Voltage Regulator Jitter Control via Trim Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Designing a decoupling capacitor for a switching voltage regulator is challenging due to the need to consider multiple design factors such as impedance, inductance, capacitance, and switching frequency, and integrating it within a single package structure with an integrated circuit die further complicates the placement and effectiveness of the capacitor in reducing signal crosstalk-induced noise and jitter.
Innovation Solution
A voltage regulator package with a jitter control mechanism that includes a programmable trim circuit and a decoupling capacitor, where the trim circuit adjusts the periodic signal frequency to minimize jitter by determining the optimal switching frequency of the voltage regulator, using a test apparatus to calibrate and adjust the activation of the voltage regulator device for reduced jitter on the integrated circuit die.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a decoupling capacitor is designed for a switching voltage regulator, then signal crosstalk-induced noise and jitter are reduced, but the device complexity and placement difficulty increase due to multiple design factors and single package integration constraints
Solution Approach 1:
The patent applies parameter changes by making the switching frequency tunable through a trim circuit that can adjust the periodic signal frequency. This allows optimization of the voltage regulator's switching frequency to minimize jitter and noise, directly addressing the technical contradiction by changing the frequency parameter to reduce harmful effects while maintaining manageable device complexity
Solution Approach 2:
The patent introduces a trim circuit as an intermediary component between the oscillator and the voltage regulator module. This intermediary allows for precise control and adjustment of the switching frequency, enabling optimization of jitter performance without significantly increasing overall device complexity. The trim circuit acts as a mediator that fine-tunes the system parameters to achieve better signal quality
2Productivity
If the switching frequency of the voltage regulator is increased, then voltage regulation performance is improved, but signal jitter and noise increase due to signal crosstalk
Solution Approach 1:
The patent applies dynamics by making the switching frequency adjustable rather than fixed. The trim circuit enables dynamic tuning of the periodic signal frequency to optimize the balance between voltage regulation performance and noise reduction. This dynamic approach allows the system to adapt the switching frequency based on specific operating conditions to minimize jitter while maintaining regulation performance
Solution Approach 2:
The patent changes the switching frequency parameter through the trim circuit to optimize system performance. By adjusting this critical parameter, the system can achieve better voltage regulation while minimizing signal crosstalk-induced noise and jitter, directly resolving the contradiction between performance and noise
Data Source
AI summary
A voltage regulator package includes a voltage regulator module that outputs a voltage signal of a particular voltage level through an output terminal is provided. The voltage regulator module may be switched on according to a periodic signal having a periodic signal frequency as a variable. The periodic signal frequency may be tuned to reduce impedance, jitter, or noise.