PA Power Supply Circuit With Dynamic Voltage Control
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Solution Overview
Problem
The power consumption of terminals supporting wireless data services is high due to inefficient power amplifiers, which have constant power supply voltage regardless of changing network states, leading to low efficiency and increased power consumption.
Innovation Solution
A power supply circuit for power amplifiers that includes a DC/DC switch power chip with a control circuit to adjust the voltage input based on actual requirements, using a control voltage that changes according to the power level and operating frequency of the power amplifier, allowing the voltage to be optimized for improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the power supply voltage of the PA is kept constant, then the circuit design is simple, but the efficiency of the PA is low and power consumption is high
Solution Approach 1:
The patent applies dynamics by making the power supply voltage adjustable rather than fixed. The control circuit dynamically adjusts the power supply voltage to the PA based on actual requirements, allowing the system to adapt to different operating conditions and improve efficiency while managing power consumption effectively.
Solution Approach 2:
The patent changes the parameter of power supply voltage from a constant value to a variable parameter. By adjusting the power supply voltage according to different operating modes and power requirements, the system optimizes PA efficiency and reduces unnecessary power consumption while maintaining simple circuit design.
2Loss of energy
If the power supply voltage of the PA is reduced to match lower output power requirements, then the efficiency of the PA improves, but the power supply circuit becomes more complex
Solution Approach 1:
The patent changes the power supply voltage parameter dynamically based on output power requirements. When output power is reduced, the power supply voltage is相应 reduced, improving PA efficiency and reducing power loss. This parameter adjustment is achieved through a control circuit that manages the trade-off between efficiency and complexity.
3Productivity
If the power supply voltage is adjusted according to network state changes, then the efficiency of the PA improves, but the control complexity increases
Solution Approach 1:
The patent implements feedback control where the power supply voltage is adjusted based on feedback about the actual operating conditions and power requirements. The control circuit monitors the system state and dynamically adjusts the power supply voltage to optimize PA efficiency, managing control complexity through intelligent feedback mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution improves the efficiency of the power amplifier by adjusting the voltage input to match the required power level and frequency, reducing power loss and consumption in the terminal.
Implementation Method 1
U1 is a direct current/direct current converter chip (that is, a DC/DC switch power chip)... V IN is a working power supply... V OUT is a power supply voltage of the PA
Data Source
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AI summary
Embodiments of the present invention a power supply circuit of a power amplifier and disclose a terminal, relating to the communication field, to improve the efficiency of the power amplifier in the terminal and then reduce power consumption of the terminal. The power supply circuit of the power amplifier includes a direct current/direct current converter chip, where the direct current/direct current converter chip includes an input pin, an inductance pin, and a feedback pin, and the input pin is connected to a power supply and the inductance pin is connected to a voltage input end of the power amplifier through an LC storage circuit. A control circuit is connected between the voltage input end of the power amplifier and the feedback pin; the control circuit includes a control voltage, where the control voltage adjusts the voltage at the voltage input end of the power amplifier through the control circuit and the control voltage is variable. The terminal includes the power supply circuit of the power amplifier. The technical solutions provided in the embodiments of the present invention are applicable to any terminal using a power amplifier to amplify radio frequency signals.