Voltage adjustment device and voltage generating system

A technology of voltage regulation and output voltage, applied in control/regulation systems, regulating electrical variables, instruments, etc., can solve problems such as power supply efficiency drop, burning of electrical equipment, and normal transmission of interference signals.

Active Publication Date: 2015-10-07
GIGADEVICE SEMICON (BEIJING) INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The power supply can provide indispensable energy for electronic products, but in addition to providing energy, it also brings ripples, noise and other effects to the normal operation of electronic products
[0003] Generally, the DC voltage output by the power supply used in electronic products is a stable value, which is obtained by rectifying and filtering the AC voltage. Because the filtering is not clean, the DC voltage contains AC components, which leads to the generation of ripples.
[0004] Larger ripples may cause harmonics, modulation, etc. in electronic products and interfere with normal work. The normal operation of electronic products will lead to a decrease in the efficiency of power supply, interfere with the normal transmission of signals, and strong ripples will generate surge voltage or current, which may burn out electrical equipment

Method used

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  • Voltage adjustment device and voltage generating system
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  • Voltage adjustment device and voltage generating system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to figure 1 , shows a schematic structural diagram of a voltage regulating device provided in Embodiment 1 of the present invention, which may specifically include: a unit current supply module 101, a first current supply module 102, a second current supply module 103, and a first current generation module 104 , the second current generation module 105 and the switch 106;

[0038] Wherein, the first current generating module 104 may specifically include: a first preset number of first N-tube current mirrors 141, and the second current generating module 105 may specifically include: a second preset number of second N-tube current mirrors 141 A current mirror 151, and the source of the first N-tube current mirror 141 is connected to the ground, and the drain of the second N-tube current mirror 151 is connected to the output terminal of the adjusted voltage;

[0039] The unit current supply module 101 can provide a unit current for the gates of the first N-tube curr...

Embodiment 2

[0049] refer to figure 2 , showing a schematic structural diagram of a voltage regulating device provided in Embodiment 2 of the present invention;

[0050] The voltage regulating device of the embodiment of the present invention can effectively reduce the ripple generated by the output voltage in the circuit, thereby avoiding the influence of the ripple on the circuit components and improving the use efficiency of the power supply.

[0051] The voltage regulating device in the embodiment of the present invention may specifically include: a unit current supply module, a first current supply module, a second current supply module, a first current generation module, a second current generation module, and a switch;

[0052] Wherein, the first current generating module may specifically include: an eighth N-tube current mirror M8 and a ninth N-tube current mirror M9, and the second current generating module may specifically include: a tenth N-tube current mirror M10 and a tenth N...

Embodiment 3

[0065] refer to image 3 , which shows a schematic structural diagram of a voltage generation system provided by Embodiment 3 of the present invention, which may specifically include:

[0066] A voltage regulating device 301, configured to generate a regulating voltage according to an enabling signal;

[0067] an output voltage generator 302, configured to use an emitter follower to generate an output voltage corresponding to the regulated voltage;

[0068] A voltage divider 303, configured to generate a divided voltage of the output voltage by using a voltage dividing network;

[0069] A comparator 304, configured to compare the divided voltage of the output voltage with a reference voltage to obtain a corresponding comparison result, and use the comparison result as the enable signal;

[0070] In the voltage generating system in the embodiment of the present invention, the voltage regulating device 301 uses the enable signal to generate a regulated voltage, and transmits t...

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Abstract

The embodiment of the invention provides a voltage adjustment device and a voltage adjustment system. The voltage adjustment device comprises a unit current providing module, a first current providing module, a second current providing module, a first current generating module, a second current generating module and a switch. The first current providing module and the second current providing module are used for providing first currents and second currents for drains of first N tube current mirrors and drains of second N tube current mirrors respectively. The switch is used for adjusting the switching state of the switch according to an enable signal. The third preset number of the second N tube current mirrors connected with the switch is smaller than the second preset number of the second N tube current mirrors connected with the switch, and the second N tube current mirrors which are not connected with the switch are grounded through sources. The second preset number is larger than the first preset number, and the difference between the second preset number and the third preset number is smaller than the first preset number. By means of the voltage adjustment device and the voltage adjustment system, ripple waves generated by the output voltage can be effectively controlled so that influences of the ripple waves on electronic products can be reduced.

Description

technical field [0001] The embodiments of the present invention relate to the field of electronic circuits, in particular to a voltage regulating device and a voltage generating system. Background technique [0002] The power supply can provide indispensable energy for electronic products, but in addition to providing energy, it also brings ripple and noise to the normal operation of electronic products. [0003] Generally, the DC voltage output by the power supply used in electronic products is a stable value, which is obtained by rectifying and filtering the AC voltage. Because the filtering is not clean, the DC voltage contains AC components, which leads to the generation of ripples. [0004] Larger ripples may cause harmonics, modulation, etc. in electronic products and interfere with normal work. The normal operation of electronic products is affected, resulting in a decrease in the efficiency of power supply, interfering with the normal transmission of signals, and st...

Claims

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Application Information

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IPC IPC(8): G05F1/56
Inventor张现聚程莹
OwnerGIGADEVICE SEMICON (BEIJING) INC