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Power source output signal adjusting method, power input signal adjusting method, charger and terminal

A technology of power output and adjustment method, which is applied in the field of communication, can solve the problems that the ripple jitter cannot be effectively suppressed, and achieve the effect of suppressing the ripple jitter

Active Publication Date: 2020-01-24
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a power supply output signal, a power supply input signal adjustment method, a charger and a terminal, so as to at least solve the problem that the ripple jitter cannot be effectively suppressed in the related art

Method used

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  • Power source output signal adjusting method, power input signal adjusting method, charger and terminal
  • Power source output signal adjusting method, power input signal adjusting method, charger and terminal
  • Power source output signal adjusting method, power input signal adjusting method, charger and terminal

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Embodiment 1

[0038] Usually, the method of suppressing ripple is to place a filter capacitor at the output end of the power conversion circuit, and place a decoupling capacitor at the input end; or use a magnetic bead that presents high impedance to a certain frequency signal to suppress ripple; or set a filter circuit at the output end, Or isolate the ground loop between the input and output of the filter circuit to avoid mixing the input noise ripple into the output. The suppression of ripple by magnetic beads can only work against the ripple of a certain frequency of the power supply. In fact, the ripple frequency range of the power supply has a large span, from tens of Hz to hundreds of MHz. With such a wide range of ripple frequencies, there is currently no suitable bead that can present a high impedance state in such a wide range. Therefore, the magnetic beads cannot completely suppress the ripple, and can only suppress the ripple at a certain frequency at the power input end of some...

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Abstract

The invention provides a power source output signal adjusting method, a power input signal adjusting method, a charger and a terminal. The power source output signal adjusting method comprises the following steps that: first ripple signals are collected from the first power source output signals of an output power source; target operation is performed on the first ripple signals, so that second ripple signals can be obtained, wherein the target operation includes an inverting operation; and the second ripple signals and the first power source output signals are superposed, second power sourceoutput signals are obtained, the amplitude of ripple signals in the second power source output signals is smaller than the amplitude of the first ripple signals. Therefore, with the power source output signal adjusting method, the power input signal adjusting method, the charger and the terminal, the problem that ripple jitter cannot be effectively suppressed in the prior art can be solved, and ripple jitter can be effectively suppressed.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a power output signal, a method for adjusting a power input signal, a charger and a terminal. Background technique [0002] In the field of communication, for terminal products such as mobile phones, fast charging has become a basic function. At present, pulse charging is an implementation method of low-voltage and high-current fast charging methods for mobile phones. However, this method will generate large ripples in the change of the output voltage due to the switching action brought by the pulse method at the charger end. Ripple is a phenomenon of voltage fluctuation. In the pulse fast charging method, due to the larger charging current, the energy storage components experience high-speed and wide-range voltage changes, resulting in a large output voltage ripple of the charger. [0003] Usually, the method of suppressing ripple is to place a filter capacitor at the output...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0029H02J7/007H02J7/00Y02T10/70
Inventor 龚勇
Owner ZTE CORP
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