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Crystal oscillator power supply method and apparatus, and electronic device

A technology of crystal oscillator and power supply method, applied in power oscillators, electrical components, etc., can solve the problems of increasing power consumption and accelerating the start-up speed of crystal oscillators

Pending Publication Date: 2018-02-16
NATIONZ TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a crystal oscillator power supply method, device and electronic equipment to solve the problem of increased power consumption existing in the existing method of increasing the size of the amplifier tube in the crystal oscillator to accelerate the crystal oscillator start-up speed

Method used

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  • Crystal oscillator power supply method and apparatus, and electronic device
  • Crystal oscillator power supply method and apparatus, and electronic device
  • Crystal oscillator power supply method and apparatus, and electronic device

Examples

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Embodiment 1

[0037] figure 1 For the flow chart of the crystal oscillator power supply method provided in Embodiment 1 of the present invention, please refer to figure 1 , the crystal oscillator power supply method provided in this embodiment includes the following steps:

[0038] S101: monitor the signal output state of the crystal oscillator;

[0039] S102: Call the terminal power supply voltage or the regulated power supply voltage to power the crystal oscillator according to the signal output state, and the regulated power supply voltage is lower than the terminal power supply voltage.

[0040] In some embodiments, step S102 includes:

[0041] When the signal output state is that the crystal oscillator has no output signal, use the terminal power supply voltage to power the crystal oscillator;

[0042] When the signal output state is the normal output signal of the crystal oscillator, use the regulated power supply voltage to power the crystal oscillator.

[0043] In some embodimen...

Embodiment 2

[0049] figure 2 For the structural diagram of the crystal oscillator power supply device provided in Embodiment 2 of the present invention, please refer to figure 2 , the crystal oscillator power supply device 2 provided in this embodiment includes:

[0050] The detection module 21 is used to monitor the signal output state of the crystal oscillator;

[0051] The power supply module 22 is configured to call the terminal power supply voltage or the regulated power supply voltage to power the crystal oscillator according to the signal output state, and the regulated power supply voltage is lower than the terminal power supply voltage.

[0052]In some embodiments, the power supply module 22 is specifically used to: when the signal output state is that the crystal oscillator has no output signal, use the terminal power supply voltage to supply power to the crystal oscillator; when the signal output state is that the crystal oscillator normally outputs a signal, use A regulated...

Embodiment 3

[0056] image 3 For the schematic structural diagram of the electronic device provided in Embodiment 3 of the present invention, please refer to image 3 The electronic device 3 provided in this embodiment includes: a crystal oscillator 31 for outputting an oscillating signal, and a crystal oscillator power supply device 32 for supplying power to the crystal oscillator, wherein the crystal oscillator power supply circuit 32 includes:

[0057] The detection circuit 321 is used to monitor the signal output state of the crystal oscillator, and output a level signal corresponding to the signal output state;

[0058] The power supply circuit 322 is used to call the terminal power supply voltage or the regulated power supply voltage to power the crystal oscillator according to the level signal, and the regulated power supply voltage is lower than the terminal power supply voltage.

[0059] In some embodiments, the power supply circuit 322 is specifically used to: when the level sig...

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PUM

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Abstract

The invention provides a crystal oscillator power supply method and apparatus, and an electronic device. The method comprises the following steps: monitoring a signal output state of a crystal oscillator, calling a terminal supply voltage or a voltage stabilization supply voltage to supply power for the crystal oscillator according to the signal output state, wherein the voltage stabilization supply voltage is smaller than the terminal supply voltage, when the crystal oscillator needs to be started, supplying power to the crystal oscillator by the larger terminal supply voltage by switching the supply voltage of the crystal oscillator so as to increase the oscillation starting speed, after the crystal oscillator outputs a normal oscillation signal, supplying power to the crystal oscillatorby the smaller terminal supply voltage so as to reduce the power consumption. By adoption of the method, the oscillation starting can be accelerated without increasing the size of an amplification tube in the crystal oscillator, and the problem of increased power consumption in the existing manner of accelerating the oscillation starting speed of the crystal oscillator by increasing the size of the amplification tube in the crystal oscillator is solved.

Description

technical field [0001] The invention relates to the field of crystal oscillator startup, in particular to a crystal oscillator power supply method, device and electronic equipment. Background technique [0002] Crystal oscillators have high frequency stability and excellent phase noise performance, and are widely used in various portable electronic devices. In order to save power consumption, when the device is not enabled, it is usually in sleep mode, and it is switched from sleep mode to working mode when the device is enabled. The mode switching speed of electronic devices depends on the start-up time of the crystal oscillator, so fast start-up crystal oscillation tor can improve the switching efficiency. [0003] In order to accelerate the start-up of the crystal oscillator, the prior art mainly has the following methods: the size of the amplifier tube in the crystal oscillator is made very large. At this time, the loop gain is very high, and the oscillation can be star...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/04
CPCH03B5/04
Inventor 刘宝生赵辉冯立松
Owner NATIONZ TECH INC
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