Voltage Conversion Device Boost Circuit Low Input Operation
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Solution Overview
Problem
Existing voltage conversion devices operable as switched capacitors fail to convert input voltage to a predetermined output voltage when the input voltage drops below a predetermined reference voltage, as the control circuit cannot turn on the switches, thereby disrupting the conversion process.
Innovation Solution
Incorporating a boost circuit that raises the input voltage to a level higher than the reference voltage and a control unit to manage switch states based on the boosted voltage, ensuring stable operation even when the input voltage is below the reference voltage, allowing for conversion to a predetermined output voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the input voltage is used directly to control the switches, then the device structure is simple, but the device cannot operate when the input voltage drops below the reference voltage
Solution Approach 1:
The patent introduces a boost circuit as an intermediary component between the input voltage source and the control switches. This boost circuit generates a boosted voltage that is always sufficient to turn on the switches, regardless of whether the input voltage is above or below the reference voltage. The boosted voltage acts as a mediator that decouples the switch control requirement from the input voltage level, enabling reliable operation across a wide input voltage range while maintaining a relatively simple overall device structure
2Reliability
If a boost circuit is added to raise the input voltage, then the device can operate at low input voltages, but the device complexity increases
Solution Approach 1:
The control unit in the patent is designed with multi-functionality: it simultaneously performs the control function of managing switch states and the detection function of monitoring the input voltage level. By integrating these functions into a single component, the patent avoids adding separate detection circuits or control units, thereby minimizing the increase in device complexity while ensuring continuous and reliable operation across all input voltage conditions
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
Enables stable conversion of input voltage to a lower output voltage, maintaining functionality even when the input voltage falls below the reference voltage, ensuring continuous operation and improved reliability.
Implementation Method 1
a boost circuit that raises an input voltage to the voltage conversion device to a voltage that is higher than a predetermined reference voltage
Data Source
AI summary
A voltage conversion device that is operable as a switched capacitor, includes switches, a boost circuit that raises an input voltage to the voltage conversion device to a voltage that is higher than a predetermined reference voltage, and a control unit that controls states of the switches based on a voltage output from the boost circuit.