Bidirectional Charge Pump Data Transmission via Coupling Capacitance
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Solution Overview
Problem
Existing charge pumps can only transmit energy and data unidirectionally, requiring separate data transmission paths and compromising efficiency due to suboptimal parameter modulation for energy transmission.
Innovation Solution
A charge pump design that enables bidirectional data transmission by modulating parameters such as mark-space ratio, frequency, and phase position of coupling capacitances, allowing simultaneous energy and data transfer between voltage domains with a return channel optimized for minimal energy expenditure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If charge pumps are used to transmit energy and data bidirectionally, then data transmission capability is improved, but efficiency deteriorates due to parameter modulation
Solution Approach 1:
The charge pump operation is segmented into distinct phases: energy transmission phases and data transmission phases. During energy transmission, optimal parameters are used for efficiency. During data transmission, parameter modulation is applied only when needed. This segmentation allows the system to achieve bidirectional data transmission while minimizing efficiency loss by maintaining optimal energy transmission parameters during dedicated energy phases.
Solution Approach 2:
The system employs periodic alternation between energy transmission modes and data transmission modes. By periodically switching between these modes, the charge pump can transmit energy with optimal efficiency during energy phases, while enabling bidirectional data transmission during designated data phases through parameter modulation of the coupling capacitances.
2Loss of information
If parameter modulation is applied for data transmission, then data transmission capability is improved, but energy transmission efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts the parameters of the coupling capacitances (mark-space ratio, frequency, phase position) based on the operational mode. During energy transmission, parameters are optimized for maximum efficiency. During data transmission, parameters are dynamically modulated to encode information. This dynamic adaptation allows the system to resolve the contradiction by having optimal parameters for each specific function at the appropriate time.
Solution Approach 2:
The invention utilizes controlled changes in parameters of the coupling capacitances to achieve data transmission. By modulating parameters such as mark-space ratio, frequency, and phase position during data phases, the system enables bidirectional communication. These parameter changes are applied selectively rather than continuously, allowing energy transmission efficiency to be maintained during energy phases while achieving data transmission capability during data phases.
3Reliability
If separate data transmission paths are used, then data transmission reliability is improved, but device complexity increases
Solution Approach 1:
The charge pump system is designed to perform multiple functions through a single integrated structure. The same coupling capacitances used for energy transmission are also used for data transmission through parameter modulation. This multi-functionality eliminates the need for separate dedicated data transmission paths, thereby reducing device complexity while maintaining reliable bidirectional communication through the unified charge pump mechanism.
Solution Approach 2:
The invention merges the energy transmission function and data transmission function into a single charge pump system. By combining these functions, the system avoids the complexity of implementing separate parallel paths for energy and data transmission. The unified structure uses parameter modulation of the coupling capacitances to encode data within the energy transmission process itself, achieving reliable communication without increasing structural 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
Enables bidirectional data streams with equal data rates for forward and return channels without bandwidth loss, reducing the need for dedicated clock systems and allowing flexible optimization of time intervals for data or energy transmission.
Implementation Method 1
a first coupling capacitance (301) by way of which the primary side (100) is connected to the secondary side (200)
Data Source
AI summary
A charge pump for transmitting energy and data has a primary side, a secondary side and a first coupling capacitance by way of which the primary side is connected to the secondary side, wherein the primary side is designed to periodically transmit energy in the form of a charge packet to the secondary side with the first coupling capacitance during a charge pump interval, the primary side being designed to impress an item of data on the charge pump interval by modulation, wherein the secondary side is designed to receive the item of data by demodulating the charge pump interval, wherein the secondary side is designed to impress an item of data on the charge pump interval by modulation, and wherein the primary side is designed to receive the item of data by demodulation of the charge pump interval.