Star vs bus power routing in PCB Design - Dashboard Approaches Compared

Dashboard Mode - Star vs bus power routing

Goal

Compare the power distribution methods in PCB design: star routing versus bus routing. Understand which method provides better voltage stability and current distribution for different components.

Sample Data

Component	Current Draw (mA)	Voltage Drop Star (mV)	Voltage Drop Bus (mV)
IC1	150	20	35
IC2	100	15	25
IC3	200	30	50
IC4	120	18	28
IC5	80	12	20

Dashboard Components

• KPI Card: Average Voltage Drop Star Routing
  Formula: Average of Voltage Drop Star column = (20+15+30+18+12)/5 = 19 mV
• KPI Card: Average Voltage Drop Bus Routing
  Formula: Average of Voltage Drop Bus column = (35+25+50+28+20)/5 = 31.6 mV
• Bar Chart: Voltage Drop Comparison per Component
  Shows side-by-side bars for Voltage Drop Star and Voltage Drop Bus for each component IC1 to IC5.
• Table: Detailed Component Data
  Shows Component, Current Draw, Voltage Drop Star, Voltage Drop Bus columns for reference.

Dashboard Layout

+----------------------------+----------------------------+
| Average Voltage Drop Star   | Average Voltage Drop Bus   |
|          (KPI Card)         |          (KPI Card)         |
+----------------------------+----------------------------+
|                                                        |
|          Voltage Drop Comparison Bar Chart             |
|                                                        |
+--------------------------------------------------------+
|                                                        |
|               Detailed Component Data Table            |
|                                                        |
+--------------------------------------------------------+

Interactivity

Filter by Component: Selecting a component filters the bar chart and table to show only that component's data. This helps focus on voltage drop differences for a specific IC.

Filter by Current Draw Range: Adjusting the current draw slider filters components in the bar chart and table, showing how voltage drops vary with current.

Self Check

If you add a filter to show only components with Current Draw above 100 mA, which components remain visible in the bar chart and table?

Answer: IC1 (150 mA), IC3 (200 mA), and IC4 (120 mA) remain visible. The KPI cards update their averages based on these filtered components.

Key Result

Dashboard compares voltage drop performance of star vs bus power routing across PCB components.