Power Management Chip With Integrated Buck Control and Fewer Ports
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Solution Overview
Problem
Current power management integrated chips require complex peripheral circuit structures due to multiple buck circuits and on/off switching circuits, necessitating multiple ports and setups.
Innovation Solution
A power management circuit and chip design that incorporates a main control module with an enabling control terminal for on/off switching, two buck modules, and integrated resistors for gamma voltage output, along with filtering modules for display and common voltages, reducing the need for separate on/off switch power supplies and simplifying the peripheral circuit structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple buck circuits are equipped in the power management integrated chip, then multiple voltage outputs can be provided, but the peripheral circuit structure becomes complex and multiple ports require setup
Solution Approach 1:
The main control module is designed to perform multiple functions: it controls the on/off switching of the entire chip, manages multiple buck circuits (first and second buck circuits), and provides enable signals to various output modules. This multi-functional integration allows the chip to deliver multiple voltage outputs while avoiding the need for separate control circuits for each function, thereby reducing peripheral circuit complexity.
2Ease of operation
If separate on/off switching circuits are added for power management control, then power control functionality is achieved, but the peripheral circuit structure becomes more complex
Solution Approach 1:
The on/off switching control function is merged into the main control module rather than being implemented as a separate dedicated circuit. The main control module integrates the switching control logic with the power management functions, allowing the chip to be enabled or disabled globally without requiring additional peripheral switching circuits. This merging approach maintains operational control while simplifying the overall circuit structure.
3Adaptability or versatility
If multiple buck output terminals are configured, then multiple buck voltages can be output, but the chip configuration and peripheral circuits become more complex
Solution Approach 1:
The power management chip is segmented into distinct functional modules: the main control module, first buck circuit, second buck circuit, gamma voltage output module, and common voltage output module. Each module is responsible for specific voltage generation or control functions. This segmentation allows independent optimization of each module while maintaining clear interfaces, reducing the complexity of overall chip configuration despite providing multiple voltage outputs.
Data Source
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AI summary
The present application discloses a power management circuit and a power management chip. The power management circuit comprises : a main control module which comprises an enabling control end, wherein the main control module receives an on/off control signal by means of the enabling control end, and the on/off control signal is used for controlling the main control module to be turned on or turned off; a first buck module connected to a first buck output end of the main control module and used for outputting a first buck voltage after the main control module is turned on; and a second buck module connected to a second buck output end of the main control module and used for outputting a second buck voltage after the main control module is started.