Intermediate Bus Converter Voltage Tracking for Power Delivery
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Solution Overview
Problem
Conventional power delivery solutions in battery-powered devices, such as notebook computers, experience high-power losses due to inefficiencies in both narrow voltage direct charging (NVDC) and hybrid power buck-boost (HPBB) architectures, particularly when dealing with high-power demands and turbo boost modes.
Innovation Solution
An intermediate bus converter (IBC) with target voltage tracking capability is introduced, which varies the system power input voltage based on the battery output voltage, allowing for efficient power delivery by bypassing charger implementation and reducing latency, thereby enhancing overall system efficiency and responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional power delivery solutions (NVDC or HPBB) are used, then the system can deliver power to high-power demand applications, but power losses increase significantly
Solution Approach 1:
The IBC dynamically adjusts the system power input voltage based on the battery output voltage through target voltage tracking. This dynamic adjustment allows the system to operate at optimal voltage levels under different load conditions, minimizing power losses while maintaining the ability to deliver high power when needed. The voltage tracking mechanism ensures the IBC adapts its operation in real-time to match battery conditions.
Solution Approach 2:
The invention changes the operating voltage parameter of the system power input based on battery output voltage. By varying the input voltage to match battery conditions, the IBC achieves efficient power conversion across different operating points, reducing power losses compared to fixed-voltage conventional solutions while maintaining high power delivery capability.
2Use of energy by moving object
If NVDC architecture is used, then charging efficiency is improved, but component sizes increase and power losses occur during battery supplementation
Solution Approach 1:
The power delivery system is segmented into distinct functional blocks: the IBC for voltage conversion and the charger for battery charging. This segmentation allows each component to be optimized independently - the IBC handles voltage matching with minimal component size, while the charger focuses on efficient battery charging, collectively reducing overall component size while maintaining charging efficiency.
Solution Approach 2:
The IBC acts as an intermediary between the system power input and the battery, performing voltage conversion and isolation. This intermediary function allows the charger to operate independently at optimal charging conditions while the IBC handles voltage matching, reducing the need for oversized components in either block and enabling efficient battery supplementation.
3Adaptability or versatility
If HPBB architecture is used, then power delivery flexibility is improved, but power losses increase during high-power operations
Solution Approach 1:
The IBC extracts the voltage conversion function from the charger, allowing the charger to operate in a simplified and more efficient manner. By taking out the buck-boost conversion functionality and placing it in the IBC with target voltage tracking, the system maintains HPBB flexibility while reducing the power losses associated with high-power operations through more efficient voltage conversion.
4Power
If conventional power delivery solutions are used, then the system can meet high-power demands, but latency increases during battery supplementation
Solution Approach 1:
The IBC continuously tracks the battery output voltage and maintains the system power input voltage ready to match battery conditions. This preliminary voltage alignment ensures that when battery supplementation is needed, the voltage matching is already complete or nearly complete, minimizing the latency during power transition while maintaining high-power demand capability.
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 IBC architecture achieves lower power losses and reduced component sizes, enabling efficient power conversion and minimal latency during battery supplementation, thus supporting high-power requirements without the disadvantages of traditional NVDC and HPBB topologies.
Implementation Method 1
an intermediate bus converter coupled to an external adapter output, a system power input and the battery output, wherein the intermediate bus converter is to vary a voltage level of the system power input based on the battery output
Data Source
AI summary
Systems, apparatuses, and methods may provide for power delivery circuit technology that includes a charger controller coupled to a battery output and an intermediate bus converter coupled to an adapter output, a system power input and the battery output, wherein the intermediate bus converter varies a voltage level of the system power input based on the battery output. In one example, the voltage level of the system power input is one or more of a percentage value or an absolute value greater than a voltage level of the battery output. Additionally, the charger controller may connect the battery output to the system power input in response to a turbo power event.