Power supply circuit
AssigneeSeiko Epson Corporation
InventorTakashi Fujise
Life of this patent
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Abstract
A power supply circuit is equipped with a first amplification path 10 in which a first potential is input and that supplies current to an output terminal when a control signal is in a first state; a second amplification path 20 in which a second potential is input and that absorbs current from the output terminal when a control signal is in a second state; an intermediate potential forming circuit that forms a third potential between the first potential and the second potential; and a comparison circuit 30 that compares the third potential with a potential at the output terminal to form a control signal and supplies the same to the first and second amplification paths.
Claims21
A power supply circuit comprising:
- a first amplification path in which a first potential is input and that supplies a current to an output terminal when a control signal is in a first state;
- a second amplification path in which a second potential is input and that absorbs current from the output terminal when a control signal is in a second state;
- an intermediate potential forming circuit that forms a third potential between the first potential and the second potential;
- and
- a comparison circuit that compares the third potential and a potential at the output terminal to form a control signal and supplies the control signal to the first and second amplification paths.
A power supply circuit comprising:
- a first amplification path coupled to a first potential source and an output terminal;
- a second amplification path coupled to a second potential source and the output terminal;
- a comparator circuit including:
- an inversion input coupled to a third potential source, the third potential source being between the first and second potential sources;
- a non-inversion input coupled to the output terminal;
- and
- a control output coupled to the first and second amplification paths.
A power supply circuit comprising:
- a first amplification path coupled to a first potential source and an output terminal;
- a second amplification path coupled to a second potential source and the output terminal;
- a comparator circuit including:
- a non-inversion input coupled to a third potential source, the third potential source being between the first and second potential sources;
- an inversion input coupled to the output terminal;
- and
- a control output coupled to the first and second amplification paths.
Dependencies are inferred from the claim text.