Abstract: To prevent generation of a loud impact sound, a tactile generation apparatus is provided with a vibration generator on a back surface of a vibration member. The vibration generator is a solenoid including a movable core and a coil. The movable core is capable of moving close to and away from the vibration member. The coil displaces the movable core toward the vibration member to deform the vibration member when energized, and moves the movable core away from the vibration member when deenergized, so as to vibrate the vibration member due to an elastic restoring force of the vibration member.

Abstract: A feedback network has a feedback output terminal. A digital to analog converter has an analog output terminal. An amplifier includes an input differential pair having an inverting input terminal, a non-inverting input terminal, a first output current terminal and a second output current terminal. The inverting input terminal is coupled to the feedback output terminal, and the non-inverting input terminal is coupled to the analog output terminal. The amplifier includes a feedback differential pair having a third output current terminal, a fourth output current terminal, a first input terminal and a second input terminal. The third output current terminal is coupled to the first output current terminal, and the fourth output current terminal is coupled to the second output current terminal. The amplifier includes an amplifier output terminal coupled to the first input terminal and the second input terminal.

Abstract: An isolated conversion apparatus with magnetic bias balance control includes an isolated converter, a controller, and a magnetic bias balance circuit. The isolated converter includes a transformer, and a primary side of the transformer includes a primary-side winding and at least one switch bridge arm. The controller is coupled to the at least one switch bridge arm, and provides a pulse width modulation (PWM) signal group to control the at least one switch bridge arm. The magnetic bias balance circuit is coupled to two ends of the primary-side winding and the controller, and provides a compensation voltage to the controller according to an average voltage of a winding voltage across the two ends of the primary-side winding. The controller adjusts a duty cycle of the PWM signal group according to the compensation voltage to correct the magnetic bias.

Abstract: The present invention relates to a semiconductor device, wherein the semiconductor substrate includes: a semiconductor layer; and a well region, the semiconductor device includes: a surface electrode provided on a second main surface on a side opposite to a first main surface; a back surface electrode provided on the first main surface; and an upper surface film covering an end edge portion of the surface electrode and at least part of an outer side region outside an end surface of the surface electrode of the semiconductor substrate, the well region includes a portion extending to the outer side region and a portion extending to an inner side region inside the end surface of the surface electrode, and the upper surface film includes at least one outer peripheral opening part provided along an outer periphery of the surface electrode away from the surface electrode of the outer side region.

Abstract: In some examples, an apparatus includes a driver having a driver output, a capacitor having a first plate and a second plate, the first plate coupled to the driver output, and a transistor having a transistor gate, a transistor source, and a transistor drain. The apparatus also includes a first switch coupled between the second plate and the transistor gate, a second switch coupled between the second plate and the transistor drain, and a third switch coupled between the transistor gate and the transistor drain.

Abstract: In some examples, a device includes a selector circuit configured to deliver power to a first driver circuit, where the first driver circuit is configured to activate and deactivate a first switch of a postregulator. The device also includes a startup regulator and a controller configured to cause the selector circuit to deliver power from the startup regulator to the first driver circuit. The controller is also configured to determine that a boost regulator is operational after delivering power from the startup regulator to the first driver circuit. The controller is further configured to cause the selector circuit to deliver power from the boost regulator to the first driver circuit in response to determining that the boost regulator is operational.

Abstract: A power module includes a printed circuit board, a magnetic element, a secondary side switching circuit and at least two groups of external terminals. The magnetic element is disposed on the printed circuit board. The magnetic element includes at least one primary winding and plural secondary windings. The secondary side switching circuit includes a plurality of secondary switching units. Each secondary switching unit includes a plurality of switches connected in parallel. The switches of each secondary switching unit are evenly distributed on a first surface and a second surface of the printed circuit board. The switches of the secondary switching unit on the first surface and the second surface of the printed circuit board are at least partially overlapped with each other. The at least two groups of external terminals are disposed on the second surface of the printed circuit board, and electrically connected with the secondary side switching circuit.

Abstract: A control circuit, system and method for switched-mode power supply are disclosed, the control circuit is for driving a first switch to convert an input voltage into an output voltage. The control circuit includes an on-time control unit, which receives a first signal characterizing switching frequency of first switch and a second signal characterizing current flowing through first switch and responsively generates a signal indicative of a turn-off instant for first switch. When a peak value of the current flowing through the first switch drops below a predefined value, the on-time control unit determines the turn-off instant for the first switch based on the first signal so that the switching frequency of the first switch is maintained at a target frequency. This design can effectively avoid the generation of audible noise, stabilize the output voltage against loading changes while maintaining desirable efficiency, and ensure operational safety of the switched-mode power supply.

Abstract: A power converter assembly includes a semi-conductor module, a heat sink mechanically connected to the semi-conductor module, a first busbar assembly on a first side of the heat sink, and a second busbar assembly on a second side of the heat sink opposite from the first side. The first and second busbar assemblies are electrically connected to one another. A power converter assembly includes a plurality of sets of semi-conductor modules, a common heat sink mechanically connected to each semi-conductor module, a first busbar assembly on a first side of the common heat sink, and a second busbar assembly on a second side of the common heat sink opposite from the first side. The first and second busbar assemblies are electrically connected to one another.

Abstract: A power controller circuit comprises a controller and a bi-directional switching assembly coupled to a sensor configured to sense at least one energy parameter of an energy flowing through the bi-directional switching assembly. The bi-directional switching assembly comprises a controllable switch. The controller is configured to control the controllable switch into a conduction mode during a first portion of an energy cycle of electrical energy supplied to the bi-directional switching assembly to cause the energy to flow through the bi-directional switching assembly. Via the sensor, the controller monitors the at least one energy parameter of the energy flowing through the bi-directional switching assembly. The controller controls the first controllable switch into a non-conduction mode based on an amount of the at least one energy parameter of the energy flowing through the bi-directional switching assembly during the first portion.

