Power System Design Guide

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Below is a Mermaid block diagram that outlines the interconnection of the key power system components as described:

Image

240V AC Input
Transformer & Rectifier
DC Bus
Protection: Schottky Diodes & Capacitors
Boost Converter (MT3608)
Buck Converter for node_9V
Buck Converter for 3.3V (AP7333-33)
Buck Converter for 1.8V (AP7333-18)
LED Indicators (Status)
This diagram shows:
  • The 240V AC Input is stepped down and rectified by the Transformer & Rectifier to provide a DC bus.
  • The DC output flows through Protection elements (Schottky diodes and capacitors).
  • The Boost Converter (MT3608) then raises the voltage (from battery or DC bus) to the level needed for further regulation.
  • The boosted voltage is branched off to:
    • A buck converter for final 9V output
    • A buck converter for 3.3V output (using the AP7333-33)
    • (And a buck converter for 1.8V output using the AP7333-18, if needed for internal auxiliary functions.)
  • LED Indicators monitor the status of the outputs.
Feel free to adjust the block labels as needed for your design documentation.
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