Automatic amplitude-limiting adjustment circuit

A technology for adjusting circuits and limiting circuits, applied to electrical components, output power conversion devices, AC power input conversion to DC power output, etc., can solve problems such as waste

Pending Publication Date: 2020-12-08
深圳市德兴达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When limiting the output voltage, the limiting circuit itself consumes power, and for some micro-power consumption applications, it will cause waste

Method used

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  • Automatic amplitude-limiting adjustment circuit
  • Automatic amplitude-limiting adjustment circuit
  • Automatic amplitude-limiting adjustment circuit

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Embodiment Construction

[0015] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] Please refer to figure 1 , figure 2 and image 3 as shown, figure 1 It is a schematic diagram of the micro power consumption and wide dynamic automatic limiter adjustment circuit of the present invention. figure 2 It is a schematic diagram of the principle of the MOS adjustment and limiter circuit of the automatic limiter adjustment circuit of the present invention. image 3 It is a schematic diagram of the automatic limiting and dynamic response process of the present invention.

[0017] The invention proposes an automatic limiter adjustment circuit, which relates to the fields of energy collection, power supply management and microelectronic technology, such as radio frequency energy collection, solar energy collection and the like.

[0018] The automatic limiter adjustment circuit proposed by the pres...

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Abstract

The invention discloses an automatic amplitude-limiting adjustment circuit. The circuit comprises a boost circuit and an amplitude-limiting circuit, and the boost circuit and the amplitude-limiting circuit are connected in parallel between a voltage input end and a voltage output end. The boost circuit comprises a plurality of multi-stage boost modules which are connected in series, and the multi-stage boost modules are used for converting multi-stage alternating-current voltage into direct-current voltage and carrying out superposition boosting. Each stage of amplitude-limiting circuit comprises an MOS tube, the MOS tube is conducted to have a threshold voltage VTH, when the voltage between the grid electrode and the source electrode of the MOS tube is higher than the threshold voltage VTH, the MOS tube is conducted and stabilized near the VTH voltage, otherwise, the MOS tube is cut off, and the output voltage of a chip can meet the power supply requirement of a system. According to the selection of the type and the size of the MOS tube, the limitation requirement of the system on the output voltage amplitude is met.

Description

technical field [0001] The invention relates to the technical fields of power supply management and microelectronics, in particular to an automatic limiter adjustment circuit. Background technique [0002] Chips often need to limit the power supply range and reduce chip power consumption. Therefore, it is necessary to integrate a low-power voltage limiter inside the chip to ensure that the voltage is within an appropriate range. [0003] In the case of energy harvesting, the input signal is often a signal with a large fluctuation range. For example, in energy harvesting applications, the collected energy is converted into an electrical signal and input to the adjustment circuit. At this time, the output voltage of the adjustment circuit fluctuates greatly. In some precision circuits, it may exceed the load operating voltage range or exceed its own operating voltage range, which is not allowed. Therefore, it is necessary to design a voltage amplitude limiter to limit the out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/217
CPCH02M7/217H02M1/0074
Inventor 吴泽庆黄志勇
Owner 深圳市德兴达科技有限公司
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