Regulated charge sharing apparatus and methods
AssigneeMovellus Circuits, Inc.
InventorsJeffrey Alan Fredenburg, Yuxiang Mu, Noman Hai
Life of this patent
Estimating the term…
Abstract
A charge sharing circuit includes a charge source having an accumulated first charge and a charge load having an accumulated second charge, where during a charge sharing interval the second charge is less than the first charge. A charge sharing regulator selectively couples between the charge source and the charge load along a charge sharing path. The charge sharing regulator regulates transfer of a shared amount of charge from the charge source to the charge load during the charge sharing interval.
Claims20
A charge sharing circuit, comprising:
- a charge source having an accumulated first charge;
- a charge load having an accumulated second charge, wherein during a charge sharing interval the second charge is less than the first charge;
- and
- a charge sharing regulator selectively coupled between the charge source and the charge load along a charge sharing path, the charge sharing regulator including a comparator to regulate transfer of a shared amount of charge from the charge source to the charge load during the charge sharing interval wherein the charge transfer is based on a difference between a bias voltage and a load voltage associated with the charge load.
A method of operation in a charge sharing circuit, comprising:
- accumulating a first charge at a charge source;
- accumulating a second charge at a charge load, wherein during a charge sharing interval the second charge is less than the first charge;
- and
- selectively coupling a charge sharing regulator between the charge source and the charge load along a charge sharing path the charge sharing regulator including a comparator;
- and
- regulating transfer of a shared amount of charge from the charge source to the charge load during the charge sharing interval wherein the charge transfer is based on a difference between a bias voltage and a load voltage associated with the charge load.
An integrated circuit (IC) chip, comprising:
- a first capacitor circuit having an accumulated first charge;
- a second capacitor circuit having an accumulated second charge, wherein during a charge sharing interval the second charge is less than the first charge;
- and
- a charge sharing regulator switchably coupled between the first capacitor circuit and the second capacitor circuit along a charge sharing path, the charge sharing regulator including a comparator to regulate transfer of a shared amount of charge between the first capacitor circuit and the second capacitor circuit during the charge sharing interval wherein the charge transfer is based on a difference between a bias voltage and a load voltage associated with the charge load.
Dependencies are inferred from the claim text.