Abstract: A half-bridge module having two switching units, each of which includes multiple transistors connected in parallel and/or in series, in particular IGBTs or MOSFETs. The transistors are arranged on a first substrate. The half-bridge module has a temperature sensor matrix having a plurality of temperature sensors, and the temperature sensors are thermally connected to the transistors at least in some regions. A temperature sensor matrix is also provided.

Abstract: A multi-phase voltage converter has a plurality of integrated circuits (ICs), and a controller. Each IC has a power switch, a monitoring pin and a current sense pin. The power switch is controlled to convert an input voltage to an output voltage. The current sense pin is capable of providing a current sense signal representative of a current flowing through the power switch. The controller is capable of providing a clock signal via the monitoring pin, and provides a plurality of data signals via the current sense pin of the plurality of ICs. Each of the plurality of ICs is assigned an identification code based on the clock signal and one of the plurality of data signals.

Abstract: A method of operating an electrical system including an electrical power source configured to supply a first DC voltage at a first voltage level and a DC/DC converter coupled to the electrical power source and configured to supply a second DC voltage is provided. The method includes monitoring a level of current supplied by the DC/DC converter, determining, based on monitoring of the level of the current, that the DC/DC converter is saturated, and in response to determining that the DC/DC converter is saturated, regulating a level of voltage outputby the DC/DC converter. Related DC/DC converters and vehicle electrical systems are disclosed.

Abstract: A snubber circuit connected to a rectifying circuit including a reference voltage node and a switch node, the snubber circuit comprises a snubber capacitor; and a P-type MOS transistor, wherein a positive electrode of the snubber capacitor is connected to the switch node, and a drain of the P-type MOS transistor is connected to a negative electrode of the snubber capacitor, and a source of the P-type MOS transistor is connected to the reference voltage node.

Abstract: A power device is provided. The power device includes a current limiting resistor in series with a load, the current limiting resistor configured to provide a first current path to the load. The power device also includes an inrush current control device configured to provide a second current path to the load, the second current path configured to bypass the first current path in response to the inrush current control device being activated. The power device also includes a bypass device configured to provide a third current path to the load, the third current path configured to provide a low-resistance current path to the load during a power surge.

Abstract: An electronic circuit is provided. The electronic circuit includes a full-bridge rectifier, a spurious tone detection circuit, and a controller. The rectifier circuit has a plurality of switching elements and first and second radio frequency (RF) terminals. The spurious tone detection circuit has a non-linear circuit element and is coupled between the first RF terminal and a first reference terminal. The spurious tone detection circuit provides a non-zero direct current (DC) voltage in response to detecting harmonic tones at the first RF terminal of the full-bridge rectifier circuit. The controller is coupled to the plurality of switching elements. The controller is for controlling the operation of the plurality of switching elements based at least in part on detecting the harmonic tones. In one embodiment, the electronic circuit may be a wireless charging receiver. In another embodiment, a method for detecting harmonic tones in the electronic device is provided.

Abstract: In an embodiment a direct current to direct current (DC-DC) converter includes a first switching circuit configured to switch a supply of an input voltage to an energy storage circuit configured to generate an output voltage, a driving circuit configured to drive the first switching circuit according to a comparison between the output voltage and a comparison voltage and a soft-start circuit configured to raise the comparison voltage from a start voltage to a target voltage during a soft-start phase of the DC-DC converter having a soft-start duration, wherein the soft-start circuit comprises a soft-start capacitor configured to provide the comparison voltage during the start phase, the soft-start capacitor having a soft-start capacitance, an auxiliary capacitor having an auxiliary capacitance, a second switching circuit configured to alternately charge and discharge the auxiliary capacitor with an auxiliary current according to a clock signal having a clock frequency and a charging circuit.

Abstract: A multi-phase switched-mode power supply includes first and second interleaved phase circuits coupled between input and output terminals. The first phase circuit includes a first inductor coupled with a first switch, and the second phase circuit includes a second inductor coupled with a second switch. A control circuit is configured to output first and second PWM signals to the first and second switches. An on time of the second PWM signal is equal to an on time of the first PWM signal plus a fixed offset time period. The control circuit is configured to determine a period between rising edges of the first PWM signal in order to determine an off trigger PWM signal, and change the second PWM signal to a logical low value when a falling edge of the off trigger PWM signal occurs while the second PWM signal has a logical high value.

Abstract: A method for particle abatement in a wafer processing tool implements at least one cleaning-purposed mobile electrostatic carrier (MESC) including electrostatic field generating (EFG) circuits. Each EFG circuit is charged with the cleaning-purposed MESC. The cleaning-purposed MESC is then loaded into the wafer processing tool in a facedown orientation. A normal-purposed MESC is loaded into the wafer processing tool in a faceup orientation. Next, foreign materials are bonded to the cleaning-purposed MESC as the cleaning-purposed MESC is moved along a processing path through the wafer processing tool in the facedown orientation. The normal-purposed MESC travels the processing path during normal operation of the wafer processing tool in the faceup orientation. The cleaning-purposed MESC is then unloaded from the wafer processing tool. Next, the foreign materials are debonded from the cleaning-purposed MESC by discharging each EFG circuit with the cleaning-purposed MESC.

Abstract: Operating an electrical load controller includes, in one aspect, detecting zero-crossings of an AC waveform, determining periods each corresponding to a full cycle of the AC waveform, determining a frequency of the AC waveform based on the determined periods, and controlling a supply of AC power to a load based thereon using the determined frequency to fire a switching circuit of the electrical load controller.