Abstract: A semiconductor device includes an upper switching element, a lower switching element, an upper capacitor, and a lower capacitor. The upper switching element is formed by a wide-gap semiconductor and includes a first upper terminal, a second upper terminal, and an upper control terminal. The lower switching element is formed by a wide-gap semiconductor and includes a first lower terminal, a second lower terminal, and a lower control terminal. The upper capacitor is provided between the first upper terminal and the upper control terminal separately from the upper switching element. The lower capacitor is provided between the first lower terminal and the lower control terminal separately from the lower switching element. The second upper terminal and the first lower terminal are electrically connected.

Abstract: A semiconductor module arrangement includes an input stage including a first output terminal and a second output terminal, wherein a first inductive element is coupled to the first output terminal; an output stage including at least one first controllable semiconductor element, a third input terminal coupled to the first inductive element such that the first inductive element is coupled between the first output terminal and the third input terminal, a fourth input terminal coupled to the second output terminal, a third output terminal, and a fourth output terminal; a second controllable semiconductor element and a first capacitive element coupled in series and between a first common node coupled between the first inductive element and the third input terminal, and a second common node coupled between the second output terminal and the fourth input terminal; and a first diode element coupled in parallel to the second controllable semiconductor element.

Abstract: Aspects of the disclosure provide for a circuit. In at least some examples, the circuit includes a high-side power transistor, a low-side power transistor, a first transistor, a second transistor, and a third transistor. The high-side transistor is adapted to couple between an input node and a switch node. The low-side transistor is coupled between the switch node and ground. The first transistor is adapted to couple between a first node and the switch node. The second transistor is coupled between the first node and an output node. The third transistor is coupled between the first node and ground.

Abstract: A driving circuit for driving a synchronous rectifier device. The driving circuit may include a controllable charging circuit and a slope sensing circuit. The slope sensing circuit may sense whether an abrupt rising change in a voltage drop from a sensing terminal to a reference ground terminal of the driving circuit is occurring, and provide a slope sensing signal in response to a rising edge of the abrupt rising change in the voltage drop. The controllable charging circuit may receive the slope sensing signal and provide a charging current to a supply terminal of the driving circuit in response to each rising edge of the abrupt rising change in the voltage drop.

Abstract: The technology described herein is directed to a DC input power supply unit with an auxiliary boost control circuit (or controller) that facilitates continuous supply of power to a standby output load of the power supply unit in a bootloader mode. More specifically, the auxiliary boost circuit (or controller) is configured to assume control of a primary power boost stage from a primary controller in a bootloader mode so that the power supply unit can continue to supply power to the standby output with a protection function regardless of the state of the power supply unit or primary controller.

Abstract: A renewable energy power control device may include a boost converter that receives and boosts up an input source and supplies the boosted input source to an output stage, and a control unit that controls, by using a sampling voltage of the output stage, such that the output stage does not fall below a reference voltage, and, by using a sampling voltage of the input source, such that optimal power is supplied to a charging module or additional module connected to the input source. Therefore, the charging module or additional module can use the power supply of the input source, the output stage is driven without falling below the reference voltage, the charging module or additional module is also driven, and renewable energy can be used by controlling a boost converter such that an output stage is within a reference voltage range and other modules can use the input source.

Abstract: A power conversion apparatus includes a rectifier to convert AC power into constant-current DC power, a resonant inverter to convert the DC power into AC power to be output to a load, and a control unit to receive settings of an output current value of the inverter, a current-supplying time of the inverter, an operation rate defined by dividing the current-supplying time by a sum of the current-supplying time and a non-current-supplying time, and a resonance frequency of the load. The control unit operates the rectifier and the inverter only when it determines that it is operable to perform an output in accordance with the set conditions, based on data in which the output frequency, the current-supplying time and the operation rate are associated with an allowable output current value of the inverter at a temperature equal to or lower than a maximum operable temperature of a switching device.

Abstract: Disclosed herein is a bridge rectifier and associated control circuitry collectively forming a “regtifier”, capable of both rectifying an input time varying voltage as well as regulating the rectified output voltage produced. To accomplish this, the gate voltages of transistors of the bridge rectifier that are on during a given phase may be modulated via analog control (to increase the on-resistance of those transistors) or via pulse width modulation (to turn off those transistors prior to the end of the phase). Alternatively or additionally, the transistors of the bridge rectifier that would otherwise be off during a given phase may be turned on to help dissipate excess power and thereby regulate the output voltage. A traditional voltage regulator, such as a low-dropout amplifier, is not used in this design.

Abstract: A DC-to-DC converter includes a first capacitor, first, second, third, and fourth switches connected in series between first and second electrodes of the first capacitor, a second capacitor connected to a connection node of the first switch and the second switch and a connection node of the third switch and the fourth switch, an inductor connected to a connection node of the second switch and the third switch, and a controller that controls an on/off state of each of the first to fourth switches on the basis of a value obtained by applying a reciprocal of a detection current that is a measured current flowing through the inductor to a difference between a first detection voltage and a first voltage instruction value and a difference between a second detection voltage and a second voltage instruction value.

Abstract: A switching power supply circuit with synchronous rectification has an energy storage component, a SR switch coupled to a secondary side of the energy storage component, and a secondary control circuit. The secondary control circuit has a turning-ON control circuit for providing a turning-ON control signal based on a comparison of a drain to source sensing voltage of the SR switch and a turn ON threshold, a mode determination circuit for providing a mode signal to determine a turn ON delay based on a detection to a transient event or the drain to source sensing voltage ringing of the SR switch, and a gate driver circuit for driving the SR switch. When the turning-ON control signal is asserted, the gate driver circuit charges a gate voltage of the SR switch after the turn ON delay based on the mode signal, to turn ON the SR switch.

