Charge Pump Converter Dynamic Current Control
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Solution Overview
Problem
Charge pump converter circuits in the semiconductor industry face inefficiencies in energy utilization, failing to meet energy conservation specifications such as Energy-Star requirements, particularly in managing current supply to loads.
Innovation Solution
A charge pump converter system that selectively enables transistors to control charging and discharging currents based on input and output voltage values, using a clock circuit and control circuits with NAND gates and comparators to manage charging and discharging cycles, thereby optimizing energy use and preventing large current spikes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional charge pump converter circuits are used to create output voltages from input voltage, then voltage conversion is achieved, but energy efficiency is insufficient to meet conservation specifications
Solution Approach 1:
The patent implements dynamic control of transistor switching based on real-time monitoring of input voltage levels and load conditions. The control circuit adjusts the switching timing and duration of power transistors dynamically, enabling the charge pump to adapt its operation to match actual energy requirements, thereby maximizing energy efficiency while meeting conservation specifications.
Solution Approach 2:
The patent incorporates feedback mechanisms where the control circuit continuously monitors input voltage levels, output voltage conditions, and load current requirements. This feedback information is used to adjust the switching control signals for the power transistors, optimizing the charge transfer process and minimizing energy losses during voltage conversion operations.
2Ease of operation
If current monitoring is implemented to adjust current supplied to load, then energy management is improved, but overall efficiency remains insufficient for energy conservation standards
Solution Approach 1:
The patent implements preliminary action by pre-charging capacitors to optimal voltage levels before load discharge operations. The control circuit anticipates energy transfer requirements and prepares the charge pump circuitry in advance, ensuring that when current is supplied to the load, it is delivered at peak efficiency without excessive energy losses during the transfer process.
Data Source
AI summary
In one embodiment, a charge pump converter is formed to use various values of an output voltage to selectively control a value of a charging current during a charging cycle of the charge pump converter.