An energy storage device includes at least one block, the block being connected to an input voltage V.sub.in and delivering a voltage V.sub.out greater than V.sub.in and including: n energy storage units, where n2; a charge and discharge management circuit electrically linked to the n storage units and making it possible to alternately connect all of the energy storage units of one and the same block to one another, in parallel mode or in series mode; the energy storage units respectively having an end of charge voltage V.sub.end of charge and an end of discharge voltage V.sub.end of discharge; the block having a defined block voltage V.sub.Block between the low potential of the first energy storage unit and the high potential of the nth energy storage unit, wherein the charge and discharge management circuit includes: first means for triggering the toggling from the parallel mode to the series mode, through the exceedance of a first threshold voltage (V.sub.threshold1) in one of the energy storage units, the first threshold voltage corresponding to a target end of charge voltage of the storage unit; second means for triggering the toggling from the series mode to the parallel mode, by the voltage V.sub.Block crossing below a second threshold voltage (V.sub.threshold2), the second threshold voltage corresponding to a voltage equal to the sum of the n end of discharge voltages of the n energy storage units; the first means and the second means comprising a comparator block.

An apparatus includes an isolated power converter having an input connected to an input dc power source, a first output and a second output, and a non-isolated power converter having an input connected to the second output of the isolated power converter, wherein the first output of the isolated power converter and an output of the non-isolated power converter are connected in series.

An apparatus includes an isolated power converter having an input connected to an input dc power source, a first output and a second output, and a non-isolated power converter having an input connected to the second output of the isolated power converter, wherein the first output of the isolated power converter and an output of the non-isolated power converter are connected in series.

A multi-level switching converter and a method which converts an input voltage provided at an input node to an output voltage provided at an output node is described. The multi-level switching converter has a first converter branch with a first set of switches and a first flying capacitor, and a second converter branch with a second set of switches and a second flying capacitor. Furthermore, the switching converter has a joint inductor for the first and second converter branch, and control circuitry. The control circuitry controls the first and second set of switches to set the output voltage in accordance to a reference voltage, and by doing so it provides a robust regulation of the capacitor voltages across the first and second flying capacitors.

A multi-level switching converter and a method which converts an input voltage provided at an input node to an output voltage provided at an output node is described. The multi-level switching converter has a first converter branch with a first set of switches and a first flying capacitor, and a second converter branch with a second set of switches and a second flying capacitor. Furthermore, the switching converter has a joint inductor for the first and second converter branch, and control circuitry. The control circuitry controls the first and second set of switches to set the output voltage in accordance to a reference voltage, and by doing so it provides a robust regulation of the capacitor voltages across the first and second flying capacitors.

A charge pump method and apparatus is described having various aspects. Noise injection from a charge pump to other circuits may be reduced by limiting both positive and negative clock transition rates, as well as by limiting drive currents within clock generator driver circuits, and also by increasing a control node AC impedance of certain transfer capacitor coupling switches. A single-phase clock may be used to control as many as all active switches within a charge pump, and capacitive coupling may simplify biasing and timing for clock signals controlling transfer capacitor coupling switches. Any combination of such aspects of the method or apparatus may be employed to quiet and/or simplify charge pump designs over a wide range of charge pump architectures.

The present disclosure relates to a head-wearable hearing device which comprises a magnetic inductance antenna having a predetermined resonance period for receipt of wireless data signals and a switched capacitor DC-DC converter configured for converting a DC input voltage into a higher or lower DC output voltage in accordance with a clock signal. The charge pump circuit is configured to charge an output capacitor by output current pulses where the output current pulses at least comprise first and second consecutive output current pulses having a mutual pulse delay corresponding to substantially one-half of the predetermined resonance period of the magnetic inductance antenna.

The present disclosure relates to a head-wearable hearing device which comprises a magnetic inductance antenna having a predetermined resonance period for receipt of wireless data signals and a switched capacitor DC-DC converter configured for converting a DC input voltage into a higher or lower DC output voltage in accordance with a clock signal. The charge pump circuit is configured to charge an output capacitor by output current pulses where the output current pulses at least comprise first and second consecutive output current pulses having a mutual pulse delay corresponding to substantially one-half of the predetermined resonance period of the magnetic inductance antenna.

Present invention is an apparatus and method for power conversion charge pumps that uses cross-coupling capacitors. High efficiency power converter charge pump for both divide by 3 (1/3), divide by 3/2 (2/3) are explicitly discussed. The power conversion charge pumps utilizing cross coupled capacitors may provide up to 40% reduction in a number of switches required for a charge pump implementation, thus reducing design area cost while also resulting in high-efficiency performance.

Present invention is an apparatus and method for power conversion charge pumps that uses cross-coupling capacitors. High efficiency power converter charge pump for both divide by 3 (1/3), divide by 3/2 (2/3) are explicitly discussed. The power conversion charge pumps utilizing cross coupled capacitors may provide up to 40% reduction in a number of switches required for a charge pump implementation, thus reducing design area cost while also resulting in high-efficiency performance.