Circuit Board Resistor Layout for Voltage Converter Footprint Reduction
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Solution Overview
Problem
Existing circuit boards for voltage converters require a large footprint to accommodate resistor element groups for stepping down high input and output voltages, necessitating a compact design to reduce space usage.
Innovation Solution
The circuit board incorporates a configuration with first and second resistor circuits, differential amplifier circuits, and an A/D conversion circuit, where the second and fourth resistor element groups share the same input voltage, allowing them to be adjacent and reducing the need for a creeping distance, thus enabling a smaller footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If resistor element groups are arranged to step down high input and output voltages, then voltage measurement capability is achieved, but circuit board footprint increases
Solution Approach 1:
The patent merges the second resistor element group and fourth resistor element group by arranging them adjacent to each other on the circuit board. This is made possible because both groups receive the same second voltage, eliminating the need for insulation spacing between them. The merging reduces the overall area occupied by resistor elements while maintaining the voltage measurement functionality for both input and output voltages.
2Reliability
If creeping distance is maintained between resistor element groups, then electrical insulation is ensured, but space utilization decreases
Solution Approach 1:
The patent applies equipotentiality by ensuring that the second resistor element group and fourth resistor element group both receive the same second voltage. Since both groups are at the same potential level, no creeping distance or insulation spacing is required between them. This eliminates the need for wasted space while maintaining electrical safety, as there is no potential difference that could cause arcing or insulation breakdown.
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
This configuration allows for a more compact layout of resistor element groups on the circuit board, effectively reducing the overall footprint while ensuring proper voltage stepping and A/D conversion, thereby improving the efficiency and space utilization in voltage converter systems.
Implementation Method 1
a resistor circuit that steps down each of the input voltage and the output voltage in the voltage converter
Implementation Method 2
a first differential amplifier circuit comprising a pair of input terminals, and configured such that the first voltage is inputted to one of the pair of input terminals via the first resistor element group of the first resistor circuit and the second voltage is inputted to other one of the pair of input terminals via the second resistor element group of the second resistor circuit
Data Source
AI summary
A circuit board which includes a circuit that measures an input voltage and an output voltage in a voltage converter that converts the input voltage which is a difference between first and second voltages into the output voltage which is a difference between third and second voltages, may include: first to fourth resistor circuits respectively including first to fourth resistor element groups; a first differential amplifier circuit configured such that the first voltage is inputted via the first resistor element group and the second voltage is inputted via the second resistor element group; and a second differential amplifier circuit configured such that the third voltage is inputted via the third resistor element group and the second voltage is inputted via the fourth resistor element group. The second and fourth resistor element groups may be arranged to be adjacent to each other between the first and third resistor element groups.