Reconfigurable Bipolar Charge Pump Circuit for Multi-Level Voltage Generation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing charge pumps in mobile devices are not adequately miniaturized, leading to inefficiencies and reduced battery life, as they lack the ability to efficiently generate multiple output voltage levels and adapt to varying power requirements.
Innovation Solution
A reconfigurable bipolar output charge pump circuit with a switch network and controller that connects input and output terminals variably to achieve multiple charge pump modes, generating positive and negative output voltages at predefined levels, thereby reducing power loss and increasing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a charge pump is miniaturized for mobile devices, then device size is reduced, but power efficiency and battery life are compromised
Solution Approach 1:
The charge pump employs a reconfigurable switch network that dynamically changes its topology based on operating conditions. The controller adjusts the connection states of multiple switches to reconfigure the charge pump between different operating modes (first charge pump mode and second charge pump mode), enabling adaptive optimization of power efficiency while maintaining a compact form factor suitable for mobile devices
Solution Approach 2:
The charge pump changes its operational parameters by switching between different charge pump modes. In the first mode, it operates with a first set of switch configurations to achieve a first power efficiency, while in the second mode, it uses a different switch configuration to achieve a second power efficiency. This parameter switching allows the compact charge pump to adapt to varying power requirements and maintain high efficiency across different operating conditions
2Adaptability or versatility
If a charge pump generates multiple output voltage levels, then adaptability to varying power requirements is improved, but device complexity increases
Solution Approach 1:
The charge pump circuit is designed with multi-functionality to generate multiple output voltage levels (first output voltage level and second output voltage level) using a unified circuit architecture. The switch network and controller work together to reconfigure the same physical components for different operating modes, eliminating the need for separate dedicated circuits for each voltage level and thereby managing complexity while providing versatility
Solution Approach 2:
The charge pump uses dynamic reconfiguration of its internal switch network to achieve multiple output voltage levels. The controller generates control signals that dynamically adjust the switch states based on the desired output voltage level, allowing a single compact circuit to perform multiple functions without requiring multiple fixed-function circuits, thus balancing adaptability with controlled complexity
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
The solution enables the charge pump to efficiently generate multiple output voltage levels, reducing power loss and increasing efficiency, which extends battery life and reduces the size and implementation costs of mobile device components.
Implementation Method 1
first and second terminals configured to be connected to a first flying capacitor, and third and fourth terminals configured to be connected to a second flying capacitor
Data Source
AI summary
A reconfigurable bipolar output charge pump circuit includes an input terminal configured to receive an input voltage. First and second terminals are connected to a first flying capacitor, and third and fourth terminals are connected to a second flying capacitor. First and second output terminals are respectively connected to first and second output capacitors and configured to respectively provide a positive output voltage and a negative output voltage. A switch network includes switches configured to connect the input terminal, the first to fourth terminals, and the first and second output terminals to each other in response to switch control signals. The switch network is configured to provide one of multiple potential charge pump modes. A controller generates the switch control signals in response to a mode control signal indicating one of the charge pump modes so that a magnitude of the positive output voltage and the negative output voltage becomes one of multiple predefined voltage levels.