2-Layer Automotive PCB Design: Multi-Port USB Charger & Data Bypass Module (JLCPCB/LCSC Optimized)
Budget: €250 – €750 EUR
Hello,
I need a schematic and 2-layer PCB layout for an automotive-grade Multi-Port USB Charger box. It's a hardware-only project (no firmware/software).
Key Goals:
Target Manufacturing Cost: Under €15 per unit (PCBA) for a 100-unit run.
Component Selection: Must use low-cost, highly integrated standard ICs (e.g., Injoinic, Southchip) from LCSC/JLCPCB.
PCB Size: Approx. 65 x 40 mm or smaller (Open-Frame).
Mounting: M3 screw holes in the corners with a strict 6mm diameter keep-out zone.
Interfaces & Topology
Input: 12V/24V DC + 1x SMD USB port (Data-Input from car radio).
Outputs ($90^\circ$ Shrouded JST PH 2.0 connectors):
Port 1 & 2 (USB-A): Shared Buck-Regler (QC3.0 / Apple 2.4A, max. 24W total).
Port 3 (USB-C): Shared USB-PD 3.0 / QC3.0 combo controller.
Port 4 (USB-C Combo): Shares power with Port 3 (max. 30W-40W total) + passive $D+/D-$ data bypass from the Radio-Input for Android Auto/CarPlay.
Safety & Protection (Mandatory)
Input: On-board Car-Mini-Fuse (7.5A/10A) + TVS Load-Dump protection (ISO 7637-2).
EMC: LC filter according to CISPR 25 (No radio interference).
Output: Individual PTC/Polyfuse + ESD protection (15 kV) on all JST ports.
Deliverables:
Complete Schematics & PCB Layout (2-Layer, FR4, 1.6mm, $\ge35\mu m$ copper).
Production files: Gerbers, CPL (Pick&Place), BOM (LCSC part numbers), and a 3D STEP file.
Please share your previous automotive/power delivery PCB designs. Looking forward to your bids!
I need a schematic and 2-layer PCB layout for an automotive-grade Multi-Port USB Charger box. It's a hardware-only project (no firmware/software).
Key Goals:
Target Manufacturing Cost: Under €15 per unit (PCBA) for a 100-unit run.
Component Selection: Must use low-cost, highly integrated standard ICs (e.g., Injoinic, Southchip) from LCSC/JLCPCB.
PCB Size: Approx. 65 x 40 mm or smaller (Open-Frame).
Mounting: M3 screw holes in the corners with a strict 6mm diameter keep-out zone.
Interfaces & Topology
Input: 12V/24V DC + 1x SMD USB port (Data-Input from car radio).
Outputs ($90^\circ$ Shrouded JST PH 2.0 connectors):
Port 1 & 2 (USB-A): Shared Buck-Regler (QC3.0 / Apple 2.4A, max. 24W total).
Port 3 (USB-C): Shared USB-PD 3.0 / QC3.0 combo controller.
Port 4 (USB-C Combo): Shares power with Port 3 (max. 30W-40W total) + passive $D+/D-$ data bypass from the Radio-Input for Android Auto/CarPlay.
Safety & Protection (Mandatory)
Input: On-board Car-Mini-Fuse (7.5A/10A) + TVS Load-Dump protection (ISO 7637-2).
EMC: LC filter according to CISPR 25 (No radio interference).
Output: Individual PTC/Polyfuse + ESD protection (15 kV) on all JST ports.
Deliverables:
Complete Schematics & PCB Layout (2-Layer, FR4, 1.6mm, $\ge35\mu m$ copper).
Production files: Gerbers, CPL (Pick&Place), BOM (LCSC part numbers), and a 3D STEP file.
Please share your previous automotive/power delivery PCB designs. Looking forward to your bids!