Abstract: The present invention aims to provide a power converter, which includes a plurality of switching power supply devices connected in parallel, with a circuit configuration that enables reduction of cost and a size of the power converter. The present invention relates to a power converter including at least a first switching power supply device and a second switching power supply device connected in parallel. A part of high-voltage-compatible switching elements is commonly used between the first switching power supply device and the second switching power supply device, and a drive gate signal of one of the high-voltage-compatible switching elements of the first switching power supply device and the second switching power supply device and a phase difference of a drive gate signal of the commonly used switching power supply device are set to be equal when a load current is a first current value or lower.

Abstract: These teachings apply with respect to a direct current (DC)-output converter and provide for adjusting a number of switching pulses per burst cycle as a function, at least in part, of converter output loading. This adjustment can be made by controlling burst frequency with respect to at least one predetermined threshold frequency. The predetermined threshold frequency can comprise a non-audible frequency such that the number of switching pulses is adjusted to prevent the burst frequency from itself constituting an audible signal. The adjustment of the number of switching pulses per burst cycle may only occur when the output loading is less than a predetermined level of loading. These teachings may also provide for clamping the pulse frequency for the pulses in each burst package to a particular value when dynamically controlling the number of pulses in each burst package. The aforementioned particular value may constitute, for example, a highest available switching frequency.

Abstract: A first drive circuit Da includes a temperature information transmission unit that transmits a binary output signal changing between High and Low and an abnormality information transmission unit that transmits an output signal fixed to Low, and a second drive circuit Db includes the abnormality information transmission unit. A temperature information signal and an abnormality information signal from the first drive circuit Da are subjected to OR operation on the side nearer the first drive circuit Da than to a magnetic coupler Ma so the abnormality information signal takes precedence when the abnormality information signal represents an abnormality, or on the side nearer a control unit than to the insulation elements Da and Db so the output signal from the insulation element Db takes precedence when the abnormality information signal from the second drive circuit Da represents an abnormality, and then the logical sum is output to the control unit.

Abstract: The invention relates to a closing plate (3) for a windscreen wiper drive motor device (1) for a motor vehicle, said device (1) being of the type comprising a support (2), a shaft (5) being received therein, said shaft bearing an endless screw (6) which is capable of being driven in rotation by a motor (7), and being of the type in which said support (2) comprises a bush mounting (17) for receiving a bush (18) which is capable of supporting one end (5a) of the shaft (5), said plate (3) comprising a base (14) which is capable of closing said support (2), the closing plate (3) being characterized in that it comprises a closing tongue (20) which is made of the same material as the base (14) and serves as a water deflector for an orifice (19) formed in the end of the bush mounting (17) in the axis of rotation of the shaft (5). The inventor further relates to a windscreen wiper drive motor device for a motor vehicle comprising a closing plate.

Abstract: Methods and apparatus for reducing electromagnetic interference in a power converter using phase hopping in conjunction with pulse width modulation are disclosed. An example power converter includes an input voltage to, when a control switching device receives a first voltage, increase an output voltage; and when the control switching device receives a second voltage, decrease the output voltage. The example power converter further includes a phase hopping generator to generate a phase varying signal corresponding to two or more phases, the phase varying signal corresponding to a reference voltage; and output the phase varying signal to control the control switching device.

Abstract: A DC-DC power converter includes an input, an output, a transformer, a primary field-effect transistor (FET), and a synchronous rectifier. The synchronous rectifier includes a drain that experiences multiple resonant voltage valleys during each dead-time period of the converter. The converter further includes a synchronous rectifier drive circuit configured to turn on and turn off the synchronous rectifier, and a primary control circuit. The primary control circuit is configured to operate the primary FET in a valley skipping mode, and to transmit a drive signal to the synchronous rectifier drive circuit to turn on the synchronous rectifier during a specified one of the multiple resonant voltage valleys to generate a negative current through the synchronous rectifier. Methods of operating a DC-DC power converter are also disclosed.

Abstract: Provided is a power conversion device including: a step-up converter unit, including a reactor to which a DC voltage is to be input, a switching element connected to the reactor in parallel, and a backflow prevention element connected to the reactor in series; a smoothing capacitor configured to smooth an output voltage from the step-up converter unit; an inverter unit configured to convert the output voltage smoothed in the smoothing capacitor into an AC voltage; a dew condensation state detection unit configured to detect a state of dew condensation, which occurs due to a cooler configured to cool the step-up converter unit and the inverter unit; and a control unit configured to control an operation of the step-up converter unit, wherein the control unit includes: a determination unit configured to determine the state of dew condensation detected by the dew condensation state detection unit; and a step-up control unit configured to control a step-up operation of the step-up converter unit based on a result

Abstract: A bidirectional converter with high voltage gain and low switch voltage stress is provided. The bidirectional converter has a first input-output terminal and a second input-output terminal, and includes first and second inductors, first and second high side switch modules, first and second low side switch modules, a first clamping capacitor, first and second capacitors, and a switching control circuit. The switching control circuit is configured to switch between three switching modes.

Abstract: A buck voltage converter is provided which is configured so that a dominant pole of an open loop transfer function of the buck voltage converter is a pole introduced by a network comprising an inductor and a capacitor coupled to an output of the buck voltage converter.

Abstract: A resonant converter adopts adaptive on-time control to provide better transient response. When the output voltage of the resonant converter varies, the on-time length of a power switch in power stages is adjusted, so that the switching frequency and the gain are regulated and optimized.

