Abstract: A direct current-direct current (DC-DC) converter includes a plurality of switches configured to be coupled to a voltage source. The DC-DC converter also includes a transformer having a primary winding coupled to the plurality of switches and a secondary winding. The DC-DC converter further includes a first capacitor; and a second capacitor, wherein the first capacitor is coupled in series with the primary winding, the second capacitor is coupled in parallel with the secondary winding. The first capacitor, the second capacitor, and a leakage inductance of the transformer form a dual-capacitor resonant circuit.

Abstract: The invention relates to enhanced adjusting of the control variables for a DC-DC converter comprising multiple DC-DC converter modules (30-1, 30-2). For this purpose, alongside the conventional controlling of the individual DC-DC converter modules, an additional correction variable (K-1, K-2) is determined which can be added to the control variable (R4-1, R4-2). In particular, the correction variable can take into account individual properties of the DC-DC converter modules, such as component tolerances or similar. For this purpose, correction values suitable for the individual DC-DC converter modules can be determined in advance and stored in a non-volatile storage means. Using these previously stored links, the control variables for the individual DC-DC converter modules can be individually adjusted.

Abstract: Controller and method for charging one or more loads. For example, the controller for charging one or more loads includes: a controller terminal configured to be biased at a first voltage related to a second voltage of a secondary winding of a power converter, the power converter further including a primary winding coupled to the secondary winding, the power converter being configured to, if the power converter is not unplugged from a voltage supply for an AC input voltage, receive the AC input voltage represented by the second voltage and output an output power to the one or more loads; and a voltage detector configured to: process information associated with the first voltage; and determine whether the AC input voltage is in a first voltage state or in a second voltage state based at least in part on the first voltage.

Abstract: An embodiment circuit comprises first and second output nodes with an inductor arranged therebetween, and first and second switches coupled to opposed ends of the inductor. The switches are switchable between non-conductive and conductive states to control current flow through the inductor and produce first and second output voltages. The current intensity through the inductor is compared with at least one reference value. Switching control circuitry is coupled with the first and second switches, the first and second output nodes, and current sensing circuitry, which is configured to control the switching frequency of the first and second switches as a function of the output voltages and a comparison at the current sensing circuitry. The switching control circuitry is configured to apply FLL-FFWD processing to produce the reference values as a function of a timing signal, targeting maintaining a constant target value for the converter switching frequency.

Abstract: A control circuit for a switching converter, where: the control circuit is configured to generate a switching control signal according to an output voltage of the switching converter to control a switching state of a power transistor in the switching converter, and to adjust an output current of the switching converter; and a change trend of a length of a switching period of the power transistor is opposite to a change trend of the output voltage.

Abstract: A converter system includes a first switch and a controller configured to switch the first switch between first and second states based on input and output voltages of the converter system, wherein the controller includes: a timer unit including a first timer configured to determine a first duration based on a target switching frequency of the converter system, and a second timer configured to determine a second duration based on a predetermined duration equal to or greater than a minimum duration of the first state of the first switch and the input and output voltages; and a control logic unit, configured to switch the first switch from the second state to the first state upon expiration of both the first and second durations.

Abstract: A controller for a multiphase switching converter has a set generation circuit, a frequency divider, and a plurality of sub control circuits. The set generation circuit provides a set signal based on an output voltage and a total current flowing through the plurality of switching circuits. The frequency divider provides a plurality of frequency division signals based on the set signal. The plurality of sub control circuits provides a plurality of switching control signals to control the plurality of switching circuits respectively. Such that when the total current is larger than a current reference, one of the plurality of switching circuits maintains off temporarily, until the total current is less than the current reference, then the one of the plurality of switching circuits are turned on based on the output voltage and a voltage reference.

Abstract: This disclosure describes systems, methods, and apparatus for controlling a voltage provided to a plurality of configurable output modules using a resonant converter, the resonant converter comprising: an inverter circuit; a resonant capacitor bridge coupled across the inverter circuit; N groups of output modules, each of the N groups comprising terminals configured for coupling to up to M output modules, the output modules each comprising: a transformer having a primary and a secondary; and a rectified output coupled to the secondary and configured for coupling to a load; and a resonant inductor network configured to be coupled between the resonant capacitor bridge and the primaries of the transformers, the resonant inductor network comprising: at least one parallel inductor; and N parallel branches arranged in parallel and each branch comprising a series inductor, each of the series inductors configured for transformer-coupling to up to M output modules.

Abstract: A resonant switching power converter includes: a first power stage circuit; a second power stage circuit; a controller; and a current sensing circuit configured to sense a first charging/discharging resonant current flowing through a first charging/discharging inductor of the first power stage circuit and sense a second charging/discharging resonant current flowing through a second charging/discharging inductor of the second power stage circuit, to generate a corresponding first current sensing signal and a corresponding second current sensing signal, respectively. The controller adjusts at least one of a first delay interval, a second delay interval, a third delay interval, a fourth delay interval, and/or input voltages, according to a first current sensing signal and a second current sensing signal, so that a constant ratio between an output current of the first power stage circuit and an output current of the second power stage circuit is achieved.

Abstract: Described herein is a switching regulator that can provide a high current while operating with low noise and low spur. The switching regulator may operate with a varying switching frequency. Spurs at the varying switching frequency may be reduced by compensating an error amplifier, which controls the switching frequency.

