The invention concerns an electronic device for controlling a converter from an input voltage to at least one output voltage, comprising a first bridge comprising two first switching branches, each between two terminals of the input voltage and comprising two first switches connected at a first midpoint; at least one second bridge comprising two second switching branches, each between two terminals of the output voltage and comprising two second switches connected at a second midpoint; at least one pair of first and second piezoelectric assemblies, each connected between respective first and second midpoints, distinct from one piezoelectric assembly to the other.

The control device commands, during a respective resonance cycle of the piezoelectric assemblies, a switching of each of the switches to alternate phases at substantially constant voltage across the piezoelectric assemblies and phases at substantially constant load across said piezoelectric assemblies.

It further commands, during each phase with a substantially constant load, into the closed position at the same time at most one respective switch among the switches directly connected to the first piezoelectric assembly and at most one respective switch among the switches directly connected to the second piezoelectric assembly, and into the open position all the other switches of the first and second switching branches.

A multi-output power conversion apparatus capable of integrally operating an auxiliary battery includes a high voltage battery configured to output a first power and a power conversion unit. The power conversion unit is configured to convert the first power into a second power and to convert the second power into a third power with multiple outputs to supply it to each of a plurality of electric part loads with different power consumption magnitudes.

A DC-DC converter includes: a power stage having an inductor and a plurality of switches, for generating a plurality of output voltages from an input voltage; a control circuit, for performing time multiplexing constant charge transfer control having valley current control by transferring electrical energy from the input voltage to the plurality of output voltages sequentially one-by-one, further generating a control voltage to control respective output charges of the plurality of output voltages as respective constant predetermined values, and response to all load currents for making input power and output power balance by automatically generating a valley current so that the DC-DC converter switches between DCM and CCM; and a logic control and gate driver for generating a plurality of switch control signals, the plurality of switch control signals for controlling the plurality of switches of the power stage.

A hybrid switching power converter is configured to perform power conversion between a first power, a second power, and a third power. The hybrid switching power converter includes a switched inductor conversion circuit and a switched capacitor conversion circuit, wherein the switched inductor conversion circuit is configured to perform the power conversion between the first power and the second power, and the switched capacitor conversion circuit is configured to perform the power conversion between the second power and the third power. The switched inductor conversion circuit includes a plurality of inductor switches, wherein the plural inductor switches include a first switch and a second switch. The switched capacitor conversion circuit includes a plurality of capacitor switches, wherein the plural capacitor switches include the first switch and the second switch.

In described examples, a power management circuit includes a voltage sensor and a differential power converter. The voltage sensor is coupled in series with other voltage sensors between a high voltage bus and a ground bus. The voltage sensor senses a voltage across an impedance and outputs a control signal in response to the sensed voltage. The differential power converter is coupled in series with other differential power converters and in parallel with a load between the high voltage bus and the ground bus. The differential power converter is configured to increase or decrease a supplied current in response to a change in magnitude of the control signal.

In one embodiment, a method includes: enabling a pulse pair circuit of an integrated circuit in response to determining that a receiver associated with the integrated circuit is active; identifying that at least one comparator of a multi-output DC-DC converter trips, the DC-DC converter having a plurality of comparators each to compare a regulated voltage output by the DC-DC converter to a corresponding reference voltage; and generating, in the pulse pair circuit, a control pulse pair according to the tripped output, and driving a driver circuit of the DC-DC converter using the control pulse pair.

The present invention provides a reconfigurable single-inductor multiport converters comprising a single inductor, a primary input port, a primary output port and a plurality of reconfigurable cells, each including a bidirectional port which is reconfigurable to be an auxiliary input port configured to share the inductor and work with the inductor to form an input cell or an auxiliary output port configured to work with a corresponding capacitor to form an output cell; and a plurality of switches arranged for facilitating the bidirectional port to act as auxiliary input port or auxiliary output port; and regulating bidirectional power flowing through the bidirectional port. The present invention provides a simple and low-cost solution for integrating multiple sources and loads simultaneously. The adoption of single-inductor design minimizes the use of magnetic components and the independent output cells configuration avoids cross-regulation problem among output ports, which simplifies the control design.

Disclosed is an AC-AC power converter with multiple AC voltage output branches. The AC-AC power converter is bridgeless and contains only one power stage. The AC-AC power converter consists of only one inductor for power conversion and provides a current source for successively feeding multiple output branches one at a time. Each output branch can be selected by the corresponding switch and its resonant circuit turns the input current source into an AC power source.

The present invention provides an adaptively modulated multi-state inverter system, comprising: a split capacitor, four bridge arms and an isolation switch group, on each of the four bridge arms a pair of complementary power switch groups is arranged; the isolation switch group comprises four fuses and six bidirectional thyristors. The output branches of the first bridge arm, the second bridge arm and the third bridge arm are respectively connected in series with a fuse to output a three-phase voltage, and at three-phase output voltage side two shared auxiliary branches are arranged, one auxiliary branch starts from the fourth bridge arm output branch on which a fuse is connected in series and is then connected to the output terminal of the three-phase voltage via three bidirectional thyristors. The other auxiliary branch starts from the DC side feed branch from the midpoint of the split capacitor, and is connected with the output terminal of the three-phase voltage via three bidirectional thyristors respectively. The invention also provides a modulating method of the multi-state inverter system. The use of the adaptive modulating technology enables the multi-state inverter to have the functions of overcurrent protection, isolation of faulty bridge arms and fault-tolerant control on any single and double bridges.

In one example, a circuit includes a voltage source, an inductive load, a capacitor, a switching unit, and a load unit. The switching unit is configured to operate in a first state and a second state. The switching unit couples the inductive load to the voltage source during the first state. The switching unit couples the inductive load to the capacitor during the second state. The load unit is configured to receive energy from the capacitor based on a comparison of a voltage of the capacitor and a reference voltage.