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Enables the ability to switch endpoints on/off, provides redundant power from AUX/DCDC to all loads, and protects the LV bus from endpoint short circuits by disconnected damaged endpoints.
Outputs:
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Pin Out
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Item
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MCU IO
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Pin Mappings
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Load Switches
Diagnostic mode is always pulled high for current sensing. Toggling the sense select pin high reads output 1, and low reads output 0.
Expander 1
Address: 0x21
Load | Output | Enable | Sense Select | Mux |
|---|---|---|---|---|
Pedal | 1 | I0.2 | I0.3 | 6 |
Steering | 0 | I0.4 | ||
Solar 1 | 1 | I0.5 | I0.6 | 7 |
Solar 2 | 0 | I0.7 | ||
Left Turn | 1 | I1.0 | I0.1 | 8 |
Right Turn | 0 | I0.0 | ||
DRL | 1 | I1.4 | I1.5 | 9 |
Brake Light | 0 | I1.6 | ||
Console | 1 | I1.1 | I1.2 | 10 |
BMS | 0 | I1.3 |
Expander 0
Address: 0x20
Load | Output | Enable | Sense Select | Mux |
|---|---|---|---|---|
MCI | 1 | I1.4 | I1.5 | 15 |
BPS Light | 0 | I1.6 | ||
Relay | 1 | I1.0 | I0.1 | 11 |
Driver Fan | 0 | I0.2 | ||
Camera | 1 | I0.6 | I0.7 | 13 |
5V DCDC Spare | 0 | I1.0 | ||
Telemetry | 1 | I0.3 | 10.4 | 12 |
5V AUX Spare | 0 | I0.5 | ||
12V DCDC Spare 1 | 1 | I1.3 | I1.2 | 14 |
12V DCDC Spare 2 | 0 | I1.1 |
Power Input
Transient Suppression
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