Abstract: A DC/DC power converter comprises three or more capacitors connected in series between an output terminal and a ground terminal, the three or more capacitors being connected in series by means of two or more capacitor connection points, and an input voltage switching unit configured to connect an input terminal to one of a group of switching connection points, the group of switching connection points comprising the two or more capacitor connection points and the output terminal. With such a DC/DC power converter it is possible, for example, to convert a variable DC voltage at the input into a variable DC voltage at the output, wherein the voltage range of the output voltage is smaller than the voltage range of the input voltage.

Abstract: A DC/DC power converter comprises three or more capacitors connected in series between an output terminal and a ground terminal, the three or more capacitors being connected in series by means of two or more capacitor connection points, and an input voltage switching unit configured to connect an input terminal to one of a group of switching connection points, the group of switching connection points comprising the two or more capacitor connection points and the output terminal. With such a DC/DC power converter it is possible, for example, to convert a variable DC voltage at the input into a variable DC voltage at the output, wherein the voltage range of the output voltage is smaller than the voltage range of the input voltage.

Abstract: A DC/DC power converter comprises three or more capacitors connected in series between an output terminal and a ground terminal, the three or more capacitors being connected in series by means of two or more capacitor connection points, and an input voltage switching unit configured to connect an input terminal to one of a group of switching connection points, the group of switching connection points comprising the two or more capacitor connection points and the output terminal. With such a DC/DC power converter it is possible, for example, to convert a variable DC voltage at the input into a variable DC voltage at the output, wherein the voltage range of the output voltage is smaller than the voltage range of the input voltage.

Abstract: A DC/DC power converter has an input terminal, an output terminal, and a ground terminal. The DC/DC power converter includes two capacitors connected in series between the output terminal and the ground terminal, a boost converter having a first boost converter terminal connected to the input terminal, a second boost converter terminal connected to the output terminal, and a third boost converter terminal connected to a connection point between the capacitors, and a step-up converter having a first step-up converter terminal connected to the ground terminal, a second step-up converter terminal connected to the output terminal, and a third step-up converter terminal connected to the connection point.

Abstract: Systems and methods are described for a power amplifier with a tracking power supply. The power amplifier may use envelope tracking. The power amplifier is protected when the output of the power amplifier is short circuited or overloaded.

Abstract: A DC/DC power converter comprises three or more capacitors connected in series between an output terminal and a ground terminal, the three or more capacitors being connected in series by means of two or more capacitor connection points, and an input voltage switching unit configured to connect an input terminal to one of a group of switching connection points, the group of switching connection points comprising the two or more capacitor connection points and the output terminal. With such a DC/DC power converter it is possible, for example, to convert a variable DC voltage at the input into a variable DC voltage at the output, wherein the voltage range of the output voltage is smaller than the voltage range of the input voltage.

Abstract: A DC/DC power converter has an input terminal, an output terminal, and a ground terminal. The DC/DC power converter comprises two capacitors connected in series between the output terminal and the ground terminal, a boost converter having a first boost converter terminal connected to the input terminal, a second boost converter terminal connected to the output terminal, and a third boost converter terminal connected to a connection point between the capacitors, and a step-up converter having a first step-up converter terminal connected to the ground terminal, a second step-up converter terminal connected to the output terminal, and a third step-up converter terminal connected to the connection point.

Abstract: Systems and methods are described for a power amplifier with a tracking power supply. The power amplifier may use envelope tracking. The power amplifier is protected when the output of the power amplifier is short circuited or overloaded.

Abstract: Methods, devices, and integrated circuits are disclosed for efficiently receiving a wireless power transfer. In one example, a device configured for receiving a wireless power transfer includes an active rectifier, rectifier input nodes, and a controller. The controller is operatively coupled to the active rectifier and configured to control the active rectifier to modify the impedance at the rectifier input nodes.

Abstract: Methods, devices, and integrated circuits are disclosed for efficiently receiving a wireless power transfer. In one example, a device configured for receiving a wireless power transfer includes an active rectifier, rectifier input nodes, and a controller. The controller is operatively coupled to the active rectifier and configured to control the active rectifier to modify the impedance at the rectifier input nodes.

Abstract: Methods, devices, and integrated circuits are disclosed for efficiently receiving a wireless power transfer. In one example, a device configured for receiving a wireless power transfer includes an active rectifier, rectifier input nodes, and a controller. The controller is operatively coupled to the active rectifier and configured to control the active rectifier to modify the impedance at the rectifier input nodes.

Abstract: An embodiment of the present invention includes first and second electrical energy sources configured to supply current to an output, and a controller configured to receive a signal indicative of the current being drawn at the output, to compare the output current with a reference current level, and to regulate the voltage provided by the one of the first or second electrical energy sources such that: when the output current is lower than or equal to the reference current level, the first energy source supplies current equal to the output current; and, when the output current exceeds the reference current level, the first energy source supplies current equal to the reference current level and the second energy source supplies the remaining current required by the load.

Abstract: An embodiment of the present invention includes first and second electrical energy sources configured to supply current to an output, and a controller configured to receive a signal indicative of the current being drawn at the output, to compare the output current with a reference current level, and to regulate the voltage provided by the one of the first or second electrical energy sources such that: when the output current is lower than or equal to the reference current level, the first energy source supplies current equal to the output current; and, when the output current exceeds the reference current level, the first energy source supplies current equal to the reference current level and the second energy source supplies the remaining current required by the load.

Abstract: A high power isolated switching converter is provided, comprising a first power (11) stage and second power (12) stage connected in cascade such that the second power (12) stage is by-passed during part of a start-up mode.