A DC voltage in input (~24V-18V) is decreased to 12V and 5V using modules (DC-DC step down regulators). And then these 5V and 12V voltages are distributed to different devices. One module DC=DC step down regulator is for the raspberry pi4B alone. In theory the pi4B needs 3A, and the module is supposed to deliver 2-3Amax. I will try to add a heatsink on the LM2596 chip.
| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 20mm_PCB_Fuse_Holder | F1,F2,F3,F4,F5,F6,F7 | 20X5MM_FUSE_HOLDER_22MM_CENTRES | 7 |
| 2 | HSMG-C150 | LED1 | LED1206-R-RD | 1 |
| 3 | PHOENIX | J1,J2,J3,J4,J5,J6,J7 | PHOENIX PKG | 7 |
| 4 | DC-DC-STEP-DOWN-LM2596 | 1,2,3 | DC-DC-STEP-DOWN-LM2596 | 3 |
| 5 | 2.2K | R1 | R1206 | 1 |
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