Abstract: An SMPS current mode control loop with an adjusted cycle-by-cycle peak current limit for buck and boost (and bidirectional buck/boost) regulators. An SMPS regulator can include a PWM driver to drive switching control signals with a PWM duty cycle to an output terminal OUT, and a PWM controller to control the PWM duty cycle based on a current mode control loop that includes slope compensation to provide a signal VPK corresponding to a current sense signal from a current sense terminal CS, based on sensed peak current through the energy storage element, superimposed with an injected slope compensation current corresponding to a predefined slope compensation based on PWM duty cycle.

Abstract: System and method for regulating a power converter. The system includes a first signal processing component configured to receive at least a sensed signal and generate a first signal. The sensed signal is associated with a primary current flowing through a primary winding coupled to a secondary winding for a power converter. Additionally, the system includes a second signal processing component configured to generate a second signal, an integrator component configured to receive the first signal and the second signal and generate a third signal, and a comparator configured to process information associated with the third signal and the sensed signal and generate a comparison signal based on at least information associated with the third signal and the sensed signal.

Abstract: Circuits and methods to compensate leakage current of a LDO regulator are disclosed. The compensation is achieved by a temperature dependent sink current generation, matched with its temperature dependency characteristic to the LDO regulator output transistor leakage, which has a nearly zero current consumption increase of about 50 nA at room temperature and starts sink current at temperatures about above 85 to 125 degrees Celsius, which is corresponding to a range of temperature wherein leakage currents come into account.

Abstract: A power converter for converting input power to output power includes a first transformer circuit, a second transformer circuit, and balance circuitry. The first transformer circuit includes a first primary winding for receiving a first part of the input power and a first secondary winding for generating a first part of the output power. The second transformer circuit includes a second primary winding for receiving a second part of the input power and a second secondary winding for generating a second part of the output power. The balance circuitry is coupled to a first terminal of the first secondary winding and a second terminal of the second secondary winding, and operable for balancing the first and second parts of the output power by passing a signal between the first and second terminals. The first and second terminals have the same polarity.

Abstract: In one example, a power converter includes a modular multilevel converter (MMC) electrically coupled between a first power system and a second power system. The MMC includes an arrangement of switching submodules, and the switching submodules include an arrangement of switching power transistors and capacitors. The MMC also includes a controller configured to inject a common mode frequency signal into a circulating current control loop. The circulating current control loop is relied upon to reduce at least one low frequency component in power used for charging the capacitors in the switching submodules. By injecting the common mode frequency signal into the circulating current control loop, the switching submodules can be switched at higher frequencies, the capacitances of the capacitors in the MMC can be reduced, and the power density of the MMC can be increased.

Abstract: A topology of composite cascaded high-voltage and low-voltage modules is provided. It includes at least one high-voltage module, at least one low-voltage module, at least one local control circuit and at least one DC-to-DC module. At least one high-voltage module is connected with at least one low-voltage module in cascade manner. At least one local control circuit outputs at least one signal to at least one high-voltage driving circuit and at least one low-voltage driving circuit. An input of at least one DC-to-DC module is connected with two ends of a low-voltage bus capacitor, for receiving a low-voltage DC bus voltage and converting the low-voltage DC bus voltage into a DC output voltage, so as to provide one or more of at least one high-voltage driving circuit, at least one low-voltage driving circuit and at least one local control circuit with a power supply.

Abstract: A configuration is realized that can subject, when operation of a multiphase conversion unit starts, voltage conversion units to control of gradually increasing a target value for output, and can suppress a reverse flow, more easily and further avoiding a loss. A multiphase converter is provided with a control unit configured to control a multiphase conversion unit, and the control unit sequentially drives, when operation of the multiphase conversion unit is started, a plurality of voltage conversion units by offsetting the points in time at which the driving is started against each other. Also, the control unit determines, each time the driving of a voltage conversion unit is started, whether or not the value detected by the detection unit has reached an individual threshold associated with the number of driven voltage conversion units, and starts to drive the next voltage conversion unit when the value has reached the individual threshold.

Abstract: A power supply unit includes a transformer including a primary winding that receives an alternating-current voltage and a secondary winding including a first end electrically connected to ground, a positive-side rectification circuit including a diode electrically connected to a second end of the secondary winding, an anode of which is electrically connected to the second end, and a cathode of which is electrically connected to a positive-side output terminal, a negative-side rectification circuit including a diode electrically connected to the second end of the secondary winding, a cathode of which is electrically connected to the second end, and an anode of which is electrically connected to a negative-side output terminal, and a capacitor provided on a path from a node between the second end of the secondary winding and the positive-side rectification circuit and the negative-side rectification circuit to the ground through the secondary winding.

Abstract: A switching converter, including an input interface for providing an input voltage, an output interface for providing at least one output voltage, a voltage conversion device for converting the provided input voltage into one of the at least one output voltage, and a clock generator for providing a working clock, the clock generator being configured in such a way that the clock generator provides a modulated basic clock as the working clock. A control unit including such a switching converter, and a method for operating such a switching converter, are also described.

