PCB Design for Fog Generator

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Stopped by execution credits before I could finish the full schematic update or run ERC.
Completed so far:
  • Removed obsolete 14 V parallel ideal-diode mux parts: U10/U11, Q10/Q11, C1/C2, R1–R4.
  • Removed old TPS563200 17 V buck section: U3, L1, C5–C9, R5–R7.
  • Removed old pump MOSFET driver and 2-pin pump connector: Q2, R16, R17, D2, J4.
  • Renamed global power nets:
    • +14V_BUS → +28V_BUS
    • +14V_MUX → +28V_OR_PRE_FUSE
    • VBAT_A_IN → VBAT_SERIES_IN
    • PUMP_PWM → STEPPER_STEP
  • Added main new 28 V architecture parts:
    • U_BB LM5175PWPT buck-boost controller
    • U3 TPS54561DPRT wide-VIN 3.3 V buck regulator
    • J12 logical 6-pin LEMO input connector
    • J4 5-pin JST-XH stepper pump connector
    • U_DIODE_1/U_DIODE_2 LM74700-Q1 ideal-diode OR controllers
    • Q_DIODE_1/Q_DIODE_2/Q_BB1–Q_BB4 using TSM170N06CP_ROG 60 V / 38 A MOSFETs as library substitutes because FDP18N40 was not found
    • L_BB 47 µH / 15 A generic inductor placeholder
  • Added and partially wired:
    • LEMO input filter caps
    • LM5175 bootstrap, soft-start, compensation, RT, UVLO, and feedback passives
    • LM74700 1 µF VCAP bypass caps and gate networks
    • TPS54561 input/output caps, bootstrap cap, feedback divider, EN/UVLO, SS, RT, and compensation placeholders
    • Stepper connector pins for +28V_BUS, GND, STEPPER_STEP, STEPPER_DIR, STEPPER_ENABLE
  • Updated existing metadata:
    • C3 to 4700 µF / 50 V bulk
    • C4 to 50 V HF bypass
    • F1 marked 25 A / 50 V minimum requirement
    • J3 heater label/role updated for 28 V 200 W
    • Q1 metadata updated to the 60 V MOSFET substitute
Important unresolved items:
  • ERC has not been run after these edits.
  • LM5175 datasheet correction: LM5175 VIN max is 42 V, not 60 V. It may still work for a 28 V system, but it is not a 60 V input controller.
  • The exact LEMO EGG.1B.306 library footprint was not found; J12 is currently a logical 6-pin connector placeholder.
  • The LM5175 current-sense implementation is only placeholder-wired; the proper high-power current-sense resistor/network still needs detailed design.
  • INA226 monitor wiring is not fully resolved after the architecture change; U6B/R21 are still in an intermediate/orphaned state and need reconnection to the intended +28 V measurement point.
  • PCB layout is now invalid for this revised architecture and will need a fresh placement/routing pass after the schematic is cleaned.
Clean unresolved issues
Run ERC/DRC
Find 60V controller
Find LEMO footprint
Design current sense
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Files

Schematic

Layout

3D View

Phantom Fogger Control Unit-V3 2e5b

Phantom Fogger Control Unit-V3 2e5b thumbnail