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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
carrier/Power.kicad_sch
View File

@@ -2002,7 +2002,7 @@
(exclude_from_sim no) (in_bom yes) (on_board yes) (dnp no)
(uuid "307c2b9f-38c6-58a7-8692-3a828d80213e")
(property "Reference" "C_BULK1" (at 172.72 79.01 0) (effects (font (size 1.27 1.27)) (justify left)))
(property "Value" "100u/25V" (at 172.72 81.01 0) (effects (font (size 1.27 1.27)) (justify left)))
(property "Value" "100u/35V" (at 172.72 81.01 0) (effects (font (size 1.27 1.27)) (justify left)))
(property "Footprint" "Capacitor_SMD:CP_Elec_8x10" (at 170.18 80.01 0) (effects (font (size 1.27 1.27)) (hide yes)))
(property "Datasheet" "" (at 170.18 80.01 0) (effects (font (size 1.27 1.27)) (hide yes)))
(property "Description" "" (at 170.18 80.01 0) (effects (font (size 1.27 1.27)) (hide yes)))

2
tools/build_power.py
View File

@@ -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).