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Voltage control device

A technology of voltage control and voltage, which is applied in the direction of measuring devices, programmable logic circuit devices, control/regulation systems, etc., and can solve problems such as circuit system instability and drive ability affecting output

Active Publication Date: 2020-01-21
RICHWAVE TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally speaking, although the charge pump can provide a higher voltage, its driving capability is easily affected by the operation of the back-end load components and its output
In this case, if the electronic device wants to use the high voltage provided by the charge pump to drive components with heavy loads, it may cause the charge pump to be too late to increase the output voltage to the required range, thus further causing the instability of the overall circuit system

Method used

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Examples

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Embodiment Construction

[0045] figure 1 It is a schematic diagram of a voltage control device 100 according to an embodiment of the present invention. The voltage control device 100 includes a charge pump 110 , a driving circuit 120 and a control circuit 130 .

[0046] The charge pump 110 can increase or adjust the lower operating voltage inside the system to provide the first voltage V1. In an embodiment of the present invention, the operating voltage inside the system can be, for example, 1.2V, and the first voltage V1 provided by the charge pump 110 The target value of the voltage V1 can be, for example, 3V or −3V. For the convenience of explanation, in figure 1 In the embodiment, the target value of the first voltage V1 can be set as -3V.

[0047] The driving circuit 120 is coupled to the charge pump 110 . The driving circuit 120 can receive the first voltage V1 and the reference voltage VG, and can IN , the first voltage V1 and the reference voltage VG output the drive signal SIG OUT . ex...

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PUM

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Abstract

A voltage control device includes a charge pump, a driving circuit, and a control circuit. The charge pump provides a first voltage. The driving circuit is coupled to the charge pump, and receives thefirst voltage and a reference voltage. The driving circuit outputs a driving signal according to an input signal, the first voltage and the reference voltage. The control circuit is coupled to the charge pump and the driving circuit. Before the first voltage reaches a threshold level, the control circuit adjusts the reference voltage to increase the voltage gap between the first voltage and the reference voltage.

Description

technical field [0001] The invention relates to a voltage control device, in particular to a voltage control device capable of rapidly entering a steady state of the output voltage. Background technique [0002] In order to meet the demand for low power consumption of electronic devices, the power specifications of integrated circuits (ICs) are also redesigned to be able to operate in a low voltage environment to reduce power consumption. Although low-voltage operation can reduce power consumption, in order to complete various functions required by the electronic device, some components in the electronic device still require a higher voltage to complete the operation. For example, the switching of radio frequency signals requires higher voltages to operate. The higher voltage is often provided by a charge pump circuit. [0003] Generally speaking, although the charge pump can provide a higher voltage, its driving capability is easily affected by the operation of the back-e...

Claims

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Application Information

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IPC IPC(8): G05F1/56
CPCG05F1/561G05F3/242H02M1/08H02M1/36H02M3/07H03K5/2472H03K19/0175H03K19/017581H03K19/018571H02M1/0048Y02B70/10G05F3/24G11C5/145G01R19/16552
Inventor 陈智圣彭天云
Owner RICHWAVE TECH CORP