Adaptive Combination Power Supply Circuit for High-Efficiency Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional power supply circuits face challenges in achieving high efficiency and power density, particularly under heavy loads and varying battery voltage ranges, leading to thermal issues and limitations in supporting higher charging currents with existing adaptor cables.
Innovation Solution
The adaptive combination power supply circuit, which can switch between a three-level buck converter and a divide-by-two charge pump mode, utilizes a switch connected in parallel with an inductive element, allowing for adaptive operation based on input voltage and charging status, thereby optimizing efficiency and power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional power supply circuit operates under heavy loads and varying battery voltage ranges, then it can deliver required power, but efficiency decreases and thermal issues occur
Solution Approach 1:
The power supply circuit dynamically switches between buck converter mode and charge pump mode based on real-time operating conditions such as input voltage, output voltage, and load current. This dynamic adaptation allows the circuit to operate in the most efficient mode for each specific condition, maximizing charging efficiency while maintaining required power delivery capability under heavy loads and varying battery voltage ranges.
Solution Approach 2:
The circuit changes its operational parameters by switching between two distinct topologies (buck converter and charge pump) depending on the operating range. When input voltage is significantly higher than output voltage, it operates as a buck converter; when voltages are closer, it switches to charge pump mode. This parameter change approach resolves the contradiction by adapting to different voltage conditions to maintain high efficiency.
2Power
If a conventional power supply circuit operates under heavy loads, then it can meet power requirements, but thermal hotspots are generated
Solution Approach 1:
The circuit dynamically selects between buck converter mode and charge pump mode based on thermal conditions and load requirements. By switching to charge pump mode when appropriate, the circuit reduces power loss and thermal generation while maintaining required power delivery, thereby avoiding thermal hotspots under heavy load conditions.
Solution Approach 2:
The circuit converts the potential harm of high power delivery into benefit by intelligently selecting the topology that minimizes thermal generation. Instead of allowing thermal hotspots to develop, the system uses the high power requirement as a trigger to switch to the more thermally efficient charge pump mode, transforming the potential problem into an opportunity for optimized thermal management.
3Adaptability or versatility
If a conventional power supply circuit uses existing adaptor cables, then it maintains compatibility, but supports limited charging current
Solution Approach 1:
The power supply circuit achieves multi-functionality by incorporating both buck converter and charge pump topologies within a single system. This universal design allows the circuit to support higher charging currents while maintaining compatibility with existing adaptor cables, as it can adapt its internal operation rather than requiring cable changes.
Solution Approach 2:
The circuit dynamically adjusts its internal configuration to maximize charging current capability within the constraints of existing cables. By switching between topologies based on current requirements and cable capabilities, the system optimizes productivity without sacrificing adaptability to existing infrastructure.
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 solution enhances charging efficiency, reduces power loss, avoids thermal hotspots, supports higher power specifications with existing cables, and operates in the highest efficiency range across different scenarios, offering flexible configuration options for different customer specifications.
Implementation Method 1
an inductive element having a first terminal coupled to the second node
Implementation Method 2
a capacitive element having a first terminal coupled to the first node and a second terminal coupled to the third node
Data Source
AI summary
Certain aspects of the present disclosure generally relate to an adaptive combination power supply circuit. The adaptive combination power supply circuit may be capable of switching between performing as a three-level buck converter and as a divide-by-two charge pump. One example power supply circuit generally includes a first transistor; a second transistor coupled to the first transistor via a first node; a third transistor coupled to the second transistor via a second node; a fourth transistor coupled to the third transistor via a third node; a capacitive element having a first terminal coupled to the first node and a second terminal coupled to the third node; an inductive element having a first terminal coupled to the second node; and a switch having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element.