Power control circuit and method thereof

A power supply control circuit and control circuit technology, which is applied to battery circuit devices, circuit devices, control/regulation systems, etc., can solve problems such as the failure of the power supply control circuit to operate normally, the insufficient power supply control circuit, and the supply voltage, etc. normal functioning effect

Active Publication Date: 2020-06-02
RICHWAVE TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the operation of the device, the battery voltage of the device will gradually drop. At this time, if the control signal sent by the baseband circuit of the device is relatively large, the battery voltage of the device may not be sufficient for the power control circuit to provide a corresponding The supply voltage of the control signal makes the entire power control circuit unable to operate normally

Method used

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  • Power control circuit and method thereof
  • Power control circuit and method thereof
  • Power control circuit and method thereof

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Embodiment Construction

[0045] Various exemplary embodiments will be described more fully hereinafter with reference to the accompanying drawings, in which some exemplary embodiments are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. Throughout the drawings, like numerals indicate like components.

[0046] The power supply control circuit and method thereof provided by the present invention will be described below with multiple embodiments, however, the following embodiments are not intended to limit the present invention.

[0047] [One embodiment of the power supply control circuit]

[0048] Please refer to figure 1 , figure 1 It is a block diagram of a power control circuit according to an exe...

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Abstract

The invention provides a power control circuit for providing a supply voltage. The power control circuit includes a voltage stabilizing circuit and a signal selection circuit. The voltage stabilizing circuit is coupled to a power supply voltage and the output terminal of the power supply control circuit, and receives the first control signal to output the supply voltage according to the first control signal. The signal selection circuit has a first input terminal, a second input terminal, a third input terminal and an output terminal, wherein the first input terminal receives the first input signal, the second input terminal receives the second input signal, and the third input terminal receives Second control signal. The first input signal is related to the supply voltage. According to the second control signal, the signal selection circuit selectively outputs one of the first input signal and the second input signal from the output terminal of the signal selection circuit as the first control signal.

Description

technical field [0001] The present invention relates to a power supply control circuit and its method, in particular to a power supply control circuit and its method capable of providing a stable supply voltage according to different sizes of baseband control signals or changes in battery voltage. Background technique [0002] A portable wireless communication device is usually provided with a power control circuit to provide a corresponding supply voltage to a power amplifier for amplifying and transmitting signals according to a control signal from a baseband circuit of the device. According to different operation requirements of the device, the control signal transmitted from the baseband circuit of the device is sometimes larger and sometimes smaller. However, during the operation of the device, the battery voltage of the device will gradually drop. At this time, if the control signal sent by the baseband circuit of the device is relatively large, the battery voltage of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/56
CPCG05F1/56H02M3/156G05F1/565G05F1/575G05F1/468H02J2207/20H02M3/1566
Inventor 陈智圣王盛宗
Owner RICHWAVE TECH CORP
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