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Semiconductor integrated circuit

An integrated circuit and semiconductor technology, applied in the field of semiconductor integrated circuits, can solve the problems of occupying PCB board area, complex layout, high production cost, etc.

Active Publication Date: 2015-12-02
SHENZHEN SUNMOON MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a rectifier and a semiconductor integrated circuit integrated with the rectifier, aiming to solve the problems of traditional current design that the peripheral discrete components occupy the area of ​​the PCB board, the layout is complicated, and the production cost of the product is relatively high.

Method used

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  • Semiconductor integrated circuit
  • Semiconductor integrated circuit
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Embodiment Construction

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] Such as image 3 Shown is a schematic diagram of the structure of a rectifier in a semiconductor integrated circuit.

[0023] The semiconductor integrated circuit 20 provided by the implementation of the present invention (refer to Figure 5 , 6 , 7) It can be used as an LED constant current drive control chip, which includes a substrate (not shown). In addition, the P-type substrate in the rectifier provided in the embodiment of the present invention is the substrate in the semiconductor integrated circuit 20 .

[0024] The rectifier is arranged in the s...

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Abstract

The invention is suitable for the technical field of semiconductors and provides a rectifier arranged in a semiconductor integrated circuit provided with a P-type substrate. The rectifier is structurally provided with the P-type substrate, and two first P+ regions are formed on the P-type substrate. Two isolated N traps are formed on the P-type substrate in diffusion mode, and first N+ regions are respectively formed on the two N traps. P traps are respectively formed in the two N traps in diffusion mode, and at least one second P+ region is respectively formed on the two P traps. One N-type doping region is respectively filled into the two P traps, and second N+ regions are respectively formed on the two N-type doping regions. Therefore, arrangement of a peripheral circuit of the semiconductor integrated circuit integrated with the rectifier which is applied inside and is originally a discrete component can be simplified, the volume of printed circuit board (PCB) is reduced, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of semiconductors, in particular to a semiconductor integrated circuit. Background technique [0002] At present, due to the long service life, high efficiency and continuous reduction of cost of LEDs (Light Emitting Diodes, light emitting diodes), LEDs are more widely used. figure 1 It is a traditional low-power LED constant current system, which includes three parts: mains rectifier, LED light string and LED constant current drive control circuit. The LED constant current drive circuit can be placed between the rectifier bridge and the LED light string or the LED light string and between. [0003] As the world's requirements for energy saving become more and more stringent, the discrete components of the LED constant current system above occupy the PCB board area, and at the same time make the layout of the peripheral circuit more complicated, and the production cost of the product is higher, which does n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/02H01L27/04H05B33/08H05B44/00
Inventor 李照华王乐康胡乔林道明赵春波陈绪坤
Owner SHENZHEN SUNMOON MICROELECTRONICS