Power System Design Overview

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Below is an updated Mermaid code block showing a high-level block diagram with the battery removed and a 12V transformer added:
Diagram



  
    
  
  
    
  











Reverse current protection

Reverse current protection

Reverse current protection










Solar Panel node_6V node_2W
USB Input node_5V
Transformer node_12V
Schottky Diodes
Power Selection Circuit
DC Bus
"Buck Converter (to node_5V)"
"Buck Regulator (AP7333-33 for 3.3V)"
"Buck Regulator (AP7333-18 for 1.8V)"
LED Indicators
This diagram reflects the updated design:
  • Inputs: Solar Panel (6V, 2W), USB (5V), and Transformer (12V).
  • Protection: Schottky diodes prevent reverse current.
  • Power Management: The Power Selection Circuit automatically selects the appropriate power source feeding a common DC bus.
  • Voltage Regulation: Buck converters produce regulated 5V, 3.3V, and 1.8V supplies.
  • Indicators: LED indicators display the charging and power status.
You can use this diagram as a reference for updating your project design in Flux.
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