Power Supply Circuit And Circuit Device
AssigneeSeiko Epson Corporation
InventorShinichi SEKITA
Life of this patent
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Abstract
A power supply circuit includes an amplifier including a differential pair configured with a first transistor and a second transistor, and a load section as a load of the differential pair. Further, in the power supply circuit, an input voltage is input to the gate of the first transistor, and the drain and the gate of the second transistor are coupled to each other. Further, the amplifier outputs, as an output voltage from the drain of the second transistor, a voltage obtained by offsetting a work function difference voltage between the first transistor and the second transistor by an offset voltage based on a size ratio between the first transistor and the second transistor.
Claims10
A power supply circuit comprising:
- a first amplifier including a first differential pair configured with a first transistor and a second transistor, and a first load section as a load of the first differential pair, wherein
- an input voltage is input to a gate of the first transistor, a drain and a gate of the second transistor are coupled to each other, and
- the first amplifier outputs, as a first output voltage from the drain of the second transistor, a voltage obtained by offsetting a first work function difference voltage between the first transistor and the second transistor by a first offset voltage based on a size ratio between the first transistor and the second transistor.
Dependencies are inferred from the claim text.