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Starting circuit and current source with same

A start-up circuit and current source technology, applied in electrical components, output power conversion devices, etc., can solve the problem of slow start-up circuit static power consumption, etc., and achieve the effect of saving chip area, simple structure, and no static power consumption

Active Publication Date: 2015-03-25
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a startup circuit, aiming to solve the problem that the current startup circuit starts up slowly and still generates static power consumption after the electronic system works normally, and at the same time saves the chip area and reduces the cost

Method used

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  • Starting circuit and current source with same
  • Starting circuit and current source with same

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of 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.

[0015] figure 1 It is a circuit structure diagram of the start-up circuit provided by the embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown. as the picture shows:

[0016] A starting circuit 100, connected to the activated circuit module 200, the starting circuit 100 includes: PMOS transistor M1, NMOS transistor M2, NMOS transistor M5, NMOS transistor M6 and a current mirror unit; wherein, the current mirror unit is composed of PMOS transistor M3 and Composition of PMOS tube M4;

[0017] The gate, ...

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Abstract

The invention relates to the field of integrated circuit design, in particular to a starting circuit and a current source with the same. In the embodiment, the whole starting circuit only needs six MOS (metal oxide semiconductor) tubes with small area, thereby being simple in structure. Compared with other starting circuits, the starting circuit has the advantages that the area of chips is reduced, the starting circuit is high in operating reliability and can be quickly started, the conductive MOS tubes can pull a suspension potential point to low potential to switch off the starting circuit only after a current source unit is in normal operation, so that the whole starting and switch-off process is short, and nanosecond scale can be reached at the soonest, starting time can be regulated according to needs of an electronic system, and the starting circuit does not need static power consumption after the system enters a stable operation state.

Description

technical field [0001] The invention relates to the field of integrated circuit design, in particular to a starting circuit and a current source with the starting circuit. Background technique [0002] The start-up circuit is a necessary functional module to ensure the normal operation of the electronic system, and its working speed determines the start-up speed of the entire electronic system. Now that the electronic system is getting bigger and bigger, the start-up time is not only restricted by the whole system, but also affected by the running speed of the start-up circuit. The fast response of the start-up circuit greatly reduces the start-up time of the whole system. No matter how powerful an electronic system is, if the reliability of the start-up circuit is not good, then the electronic system will be difficult to work normally and cannot play its due role. [0003] Nowadays, the requirement of low power consumption has penetrated into various fields of electrical e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/36
Inventor 罗贤亮吴小晔邵彦生白骥王德闯梁理城
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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