Converter Control Chip Periodic Step-Down Voltage Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional converters in electronic devices have high power consumption and low conversion efficiency due to the need for frequent step-down conversion of high input voltages, which results in significant energy wastage and increased heat generation.
Innovation Solution
The proposed converter includes a control chip, a switching transistor, a step-down circuit, and a linear power circuit, where the control chip generates a control voltage by performing step-down conversion on an input voltage, and then uses this control voltage to control the switching transistor, allowing the step-down circuit to output an operating voltage to an external electrical unit. The linear power circuit further reduces the operating voltage to a bootstrap voltage, which is then used by the control chip to stop the initial step-down conversion, thereby reducing the power consumption and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control chip performs step-down conversion on high input voltage continuously, then the control voltage can be maintained, but power consumption increases and conversion efficiency decreases
Solution Approach 1:
The control chip performs step-down conversion periodically rather than continuously. It alternates between performing step-down conversion on input voltage to generate control voltage, and performing step-down conversion on bootstrap voltage to generate control voltage. This periodic switching reduces the overall power consumption while maintaining control voltage stability through timely voltage generation.
Solution Approach 2:
The linear power circuit acts as an intermediary to generate bootstrap voltage from the operating voltage. This bootstrap voltage serves as an intermediate voltage source that allows the control chip to generate control voltage without continuously processing high input voltage, thereby reducing power consumption while maintaining control functionality.
2Reliability
If the control chip performs step-down conversion on high input voltage continuously, then the control voltage can be maintained, but conversion efficiency decreases
Solution Approach 1:
The control chip alternates between processing high input voltage and processing low bootstrap voltage. This periodic action reduces the cumulative energy loss in step-down conversion while ensuring control voltage is generated timely, thereby improving overall converter conversion efficiency without sacrificing control voltage stability.
Solution Approach 2:
The system changes the input voltage parameter for the control chip's step-down conversion. Instead of continuously converting high input voltage, the control chip switches between converting high input voltage and low bootstrap voltage. This parameter change reduces conversion losses and improves efficiency while maintaining control functionality.
3Reliability
If high input voltage is converted to operating voltage continuously, then the external electrical unit receives stable power, but energy wastage increases
Solution Approach 1:
The linear power circuit serves as an intermediary that converts operating voltage to bootstrap voltage. This intermediary conversion path allows the system to reduce the frequency of high-voltage-to-low-voltage conversions, thereby reducing energy wastage while maintaining stable operating voltage supply to the external electrical unit through the bootstrap voltage feedback mechanism.
4Reliability
If high input voltage is converted to operating voltage continuously, then the external electrical unit receives stable power, but heat generation increases
Solution Approach 1:
The converter system performs high-voltage step-down conversion periodically rather than continuously. The control chip alternates between processing high input voltage and low bootstrap voltage, which reduces the cumulative heat generation from resistive losses during voltage conversion while maintaining stable operating voltage through timely conversion cycles.
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 configuration reduces the power consumption of the control chip and enhances the conversion efficiency of the converter by allowing it to operate on a lower bootstrap voltage, leading to lower energy wastage and reduced heat generation, thus improving the overall performance and competitiveness of electronic devices like servers.
Implementation Method 1
a step-down circuit. The control chip is configured to: perform step-down conversion on an input voltage from an external power supply module to generate a control voltage
Implementation Method 2
The linear power circuit is configured to, when the linear power circuit receives the operating voltage outputted from the step-down circuit, perform step-down conversion on the received operating voltage to generate the bootstrap voltage
Data Source
AI summary
A converter includes a control chip, a switching transistor, a step-down circuit and a linear power circuit. The control chip is configured to: convert an input voltage from an external power supply module into a control voltage; when a bootstrap voltage is received, convert the bootstrap voltage into the control voltage and stop converting the input voltage; and control the switching transistor to be periodically turned on and off based on the control voltage to cause the power supply module to periodically output the input voltage to the step-down circuit. The step-down circuit is configured to generate an operating voltage based on the input voltage and outputs the operating voltage to an electrical unit and the linear power circuit. The linear power circuit is configured to convert the operating voltage into the bootstrap voltage and output the bootstrap voltage to the control chip.