Abstract: The disclosure relates to a switched capacitor converter (SCC) with gate driving circuits for limiting currents provided by switching field effect transistors. Embodiments disclosed include an SCC with gate driver curcuits providing gate voltage signals to power FETs, each gate driver circuit comprising first and second gate driver modules and configured to operate in: a first mode in which the first gate driver module provides a gate voltage signal to a power FET that switches between first and second voltage rails by operation of first and second switches connected between the pair of voltage rails; and a second mode in which, in reponse to enabling of a current limit switching signal, the first gate driver module disables switching of one of the first and second switches and the second gate driver module operates to limit a current provided to the power FET.

Abstract: A power conversion device having a multi-phase converter in which a plurality of chopper circuits each including a switching element and a reactor connected to the switching element are connected in parallel is provided. The power conversion device includes a single current sensor that is provided on a primary side of the chopper circuit, and detects a phase current flowing through each of the reactors when the switching elements are in both an on state and an off state, and a drift current detection unit configured to detect a drift current of a phase current in the multi-phase converter on the basis of the phase current detected by the current sensor, wherein the current sensor detects a phase current such that directions of phase currents flowing through each of the reactors are the same as each other.

Abstract: To provide a voltage converter configured to suppress individual variation in voltage conversion ratio and configured to achieve a high voltage conversion ratio. A voltage converter comprising a reactor, a switching element, a diode, a current sensor, and a controller, wherein the controller detects a current value of the reactor several times in a switching period; wherein the controller calculates an estimated execution ON time length from a transition of a current value of the reactor detected in the switching period; wherein the controller calculates a difference between the estimated execution ON time length and a command ON time length instructed by the controller; and wherein, by using the difference, the controller corrects the command ON time length of the time when performing any of subsequent ON commands in a range not exceeding a predetermined command ON time upper limit value.

Abstract: Disclosed are methods, systems, devices, and other implementations, including a voltage converter device that includes one or more inductive elements to deliver inductor current to an output section of the voltage converter device, at least one switching device to control current flow at the output section of the voltage converter device, and a controller to controllably vary, according to a predictive model, a subsequently applied switching frequency to the at least one switching device to maintain zero-voltage switching based, at least in part, on the inductor current of the one or more inductive elements.

Abstract: A power supply used to convert an input voltage into an output voltage, and the power supply includes an input detection circuit, a conversion circuit, a detection circuit, and a controller. The input detection circuit provides a power good signal or a power fail signal according to the input voltage. The conversion circuit converts the input voltage into an output voltage, and the detection circuit detects the output voltage according to the power good signal to accordingly provide an output feedback signal with a first feedback value. The controller stabilizes a voltage level of the output voltage according to the first feedback value. The detection circuit self-adjusts a feedback condition according to the power fail signal, and correspondingly adjusts the output feedback signal to a second feedback value according to the feedback condition. The controller reduces the voltage level of the output voltage according to the second feedback value.

Abstract: A circuit includes two input nodes and two output nodes. A rectifier bridge is coupled to the input and output nodes. The rectifier bridge includes a first and second thyristors and a third thyristor coupled in series with a resistor in series. The series coupled third thyristor and resistor are coupled in parallel with one of the first and second thyristors. The first and second thyristors are controlled off, with the third thyristor controlled on, during start up with resistor functioning as an in in-rush current limiter circuit. In normal rectifying operation mode, the first and second thyristors are controlled on, with the third thyristor controlled off.

Abstract: A control circuit and control method for an interleaved switching converter having a first and second interleaved voltage regulating circuit. The control method is: controlling a first switch of the first voltage regulating circuit operating in quasi-resonant mode, turning ON a second switch of the second voltage regulating circuit after the first switch is turned ON for a half switching period, generating a current sensing signal by detecting a current flowing through the second switch, generating a peak signal, wherein the peak signal is adjusted when a voltage across the second switch is higher than a voltage reference at the time the second switch is turned ON, and turning OFF the second switch when the current sensing signal increases to the peak signal.

Abstract: Power converters can include a plurality of switching devices and a combination of one or more inductors and one or more flying capacitors. Both boost and buck converters may employ such topologies, and can achieve high efficiency and small size in at least some applications, including those with high conversion ratios. A control circuit can generate a first pair of complementary gate drive signals to drive a first complementary switch pairs and a second pair of complementary gate drive signals to drive a second complementary switch pair. The control circuit can vary a phase shift between the first pair of complementary gate drive signals and the second pair of complementary gate drive signals to regulate the flying capacitor voltage.

Abstract: An apparatus such as a power supply circuit includes an input, a signal generator, and a frequency selector. The input receives a signal indicating a magnitude of current supplied by an output voltage of a voltage converter to power a load. The signal generator produces a frequency selection signal based on the magnitude of the current supplied to the load as indicated by the received signal. Via the frequency selection signal, the frequency selector selects a switching frequency of controlling switches in the voltage converter to produce the output voltage. According to one configuration, the signal generator and frequency selector delay increasing the switching frequency from a first switching frequency setting to a second switching frequency setting subsequent to detecting a change in the magnitude of the current.

Abstract: A multi-mode converter using iterative average current mode pulse width modulation (PWM) control is provided. The converter may include a current sense amplifier configured to output a current sense signal over a present switching cycle based on an inductor current through an inductor, a voltage error amplifier configured to output an error voltage based on a difference between a reference voltage and an output voltage, and a PWM controller. The PWM controller may include an error voltage modifier circuit configured to selectively output the error voltage or a modified error voltage based on a mode signal, and an iterative average current control circuit configured to generate a PWM signal based on the output from the error voltage modifier circuit, the current sense signal over the present switching cycle and a current sense signal over a previous switching cycle that precedes the present switching cycle.