I’ll perform the risk review and propose schematic/BOM corrections only. I’ll document the risks and recommended changes first, then wait for your approval before changing the schematic or BOM.

I completed the pre-layout risk review and documented the proposed corrections here: Engineering Risk Review Before PCB Layout.

Main finding: the current Q1 reverse-polarity stage is unsafe because VGS can reach about 32 V, and SMCJ33A can clamp above the LM2596 40 V max input. I recommend replacing the front end with TPS26630RGER or LM74700QDDFRQ1 + MOSFET, and replacing LM2596 stages with 60 V bucks or industrial DC/DC modules.

No schematic/BOM changes were made yet, and PCB layout was not started. Approve Package A in the review file if you want me to apply the robust industrial corrections.

I’ll apply Package A at schematic/BOM level only: replace the unsafe low-side Q1 stage with a robust high-side protection/eFuse front end, update the transient strategy, and swap/annotate the regulator solution toward 60 V-capable industrial parts. I’ll verify datasheet requirements and rerun ERC; no PCB layout work will be started.

Applied Package A schematic/BOM corrections only; PCB layout was not started.

Updated the front end to TPS26630RGER + external blocking MOSFET, upgraded the input common-mode choke to Wurth 7448063801, documented LM2596 60 V-capable alternatives, and updated Engineering Risk Review Before PCB Layout. ERC review reports no errors or warnings.