Abstract: A buck-boost power converter is operable in a first mode (step-down) or in a second mode (step-up). The power converter has an inductor, a flying capacitor, a network of six switches and a driver adapted to drive the network of switches with a sequence of states. Depending on the mode of operation the sequence of states comprises at least one of a first state and a second state. In the first state the ground port is coupled to the second port via two paths, a first path comprising the flying capacitor and the inductor, and a second path comprising the flying capacitor while bypassing the inductor. In the second state the first port is coupled to the second port via a path that includes the inductor and the ground port is coupled to the first port via a path that includes the flying capacitor while bypassing the inductor.

Abstract: A pulse density modulator encodes an electrical parameter of an external element into a data stream signal. The electrical parameter has a property which causes a predetermined error in the data stream signal. The pulse density modulator includes a digital to analog converter having a sensor element connectable to the external element, and an adjuster circuit adapted to adjust an output of the digital to analog converter based on the data stream signal to correct the predetermined error in the data stream signal. A corresponding method of correcting a data stream signal of a pulse density modulator is also presented.

Abstract: The present document describes a control circuit for controlling a buck-boost power converter, which is configured to provide at an output node of the power converter an output current at an output voltage based on electrical power at an input voltage which is provided at an input node of the power converter. The control circuit is configured to determine an operation mode that the power converter is operated in; to determine an error voltage signal based on the output voltage, based on a reference voltage for the output voltage and based on the determined operation mode of the power converter; and to determine a control signal for controlling one or more power switches of the power converter in dependence of the error voltage signal.

Abstract: A power converter which has a reservoir capacitor, a first flying capacitor, and first and second inductors coupled to a network of switches is presented. A driver is adapted to drive the network of switches with a sequence of states during a drive period. The power converter is operable in a first mode to deliver an output current using both the first and second inductors and a second mode to deliver the output current using the first inductor and without using the second inductor. When a load current is above a threshold value, the driver drives the network of switches in a first sequence of states to operate the power converter in the first mode. When the load current is equal or below the threshold value, the driver drives the network of switches in a second sequence of states to operate the power converter in the second mode.

Abstract: A power converter including an inductor, a first power switch, a second power switch, a third power switch, a fourth power switch, a sixth power switch, a first flying capacitor, a third flying capacitor, a seventh power switch, an eighth power switch, a ninth power switch, a tenth power switch, a twelfth power switch, a second flying capacitor, and a fourth flying capacitor.

Abstract: A power converter and a corresponding method of converting power are presented. The power converter includes a ground port, an input port for receiving an input voltage and an output port for providing an output voltage; an inductor; a flying capacitor; a network of switches; and a driver to drive the network of switches with a sequence of states during a drive period. The sequence of states includes a first state and a second state. In the first state one of the input port and the output port is coupled to the ground port via a first path comprising the inductor. In the second state the remaining state among the input port and the output port is coupled to the ground port via a second path and a third path, the second path comprising the flying capacitor and bypassing the inductor, and the third path comprising the inductor.

Abstract: A computer-implemented method of monitoring a first signal with respect to a plurality of threshold values within a simulation of an electronic circuit, the method comprising providing a first threshold value, monitoring the first signal with respect to the first threshold value, detecting that the first signal has reached or has traversed across the first threshold value, and generating a second threshold value in response to the detection of the first signal having reached or having traversed across the first threshold value.

Abstract: A ripple reduction circuit for use with an AC/DC power supply providing an output voltage to a load is presented. The ripple reduction circuit includes an input terminal for receiving the output voltage and a low pass filter. The low pass filter is used to filter an AC component of the output voltage to obtain a filtered DC voltage. The ripple reduction circuit generates a reference current based on the filtered DC voltage and a control voltage having an AC component in phase with the AC component of the output voltage.