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C_BULK1 100u 25V->35V — must survive SMBJ18A clamp (<=29.2V at rated surge)

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25V electrolytic sat directly on VIN_PROT where the TVS clamps up to 29.2V;
35V-rated part in the same 8x10 can. Regen diff = 1 line. ERC 133->133;
analyzer diff unchanged.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
noise
2026-07-04 09:31:55 -04:00
parent f7eb69929e
commit dbfe4b22f7
2 changed files with 2 additions and 2 deletions
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2
tools/build_power.py
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@@ -201,7 +201,7 @@ place("Transistor_FET:Q_NMOS_GDS", "Q_REV", "CSD18540 (Vds>=30V)", "Package_TO_S
140, 90, {'1': 'GATE_REV', '2': 'VIN_PROT', '3': '+15V_IN'})
place("Device:C", "C_VCAP", "1u", "Capacitor_SMD:C_0402_1005Metric", 120, 100, {'1': 'VCAP_REV', '2': GND})
tvs = place("Device:D_TVS", "TVS_IN", "SMBJ18A", "Diode_SMD:D_SMB", 160, 80, {'1': 'VIN_PROT', '2': GND})
place("Device:C_Polarized", "C_BULK1", "100u/25V", "Capacitor_SMD:CP_Elec_8x10", 170, 80, {'1': 'VIN_PROT', '2': GND})
place("Device:C_Polarized", "C_BULK1", "100u/35V", "Capacitor_SMD:CP_Elec_8x10", 170, 80, {'1': 'VIN_PROT', '2': GND}) # 35V: must survive SMBJ18A clamp (<=29.2V surge)
place("Device:C", "C_BULK2", "10u/50V", "Capacitor_SMD:C_1210_3225Metric", 180, 80, {'1': 'VIN_PROT', '2': GND})
# PWR_FLAGs co-located exactly on real pins so they bind: +15V_IN @ D_REV.6 (ANODE),
# VIN_PROT @ TVS.1 (a power_in driver for VIN_PROT, needed once bucks consume it).