Complex Power Management Device Common Reference Line
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Solution Overview
Problem
The integration of multiple non-isolated DC/DC converters in a single electronic-component built-in substrate leads to increased errors in step-down and step-up operations due to limited design flexibility for internal wiring and via conductors, affecting voltage stability and accuracy.
Innovation Solution
A complex power management device with a common reference line connected to all DC/DC converters, featuring a multilayer substrate and integrated semiconductor components, which includes switch elements, inductors, and output voltage adjustment circuits to control switch states and reduce voltage drops or rises, thereby improving operational accuracy and reducing ripple and resonance noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple non-isolated DC/DC converters are integrated in one electronic-component built-in substrate, then device integration and size reduction are achieved, but operational accuracy and voltage stability deteriorate due to limited design flexibility for internal wiring and via conductors
Solution Approach 1:
The patent introduces a common reference line that segments the ground connection path for each DC/DC converter, providing dedicated reference potential paths that reduce mutual interference and maintain operational accuracy despite high integration density
Solution Approach 2:
The common reference line acts as an intermediary element between the multiple DC/DC converters and the substrate ground, mediating the electrical reference potential to ensure stable operation while allowing close integration of multiple converters
2Adaptability or versatility
If multiple non-isolated DC/DC converters are integrated in one electronic-component built-in substrate, then power management capability is enhanced, but voltage stability deteriorates due to voltage drops and rises from limited wiring flexibility
Solution Approach 1:
The common reference line segments the ground potential distribution, providing stable reference voltage paths that prevent voltage drops and rises caused by current flow in shared wiring, thereby maintaining voltage stability while supporting multiple converters
Solution Approach 2:
The common reference line creates equipotential regions for each DC/DC converter by providing dedicated low-impedance paths to ground, ensuring that each converter operates with a stable reference potential despite the integrated configuration
3Volume of moving object
If multiple non-isolated DC/DC converters are integrated in one electronic-component built-in substrate, then device miniaturization is achieved, but noise generation increases due to limited design flexibility for internal wiring
Solution Approach 1:
The common reference line segments the noise pathways by providing dedicated ground connections for each converter, reducing the coupling of ripple and resonance noise between adjacent converters while maintaining compact device size
Solution Approach 2:
The patent extracts the reference potential function from the shared substrate ground and provides it through dedicated common reference lines to each converter, isolating the noise-sensitive reference paths from the noisy switching currents
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 solution enhances the accuracy of multiple DC/DC converters' operations, reduces ripple noise, and minimizes high-frequency resonance noise, improving overall power management efficiency in communication devices.
Implementation Method 1
The non-isolated DC/DC converters use switching of transistors to convert the voltage
Implementation Method 2
a choke coil 103
Data Source
AI summary
A complex power management device includes DC/DC converters and a common reference line connected in common to the DC/DC converters. Each of the DC/DC converters includes a first switch element and inductor connected in series between first and second nodes, a second switch element, one end of which is connected to a third node that is a connection point of the first switch element and the inductor and the other end of which is connected to the corresponding ground terminal, and an output voltage adjustment circuit, which exclusively controls an ON/OFF state of the first and second switch elements based on a voltage of a fourth node that is the other end of the second switch element. The common reference line is connected to a fifth node that is provided on a wire connecting the second switch element of each of the DC/DC converters to the ground terminal.