high-frequency switching of the active component to recycle energy, in order to achieve the goal of reducing spike voltages and enhancing efficiency.

Abstract: A cycle modulation circuit for limiting voltage peak value of a power supply employed an active clamp. The power supply receives an input power which is modulated through a power driving unit to become a driving power transformed through a transformer to be output. The cycle modulation circuit includes a comparison unit and a linear voltage generation unit. The comparison unit receives the input power to generate a level signal which is used as a base value to compare level with an oscillation signal generated by the linear voltage generation unit, thereby to modulate and output a pulse width limit signal with a composite cycle consisting of a high level and a low level. The pulse width limit signal is input to the power driving unit to limit the peak value of the driving power modulated by the power driving unit.

Abstract: A snubber circuit includes a capacitor and a buffer device. The buffer device has a first terminal and a second terminal. The first terminal is electrically connected to the capacitor. When the buffer device operates in a first conduction mode, a charge current flows from the second terminal to the first terminal through the buffer device. When the buffer device switches from the first conduction mode to a second conduction mode, the buffer device generates a discharge current which flows from the first terminal to the second terminal through the buffer device over a specific period of time, such that after the buffer device enters the second conduction mode, a relative maximum voltage level appearing first at the second terminal is lower than a voltage level at the first terminal.