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Power control method, envelope curve tracking power supply, and electronic device

A technology of tracking power supply and power control, which is applied in the field of communication and can solve the problems of low efficiency of RF PA

Active Publication Date: 2020-03-06
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Embodiments of the present invention provide a power control method, an envelope tracking power supply and electronic equipment to solve the problem of low efficiency of radio frequency PA

Method used

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  • Power control method, envelope curve tracking power supply, and electronic device
  • Power control method, envelope curve tracking power supply, and electronic device
  • Power control method, envelope curve tracking power supply, and electronic device

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] see figure 1 , figure 1 is a flow chart of a power supply control method provided by an embodiment of the present invention, and the method is applied to an envelope tracking power supply, such as figure 2 As shown, the envelope tracking power supply includes an error amplifier circuit 3, a power switch circuit 5 and a power output terminal 6, and the power switch circuit 5 is connected to the power supply output terminal 6 via an inductor L1,...

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Abstract

The invention relates to the technical field of communication, and provides a power control method, an envelope curve tracking power supply, and an electronic device. The method includes: obtaining anoutput voltage of a power switch circuit; when the output voltage of the power switch circuit is greater than a first preset voltage value, inputting a turn-off signal into the input terminal of thepower switch circuit at a target time T, wherein T = t + [delta]t, t is the time when the output voltage of the power switch circuit is greater than the first preset voltage value, and [delta]t is a preset time length; when the turn-off signal is input into the input terminal of the power switch circuit, if the output voltage of a power output terminal is less than a second preset voltage value, stopping inputting the turn-off signal into the input terminal of the power switch circuit, and inputting the output voltage of an error amplifying circuit into the input terminal of the power switch circuit. The embodiment of the present invention can improve the efficiency of radiofrequency PA.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a power supply control method, an envelope tracking power supply and electronic equipment. Background technique [0002] With the development of high-speed mobile communication, the peak-to-average ratio of radio frequency signals is getting higher and higher. In the case of a relatively high peak-to-peak value of the radio frequency signal, the radio frequency PA (Power Amplifier, power amplifier) ​​is required to have a higher power supply voltage and a higher instantaneous supply current under the same average power. But increasing the supply voltage just because of the higher peak-to-average signal portion makes the RF PA less efficient. Contents of the invention [0003] Embodiments of the present invention provide a power supply control method, an envelope tracking power supply and electronic equipment, so as to solve the problem of low efficiency of a radio frequ...

Claims

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Application Information

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IPC IPC(8): H02M1/00H04B1/04
CPCH02M1/00H04B1/04H04B2001/0408H02M1/0025
Inventor 贾晓磊谢小俭
Owner VIVO MOBILE COMM CO LTD
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