Abstract: A power supply control device includes a switch control unit configured to control ON/OFF of a switching device of a boost chopper by using an oscillation wave, a comparison voltage generating unit configured to charge or discharge comparison capacitor that generates a comparison voltage for comparison with the oscillation wave in correspondence with a DC output voltage outputted from the boost chopper, an input increase detecting unit configured to detect whether a detection value corresponding to current flowing through the boost chopper has increased to or above a detection criterion, an output voltage detecting unit configured to detect whether the DC output voltage is at or above the lower limit voltage, a discharging unit configured to discharge the comparison capacitor when the detection value has increased to or above the detection criterion and the DC output voltage is at or above the lower limit voltage.

Abstract: A system has an input voltage source, a power stage coupled to the input voltage source, a load coupled to an output node of the power stage and a control circuit, the control circuit implemented on a semiconductor die and including: an error amplifier having a first input, a second input and an output; a voltage divider coupled to the output node and configured to provide an output voltage sense value to the first input of the error amplifier; and a programmable reference voltage circuit with an output coupled to the second input of the error amplifier. The programmable reference voltage circuit includes: a reference voltage source; scaling circuit components between the reference voltage source and the second input of the error amplifier; and a switch between the reference voltage source and the second input of the error amplifier. The control circuit is coupled to the power stage and is configured to generate a control signal for switches of the power stage.

Abstract: A power supply apparatus includes a rectifier unit, a power factor correction circuit, and a control unit. The control unit correspondingly provides a reference voltage according to an amplitude of an input power source. When a voltage signal corresponding to an inductance current of an inductor of the power factor correction circuit is higher than the reference voltage, the control unit controls an energy release switch of the power factor correction circuit to be repeatedly switched on/off, and when the voltage signal is lower than the reference voltage, the control unit controls the energy release switch to be turned off.

Abstract: An apparatus including: a switching converter having a main switch configured to provide power to a transformer, an auxiliary switch configured to provide a release path for leakage inductance energy of the transformer, and a clamp capacitor coupled in series with the auxiliary switch; and a control circuit configured to control the main switch to be off and the auxiliary switch to operate to discharge the clamp capacitor when in an over-voltage protection mode. A method of controlling the switching converter can include: controlling the main switch to be off; and controlling the auxiliary switch to operate to discharge the clamp capacitor when in an over-voltage protection mode.

Abstract: Various embodiments include a method for operating a bidirectional voltage converter with an input-side half-bridge, an output-side half-bridge, and a bridge branch having a bridge inductance, comprising: determining an actual mean bridge current value flowing through the bridge branch during a respective subsequent switching cycle T1 of the transistor switches in a respective current switching cycle T0; determining switch-on time points and switch-on durations of the respective transistor switches for the respective subsequent switching cycle T1; and switching on the respective transistor switches at the respective ascertained switch-on time points and for the respective ascertained switch-on durations in the respective subsequent switching cycle T1.

Abstract: A switching power supply includes: a DC-DC converter including a switching element and configured to output electric power input from an input terminal to an output terminal; a current detector configured to detect a load current output to the output terminal and to output a voltage corresponding to the load current as a detection result; a time constant circuit having a predetermined charging time constant; a time constant circuit controller configured to be connected to the current detector and the time constant circuit and configured to output a charging current based on the detection result to charge the time constant circuit or discharge charge charged in the time constant circuit as a discharging current on based on a comparison between the detection result output by the current detector and a reference voltage.

Abstract: A power conversion apparatus includes a rectifier to convert AC power into constant-current DC power, a resonant inverter to convert the DC power into AC power to be output to a load, and a control unit to receive settings of an output current value of the inverter, a current-supplying time of the inverter, an operation rate defined by dividing the current-supplying time by a sum of the current-supplying time and a non-current-supplying time, and a resonance frequency of the load. The control unit operates the rectifier and the inverter only when it determines that it is operable to perform an output in accordance with the set conditions, based on data in which the output frequency, the current-supplying time and the operation rate are associated with an allowable output current value of the inverter at a temperature equal to or lower than a maximum operable temperature of a switching device.

Abstract: First and second FETs of a half-bridge are series connected between first and second terminals and are gate driven, respectively, by first and second drivers. An inductance is connected to the intermediate node of the half-bridge. Power supply for the second driver circuit is a supply voltage generated by a voltage regulator as a function of the voltage between the first and the second terminal. Power supply for the first driver circuit is a supply voltage generated by a bootstrap capacitor having a first terminal connected via a first switch to receive the supply voltage output from the voltage regulator and a second terminal connected to the intermediate node. The first terminal of the bootstrap capacitor is further connected by a second switch to receive a second supply voltage. A control circuit generates control signals for the first and second driver circuits and the first and second switches.

Abstract: A switching regulator circuit to convert an inputted first voltage to a second voltage by turning on and off a switching device and to output the second voltage to a load includes: a load current determination unit configured to determine a level of a load current passing the load connected to the switching regulator circuit; a switching frequency setting unit configured to set a switching frequency for the switching device according to a result of determination by the load current determination unit; and a switching control unit configured to turn on and off the switching device at the switching frequency set by the switching frequency setting unit.

Abstract: An apparatus for power conversion includes a transformation stage for transforming a first voltage into a second voltage. The transformation stage includes a switching network, a filter, and a controller. The filter is configured to connect the transformation stage to a regulator. The controller controls the switching network.