In an example, a system includes a differential amplifier having a first input terminal and a second input terminal, the differential amplifier configured to be coupled to a boost diode of a boost converter. The system also includes an input diode coupled to the first input terminal and the second input terminal. The system includes a pull-up circuit coupled to the input diode and configured to be coupled to the boost diode. The system also includes a pull-down circuit coupled to the pull-up circuit. The system includes a transistor coupled to the pull-up circuit and the pull-down circuit.

A clocked buck-boost converter includes two switch elements and an inductor and via which an input voltage is converted into a regulated output voltage, wherein a first switch element or buck converter switch element is clocked using a first control signal, and a second switch element or boost converter switch element is clocked using a second control signal, where the first and second control signals are derived from a regulator manipulated variable from a regulating unit, first and second manipulated variables are generated for the first and second control signals, the regulator manipulated variable is amplified, an offset value is derived, and the two manipulated variables are then compared with a sawtooth signal and the two switch elements of the buck-boost converter are actuated or clocked in a corresponding manner to generate the first or second control signal.

A power convertor configured to output power to an electrofusion welding coupler for performing electrofusion welding. The power convertor comprises an array of connected DC to DC power convertor circuits. In use, the array of connected DC to DC power convertor circuits is configured to receive, at a first interface, power at a first voltage level from a battery and output power, at a second interface, at a second voltage level to provide power to electrofusion welding cable means. The DC to DC power convertors are arranged in a buck-boost configuration which can operate in a boost mode in which the first voltage level is less than the second voltage level and in a buck mode in which the first voltage level is greater than the second voltage level.

The invention refers to a plug-in module for charging of batteries in an electronic device, comprising a pad-element configured to receive wireless input of electromagnetic energy; a chassis connected with the pad-element and provided with a plug connector which is configured to be plugged in a charging socket of the electronic device wherein the chassis comprises integrated energy transmission channels and a circuit board configured to transfer and convert the electromagnetic energy from the pad-element into a charging current provided at the plug connector.

A single inductor multiple output DC-to-DC converter may be configured as a buck-boost converter. The converter may include an inductor, a plurality of switches coupled to the inductor to control energizing and deenergizing phases of the inductor, and a plurality of output rails. Each of the plurality of output rails may include at least one switch, which is configured to connect the output rail to the inductor of the buck-boost converter. Depending on the energizing and deenergizing patterns of the inductor, and the state of the one or more switches, the various output rails may be supplied with a plurality of different output voltages and / or output currents. Any of a plurality of regulating strategies may be utilized to further control the output voltages and / or the output currents.

A multi-level converter comprises one or more flying capacitors configured to operate at balanced voltages. The multi-level converter comprises a plurality of switching groups comprising pairs of switches operable to transfer energy to and from an inductor and the one or more flying capacitors for inverting an input voltage to an inverted output voltage. The multi-level converter comprises the inductor configured to operate according to an inductor frequency greater than a switching frequency used to control the plurality of switching groups.

A buck-boost switching regulator includes: a power switch circuit including an input switch unit and an output switch unit; a bypass control circuit configured to operably generate a bypass control signal according to a conversion voltage difference between an input voltage of an input power and an output voltage of an output power and according to whether an inductor current flowing through an inductor reaches an output current of the output power; and a bypass switch circuit, wherein when the conversion voltage difference is below a reference voltage and when the inductor current flowing through the inductor reaches the output current, the bypass control signal controls the bypass switch circuit to electrically connect the input power with the output power, so that the buck-boost switching regulator operates in a bypass mode.

Provided are a switching regulator and a power management unit including the switching regulator. A switching regulator configured to transform an input voltage and generate an output voltage includes a first regulating circuit configured to regulate the input voltage and to generate a first voltage based on a first switching signal set having a first duty ratio, and a second regulating circuit configured to regulate the first voltage and to generate the output voltage based on a second switching signal set having a second duty ratio. The switching regulator determines a voltage gain based on the first duty ratio and the second duty ratio, the voltage gain corresponding to a ratio of the output voltage to the input voltage.

A power supply control device controls power supply through two branch paths branched from a common power supply path. Two N-channel FETs are respectively disposed in the two branch paths. A booster circuit outputs a voltage from a common output end, and applies a voltage to gates of the two FETs through a circuit resistor. Two charge resistors are respectively disposed in two applying paths through which a voltage is applied from the output end of the booster circuit to the gates of the two FETs. Each of two diodes are respectively connected between both ends of each of the two charge resistors. Cathodes of the two diodes are disposed on the side of the booster circuit.

Disclosed is an electronic device, which includes a direct voltage to direct voltage converter, and a controller that receives first current information, second current information, an input voltage, and a feedback voltage from the direct voltage to direct voltage converter, controls the direct voltage to direct voltage converter based on the input voltage in one of a first mode, a second mode, or a third mode, controls the direct voltage to direct voltage converter based on the first current information and an output voltage such that buck conversion is performed in the first mode and the second mode, and controls the direct voltage to direct voltage converter based on the second current information and the output voltage such that boost conversion is performed in the second mode and the third mode.