Abstract: A magnetic device assembly is provided for maximizing the size of the magnetic components for a predetermined power converter module by co-locating and sharing input, output, and auxiliary terminals between the substrates for the power converter and the magnetic components. Wherein complete power module is the result of constructing the separate constituent parts which include an integrated magnetic substrate, magnetic elements mounted therein, a power converter substrate, associated incorporated components located top and bottom on the power converter substrate, a composite mechanical footprint as defined by the mechanical extents of the integrated magnetic substrate and power converter substrate, and a composite electrical pinout as defined by the input-output pins which are coincident to and co-located as those of the integrated magnetic and power converter substrates.

Abstract: A maximum power point tracking method includes: configuring a voltage tuning direction of a power converter by a process circuit such that the input voltage of the power converter changes in a positive or a negative trend; detecting the corresponding input voltage and input current of the power converter sequentially to obtain multiple powers; and when the powers decrease for N times continuously, change the voltage tuning direction of the power converter such that the change of the input voltage switches from positive trend to negative trend, or from negative trend to positive trend, in which N is an integer greater than or equal to 2.

Abstract: An output circuit at the output of an LDO regulator has two FETs (Field-Effect Transistors), a current source and a capacitor. The first FET is connected to the LDO output and a second voltage supply. The second FET is connected in series with the current source between the LDO output and the second voltage supply. The second FET is connected to the first FET in such a matter that a bias voltage is supplied to the first FET so that in static conditions the first FET draws predetermined amounts of current from the LDO output and to divert the predetermined amounts of current to the LDO output or to draw additional amounts of current from the LDO output to compensate for transient currents on the LDO output and to reduce variations in the output voltage of the LDO regulator.

Abstract: A voltage regulator circuit comprises: a pass transistor comprising a gate, a source, and a drain; an error amplifier comprising an output port coupled to the gate of the pass transistor, a first input port, and a second input port; a feedback circuit coupled to the drain of the pass transistor, and coupled to the first input port of the error amplifier to provide a feedback voltage at the first input port of the error amplifier; a sink transistor comprising a gate, a source, and a drain coupled to the drain of the pass transistor; a sink gate voltage circuit coupled to the gate of the sink transistor to provide a gate voltage at the gate of the sink transistor; and a pass gate sensing circuit coupled to the output port of the error amplifier to provide current to the sink gate voltage circuit.

Abstract: A method of setting a reference DC-link voltage of a wind-turbine converter system is provided. At least at least one DC voltage demand from at least one generator-side inverter and at least one DC voltage demand are received from at least one grid-side inverter. A generator-side DC voltage demand value on the basis of the at least one DC voltage demand received from the at least one generator-side inverter. Also a grid-side DC voltage demand value is determined on the basis of the at least one DC voltage demand received from the at least one grid-side inverter. The highest DC voltage demand value out of the generator-side and grid-side DC voltage demand values is chosen. This chosen value corresponds to the set reference DC-link voltage.

Abstract: A switch-mode power supply includes a transformer, a power transistor, pulse generation circuitry, and a dual ramp modulation (DRM) circuit. The power transistor is coupled to a primary coil of the transformer. The pulse generation circuitry is configured to generate a power transistor activation signal. The DRM circuit is coupled to the pulse generation circuitry. The DRM circuit is configured to generate a leading edge blank time signal that disables inactivation of the power transistor activation signal for a predetermined interval (a leading edge blank time) after a leading edge of the power transistor activation signal. The DRM circuit is also configured to generate a reset signal that inactivates the power transistor activation signal while the leading edge blank time signal is activated.

Abstract: A switching device and a power semiconductor module are configured with a substrate, a power semiconductor component arranged thereupon and with a load connection device. The substrate incorporates mutually electrically-insulated printed conductors and wherein the load connection device, preferably for an AC potential, comprises at least two partial connection devices, having mutually corresponding contact surfaces and being interconnected in an force-fitted or materially-bonded manner and, on the contact surfaces, an electrically conductive manner, wherein a first partial connection device has a first contact device, which is force-fitted or materially-bonded to the printed conductor of the substrate, and wherein a second partial connection device has a second contact device for the further, preferably external, connection of a load connection device.

Abstract: A power conversion device includes a switching element, a gate drive unit, a switch circuit unit, a DC power supply unit, and a control unit. The control unit controls a plurality of switch circuit units and a plurality of gate drive units. During a normal period, the control unit causes a first switch and a second switch to be closed, and causes a signal from the gate drive unit to continue a high level or a low level. Furthermore, during a switching period, the control unit causes the first switch and the second switch to open, and switches a signal from the gate drive unit from a low level to a high level or from a high level to a low level.

Abstract: A step down convertor with a distributed driving system. In one embodiment, an apparatus is disclosed that includes an inductor coupled to an output node. The apparatus also includes first and second circuits. The first circuit can transmit current to the output node via the inductor, and the second can transmit current to the output node via the inductor. The apparatus also includes a third circuit for modifying operational aspects of the first circuit or the second circuit based on a magnitude of current flowing through the inductor.

Abstract: A DC-DC converter with a high transformer ratio includes two DC-DC converter bodies with inputs connected in parallel and outputs connected in series so as to ensure the high safe reliability and the high energy conversion efficiency of the DC-DC converter, while increase the boost ratio of the DC-DC converter.

Abstract: A method and circuit arrangement is described for start-up and shut-down of high power DC to AC inverters which limits inrush current for capacitor charging, reduces input and output relay contact stress and discharges internal capacitors upon shut down. A preferred inrush limiting component has a higher resistance when hot than when cold, such as an incandescent filament lamp.