Design 72V-12V Automotive DC-DC
Budget: ₹1,500 – ₹12,500 INR
I’m developing an EV scooter, e-rickshaw and loader platform that runs from a 38 V – 72 V traction battery. I need an isolated DC-DC converter that delivers a clean, regulated 12 V rail at 20 A with better than 90 % efficiency and rock-solid performance under rapid load swings. The unit must meet automotive-grade expectations: wide input transients, OVP, OCP, thermal shutdown, robust EMI filtering and stable regulation through vibration and temperature extremes.
The PCB has to stay compact so it can slide straight into a metal enclosure that doubles as a heatsink, therefore component placement and thermal paths are critical. If your past work includes high-power or automotive DC-DC supplies, please share a concise example and outline the control topology and magnetics approach you would apply here.
Deliverables (native design files, ready for manufacture)
• Complete schematic capture
• Optimised PCB layout + Gerber/Drill set
• Annotated BOM with manufacturer part numbers and suggested alternates
• Thermal analysis or calculations showing junction temperatures at 20 A continuous load
• Brief design note covering control loop stability, EMI strategy, and validation tests
Acceptance will be based on simulated and calculated efficiency ≥90 %, output of 12 V ± 5 % from 2 A to 20 A, and compliance with basic automotive load-dump and surge requirements. Altium, KiCad, LTspice or similar mainstream toolchains are welcome—as long as I can open and review the source files.
I’m ready to review proposals and move quickly to the first schematic spin.
The PCB has to stay compact so it can slide straight into a metal enclosure that doubles as a heatsink, therefore component placement and thermal paths are critical. If your past work includes high-power or automotive DC-DC supplies, please share a concise example and outline the control topology and magnetics approach you would apply here.
Deliverables (native design files, ready for manufacture)
• Complete schematic capture
• Optimised PCB layout + Gerber/Drill set
• Annotated BOM with manufacturer part numbers and suggested alternates
• Thermal analysis or calculations showing junction temperatures at 20 A continuous load
• Brief design note covering control loop stability, EMI strategy, and validation tests
Acceptance will be based on simulated and calculated efficiency ≥90 %, output of 12 V ± 5 % from 2 A to 20 A, and compliance with basic automotive load-dump and surge requirements. Altium, KiCad, LTspice or similar mainstream toolchains are welcome—as long as I can open and review the source files.
I’m ready to review proposals and move quickly to the first schematic spin.