Hearing device with multiple input multiple output DC-DC converter

A hearing device configured to be worn at an ear of a user, wherein the hearing device comprises:

• an input transducer configured to capture sound and to provide a microphone input transducer signal based on the captured sound;
• a signal processing unit configured to process the input transducer signal and to provide an output signal based on the processed input transducer signal;
• an output transducer configured to provide a stimulation output signal based on the output signal;
• a battery configured to provide a battery cell voltage;
• and
• a multiple-input-multiple-output (MIMO) switched capacitor (SC) DC-DC converter coupled to the battery and comprising:
• two or more inputs, each of the two or more inputs configured to receive a voltage input, and
• two or more outputs configured to provide respective voltage outputs, the voltage outputs being different from each other, wherein at least two of the two or more outputs are capable of providing the respective voltage outputs simultaneously;
• wherein at least one of the voltage outputs is based on one of the voltage inputs;
• and
• wherein the hearing device further comprises an input power de-multiplexer having a de-multiplexer input coupled to the battery.

A hearing device configured to be worn at an ear of a user, wherein the hearing device comprises:

• an input transducer configured to capture sound and to provide a microphone input transducer signal based on the captured sound;
• a signal processing unit configured to process the input transducer signal and to provide an output signal based on the processed input transducer signal;
• an output transducer configured to provide a stimulation output signal based on the output signal;
• a battery configured to provide a battery cell voltage;
• and
• a multiple-input-multiple-output (MIMO) switched capacitor (SC) DC-DC converter coupled to the battery and comprising:
• two or more inputs, each of the two or more inputs configured to receive a voltage input, and
• two or more outputs configured to provide respective voltage outputs, the voltage outputs being different from each other, wherein at least two of the two or more outputs are capable of providing the respective voltage outputs simultaneously;
• wherein at least one of the voltage outputs is based on one of the voltage inputs;
• and
• wherein the MIMO SC DC-DC converter comprises multiple voltage stages, each of the voltage stages comprising:
• a first capacitor having an upper first capacitor terminal and a lower first capacitor terminal;
• a second capacitor having an upper second capacitor terminal and a lower second capacitor terminal;
• a first switch;
• and
• a second switch;
• and
• wherein the signal processing unit is implemented in a hearing device signal-processing chip, and wherein at least a part of the MIMO SC DC-DC converter is implemented in the hearing device signal-processing chip.