Power System Design Overview
I want to design a power system that takes input from a solar panel, a rechargeable battery, or USB, with automatic power selection. The system should provide regulated 5V, 3.3V, and 1.8V outputs.
Project Requirements:
- Inputs:
- Solar Panel (6V, 2W)
- USB Power Input (5V)
- Li-Ion Battery (3.7V, 2000mAh)
- Power Management:
- Battery Charger IC (MCP73831 – Charges battery from solar or USB)
- Power Selection Circuit (Automatically switches between power sources)
- Voltage Regulation:
- Boost Converter (MT3608 – Steps battery voltage up to 5V)
- Buck Converters:
- 3.3V Regulator (AP7333-33)
- 1.8V Regulator (AP7333-18)
- Protection Components:
- Schottky Diodes (Prevent reverse current)
- Capacitors (For power stability)
- Indicators & Outputs:
- LED Indicators (Charging & Power status)
- Regulated Outputs: 5V, 3.3V, 1.8V
Can you generate a block diagram showing how these components connect?
224 days
0:30
General (prev)
Project
Below is a Mermaid code block representing a high-level block diagram for your power system:
Image
This diagram shows:
- Inputs: Solar Panel, USB, and LiIon Battery.
- Power Management: Schottky diodes provide reverse current protection; battery charging via the MCP73831; and automatic selection via the power select circuit.
- Voltage Regulation: The battery is boosted to a regulated 5V by the MT3608, which then feeds two buck converters that generate 3.3V and 1.8V.
- Indicators: LED indicators display charging and power status.
You can use this block diagram as a reference to develop your detailed schematic within your Flux project.
224 days
0:31
General (prev)
Chat History
Project
Below is an updated Mermaid code block showing a high-level block diagram with the battery removed and a 12V transformer added:
Image
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.
224 days
Ready.
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- Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portaljharwinbarrozo43.0M
- Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #powerjharwinbarrozo11.4M
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