Abstract: An electrical power supply device includes a DC-DC power convertor receiving an input voltage and producing an output voltage, a first and second port connected to the DC-DC power convertor supplying electrical power to a first and second consumer device, and a device controller connected to the DC-DC power convertor, the first and second port. The memory device controller stores instructions to command the DC-DC power convertor to produce the output voltage between a first voltage threshold and a higher second voltage threshold when only the first consumer device is connected to the first port. The memory stores additional instructions which commands the DC-DC power convertor to produce the output voltage at the first voltage threshold when the first consumer device is connected to the first port and the second consumer device is connected to the second port.

Abstract: In an example, an apparatus includes: a pass device coupled between a supply voltage node and a load circuit and to provide a regulated voltage to the load circuit in response to a control signal received at a control terminal of the pass device; a first amplifier to compare a reference voltage to the regulated voltage and to output a comparison signal at a comparison node in response to the comparison; a second amplifier having an input device having a control terminal coupled to the comparison node to receive the comparison signal and to output the control signal to the pass device based at least in part in response to the comparison signal; and a feedback circuit to provide a feedback signal to the first amplifier based at least in part on a load current of the load circuit.

Abstract: A circuit includes a drain detect circuit. The drain detect circuit receives a sense signal from a secondary side of a power converter circuit, determines, using voltage values of the sense signal, whether a primary side switch of the power converter circuit has been turned on, and assert a switch on detect signal in response to determining that the primary side switch has been turned on. The circuit may assert an enable signal in response to the assertion of the switch on detect signal, and de-asserts the enable signal in response to an assertion of a control signal. The control signal may only allowed to be asserted when the enable signal is asserted. The control signal may control a Synchronous Rectifier device. The power converter circuit may be a flyback converter, and the primary side switch may control a current into a primary-side coil of a transformer.

Abstract: Generally speaking, a timing circuit helps determine diode conduction time of an LLC converter. In some examples, the circuit includes an LLC converter having a secondary side and a timing circuit, the timing circuit coupled to the LLC converter on the secondary side. The timing circuit includes a first branch, second branch, gate, and microprocessor. The gate is configured to receive an output of the first branch's comparator and a blanking signal from the second branch. The microprocessor is configured to receive, from the gate, a signal and determine, based at least in part on the signal, a diode conduction time for the LLC converter.

Abstract: A driving controller for driving a transistor, includes an operation unit, a first adjustment unit, a second adjustment unit, a first comparator, a comparison unit. A first terminal of the transistor receives an operation voltage. The operation unit is coupled to a control terminal of the transistor. The first adjustment unit is used to increase a voltage of the control terminal of the transistor. The second adjustment unit is used to decrease the voltage of the control terminal of the transistor. The first comparator and the comparison unit are coupled to the first terminal of the transistor and used to compare the operation voltage with a first reference voltage to a third reference voltage respectively so that the transistor may be controlled accordingly.

Abstract: In a signal transmission circuit including a drive circuit and a control apparatus which are insulated from each other and between which a signal indicative of predetermined information is transmitted via a magnetic coupler, the drive circuit includes a temperature information transmission unit transmitting a first signal indicative of temperature information based on the number of pulses consecutively output with a predetermined period and each having a first waveform with a duty cycle of less than 100% with respect to the period and an abnormality information transmission unit transmitting a second signal indicative of abnormality information based on a pulse having a longer wavelength than the first waveform. The temperature information transmission unit transmits the first signal to the control apparatus and the abnormality information transmission unit transmits the second signal to the control apparatus, via the magnetic coupler common to two information transmission units.

Abstract: A control system and a method for an on-board battery charger (OBC) of a vehicle generate a DC link voltage instruction through a proportional integral control that regards, as an instruction, a resonance switching frequency determined by a resonance capacitance and a resonance inductance of the LLC converter and allow the switching frequency of an LLC converter to operate at the resonance frequency, thus enhancing efficiency of the OBC.

Abstract: In summary, a switching circuit comprising a high side (HS) switch coupled to the output, a low side (LS) switch comprising a MOSFET coupled to the output, and a slope regulator core coupled to the gate of said low side (LS) switch configured to provide control signals to said slope regulator core. In addition, a method of providing a method of a switch circuit comprising the steps the first step, (a) providing a circuit comprising a low side (LS) switch, a high side (HS) switch, and a slope regulator wherein said slope regulator comprises a fast mode, a slope regulator mode, and a hold mode, the second step (b) activating said slope regulator, the third step (c) choosing a fast mode or a slope regulation mode, the fourth step (d) applying either a fast mode or slope regulation mode; the fifth step (e) evaluating the polarity of the signal, the sixth step (f) toggle signal hold_on if the gate is low or toggle signal hold_off if the gate is high.

Abstract: A method for communicating with a power converter comprises initiating a communication sequence by sensing a first distortion of a sensed waveform during a discharge period of a first power transfer cycle of the power converter. The sensed waveform is proportional to a secondary current of the power converter. At a primary side of the power converter, a data bit is received from a secondary side of the power converter, by sensing a second distortion to represent one state of the data bit and sending an absence of the second distortion to represent another state of the data bit. The secondary distortion is applied to the secondary current during the discharge period of a subsequent power transfer cycle.

Abstract: An energy supply device for providing electric energy, wherein the energy supply device has at least one input interface for receiving electric energy and an output interface for outputting electric energy, and wherein at least one supercapacitor is connected between the input interface and the output interface.