SEMICONDUCTOR DEVICE
First Claim
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1. A semiconductor device comprising:
- a substrate having a first conductivity type;
an epitaxial layer having a second conductivity type and disposed on the substrate;
a first sinker having the second conductivity type, disposed in the epitaxial layer, extending from the substrate to an upper surface of the epitaxial layer, and partitioning the epitaxial layer into a first region and a second region;
a transistor disposed in the first region, wherein a drain of the transistor is electrically coupled to a first rail, and a source of the transistor is electrically coupled to a second rail; and
a diode unit disposed in the second region and electrically coupled to the first rail.
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Abstract
A semiconductor device including a substrate, an epitaxial layer, a first sinker, a transistor, a diode unit, a first buried layer, and a second buried layer is provided. When the semiconductor device is operated at the high voltage, the highly large substrate current due to the external load is avoided through the diode unit disposed in the semiconductor device of an embodiment consistent with the invention. Furthermore, according to the design of the semiconductor device, the issue of the narrow input voltage range is improved, and interference of the semiconductor device with the other semiconductor devices is prevented.
22 Citations
12 Claims
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1. A semiconductor device comprising:
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a substrate having a first conductivity type; an epitaxial layer having a second conductivity type and disposed on the substrate; a first sinker having the second conductivity type, disposed in the epitaxial layer, extending from the substrate to an upper surface of the epitaxial layer, and partitioning the epitaxial layer into a first region and a second region; a transistor disposed in the first region, wherein a drain of the transistor is electrically coupled to a first rail, and a source of the transistor is electrically coupled to a second rail; and a diode unit disposed in the second region and electrically coupled to the first rail. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification