Solar Slave Part Selections
- Pei Liang Guo
- Titus Chow
Owned by Pei Liang Guo
Analog to Digital Converter
Requirements
- Two input channels
- At least 10-bit measurement resolution
- I2C data interface
- Ideally at least 7 channels
Potential Selections
| Product Name | Price | Number of Selectable Addresses | Measurement Resolution | Supply Voltage | DigiKey |
|---|---|---|---|---|---|
| MCP3426-28 | $4.24 | 8 | 16-Bit | 3.3v / 5v | Link |
| LTC2301/05 | $6.43 | 9 | 12-Bit | 5v | Link |
Isolator
Requirements
- Isolate at least 300 volts (Given solar panels output 151.2 volts and a safety factor of 2)
Potential Selections
| Product Name | Price | Maximum I2C Clock Rate | Safety Specification | DigiKey |
|---|---|---|---|---|
| SI8602AC-B-IS | $4.27 | 1.7 MHz | Up to 5000 VRMS for 1 minute | Link |
I2C Bus Buffer
Requirements
- Isolate the transmission wire capacitance
- Two channels (bidirectional for SDA and unidirectional for SCL)
Potential Selections
| Product Name | Price | Maximum I2C Clock Rate | DigiKey |
|---|---|---|---|
| P82B96TD | $4.16 | 400kHz | Link |
DC-DC Converter
Requirements
- Step down to 5v