Voltage Regulator Synchronization to Reduce Input Capacitance
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Solution Overview
Problem
Traditional computing device designs require a large number of capacitors due to asynchronous operation of voltage regulators, leading to increased capacitance and physical space requirements, which are costly and inefficient.
Innovation Solution
A multi-phase oscillator synchronizes voltage regulators to minimize overlap in input current, reducing the need for capacitors by ensuring they do not fire simultaneously, thus reducing the overall capacitance required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage regulators operate asynchronously to handle peak current demands, then current supply reliability is improved, but the number of capacitors required increases
Solution Approach 1:
The patent applies periodic action by implementing phased pulsing of voltage regulators, where each regulator operates in alternating phases rather than simultaneously. This periodic operation pattern allows capacitors to recharge during low-demand phases while still meeting peak current requirements, thereby reducing the total capacitor count needed while maintaining current supply reliability.
Solution Approach 2:
The patent implements dynamics by transitioning from static asynchronous operation to dynamic phased operation. The system dynamically adjusts the operation timing of voltage regulators based on detected current demands, enabling coordinated pulsing that reduces peak simultaneous current requirements and consequently reduces the capacitor bank size needed.
2Productivity
If a large number of capacitors are used to handle peak current, then current demand coverage is improved, but physical space and cost increase
Solution Approach 1:
By implementing periodic phased pulsing of voltage regulators, the system spreads current demand over time rather than requiring all capacitors to discharge simultaneously. This temporal distribution allows a smaller capacitor bank to meet the same total current demand, reducing the physical space required on the motherboard.
Solution Approach 2:
The system performs preliminary detection of current demands and pre-coordinates the pulsing schedules of voltage regulators. By anticipating peak current requirements and preparing phased operation schedules in advance, the system ensures adequate current coverage while using minimal capacitor capacity, thereby reducing the required physical space for capacitor placement.
3Adaptability or versatility
If voltage regulators operate at different frequencies, then operational flexibility is improved, but synchronization complexity increases
Solution Approach 1:
The patent applies parameter changes by allowing voltage regulators to operate at different frequencies while implementing a master clock synchronization mechanism. The system changes the operational parameters dynamically, adjusting phase relationships and timing based on detected current demands, thereby maintaining operational flexibility while managing synchronization through centralized control.
Data Source
AI summary
In some implementations, a computing device may include a plurality of voltage regulators including a first voltage regulator and a second voltage regulator, and a multi-phase oscillator, connected to the first voltage regulator and the second voltage regulator, configured to synchronize the first voltage regulator and the second voltage regulator.