Power Supply Boost Circuit Efficiency Control via Feedback
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Solution Overview
Problem
Display devices face inefficiencies in power consumption and output due to variations in input voltage and current, leading to reduced performance and shorter operational times.
Innovation Solution
A power supply system incorporating a boost circuit and correction circuit that adjusts output efficiency by sensing input voltage and current, using transistors, inductors, and phase controllers to optimize voltage and current delivery to the display panel, thereby controlling the boost circuit's efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional power supply is used without correction circuit, then the circuit is simple, but output efficiency varies with input voltage changes causing efficiency hump and increased power consumption
Solution Approach 1:
The correction circuit senses the input voltage and generates a correction signal that adjusts the switching timing of the boost circuit. This feedback mechanism dynamically compensates for input voltage variations, maintaining optimal efficiency and preventing efficiency hump by continuously adapting the switching parameters based on real-time voltage conditions
Solution Approach 2:
The system transitions from a static switching configuration to a dynamic one where the switching timing is continuously adjusted based on input voltage conditions. The phase controller modifies the turning-on/off time points of the switch transistor dynamically, allowing the system to adapt to varying input voltages and maintain peak efficiency across different operating conditions
2Productivity
If the boost circuit operates without correction, then the operation is simple, but the point for achieving maximum efficiency varies (lowers) with input voltage changes
Solution Approach 1:
The correction circuit continuously monitors input voltage and adjusts the switching timing accordingly, ensuring the boost circuit operates at peak efficiency regardless of input voltage variations. This feedback control prevents the maximum efficiency point from shifting downward by dynamically compensating for voltage changes
Solution Approach 2:
The system changes the switching parameters (turning-on/off time points) based on input voltage conditions. By adjusting these parameters dynamically, the system maintains optimal efficiency across different input voltages, preventing the efficiency peak from degrading
3Duration of action of moving object
If higher current is supplied to compensate for efficiency loss, then the power consumption increases, but the operational duration decreases
Solution Approach 1:
The correction circuit ensures continuous optimal operation by preventing efficiency hump. By maintaining peak efficiency throughout the operational cycle through dynamic switching adjustment, the system maximizes the useful action duration without requiring increased power consumption to compensate for efficiency losses
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
The system enhances output efficiency, prevents efficiency humps, and reduces power consumption, allowing the display device to operate for a longer period with the same battery capacitance.
Implementation Method 1
a first boost circuit configured to output a first driving voltage with a high potential by stepping up an input voltage
Implementation Method 2
a second boost circuit configured to output a second driving voltage with a low potential by stepping down the input voltage
Implementation Method 3
A correction circuit may output a correction signal based on a result obtained by sensing the input voltage
Data Source
AI summary
A power supply includes a boost circuit having a first boost circuit configured to output a first driving voltage to be supplied to the display panel by stepping unit an input voltage and a second boost circuit configured to output a second driving voltage to be supplied to the display panel by stepping down the input voltage, and a correction circuit configured to output a correction signal based on a result obtained by sensing the input voltage, and controls output efficiency of the boost circuit based on the input voltage and current sensed from the display panel.