Voltage Conversion Mode Control Based on Modulation Order
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Solution Overview
Problem
Existing voltage conversion modes in electronic devices face challenges in balancing communication efficiency and current consumption, with Pulse Frequency Modulation (PFM) modes offering high efficiency but limited high-load current supply and increased noise, while Pulse Width Modulation (PWM) modes support high load currents but have low conversion efficiency and high current consumption.
Innovation Solution
An electronic device with a power management module and communication processor that identifies the modulation order for wireless communication and configures the voltage conversion mode to either PFM or PWM based on the modulation order, load current, and other factors like ultra-reliable low latency communication (URLLC) configuration, to optimize between efficiency and consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If PFM mode is used for voltage conversion, then voltage conversion efficiency is improved and current consumption is reduced, but noise increases and high load current supply is limited
Solution Approach 1:
The patent dynamically switches between PFM and PWM modes based on communication requirements. When modulation order is low (QPSK, 16QAM), PFM mode is selected for efficiency. When modulation order is high (64QAM, 256QAM) or URLLC is configured, PWM mode is selected to reduce noise and support high load currents. This dynamic adaptation resolves the contradiction by selecting the appropriate mode for each operational context.
2Object-generated harmful factors
If PWM mode is used for voltage conversion, then load current supply capability is improved and noise is reduced, but voltage conversion efficiency decreases and current consumption increases
Solution Approach 1:
The system dynamically selects PWM mode when communication requirements demand low noise performance (high modulation orders like 256QAM or URLLC configurations). When communication can tolerate more noise (lower modulation orders), the system switches to PFM mode for efficiency. This dynamic selection resolves the contradiction between noise performance and energy efficiency.
3Use of energy by moving object
If PFM mode is configured, then current consumption is reduced, but communication performance deteriorates due to noise affecting transmission rate
Solution Approach 1:
The patent implements dynamic mode switching based on modulation order detection. When high-order modulation (64QAM, 256QAM) or URLLC is configured, PWM mode is selected to ensure low noise and high transmission reliability. When low-order modulation (QPSK, 16QAM) is used, PFM mode is selected to reduce current consumption. This resolves the contradiction by adapting current consumption to communication requirements.
Data Source
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AI summary
An apparatus and a method for controlling a voltage conversion mode in an electronic device are provided. The electronic device includes a power management module, a communication processor, and at least one processor operably connected to the communication processor, wherein the at least one processor identifies a modulation order used for communication with an external device, in a case that communication with the external device is performed using a wireless resource, and configures, based on the modulation order, a voltage conversion mode of the power management module that supplies power to the communication processor to a pulse frequency modulation (PFM) mode or a pulse width modulation (PWM) mode.