Phase Comparator Rate Offset Generation for Power Converter Stability
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Solution Overview
Problem
Conventional systems fail to effectively manage changes in voltage magnitude and rate, leading to inconsistent power delivery in environments with rapidly changing power requirements, such as electronic computing systems with 'hot-swapping' peripheral devices.
Innovation Solution
A phase comparator device that generates magnitude and rate offsets by obtaining input and system voltages, calculating a voltage rate gain based on aggregate inductance, and producing a rate offset voltage when the input and system voltages are not equal, using a rate predictor device coupled to input and system voltage nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional systems are used without magnitude and rate offset generation, then the system structure remains simple, but power delivery consistency deteriorates under rapidly changing power requirements
Solution Approach 1:
The rate predictor device calculates voltage rate gain based on aggregate inductance in advance, and the magnitude offset generator prepares magnitude offsets based on system voltage differences before they become critical. This preliminary computation and preparation of correction values enables the system to respond quickly to changing power requirements, maintaining power delivery consistency without complex real-time adjustments
Solution Approach 2:
The patent introduces intermediate devices including the rate predictor device that computes voltage rate gain, the magnitude offset generator that creates magnitude offsets, and the phase comparator that compares input and system voltages. These intermediary components process voltage information and generate correction signals that bridge the gap between raw voltage inputs and stable power output, resolving the contradiction between simplicity and consistency
2Stability of the object's composition
If voltage magnitude and rate changes are not compensated, then the system operation remains simple, but power characteristics consistency deteriorates during hot-swapping events
Solution Approach 1:
The phase comparator continuously compares the input voltage with the system voltage and feeds back the difference information to the magnitude offset generator. This feedback loop enables the system to detect voltage deviations during hot-swapping events and automatically generate appropriate magnitude offsets to maintain consistent power characteristics, resolving the stability-complexity contradiction
Solution Approach 2:
The system dynamically changes parameters including the magnitude offset values generated by the offset generator and the phase comparator output, which adjusts its comparison characteristics based on voltage differences. These parameter changes enable the system to adapt to rapidly changing power requirements during hot-swapping while maintaining stable power delivery characteristics
Data Source
AI summary
Example implementations include a method of obtaining an input voltage of a power converter circuit and a system voltage of the power converter circuit, obtaining a voltage rate gain based on an aggregate inductance of the power converter circuit, and in accordance with a determination that the input voltage and the system voltage are not equal, generating a rate offset voltage based on the voltage rate gain and the system voltage difference. Example implementations also include a device with a rate predictor device operatively coupled to an input voltage node and a system voltage node, and configured to obtain an input voltage of a power converter circuit and a system voltage of the power converter circuit, configured to obtain a voltage rate gain based on an aggregate inductance of the power converter circuit, and configured to, in accordance with a determination that the input voltage and the system voltage are not equal, generate a rate offset voltage based on the voltage rate gain and the system voltage difference.