Dual Power Management Chips for High-Load Display Driving
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Solution Overview
Problem
As display technology advances with higher refresh rates, resolutions, and screen sizes, the power consumption required for normal display operation increases, which existing power management systems struggle to efficiently manage.
Innovation Solution
A power supply circuit is introduced, comprising a first and second power management chip connected to a display panel, providing different driving signals, and optionally including a timing controller and control circuit to manage and program these chips effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a single power management chip is used, then the device complexity is low, but it cannot provide sufficient power for high refresh rate, high resolution, or large size displays
Solution Approach 1:
The power management function is divided into multiple independent power management chips (first power management chip and second power management chip), each capable of being independently programmed and controlled. This segmentation allows the system to distribute power management tasks across multiple chips, enabling sufficient power delivery for high-performance displays while maintaining manageable complexity through modular design
2Power
If multiple power management chips are used, then sufficient power can be provided, but the programming and control complexity increases
Solution Approach 1:
A control circuit is configured to selectively connect the programming signal input terminal to either the first or second power management chip based on a control signal. This preliminary routing action simplifies programming by ensuring that programming signals are directed to only one chip at a time, preventing programming conflicts while enabling independent configuration of each power management chip
Solution Approach 2:
The system dynamically switches the programming signal routing between the first and second power management chips based on operational requirements. The control circuit can change which chip receives programming signals, allowing flexible adaptation to different display modes, refresh rates, or power requirements without increasing permanent system complexity
3Adaptability or versatility
If power management chips are not selectively programmable, then the control circuit is simple, but the system cannot adapt to different display requirements
Solution Approach 1:
The control circuit is pre-configured with switching mechanisms that can selectively connect the programming signal input terminal to different power management chips. This preliminary setup enables the system to adapt to various display requirements (different refresh rates, resolutions, or screen sizes) by directing programming signals to the appropriate chip, while keeping the control circuit architecture relatively simple through predefined routing paths
Data Source
AI summary
A power supply circuit, a driving method thereof, a printed circuit board, a display module and a display apparatus are disclosed, which relates to a technical field of displaying. The power supply circuit includes a first power management chip and a second power management chip configured to be respectively connected with a display panel and provide different driving signals to the display panel, and the driving signals are configured for driving the display panel to display.