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Dc-dc converter having device dealing with change in input voltage

A technology of DC-DC and converters, applied in the field of DC-DC converters, can solve problems such as bad pictures, and achieve the effects of enhancing work quality, enhancing line regulation rate characteristics, and enhancing line regulation rate characteristics

Inactive Publication Date: 2019-02-22
ZINITIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the input voltage to the active matrix organic light emitting diode panel is greater than the pre-designed value, it will cause poor picture

Method used

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  • Dc-dc converter having device dealing with change in input voltage
  • Dc-dc converter having device dealing with change in input voltage
  • Dc-dc converter having device dealing with change in input voltage

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Embodiment Construction

[0060]Hereinafter, description will be given with reference to the drawings to which embodiments of the present invention are attached. However, the present invention is not limited to the examples described in this specification, and can be embodied in various other embodiments. Terms used in this specification are used to help understanding of the embodiments, and are not intended to limit the scope of the present invention. In addition, the singular form used below also includes the plural form unless the opposite meaning is clearly indicated in the sentence.

[0061] The specific voltage values ​​expressed in the embodiments described below are specified for convenience of description, and it should be noted that even if the voltage values ​​are changed, the concept of the present invention will be maintained.

[0062] In this specification, for the sake of convenience, the gate voltage provided to turn off the NMOS or PMOS may be referred to as "gate off voltage".

[00...

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Abstract

Disclosed is a DC-DC boost converter comprising a boost converter comprising an NMOS and a PMOS, wherein the gate voltage of the PMOS is controlled so as to always have an off gate voltage while the NMOS periodically switches between on and off states. The DC-DC converter may comprise: a switching-type DC voltage conversion unit; a PWM waveform signal control unit for generating PWM waveform signals provided for the operation of switches comprised in the DC voltage conversion unit, wherein the duty of the PWM waveform signals is determined by a feedback voltage input to the PWM waveform signalcontrol unit; and a feedback circuit unit for generating the feedback voltage, wherein the feedback voltage is generated by deducting a value proportional to a DC input voltage, which is input to theDC voltage conversion unit, from a value proportional to an error voltage, which is proportional to the difference between a value for a DC output voltage, output by the DC voltage conversion unit, anda predetermined reference voltage.

Description

technical field [0001] The present invention relates to a DC-DC converter, in particular to the structure of a DC-DC step-up converter capable of providing a required output voltage for a high input voltage, and to correcting the output voltage by using the change value of the input voltage of the DC-DC converter Technology. Background technique [0002] In order to provide DC voltage input to the Active Matrix Organic Light Emitting Diode (AMOLED) panel, it is necessary to change the level of the DC input voltage provided by the battery or a predetermined DC power source to be suitable for the above-mentioned Active Matrix Organic Light Emitting Diode (AMOLED) panel. The DC output voltage of the bulk board, this function can be performed by a DC-DC converter. [0003] Or, in order to provide a DC output voltage input to the battery charged during wireless charging, it is necessary to change the level of the DC input voltage provided by the wireless charging device to a DC ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156
CPCH02M3/156H02M1/08H02M1/088H02M3/155G05F3/26
Inventor 金学润金柱权
Owner ZINITIX
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