A low power consumption correction circuit for output voltage and automatic correction method

A technology of outputting voltage and correcting circuit, which is applied to the conversion device of output power, the conversion of DC power input to DC power output, electrical components, etc., can solve the problem of high static power consumption, avoid unstable current output and reduce power consumption. , the effect of large application value

Active Publication Date: 2021-03-26
SHENZHEN ICOMM SEMICON CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to solve the technical problem of reducing the high static power consumption of linear voltage converters in the prior art

Method used

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  • A low power consumption correction circuit for output voltage and automatic correction method
  • A low power consumption correction circuit for output voltage and automatic correction method
  • A low power consumption correction circuit for output voltage and automatic correction method

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Embodiment 1

[0040] see figure 1 , the present invention provides an embodiment of an output voltage correction circuit with low power consumption, including a source follower 1 and a voltage correction unit 2 connected to the source follower 1 . Specifically, the voltage calibration unit 2 includes a voltage sensing module 20 , a digital control module 21 and a reference voltage control module 22 connected in sequence. The source follower 1 is connected to the voltage sensing module 20 and the reference voltage control module 22 . It should be noted that, in order to reduce power consumption, the system-on-a-chip using the linear voltage converter will enter the sleep standby mode when not transmitting data. There will be a quiescent current during this process, resulting in a certain quiescent power consumption. Using a source follower can effectively improve this technical problem. The source follower itself does not have quiescent current, and it is easy to operate at low voltage, but...

Embodiment 2

[0050] see Image 6 , the present invention also provides an embodiment of an automatic calibration method for output voltage, including the low power consumption calibration circuit described in Embodiment 1, wherein the voltage sensing module 20 includes a first comparator 200 and a second comparator 201, and the digital The control module 21 is provided with an oscillator, and the oscillator includes a D flip-flop and a multi-element ripple transfer adder. The steps of the automatic correction method of the present embodiment are as follows;

[0051] S1. Set a standard specification voltage and a preset ratio, and calculate a first target voltage and a second target voltage based on the standard specification voltage and the preset ratio. Specifically, the standard specification voltage is determined according to the load 3 connected to the low power consumption correction circuit, and the calculation formulas of the first target voltage and the second target voltage are r...

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Abstract

The invention provides a low power consumption correction circuit and method with output voltage, relates to the technical field of electronic components, and mainly solves the technical problem of high static power consumption in a linear voltage converter. The present invention includes a source follower and a voltage correction unit connected to the source follower; the voltage correction unit includes a voltage sensing module, a digital control module and a reference voltage control module connected in sequence; the source The coupler is connected with the voltage sensing module and the reference voltage control module. The present invention adopts the source follower to replace the linear voltage converter, and the source follower will not generate static power consumption, so it can effectively reduce the power consumption of the on-chip system of the sensor; at the same time, the voltage correction unit and the voltage correction method are designed, effectively The disadvantage of unstable voltage output of the source follower is avoided. Therefore, the circuit of the present invention has low power consumption, stable output and great application value.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to an output voltage low-power correction circuit and an automatic correction method. Background technique [0002] Under the current rapid development of wireless communication technology systems, it is increasingly urgent to develop low-cost, high-efficiency, and low-power radio frequency integrated circuits. At present, the world is entering an era of the Internet of Things where various systems need to collect and exchange data. Sensors and In the Internet of Things that transmits data wirelessly, if the sensor is powered by batteries, power consumption is limited and must last for a long time, low-power, low-voltage WiFi plays a vital role. In the power structure design of the system on chip (SoC) of the above sensor, several linear voltage converters are used in the upper layer, and there are two main purposes. One is the DC voltage step-down (VIN-to-VOUT), whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156H02M1/08G01R19/25
CPCG01R19/25H02M1/082H02M3/156
Inventor 庄文贤余岱原邱伟茗
Owner SHENZHEN ICOMM SEMICON CO LTD
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