An isolated bidirectional converter and a method for controlling the same are provided. A primary winding or a secondary winding of a transformer module in the isolated bidirectional converter is connected in parallel with a first branch includes a first inductor and a first current sensor that arc connected in series, A current flowing through the first inductor is acquired by the first current sensor, and is proportional to a current flowing through a magnetizing inductor of the winding. Therefore, the current is controlled by modifying a duty cycle of a switch transistor on a bridge arm in the circuit, so that a. direct current component of a current flowing through the winding is modified indirectly, thereby avoiding magnetic bias on the magnetizing to inductor of the transformer module, and preventing the transformer module from being saturated.

The present embodiments relate to an inductor device, a filter device and a steering assist device. The inductor device can comprise: a core including a magnetic material; and a wire which is wound around the core and which includes a low resistance material.

This application discloses a power electronic transformer wherein each phase includes a plurality of power conversion modules. Each power conversion module includes a rectifier AC/DC circuit, a direct current bus capacitor, and a direct current-direct current DC/DC circuit. In each power conversion module, an output end of the AC/DC circuit is connected to an input end of the DC/DC circuit; the direct current bus capacitor is connected in parallel to the output end of the AC/DC circuit; and input ends of all the AC/DC circuits are connected in series, and output ends of all the DC/DC circuits are connected in parallel. The power electronic transformer includes a relatively small quantity of power conversion modules, thereby reducing occupied space and costs.

Methods for modifying converter cells for switched-mode power converters, and corresponding power converter cells. The modified converter cells exhibit reduced inductance requirements, enable use of lower voltage and smaller switches, provide improved power density and efficiency, and provide for improved input/output voltage dynamic range. Embodiments of the methods generate converter cell topologies having 3 or more node voltage levels by successively applying a “split switches and connect through a capacitor” operation. The inventive processes, or variants of those processes, may be applied to converter cell topologies that are 2-level converter cells including at least one inductance and two switches, and particularly 2-level converter cells including either (1) an order of at least 3 (i.e., 3 or more energy storage elements in some combination of inductances and capacitances, but with at least one inductance) and at least 2 switches, or (2) at least 1 designed-in inductance and at least 4 switches.

In an embodiment, a voltage comparator includes: a first switch having a conduction terminal coupled to an internal node that is coupled to an output of the voltage comparator; a current source; a capacitor; and a second switch connected in parallel with the capacitor, wherein the current source, the capacitor, and the first switch are coupled in series.

In an embodiment, a voltage comparator includes: a first switch having a conduction terminal coupled to an internal node that is coupled to an output of the voltage comparator; a current source; a capacitor; and a second switch connected in parallel with the capacitor, wherein the current source, the capacitor, and the first switch are coupled in series.

A switching power supply unit includes a pair of input terminals, a pair of output terminals, a transformer, an inverter circuit, a rectifying and smoothing circuit, and a driver. The inverter circuit includes first to fourth switching devices, a first capacitor, a resonant inductor, and a resonant capacitor. The rectifying and smoothing circuit includes a rectifying circuit including rectifying devices, and a smoothing circuit. The first to fourth switching devices are coupled in series in this order between two input terminals constituting the pair of input terminals. The first capacitor is disposed between a connection point between the first and second switching devices and a connection point between the third and fourth switching devices. The resonant inductor, the resonant capacitor, and a primary winding are coupled in series in no particular order between a connection point between the second and third switching devices and one of the two input terminals.

A DC to DC power converter device includes a controller, and a DC to DC resonant converter that includes first and second full bridge chopper circuits (FBCCs) and an LLC resonant converter coupled between the first and second FBCCs. To cause the DC to DC resonant converter to operate in a conversion mode where an input voltage received by the second FBCC is converted to an output voltage provided by the first FBCC, the controller controls switches of the second FBCC and switches of the first FBCC to transition between an ON state and an OFF state with the ON state reoccurring at a frequency lower than a resonant frequency of the DC to DC resonant converter, so that the output voltage can be higher than the input voltage.

A converter comprises: a housing including an inner space; electronic components disposed in the inner space; a first pipe disposed on the outer surface of the housing and comprising a first-first pipe and a first-second pipe arranged in parallel to and spaced apart from each other; and a second pipe coupled at both ends thereof to the first-first pipe and the first-second pipe, respectively.

Various embodiments relate to a mode detector configured to determine a mode of a circuit based upon an attached power source, including: a first latch configured to hold an first input value and output the first held value and an inverse of the first held value; a second latch configured to hold a second input value and output the second held value and an inverse of the second held value; a first output switch connected between a first power source line and a power source output of the mode detector, wherein the first output switch is configured to be controlled by the output of the first latch; a second output switch connected between a second power source line and the power source output of the mode detector, wherein the second output switch is configured to be controlled by the output of the second latch; a first AND gate with a first input and a second input connected to the inverse output of the second latch, wherein the first input is configured to receive a first power on reset signal based upon the first power source line; and a second AND gate with a first input and a second input connected to the inverse output of the first latch, wherein the first input is configured to receive a second power on reset signal based upon the second power source line, wherein the mode of the circuit is indicated by the outputs of the first latch and the second latch.