A charge pump unit including a capacitor that accumulates a charge on an output node according to a first clock signal and a transfer gate that takes in and applies a voltage of an input node to the output node according to a second clock signal received at a control terminal is controlled in the following manner. If the ratio of the total time of periods in which the voltage of the output node is higher than a target voltage in a predetermined monitoring period is smaller than or equal to a first threshold, i.e., if the charge pump unit executes a boosting operation for a relatively long period, a pulse voltage value of the second clock signal is increased.

In various embodiments, a measuring arrangement is provided. The measuring arrangement may include a micromechanical sensor including a capacitor, a bridge circuit including a plurality of capacitors, at least one capacitor of which is the capacitor of the micromechanical sensor, an amplifier coupled, on the input side, to an output of the bridge circuit, a DC voltage source configured to provide an electrical DC voltage, a chopper including at least one first charge store and a switch structure, The switch structure is configured to couple the first charge store alternately to the DC voltage and the bridge circuit for the purpose of coupling an electrical mixed voltage into the bridge circuit.

According to various aspects, a latch-type charge pump may include: an input node and an output node; a first charge storage and a second charge storage coupled in parallel to each other, a first switch coupled to the input node and a second switch coupled to the output node, wherein the first charge storage couples the first switch with the second switch; and a control circuit configured to control the first switch based on a state of the second charge storage, and to control the second switch based on a state of the first charge storage.

One example discloses a switching capacitive power converter, SCPC, including: an energy storage element; a voltage reference controller, and configured to output an adjusted reference voltage based on a received fixed reference voltage; and a charge pumping circuit configured to operate the SCPC at a charge pumping frequency and configured to charge the energy storage element at the charge pumping frequency if an absolute value of the power converter's output voltage is below an absolute value of the adjusted reference voltage; wherein if the charge pumping frequency is within a predetermined frequency exclusion range, the voltage reference controller is configured to set the adjusted reference voltage to a value such that the charge pumping frequency is no longer within the predetermined frequency exclusion range.

According to an embodiment there is provided a multilevel power supply comprising two power sources that share a common node, a switching arrangement, a charge storage device and an output terminal. The two power sources are configured to provide a first potential V.sub.1, a second potential V.sub.2 and a third potential V.sub.3, wherein V.sub.1>V.sub.2>V.sub.3. The switching arrangement is configured to charge the charge storage device between potentials V.sub.1 and V.sub.3 in a first switching state and to connect the charge storage device between potential V.sub.2 and the output in a second switching state.

The heating engine control circuit includes a rail converter circuit and a gate driver circuit. The rail converter circuit is configured to convert a power supply voltage into a power signal based on a vaping enable signal, the vaping enable signal being a pulse width modulated signal. The gate driver circuit includes an integrated gate driver. The integrated gate driver is configured to control application of power to a heater of the non-nicotine electronic vaping device based on the power signal, a first enable signal and a second enable signal.

A circuit includes a second voltage converter electrically coupled to a comparator and first voltage converter. The first voltage converter receives first and second clocks and an input signal at a first voltage and generates an intermediate signal at a second voltage based on the input signal and the first and second clocks. The second voltage converter receives the intermediate signal, the second clock, and a comparison signal and generates an output signal at a third voltage based on the intermediate and comparison signals and the second clock. The comparator receives a reference voltage, the output signal, and the first clock, compares the reference voltage and output signal, and generates the comparison signal based on the first clock and the comparison of the reference voltage and output signal. The second voltage converter adjusts the third voltage of the output signal to approach the reference voltage based on the comparison signal.

An electrical circuit for providing electrical power for use in powering electronic devices is described herein. The electrical circuit includes a primary power circuit and a secondary power circuit. The primary power circuit receives an alternating current (AC) input power signal from an electrical power source and generates an intermediate direct current (DC) power signal. The intermediate DC power signal is generated at a first voltage level that is less than a voltage level of the AC input power signal. The secondary power circuit receives the intermediate DC power signal from the primary power circuit and delivers an output DC power signal to an electronic device. The output DC power signal is delivered at an output voltage level that is less than the first voltage level of the intermediate DC power signal.

A charge pump circuit includes a power switch, a first pull-low circuit, an output pull-low circuit, a first charge pump stage and an output charge pump stage. The power switch receives an enabling signal. The first pull-low circuit and the output pull-low circuit receive a pull-low signal. The first charge pump stage includes a first boost capacitor used to receive a first phase signal, a first transfer transistor, a first gate-control transistor and a first storage capacitor used to receive a second phase signal. The output charge pump stage includes an output boost capacitor used to receive a third phase signal, an output transfer transistor and an output gate-control transistor. The charge pump circuit generates voltages in an erasing operation, a program operation and a read operation according to the enabling signal, the pull-low signal, the first phase signal, the second phase signal and the third phase signal.

In accordance with an embodiment, a method of operating a charge pump includes providing a first programmable voltage to a plurality of clock generators having outputs coupled to first nodes of corresponding groups of charge pump capacitors, and selecting a second node of one capacitor from one of the corresponding groups of charge pump capacitors. The clock generators produce a plurality of clock signals having amplitudes proportional to the first programmable voltage.