Board Status Circuit
The OBC Module has a function to monitor the OBC board status (power and temperature).
Power Status Monitoring
A Current and Voltage Monitor is integrated into the power supply nodes provided by the OBC Module. The Current and Voltage Monitor IC uses a TEXAS INSTRUMENTS INA3221-Q1 to communicate with both the TRCH and FPGA through an I2C interface, providing power data readings.
The monitoring nodes for the Current and Voltage Monitor are specified as follows.
| Current/Voltage Monitor No. | Target Address | Channel | Node |
|---|---|---|---|
1 |
0x40 |
1 |
VDD_1V0 |
2 |
VDD_1V8 |
||
3 |
VDD_3V3 |
||
2 |
0x41 |
1 |
VDD_3V3_SYS_A |
2 |
VDD_3V3_SYS_B |
||
3 |
VDD_3V3_IO |
For details on accessing the Current and Voltage Monitor, please consult the INA3221-Q1 datasheet.
Temperature Monitoring
The OBC Module includes three temperature sensors to monitor temperature. The temperature sensor IC uses a TEXAS INSTRUMENTS TMQ175-Q1, which communicates with both the TRCH and FPGA via an I2C interface.
The mounting position and target address for the temperature sensors are as follows.
| IC No. | Target Address |
|---|---|
IC16 |
0x4C |
IC17 |
0x4D |
IC20 |
0x4E |