Nordic Semiconductor Asa

Samuli Hallikainen

Frode Milch Pedersen

Bartosz Gajda

A circuit portion comprises a DCDC converter arranged to provide current from an output of the converter to one of a plurality of loads at a time. The plurality of loads includes a low priority load and a primary load. In response to the controller detecting, while the DCDC converter is providing current to the low priority load, that the voltage across the primary load is below a first threshold, channel logic circuitry is configured to stop providing current from the output of the converter to the low priority load and to provide current from the output of the converter to the primary load. A voltage regulator provides current to the low priority load when the voltage across the low priority load is below a second threshold.

DCDC converters

A circuit portion comprises a DCDC converter that provides current to one of a plurality of loads at a time. A controller detects when a voltage across an under-supplied load of the plurality of loads is below a first threshold. Channel logic circuitry provides current from the converter to the under-supplied load in response to the controller detecting that the voltage is below the first threshold. A voltage regulator provides current to the under-supplied load when the voltage is below a second threshold.

This document describes a solution for low-power voltage regulation. According to an aspect, there is provided an apparatus comprising: a supply voltage regulator circuit configured to regulate a power supply voltage of a circuit; a comparator circuit coupled to the power supply voltage and configured to sample the power supply voltage, to compare the sampled power supply voltage with a reference voltage and, if the sampled power supply voltage is below the reference voltage, to enable the supply voltage regulator circuit to charge the power supply voltage, wherein the comparator is switched on and off in response to a clock signal; and a clock signal generator circuit configured to generate the clock signal.

DC voltage regulator for low-power device

A circuit portion comprises a DCDC converter that provides current from an output to a plurality of loads. Channel logic circuitry is configured to provide current from the output of the converter to each load according to a cyclical sequence, wherein each cycle has a duration that is divided equally into a plurality of time slots. The channel logic circuitry is configured to provide current to each load for one or more discrete time slots. The number of time slots is greater than the number of loads so that at least two output loads receive current for different numbers of time slots in a cycle.

Single-input multiple-output DCDC converters with sequential outputs

A circuit portion comprises a DCDC converter that is configured to charge and discharge an inductor according to a duty cycle to provide current to an output load. A duty module is configured to determine the duty cycle such that the DCDC converter will output a target current. A duty limiter module is configured to cause the inductor to discharge early if the determined duty cycle exceeds a threshold.

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Oulu, Finland

Samuli Hallikainen